Stealth SWP 9010 User manual
Part No. 9010H
DIGI-TIG 180 DC PULSE PFC MV
OPERATOR’S
MANUAL
STEALTH DIGI-TIG 180 DC PULSE PFC MV
IMPORTANT
Read this Owner’s Manual completely before attempting to use this equipment.
Save this manual and keep it handy for quick reference. Pay particular attention
to the safety instructions provided for your protection. Contact your distributor if
you do not fully understand this manual.
CONTENTS
1. SAFETY 4
1.1 SIGNAL EXPLANATION 4
1.2 ARC WELDING DAMAGE 4
1.3 ELECTRIC AND MAGNETIC FIELDS 7
2. SUMMARY 8
2.1 BRIEF INTRODUCTION 8
2.2 MODULE EXPLANATION 9
2.3 WORKING PRINCIPLE 9
2.4 VOLT-AMPERE CHARACTERISTIC 9
3. INSTALLATION AND ADJUSTMENT 11
3.1 PARAMETERS 11
3.2 DUTY CYCLE AND OVER HEATING 12
3.3 MOVEMENT AND PLACEMENT 12
3.4 POWER SUPPLY INPUT CONNECTION 12
3.5 POLARITY CONNECTION (MMA) 13
3.6 ASSEMBLING THE EQUIPMENT (TIG) 13
4. OPERATION 14
4.1 MACHINE CONTROLS 14
4.2 CONTROL PANEL 15
4.3 ARGON ARC WELDING OPERATION 18
4.3.1 TIG WELDING (4T OPERATION) 18
4.3.2 TIG WELDING (2T OPERATION) 19
4.4 WELDING PARAMETERS 20
4.4.1 JOINT FORMS IN TIG/MMA 20
4.4.2 EXPLANATION OF WELDING QUALITY 20
4.4.3 PARAMETERS MATCHING 21
4.5 OPERATION ENVIRONMENT 23
4.6 OPERATION NOTICES 23
5. MAINTENANCE AND TROUBLESHOOTING 24
5.1 MAINTENANCE 24
5.2 TROUBLESHOOTING 25
5.3 MAIN ELECTRICAL DIAGRAM 27
STEALTH DIGI-TIG 180 DC PULSE PFC MV
STEALTH DIGI-TIG 180 DC PULSE PFC MV
1. SAFETY
1.1 Icons Explanation
• The above icons mean Warning! Notice! Running and thermal parts or receiving an
electric shock may harm you or others. The following precautions apply as a guide
to working safely.
1.2 Arc Welding Damage
• The following icons explanations are to prevent accidents to you or others during
the welding process.
• Only experienced personell can install, operate, maintain and repair the equipment.
• During the operation make sure those around you are properly protected.
• After turning off the machine power, please maintain and examine the equipment
according to 5due to DC voltage existing in the electrolytic capacitors.
ELECTRIC SHOCK CAN KILL
• Never touch live electrical parts.
• Wear dry, hole-free gloves and clothes to insulate yourself.
• Insulate yourself from work and ground using dry insulation. Make certain the
insulation is large enough to cover your full area of physical contact with work and
ground.
• Take care when using the equipment in a confined space, on uneven surfaces and
in damp conditions.
• Shut down the incoming electrical supply prior to the equipment’s installation.
• Ensure the equipment is installed correctly and the work or metal is earthed
according to the operation manual.
• The electrode and work (or ground) circuits are ‘hot’ when the machine is on. Do not
touch these electrically ‘hot’ parts with your bare skin or wet clothing. Wear dry,
hole-free gloves to insulate hands.
• In semiautomatic or automatic wire welding, the electrode, electrode reel, welding
head, nozzle or semiautomatic welding gun are also electrically ‘hot’.
• Always ensure the work cable makes a good electrical connection and is as close as
possible to the metal being welded.
• Ensure the electrode holder, work clamp, welding cable and welding machine are
in good, safe operating condition. Replace any damaged insulation.
• Never dip the electrode in water for cooling.
• Never simultaneously touch electrically ‘hot’ parts of electrode holders connected to
two machines as voltage between the two can be the total of the open circuit voltage
of both welders.
• When working above floor level, use a safety belt to protect yourself from a fall
should you receive an electric shock.
SAFETY
1
§1 SAFETY
§1.1 Signal Explanation
The above signals mean warning! Notice! Running parts and getting an electric shock or thermal parts
will take damage for your body or others. The corresponding notices are as follows. It is quite a safe
operation after taking several necessary protection measures.
§1.2 Arc Welding Damage
The following signals and word explanations are to some damages for your body or others happening
on the welding operation. While seeing these, please remind of yourself or others to be dangerous.
Only ones who are trained professionally can install, debug, operate, maintain and repair the
equipment.
During the operation, non-concerned people should be lift, especially for children.
After shut off the machine power, please maintain and examine the equipment according to §5
because of the DC voltage existing in the electrolytic capacitors.
ELECTRIC SHOCK CAN KILL.
Never touch electrical parts.
Wear dry, hole-free gloves and clothes to insulate yourself.
Insulate yourself from work and ground using dry insulation. Make certain the insulation is large
enough to cover your full area of physical contact with work and ground.
Take carefully when using the equipment in small place, falling-off and wet circumstance.
Never close the machine power before installation and adjustment.
Ensure to install the equipment correctly and ground the work or metal to be welded to a good
electrical (earth) ground according to the operation manual.
The electrode and work (or ground) circuits are electrically “hot” when the welder is on. Do not touch
these “hot” parts with your bare skin or wet clothing. Wear dry, hole-free gloves to insulate hands.
In semiautomatic or automatic wire welding, the electrode, electrode reel, welding head, nozzle or
SAFETY
1
§1 SAFETY
§1.1 Signal Explanation
The above signals mean warning! Notice! Running parts and getting an electric shock or thermal parts
will take damage for your body or others. The corresponding notices are as follows. It is quite a safe
operation after taking several necessary protection measures.
§1.2 Arc Welding Damage
The following signals and word explanations are to some damages for your body or others happening
on the welding operation. While seeing these, please remind of yourself or others to be dangerous.
Only ones who are trained professionally can install, debug, operate, maintain and repair the
equipment.
During the operation, non-concerned people should be lift, especially for children.
After shut off the machine power, please maintain and examine the equipment according to §5
because of the DC voltage existing in the electrolytic capacitors.
ELECTRIC SHOCK CAN KILL.
Never touch electrical parts.
Wear dry, hole-free gloves and clothes to insulate yourself.
Insulate yourself from work and ground using dry insulation. Make certain the insulation is large
enough to cover your full area of physical contact with work and ground.
