Juhui SHL-150 User manual

SHANGHAI JUHUI INSTRUMENT MANUFACTURING CO.,LTD
Leeb hardness tester
Operation manual

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Catalogue
1 Overview............................................................................................................................................. 3
1.1 Product features................................................................................................................. 3
1.2 Main purpose and scope of application.................................................................................. 4
1.3 Specifications......................................................................................................................6
1.4 Working condition.............................................................................................................11
2. Structure characteristics and working principle...................................................................................... 11
2.1 Structure features.................................................................................................................... 11
2.2 Working principle.....................................................................................................................13
3 Technical characteristics.......................................................................................................................14
3.1 Technical parameters................................................................................................................ 14
3.2 Size Weight............................................................................................................................. 15
4 Using.................................................................................................................................................15
4.1 Prepare and check before use.................................................................................................... 15
4.2 Measurement..........................................................................................................................16
5 Special tips.........................................................................................................................................19
6 Detailed operation.............................................................................................................................. 19
6.1Start........................................................................................................................................19
6.2 Shutdown............................................................................................................................... 20
6.3 Measurement..........................................................................................................................20
6.4 Menu structure........................................................................................................................22
6.5 Measurement condition............................................................................................................23
6.6 Print Function..........................................................................................................................26
6.7. Storage Manager.....................................................................................................................28
6.8 Browse interface...................................................................................................................... 30
6.9 System Settings........................................................................................................................31
6.10 Software Information..............................................................................................................32
6.11 Software calibration................................................................................................................33
6.12 Backlight............................................................................................................................... 33
6.13 Auto power-off...................................................................................................................... 34
6.14 Battery replacement............................................................................................................... 34
7 Fault analysis and elimination...............................................................................................................34
8. Maintenance..................................................................................................................................... 34
8.1 Impact device.......................................................................................................................... 34
8.2 Normal maintenance program................................................................................................... 35
8.3 Non warranty device.................................................................................................................35
9 Verification cycle.................................................................................................................................35
10 User instructions...............................................................................................................................35
11 Storage condition, transportation and notice........................................................................................ 36

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1 Overview
1.1 Product features
Based on the principle of measuring the Leeb hardness, it can be measured in a variety of metal
materials.
Support for "forged steel (Steel)" material, when using the D/DC type impact device to test the
"forged steel" specimen, it can be directly read HB, no manual check list.
Easily switch to the hardness of all formats (HL、HB、HRB、HRC、HRA、HV、HS), parallel conversion
of the measured value of the hardness.
Using the big screen 128 x 64 graphics dot matrix LCD display, information is rich, intuitive.
All Chinese display, menu operation, easy to operate.
With bright backlight display, easy to use in the light gray environment.
RS232 communication interface, it can be convenient and fast data exchange and parameter
setting of PC machine.
A host can be equipped with 7 kinds of different impact device, automatic identification of
impact device type. No need to re calibrate the replacement.
It can store the maximum 600 groups (impact number 32 ~ 1) hardness measurement data. The
data in each group include single measurement, mean value, measurement date, impact
direction, number of times, material, hardness, etc..
It can be set in advance the hardness up, low limit, beyond the range of automatic alarm, easy to
satisfy with the user's needs.
Fully sealed metal shell, compact, portable, high reliability, suitable for harsh operating
environment, anti vibration, shock and electromagnetic interference.
Power supply uses 2 AA (five) ordinary alkaline batteries, can be continuous work for not less
than 100 hours, with automatic dormancy, automatic shutdown and other energy-saving
functions.
LCD has remaining battery indicator icon, prompting the user to change the battery in time.
Software calibration function with display value.
It can be equipped with powerful computer software, which has the functions of data
transmission, storage management, statistical analysis, printing and testing report. It can meet
the higher requirements of quality assurance activities and management.
Design according to the standard: 《Hardness tester technical conditions on the Leeb scale》JB/T
9378-2001

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1.2 Main purpose and scope of application
1.2.1 Main application
Installed mechanical or permanent assembly parts.
Mould cavity.
Heavy work piece.
Invalidation analysis of pressure vessel, steam turbine generator set and its equipment.
Test space is very narrow artifacts.
Bearings and other parts.
Requires a formal original record of the test results.
Material distinction of metal materials.
Rapid test of multiple measurement sites in large scale workpiece.
1.2.2 Scope of application
Scope of application are shown in table 1 and table 2.
Table 1
Material
Hardness
system
Impact device
D/DC
D+15
C
G
E
DL
Steel and
cast
steel
HRC
17.9～68.5
19.3～
67.9
20.0
～
69.5
22.4～
70.7
20.6～
68.2
HRB
59.6～99.6
47.7
～
99.9
37.0～
99.9
HRA
59.1～85.8
61.7～
88.0
HB
127～651
80～
638
80～
683
90～
646
83～
663
81～646
HV
83～976
80～
937
80～
996
84～
1042
80～950
HS
30.1～110.1
33.3～
99.3
31.8
～
102.1
35.8～
102.6
30.6～
96.8
Forged
steel
HB
143～650
CWT、ST
HRC
20.4～67.1
19.8～
68.2
20.7
～
68.2
22.6～
70.2
HV
80～898
80～
935
100～
941
82～
1009
Stainles
s steel
HRB
46.5～101.7
HB
85～655