Take carefully when using the equipment in small place, falling-off and wet circumstance.
Never close the machine power before installation and adjustment.
Ensure to install the equipment correctly and ground the work or metal to be welded to a good
electrical (earth) ground according to the operation manual.
The electrode and work (or ground) circuits are electrically “hot” when the welder is on. Do not touch
these “hot” parts with your bare skin or wet clothing. Wear dry, hole-free gloves to insulate hands.
In semiautomatic or automatic wire welding, the electrode, electrode reel, welding head, nozzle or
4
STEALTH DIGI-TIG 180 DC PULSE PFC MV
FUMES AND GASES CAN BE DANGEROUS
• Welding may produce fumes and gases hazardous to health. Avoid breathing these
fumes and gases.
• When welding, keep your head out of fumes. Use enough ventilation and/or exhaust
at the arc to keep fumes and gases away from the breathing zone. When welding
with electrodes which require special ventilation such as stainless or hard facing or
lead or cadmium plated steel and other metals or coatings which produce highly
toxic fumes, keep exposure as low as possible and below Threshold Limit Values
using local exhaust or mechanical ventilation. In confined spaces or in some
circumstances, outdoors, a respirator may be required. Additional precautions are
also required when welding on galvanized steel.
• Do not weld in locations near chlorinated hydrocarbon vapours coming from
degreasing, cleaning or spraying operations. The heat and rays of the arc can react
with solvent vapours to form phosgene – a highly toxic gas – and other irritating
products.
• Shielding gases used for arc welding can displace air and cause injury or death.
Always use enough ventilation, especially in confined areas, to ensure breathing air
is safe.
• Read and understand the manufacturer’s instructions for this equipment and the
consumables to be used, including the material safety data sheet and follow your
employer’s safety practices.
ARC RAYS CAN BURN
• Use a shield with the correct filter and cover plates to protect your eyes from sparks
and the rays of the arc when welding or observing open arc welding.
• Use suitable clothing made from durable flame-resistant material to protect your
skin and that of your helpers from the arc rays.
• Protect nearby personnel with suitable, non-flammable screening and/or warn them
to avert their eyes from the arc rays or expose themselves to hot spatter or metal.
SELF-PROTECTION
• Keep all equipment safety guards, covers and devices in position and in good repair.
Keep hands, hair, clothing and tools away from V-belts, gears, fans and all other
moving parts when starting, operating or repairing equipment.
• Do not put your hands near the engine fan. Do not attempt to override the governor
or idler by pushing on the throttle control rods while the engine is running.
DO NOT add fuel near an open flame welding arc or when the
engine is running. Stop the machine and allow it to cool before refuelling to prevent
spilled fuel from vapourising on contact with hot engine parts and igniting. Do not
spill fuel when filling tank. If fuel is spilled, wipe it up and do not start engine until
fumes have been eliminated.
SAFETY
2
semiautomatic welding gun are also electrically “hot”.
Always be sure the work cable makes a good electrical connection with the metal being welded. The
connection should be as close as possible to the area being welded.
Maintain the electrode holder, work clamp, welding cable and welding machine in good, safe
operating condition. Replace damaged insulation.
Never dip the electrode in water for cooling.
Never simultaneously touch electrically “hot” parts of electrode holders connected to two welders
because voltage between the two can be the total of the open circuit voltage of both welders.
When working above floor level, use a safety belt to protect yourself from a fall should you get a
shock.
FUMES AND GASES CAN BE DANGEROUS.
Welding may produce fumes and gases hazardous to health. Avoid breathing these fumes and gases.
When welding, keep your head out of the fume. Use enough ventilation and/or exhaust at the arc to keep
fumes and gases away from the breathing zone. When welding with electrodes which require special
ventilation such as stainless or hard facing or on lead or cadmium plated steel and other metals or
coatings which produce highly toxic fumes, keep exposure as low as possible and below Threshold
Limit Values using local exhaust or mechanical ventilation. In confined spaces or in some
circumstances, outdoors, a respirator may be required. Additional precautions are also required when
welding on galvanized steel.
Do not weld in locations near chlorinated hydrocarbon vapors coming from degreasing, cleaning or
spraying operations. The heat and rays of the arc can react with solvent vapors to form phosgene, a
highly toxic gas, and other irritating products.
Shielding gases used for arc welding can displace air and cause injury or death. Always use enough
ventilation, especially in confined areas, to insure breathing air is safe.
Read and understand the manufacturer’s instructions for this equipment and the consumables to be
used, including the material safety data sheet and follow your employer’s safety practices.
ARC RAYS CAN BURN.
Use a shield with the proper filter and cover plates to protect your eyes from sparks and the rays of the
SAFETY
3
arc when welding or observing open arc welding.
Use suitable clothing made from durable flame-resistant material to protect your skin and that of your
helpers from the arc rays.
Protect other nearby personnel with suitable, non-flammable screening and /or warn them not to
watch the arc nor expose themselves to the arc rays or to hot spatter or metal.
SELF-PROTECTION
Keep all equipment safety guards, covers and devices in position and in good repair. Keep hands, hair,
clothing and tools away from V-belts, gears, fans and all other moving parts when starting, operating or
repairing equipment.
Do not put your hands near the engine fan. Do not attempt to override the governor or idler by
pushing on the throttle control rods while the engine is running.
DO NOT
adds the fuel near an open flame welding arc or when the engine is
running. Stop the engine and allow it to cool before refueling to prevent spilled fuel from vaporizing on
contact with hot engine parts and igniting. Do not spill fuel when filling tank. If fuel is spilled, wipe it
up and do not start engine until fumes have been eliminated.
WELDING SPARKS can cause fire or explosion.
Remove fire hazards from the welding area. If this is not possible, cover them to prevent the welding
sparks from starting a fire. Remember that welding sparks and hot materials from welding can easily go
through small cracks and openings to adjacent areas. Avoid welding near hydraulic lines. Have a fire
extinguisher readily available.
Where compressed gases are to be used at the job site, special precautions should be used to prevent
hazardous situation.
When not welding, make certain no part of the electrode circuit is touching the work or ground.
Accidental contact can cause overheating and create a fire hazard.
Do not heat, cut or weld tanks, drums or containers until the proper steps have been taken to insure
that such procedures will not cause flammable or toxic vapors from substances inside. They can cause
SAFETY
2
semiautomatic welding gun are also electrically “hot”.
Always be sure the work cable makes a good electrical connection with the metal being welded. The
connection should be as close as possible to the area being welded.
Maintain the electrode holder, work clamp, welding cable and welding machine in good, safe
operating condition. Replace damaged insulation.
Never dip the electrode in water for cooling.
Never simultaneously touch electrically “hot” parts of electrode holders connected to two welders
because voltage between the two can be the total of the open circuit voltage of both welders.
When working above floor level, use a safety belt to protect yourself from a fall should you get a
shock.
FUMES AND GASES CAN BE DANGEROUS.
Welding may produce fumes and gases hazardous to health. Avoid breathing these fumes and gases.
When welding, keep your head out of the fume. Use enough ventilation and/or exhaust at the arc to keep
fumes and gases away from the breathing zone. When welding with electrodes which require special
ventilation such as stainless or hard facing or on lead or cadmium plated steel and other metals or
coatings which produce highly toxic fumes, keep exposure as low as possible and below Threshold
Limit Values using local exhaust or mechanical ventilation. In confined spaces or in some
circumstances, outdoors, a respirator may be required. Additional precautions are also required when
welding on galvanized steel.
Do not weld in locations near chlorinated hydrocarbon vapors coming from degreasing, cleaning or
spraying operations. The heat and rays of the arc can react with solvent vapors to form phosgene, a
highly toxic gas, and other irritating products.
Shielding gases used for arc welding can displace air and cause injury or death. Always use enough
ventilation, especially in confined areas, to insure breathing air is safe.
Read and understand the manufacturer’s instructions for this equipment and the consumables to be
used, including the material safety data sheet and follow your employer’s safety practices.
ARC RAYS CAN BURN.
Use a shield with the proper filter and cover plates to protect your eyes from sparks and the rays of the
SAFETY
3
arc when welding or observing open arc welding.
Use suitable clothing made from durable flame-resistant material to protect your skin and that of your
helpers from the arc rays.
Protect other nearby personnel with suitable, non-flammable screening and /or warn them not to
watch the arc nor expose themselves to the arc rays or to hot spatter or metal.
SELF-PROTECTION
Keep all equipment safety guards, covers and devices in position and in good repair. Keep hands, hair,
clothing and tools away from V-belts, gears, fans and all other moving parts when starting, operating or
repairing equipment.
Do not put your hands near the engine fan. Do not attempt to override the governor or idler by
pushing on the throttle control rods while the engine is running.
DO NOT adds the fuel near an open flame welding arc or when the engine is
running. Stop the engine and allow it to cool before refueling to prevent spilled fuel from vaporizing on
contact with hot engine parts and igniting. Do not spill fuel when filling tank. If fuel is spilled, wipe it
up and do not start engine until fumes have been eliminated.
WELDING SPARKS can cause fire or explosion.
Remove fire hazards from the welding area. If this is not possible, cover them to prevent the welding
sparks from starting a fire. Remember that welding sparks and hot materials from welding can easily go
through small cracks and openings to adjacent areas. Avoid welding near hydraulic lines. Have a fire
extinguisher readily available.
Where compressed gases are to be used at the job site, special precautions should be used to prevent
hazardous situation.
When not welding, make certain no part of the electrode circuit is touching the work or ground.
Accidental contact can cause overheating and create a fire hazard.
Do not heat, cut or weld tanks, drums or containers until the proper steps have been taken to insure
that such procedures will not cause flammable or toxic vapors from substances inside. They can cause
5
WELDING SPARKS can cause fire or explosion
• Remove fire hazards from the welding area. If this is not possible, cover them to
prevent the welding sparks from starting a fire. Remember that welding sparks and
hot materials from welding can easily go through small cracks and openings to
adjacent areas. Avoid welding near hydraulic lines. Have a fire extinguisher readily
available.
• Where compressed gases are to be used at the job site, special precautions should
be taken to prevent a hazardous situation.
• When not welding, make certain no part of the electrode circuit is touching the work
or ground. Accidental contact can cause overheating and create a fire hazard.
• Do not heat, cut or weld tanks, drums or containers until the proper steps have been
taken to ensure that any flammable or toxic vapours have been eliminated from
within. They can cause an explosion even though they have been ‘cleaned’.
• Vent hollow castings or containers before heating, cutting or welding. They may
ignite.
• Sparks and spatter are thrown from the welding arc. Wear oil free protective
garments such as leather gloves, heavy shirt, cuff less trousers, high shoes and a
cap over your hair. Wear ear plugs when welding out of position or in a confined
space. Always wear safety glasses with side shields when in a welding area.
• Connect the work cable to the work as close to the welding area as practical. Keep
work cables connected to the building framework or other locations away from the
welding area.
Rotating parts may be dangerous
• Use only compressed gas cylinders containing the correct shielding gas for the
process used and properly operating regulators designed for the gas and pressure
used. All hoses, fittings, etc. should be suitable for the application and maintained
in good condition.
• Always keep cylinders in an upright position securely chained to an undercarriage or
fixed support.
• Cylinders should be located:
– Away from areas where they may be struck or subjected to physical damage.
– A safe distance from arc welding or cutting operations and any other source of
heat, sparks, or flame.
• Never allow the electrode, electrode holder or any other electrically ‘hot’ parts to
touch a cylinder.
• Keep your head and face away from the cylinder valve outlet when opening the
cylinder valve.
• Valve protection caps should always be in place and hand tight except when the
cylinder is in use or connected for use.
SAFETY
4
an explosion even though they have been “cleaned”.
Vent hollow castings or containers before heating, cutting or welding. They may explode.
Sparks and spatter are thrown from the welding arc. Wear oil free protective garments such as leather
gloves, heavy shirt, cuff less trousers, high shoes and a cap over your hair. Wear ear plugs when
welding out of position or in confined places. Always wear safety glasses with side shields when in a
welding area.
Connect the work cable to the work as close to the welding area as practical. Work cables connected
to the building framework or other locations away from the welding area increase the possibility of the
welding current passing through lifting chains, crane cables or other alternate circuits. This can create
fire hazards or overheat lifting chains or cables until they fail.
Rotating parts may be dangerous.
Use only compressed gas cylinders containing the correct shielding gas for the process used and
properly operating regulators designed for the gas and pressure used. All hoses, fittings, etc. should be
suitable for the application and maintained in good condition.
Always keep cylinders in an upright position securely chained to an undercarriage or fixed support.
Cylinders should be located:
-Away from areas where they may be struck or subjected to physical damage.
-A safe distance from arc welding or cutting operations and any other source of heat, sparks, or
flame.
Never allow the electrode, electrode holder or any other electrically “hot” parts to touch a cylinder.
Keep your head and face away from the cylinder valve outlet when opening the cylinder valve.
Valve protection caps should always be in place and hand tight except when the cylinder is in use or
connected for use.
STEALTH DIGI-TIG 180 DC PULSE PFC MV
6
SAFETY
3
arc when welding or observing open arc welding.
Use suitable clothing made from durable flame-resistant material to protect your skin and that of your
helpers from the arc rays.
Protect other nearby personnel with suitable, non-flammable screening and /or warn them not to
watch the arc nor expose themselves to the arc rays or to hot spatter or metal.
SELF-PROTECTION
Keep all equipment safety guards, covers and devices in position and in good repair. Keep hands, hair,
clothing and tools away from V-belts, gears, fans and all other moving parts when starting, operating or
repairing equipment.
Do not put your hands near the engine fan. Do not attempt to override the governor or idler by
pushing on the throttle control rods while the engine is running.
DO NOT adds the fuel near an open flame welding arc or when the engine is
running. Stop the engine and allow it to cool before refueling to prevent spilled fuel from vaporizing on
contact with hot engine parts and igniting. Do not spill fuel when filling tank. If fuel is spilled, wipe it
up and do not start engine until fumes have been eliminated.
WELDING SPARKS can cause fire or explosion.
Remove fire hazards from the welding area. If this is not possible, cover them to prevent the welding
sparks from starting a fire. Remember that welding sparks and hot materials from welding can easily go
through small cracks and openings to adjacent areas. Avoid welding near hydraulic lines. Have a fire
extinguisher readily available.
Where compressed gases are to be used at the job site, special precautions should be used to prevent
hazardous situation.
When not welding, make certain no part of the electrode circuit is touching the work or ground.
Accidental contact can cause overheating and create a fire hazard.
Do not heat, cut or weld tanks, drums or containers until the proper steps have been taken to insure
that such procedures will not cause flammable or toxic vapors from substances inside. They can cause
STEALTH DIGI-TIG 180 DC PULSE PFC MV
1.3 Electric and Magnetic Fields
• Electric current flowing through any conductor causes localised Electric and
Magnetic Fields (EMF). The discussions of the effect of EMF is ongoing globally.
Up to now, there is no material evidence that EMF has any adverse effects on
health.
Minimise exposure to EMF as far as possible by applying the following procedures:
– Route the electrode and work cables together. Secure them with tape when
possible.
– All cables should be stored away from the operator.
– Never coil the power cable around your body.
– Make sure welding machine and power cable are far enough away from the
operator according to the working environment.
– Connect the work cable to the workpiece as close as possible to the area being
welded.
– Personnel fitted with a heart-pacemaker should keep their distance from the
welding area.
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STEALTH DIGI-TIG 180 DC PULSE PFC MV
2 SUMMARY
2.1 Brief Introduction
The TIG DC PULSE PFC MV welding machine features the latest Pulse Width
Modulation (PWM) technology and Insulated Gate Bipolar Transistor (IGBT) power
module, which can change work frequency to medium frequency so as to replace the
traditional large transformer with a medium frequency transformer – making it smaller,
portable light- weight and low consumption.
The front panel parameters can be adjusted continuously and steplessly, such as start
current, crater arc current, welding current, base current, duty ratio, upslope time,
downslope time, pre-gas, post-gas, pulse frequency, hot start, arc force and arc length
etc. When welding, it takes high frequency and high voltage for arc igniting to ensure
the success ratio of igniting arc.
TIG DC PULSE PFC MV Characteristics
• DC Pulsed TIG and MMA, adopt IGBT and advanced PWM technology
• High performance MCU, Digital control, Digital display
• Preset all parameters with hold process
• HF/Lift TIG, current down slope and up slope, gas post-flow, pulse frequency
• Intelligent protection: over-voltage, under-voltage, over-current, over-heat
1. For MMA, polarity connection can be chosen according to different electrodes
(please refer to 3.5).
2. For DC TIG, DCEP is used normally (workpiece connected to positive polarity, while
torch connected to negative polarity). This connection has many characters, such as
stable welding arc, low tungsten pole loss, more welding current, narrow and deep
weld.
3. DC Pulsed TIG has the following characteristics:
– Pulse heating. Metal in Molten pool has short time on high temperature status
and freezes quickly, which can reduce the possibility to produce hot crack of
the materials with thermal sensitivity
– Workpiece gets little heat. Arc energy is focused. Suitable for thin sheet and
super thin sheet welding.
– Exact control heat input and size of molten pool. Depth of penetration is even
and suitable for welding one side and forming two sides and all position pipe
welding.
– High frequency arc can make metal for microlite fabric, eliminate blowhole and
improve the mechanical performance of the joint. It is also suitable for high
welding speed for improved productivity.
TIG DC PULSE PFC MV-series welding machine is suitable for all position welding for
a variety of plates of stainless steel, carbon steel, alloyed steel, titanium, magnesium,
cuprum, etc, also applied to pipe installation, mould repair, petrochemical,
architectural decoration, car repair, bicycle, handicraft and DIY.
MMA Manual Metal Arc welding
PWM Pulse-Width Modulation
IGBT Insulated Gate Bipolar Transistor
TIG Tungsten Insert Gas welding
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STEALTH DIGI-TIG 180 DC PULSE PFC MV
2.2 Module Explanation
The module explanation of arc welding machine must accord with the National
Standard GB10249, explained as follows (using the TIG 180 DC PULSE PFC MV as an
example).
TIG 180 DC PULSE PFC MV
2.3 Working Principle
The working principle of TIG DC PULSE PFC MV-series welding machines is shown
as follows: Single phases work frequency AC 110/220V(50 Hz) is transformed into
DC(155/312V), then is converted to medium frequency AC (about 50/40KHZ) by
inverter device (IGBT). After reducing voltage by medium transformer (the main
transformer) and rectifying by medium frequency rectifier (fast recovery diode), output
is produced by inductance filtering. The circuit adopts current feedback control
technology to ensure current output stability. Meanwhile, the welding current
parameter can be adjusted continuously and steplessly to meet with the requirements
of welding craft.
SUMMARY
7
sides and all position welding for pipe. 4) High frequency arc can make metal for microlite fabric,
eliminate blowhole and improve the mechanical performance of the joint. 5) High frequency arc is
suitable for high welding speed to improve the productivity.
TIG DC PULSE PFC MV-series welding machine is suitable for all positions welding for various
plates made of stainless steel, carbon steel, alloyed steel, titanium, magnesium, cuprum, etc, which is
also applied to pipe installment, mould mend, petrochemical, architecture decoration, car repair, bicycle,
handicraft and common manufacture.
MMA——Manual Metal Arc welding
PWM——Pulse-Width Modulation
IGBT——Insulation Gate Bipolar Transistor
TIG——Tungsten Insert Gas welding
§2.2 Module Explanation
The module explanation of arc welding machine must accord with the correlative prescripts of
National Standard GB10249. It is explained as the following (take TIG 180 DC PULSE PFC MV as an
example).
TIG 180 DC PULSE PFC MV
Multi voltage
Power factor correction
PULSE
DC welding machine
Max welding current 180A
TIG welding machine/MMA
§2.3 Working Principle
The working principle of TIG DC PULSE PFC MV-series welding machines is shown as the
following figure. Single phases work frequency AC 110/220V(50 Hz) is rectified into DC(155/312V),
then is converted to medium frequency AC (about 50/40KHZ) by inverter device (IGBT), after reducing
voltage by medium transformer (the main transformer) and rectifying by medium frequency rectifier
(fast recovery diode), and is outputted by inductance filtering. The circuit adopts current feedback
Multi voltage
Power factor correction
PULSE
DC welding machine
Max welding current 180A
TIG welding machine/MMA
SUMMARY
8
control technology to insure current output stably. Meanwhile, the welding current parameter can be
adjusted continuously and steplessly to meet with the requirements of welding craft.
§2.4 Volt-Ampere Characteristic
TIG DC PULSE PFC MV welding machine has an excellent volt-ampere characteristic, whose
graph is shown as the following figure. The relation between the conventional rated loading voltage U2
and the conventional welding current I2is as follows:
When I2≤600A，U2=10+0.04I2(V); When I2＞600A,U2=34(V).
67
34
10
0600 I
2
（A）
U
2
（V）
Working
point
Volt-ampere characteristic The relation between the
conventional loading
voltage and welding current
2.4 Volt-Ampere Characteristic
The TIG DC PULSE PFC MV welding machine has an excellent volt-ampere
characteristic, as shown as the following graph (see next page). The relation between
the conventional rated loading voltage U2and the conventional welding current I2is
as follows:
When I2≤600A, U2=10+0.04I2(V); When I2>600A,U2=34(V).
9
STEALTH DIGI-TIG 180 DC PULSE PFC MV
SUMMARY
8
control technology to insure current output stably. Meanwhile, the welding current parameter can be
adjusted continuously and steplessly to meet with the requirements of welding craft.
§2.4 Volt-Ampere Characteristic
TIG DC PULSE PFC MV welding machine has an excellent volt-ampere characteristic, whose
graph is shown as the following figure. The relation between the conventional rated loading voltage U2
and the conventional welding current I2is as follows:
When I2≤600A，U2=10+0.04I2(V); When I2＞600A,U2=34(V).
67
34
10
0600 I
2
（A）
U
2
（V）
Working
point
Volt-ampere characteristic The relation between the
conventional loading
voltage and welding current
10
DIGI-TIG 180 DC PULSE PFC MV
TIG
STEALTH DIGI-TIG 180 DC PULSE PFC MV
11
3 INSTALLATION AND ADJUSTMENT
3.1 Parameters
1~110/120/130
±10%
5-110
Power Supply Voltage (V)
±10%
5-180
50/60
IP23
H
AF
7.5
465 × 146 × 278
66
0-10
0-2/0-10
0.5-200
5-95
≥85
TIG
17.2
1.9
35%
110A
60%
85A
100%
65A
30%
110A
60%
80A
100%
65A
35%
180A
60%
140A
100%
110A
25%
180A
60%
120A
100%
100A
0.99
MMA
33
3.2
17
3.7
MMA
26.5
5.8
1~220/230/240
Frequency (Hz)
Rated Input Current (A)
Rated Input Power (Kw)
Power Factor
Welding Current Adjustment Range (A)
Maximum No Load Voltage (V)
Up-slope/Down-slope (S)
Pre/Post Flow (S)
Pulse Frequency (Hz)
Pulse Width Range (%)
Efficiency (%)
Duty Cycle (40ºC / 10 min)
Protection Class
Insulation Class
Cooling
Net Weight (Kg)
Dimensions (mm) L × W × H
STEALTH DIGI-TIG 180 DC PULSE PFC MV
3.2 Duty Cycle and Over-heating
The letter ‘X’ stands for duty cycle,
which is defined as the proportion
of the time that a machine can work
continuously within a certain time (10
minutes). The rated duty cycle means
the proportion of the time that a
machine can work continuously within
10 minutes when it outputs the rated
welding current.
The relation between the duty cycle ‘X’
and the output welding current ‘I’ is
shown as the figure on the right.
If the welder is over-heating, the IGBT over-heating protection unit inside will send a
message to cut output welding current and illuminate the pilot lamp on the front
panel.
At this point, the machine should be turned off for 15 minutes to cool the fan. When
operating the machine again, the welding output current or the duty cycle should be
reduced.
3.3 Movement and Placement
Please take care when moving it the machine and keep it level.
It also can be moved by the handle on the top. Place the machine securely when in
the right location. When moving using a forklift, ensure the arm lengths are long
enough to reach outside the machine to safely lift.
The movement may result in the potential danger or substantive hazard, so please
make sure that the machine is in a safe position before using it.
3.4 Power Supply Input Connection
TIG DC PULSE PFC MV welding machine’s power supply connects to 110/220V.
When the power supply voltage is over the safe working voltage, there are over-voltage
and under-voltage protection inside the welder. The alarm light will illuminate and, at
the same time, the current output will be cut off.
If the power supply voltage continually goes beyond the safe work voltage range, it will
shorten the machine’s life-span. The below measures can be used:
• Change the power supply input net (connect the welder with the stable power supply
voltage of distributor).
• Switch on the machines using power supply at the same time.
• Set the voltage stabilisation device in the front of power cable input.
INSTALLATION AND ADJUSTMENT
10
§3.2 Duty cycle & Over heat
The letter “X” stands for duty
cycle, which is defined as the proportion
of the time that a machine can work
continuously within a certain time (10
minutes). The rated duty cycle means
the proportion of the time that a
machine can work continuously within
10 minutes when it outputs the rated
welding current.
The relation between the duty cycle “X” and the output welding current “I” is shown as the
right figure.
If the welder is over-heat, the IGBT over-heat protection unit inside it will output an
instruction to cut output welding current, and brighten the over-heat pilot lamp on the front panel.
At this time, the machine should be relaxed for 15 minutes to cool the fan. When operating the
machine again, the welding output current or the duty cycle should be reduced.
§3.3 Movement and placement
Please take care for the welder when moving it, and do not make it sloped.
It also can be moved by the handle on the top of the welder. Place the welder well when
moving it to the right position. When the machine gets to the destination, it needs to be fixed up to
avoid gliding.
When using forklift, its arm length must be long enough to reach the outside so as to ensure
lifting safely.
The movement may result in the potential danger or substantive hazard, so please make sure
that the machine is on the safe position before using it.
§3.4 Power supply input connection
TIG DC PULSE PFC MV welding machines’ power supply connects to 110/220V.
When the power supply voltage is over the safe work voltage, there are over voltage and
12
STEALTH DIGI-TIG 180 DC PULSE PFC MV
3.5 Polarity Connection (MMA)
MMA (DC): Choosing the connection of DCEN or DCEP according to the different
electrodes.
Please refer to the electrode manual.
3.6 Assembling the Equipment (TIG)
• The workpiece is connected to the positive electrode of the welding machine,
and the welding torch is connected to the negative electrode – DC POSITIVE
CONNECTION, otherwise – DC NEGATIVE CONNECTION.
Generally, it is operated in DC POSITIVE CONNECTION in TIG welding mode.
• Control of the torch switch cable consists of 2 wires, pedal control of 3 wires and
the aero socket of 14 leads.
• Consumable parts for TIG torch, such as tungsten electrode / tip / gas nozzle /
electrode shield (short/long) – contact your supplier quoting the part numbers.
• When TIG DC PULSE PFC MV-series welding machines are operated in HF Ignition
mode, the ignition spark can cause interferences in equipment near the welding
machine. Be sure to take appropriate safety precautions or shielding measures.
INSTALLATION AND ADJUSTMENT
11
under voltage protection inside the welder, the alarm light will on, at the same time, the current
output will be cut off.
If the power supply voltage continually goes beyond the safe work voltage range, it will
shorten the welder life-span. The below measures can be used:
Change the power supply input net. Such as, connect the welder with the stable power supply
voltage of distributor;
Induce the machines using power supply in the same time;
Set the voltage stabilization device in the front of power cable input.
§3.5 Polarity Connection（MMA）
MMA (DC): Choosing the connection of DCEN or DCEP according to the different electrodes.
Please refer to the electrode manual..
DC NEGATIVE CONNECTION DC POSITIVE CONNECTION
13
STEALTH DIGI-TIG 180 DC PULSE PFC MV
4 OPERATION
4.1 Machine Controls
MAINTENANCE AND TROUBLESHOOTING
13
§4 Operation
§4.1 Layout for the panel
1Positive output:The welder’s positive polarity output.
2Negative output: The welder’s negative polarity output.
3Aero socket: Is connected to torch switch control wire.（It has 14 leads and lead 8 - lead 9 are
connected to torch switch control wire）.
4Shield gas connector:Is connected to the gas input pipe of torch.
5Power source switch:Switch to “ON”, the welder is turned on, while switch to “OFF”, the
welder is turned off.
6Power source input:To connect power source.
7Shield gas input joint:To connect one head of the gas hose while the other head of which is
connected to argon gas cylinder.
1 Positive output: Welder’s positive polarity output
2 Negative output: Welder’s negative polarity output.
3 Aero socket: Connected to torch switch control wire (has 14 leads with 8-9
connected to torch switch control wire).
4 Shield gas connector: Connected to torch gas input pipe.
5 Power source switch: Switch to ‘ON’ – welder is turned on. Switch to ‘OFF’ –
welder is turned off.
6 Power source input: Connects power source.
7 Shield gas input joint: Connects one head of the gas hose while the other is
connected to argon gas cylinder.
14
4.2 Control Panel
MAINTENANCE AND TROUBLESHOOTING
14
§4.2 Control panel
Overview
The key feature of the control panel is the logical way in which the controls are arranged. All the
main parameters needed for day-to-day working can easily be
-selected with the keys.
-altered with the adjusting dial.
-shown on the display during welding.
The illustration below shows an overview of the main settings needed for day-to-day working,
using the TIG DC PULSE PFC MV control panel as an example. You will find a detailed description
of these settings in the following section.
(1)TIG mode selecting key
2-step mode 4-step mode
(2)Parameter select and adjust
Push the encoder to select the parameter if the parameter indicator lights up, then the selected
parameter can be altered on adjusting dial.
MAINTENANCE AND TROUBLESHOOTING
14
§4.2 Control panel
Overview
The key feature of the control panel is the logical way in which the controls are arranged. All the
main parameters needed for day-to-day working can easily be
-selected with the keys.
-altered with the adjusting dial.
-shown on the display during welding.
The illustration below shows an overview of the main settings needed for day-to-day working,
using the TIG DC PULSE PFC MV control panel as an example. You will find a detailed description
of these settings in the following section.
(1)TIG mode selecting key
2-step mode 4-step mode
(2)Parameter select and adjust
Push the encoder to select the parameter if the parameter indicator lights up, then the selected
parameter can be altered on adjusting dial.
Overview
The key feature of the Control Panel is the logical way in which the controls are
arranged. All the main parameters needed for day-to-day operation can easily be:
– Selected with the keys
– Altered with the adjusting dial
– Shown on the display during welding
The illustration below shows an overview of the main settings needed for day-to-day
working, using the TIG DC PULSE PFC MV control panel as an example. You will find a
detailed description of these settings in the following section.
(1) TIG mode selecting key
(2) Parameter select and adjust
Push the encoder to select, the parameter indicator lights up. The selected
parameter can then be adjusted.
STEALTH DIGI-TIG 180 DC PULSE PFC MV
15
STEALTH DIGI-TIG 180 DC PULSE PFC MV
Available parameters where 2T and 4T mode have been selected:
Tpr Gas pre-flow time
Unit S
Setting range 0-2
Factory setting
Is Starting current (only with 4T)
Unit A
Setting range 5-100%of main current Iw
Factory setting
Tup Upslope time
Unit S
Setting range 0-10
Factory setting
Iw Welding current
Unit A
TIG 180 DC PULSE PFC MV 5-110 (110V) 5-180(220V)
TIG 200 DC PULSE PFC MV 5-130 (110V) 5-220(220V)
Ib Base current
Unit A
TIG 180 DC PULSE PFC MV 5-110 (110V) 5-180(220V)
TIG 200 DC PULSE PFC MV 5-130 (110V) 5-220(220V)
Important! Only selectable when ‘pulse key’ has been pressed
Dcy Ratio of pulse duration to base current duration
Unit %
Setting range 5-95
Factory setting
16
STEALTH DIGI-TIG 180 DC PULSE PFC MV
Important! Only selectable when ‘pulse key’ has been pressed
Fp Pulse frequency
Unit Hz
Setting range 0.5-200
Factory setting
Important! Only selectable when ‘pulse key’ has been pressed
Tdown Downslope time
Unit S
Setting range 0-10
Factory setting
Ic Crater arc current (only with 4T)
Unit S
Setting range 5-100% of main current Iw
Factory setting
Tpo Gas post-flow time
Unit S
Setting range 0-10
Factory setting
(3) Rod electrode (MMA) welding parameter
(4) Power/Alarm indicator
(5) Welding current and other parameter displays
Before starting welding indicate the open-circuit voltage by pushing the
encoder for 3 seconds and the display shows the pre-set value of Tpr, Is, Tup,
Iw, Dcy, Iw, Fp, Ib, Tdown, Ic, Tpo. After the start of welding, display shows
the present actual value of the welding current.
MAINTENANCE AND TROUBLESHOOTING
16
Important! Only selectable when “pulse key” has been pressed.
Fp Pulse frequency
Unit Hz
Setting range 0.5—200
Factory setting
Important! Only selectable when “pulse key” has been pressed.
Tdown Downslope time
Unit S
Setting range 0—10
Factory setting
Ic Crater arc current (only with 4T)
Unit S
Setting range 5—100% of main current Iw ；
Factory setting
Tpo Gas post-flow time
Unit S
Setting range 0—10
Factory setting
(3) Rod electrode(MMA) welding parameter
Parameter Setting range
Arc force 0-10
Hot start 0-10
(4) Power/Alarm indicator
Light up if the welder overheat.
(5) Welding current and other parameter display
Before start of welding Indicate the open-circuit voltage when you push the enconder for 3s and the
display shows the pre-set value of Tpr ,Is ,Tup,Iw,Dcy,Iw,Fp,Ib,Tdown,Ic,Tpo . After the start of
welding, display shows the present actual value of the welding current.
MAINTENANCE AND TROUBLESHOOTING
16
Important! Only selectable when “pulse key” has been pressed.
Fp Pulse frequency
Unit Hz
Setting range 0.5—200
Factory setting
Important! Only selectable when “pulse key” has been pressed.
Tdown Downslope time
Unit S
Setting range 0—10
Factory setting
Ic Crater arc current (only with 4T)
Unit S
Setting range 5—100% of main current Iw ；
Factory setting
Tpo Gas post-flow time
Unit S
Setting range 0—10
Factory setting
(3) Rod electrode(MMA) welding parameter
Parameter Setting range
Arc force 0-10
Hot start 0-10
(4) Power/Alarm indicator
Light up if the welder overheat.
(5) Welding current and other parameter display
Before start of welding Indicate the open-circuit voltage when you push the enconder for 3s and the
display shows the pre-set value of Tpr ,Is ,Tup,Iw,Dcy,Iw,Fp,Ib,Tdown,Ic,Tpo . After the start of
welding, display shows the present actual value of the welding current.
Parameter Setting range
Arc force 0-10
Hot start 0-10
Lights up if the machine overheats
17
STEALTH DIGI-TIG 180 DC PULSE PFC MV
4.3 Argon Arc Welding Operation
4.3.1 TIG welding (4T operation)
The start current and crater current can be pre-set. This function can
compensate the possible crater that appears at the beginning and end of
welding. Thus, 4T is suitable for the welding of medium thickness plates.
Pulsed TIG long welding (4T)
Introduction
• 0Press and hold the gun switch – Electromagnetic gas valve is turned on.
The shielding gas starts to flow
• 0~t1 Pre flow time – adjustment range of pre flow time: 0~2S
• t1 Striking success – adjustment range of start current: 5~100% of main current
• t2 Loosen the gun switch – the output current slopes up from start current.
If the output pulse function is turned on, the output current is pulsed
• t2~t3 Output current slopes up to the setting current value – adjustment range of
up slope time 0~10S
• t3~t4 Welding process – during this period the gun switch is loosened
Note: If the output pulse function is turned on, the output current is pulsed.
If the output pulse function is turned off, the output current is the welding
current (Iw)
• t4 Repress the gun switch – the output current slopes down to crater current.
If the output pulse function is turned on, the slope down current is pulsed
• t4~t5 Down slope time – adjustment range of down slope time: 0~10S
• t5~t6 Crater current holds time – adjustment range of crater current: 5~100% of
main current
• t6 Loosen the gun switch – stop arc and keep the argon flowing
• t6~t7 Post flow time – adjustment range of post flow time: 0~10S
• t7 Electromagnetic valve is closed and stop argon flowing – welding is complete
MAINTENANCE AND TROUBLESHOOTING
18
t4～t5：Down slope time, adjustment rang of down slope time: 0~10S;
t5～t6：Crater current holds time; adjustment range of crater current: 5~100% of main current;
t6：Loosen the gun switch, stop arc, and keep on argon flowing;
t6～t7：Post flow time, adjustment range of post flow time: 0～10S;
t7：Electromagnetic valve is closed and stop argon flowing. Welding is finished.
§4.3.2 TIG welding (2T operation)
Pulsed TIG short welding（2T）：
t（s）
0
I（A）
Loosen the welding
gun switch
Press and hold the welding
gun switch
t1 t5
Striking success Stop arc
t3 t4
Base current setting value
t2
Welding current (peak
current) setting value
5A
Introduction：
0：Press and hold the gun switch, Electromagnetic gas valve is turned on. The
shielding gas starts to flow;
0～t1：Pre flow time, adjustment range of pre flow time : 0~2S;
t1～t2：Striking success, the output current slopes up to the setting current from minimum current
(5A); if the output pulse function is turned on, the slope up current is pulsed;
t2～t3：During the whole welding process, the gun switch is pressed and held without releasing;
Note: If the output pulse function is turned on, the output current is pulsed. If the output pulse
function is turned off, the output current is DC current;
t3：Loosen the gun switch, the output current slopes down; if the output pulse function is turned
on, the slope down current is pulsed;
t3～t4：The output current slopes down to minimum current (5A), stop arc; adjustment range of
down slope time: 0~10S;
t4～t5：Post flow time, adjustment range of post flow time: 0～10S;
18
STEALTH DIGI-TIG 180 DC PULSE PFC MV
4.3.2 TIG welding (2T operation)
Pulsed TIG short welding (2T)
MAINTENANCE AND TROUBLESHOOTING
18
t4～t5：Down slope time, adjustment rang of down slope time: 0~10S;
t5～t6：Crater current holds time; adjustment range of crater current: 5~100% of main current;
t6：Loosen the gun switch, stop arc, and keep on argon flowing;
t6～t7：Post flow time, adjustment range of post flow time: 0～10S;
t7：Electromagnetic valve is closed and stop argon flowing. Welding is finished.
§4.3.2 TIG welding (2T operation)
Pulsed TIG short welding（2T）：
t（s）
0
I（A）
Loosen the welding
gun switch
Press and hold the welding
gun switch
t1 t5
Striking success Stop arc
t3 t4
Base current setting value
t2
Welding current (peak
current) setting value
5A
Introduction：
0：Press and hold the gun switch, Electromagnetic gas valve is turned on. The
shielding gas starts to flow;
0～t1：Pre flow time, adjustment range of pre flow time : 0~2S;
t1～t2：Striking success, the output current slopes up to the setting current from minimum current
(5A); if the output pulse function is turned on, the slope up current is pulsed;
t2～t3：During the whole welding process, the gun switch is pressed and held without releasing;
Note: If the output pulse function is turned on, the output current is pulsed. If the output pulse
function is turned off, the output current is DC current;
t3：Loosen the gun switch, the output current slopes down; if the output pulse function is turned
on, the slope down current is pulsed;
t3～t4：The output current slopes down to minimum current (5A), stop arc; adjustment range of
down slope time: 0~10S;
t4～t5：Post flow time, adjustment range of post flow time: 0～10S;
Introduction
• 0Press and hold the gun switch – electromagnetic gas valve is turned on.
The shielding gas starts to flow
• 0~t1 Pre flow time – adjustment range of pre flow time: 0~2S
• t1~t2 Striking success – the output current slopes up to the setting current from
minimum current (5A). If the output pulse function is turned on, the slope
up current is pulsed
• t2~t3 During the whole welding process, the gun switch is pressed and held
without releasing
Note: If the output pulse function is turned on, the output current is pulsed.
If the output pulse function is turned off, the output current is DC
• t3 Loosen the gun switch – the output current slopes down. If the output pulse
function is turned on, the slope down current is pulsed
• t3~t4 The output current slopes down to minimum current (5A) – stop arc.
Adjustment range of down slope time: 0~10S
• t4~t5 Post flow time – adjustment range of post flow time: 0~10S
• t5 Electromagnetic valve is closed – argon stops flowing and welding is complete
Short circuit protection function
1 TIG /LIFT If the tungesten electrode touches the workpiece when welding, the
current will drop to 5A which can greatly reduce the tungsten spoilage,
prolong the life of the tungsten electrode and prevent tungsten clipping
2 TIG /HF If the tungesten electrode touches the workpiece when welding, the
current will drop to 0 within 1S which can greatly reduce the tungsten
spoilage, prolong the life of the tungsten electrode and prevent tungsten
clipping
19
STEALTH DIGI-TIG 180 DC PULSE PFC MV
3 TMMA operation
If the electrode touches the workpiece over 2S, the welding current will drop auto-
matically to 0 to protect the electrode
Prevent arc-break function
TIG operation – Avoid arc-break. If arc-break occurs the HF will keep the arc stable
Notes
• First check the condition of welding and connection units for any malfunction,
such as ignition spark / gas leakage / out of control etc
• Check whether there is enough Argon gas in the shield gas cylinder. The electro-
magnetic gas valve can be tested via the switch on the front panel
• Do not point the torch at hand or body. When the torch switch is pressed, the arc is
ignited with a high-frequency, high-voltage spark. The ignition spark can cause
interference in equipment.
• The flow rate is set according to the welding power used. Turn the regulation screw
to adjust the gas flow shown on the gas hose pressure meter or the gas bottle
pressure meter.
• The spark ignition is most efficient if you keep a 3mm distance from the workpiece
to the tungsten electrode during the ignition
4.4 Welding Parameters
4.4.1 Joint forms in TIG/MMA
INSTALLATION AND ADJUSTMENT
20
§4.4 Welding Parameters
§4.4.1 Joint forms in TIG/MMA
§4.4.2 The explanation of welding quality
The relation of welding area color & protect effect of stainless steel
Welding area
color
argent , golden
blue
red-grey
grey
black
Protect effect
best
better
good
bad
worst
The relation of welding area color & protect effect of Ti-alloy
Welding area
color
bright argent
orange-yellow
blue-purple
caesious
white powder of
titanium oxid
Protect effect
best
better
good
bad
worst
§4.4.3 TIG Parameters Matching
The corresponding relationship between gas nozzle diameter and electrode diameter
Gas nozzle diameter/mm
Electrode diameter/mm
6.4
0.5
8
1.0
9.5
1.6 or 2.4
11.1
3.2
Notice: the above parameters originate from《Welding Dictionary》P142, Volume 1 of
Edition 2.
a butt joint b lap joint c coner joint d T joint
a) butt joint b) lap joint c) corner joint d) T joint
4.4.2 Explanation of welding quality
INSTALLATION AND ADJUSTMENT
20
§4.4 Welding Parameters
§4.4.1 Joint forms in TIG/MMA
§4.4.2 The explanation of welding quality
The relation of welding area color & protect effect of stainless steel
Welding area
color
argent , golden blue red-grey grey black
Protect effect best better good bad worst
The relation of welding area color & protect effect of Ti-alloy
Welding area
color
bright argent
orange-yellow
blue-purple
caesious
white powder of
titanium oxid
Protect effect
best
better
good
bad
worst
§4.4.3 TIG Parameters Matching
The corresponding relationship between gas nozzle diameter and electrode diameter
Gas nozzle diameter/mm
Electrode diameter/mm
6.4
0.5
8
1.0
9.5
1.6 or 2.4
11.1
3.2
Notice: the above parameters originate from《Welding Dictionary》P142, Volume 1 of
Edition 2.
a butt joint b lap joint c coner joint d T joint
INSTALLATION AND ADJUSTMENT
20
§4.4 Welding Parameters
§4.4.1 Joint forms in TIG/MMA
§4.4.2 The explanation of welding quality
The relation of welding area color & protect effect of stainless steel
Welding area
color
argent , golden
blue
red-grey
grey
black
Protect effect
best
better
good
bad
worst
The relation of welding area color & protect effect of Ti-alloy
Welding area
color bright argent orange-yellow blue-purple
caesious white powder
of
titanium oxid
Protect effect best better good bad worst
§4.4.3 TIG Parameters Matching
The corresponding relationship between gas nozzle diameter and electrode diameter
Gas nozzle diameter/mm
Electrode diameter/mm
6.4
0.5
8
1.0
9.5
1.6 or 2.4
11.1
3.2
Notice: the above parameters originate from《Welding Dictionary》P142, Volume 1 of
Edition 2.
a butt joint b lap joint c coner joint d T joint
20
This manual suits for next models
2
Table of contents
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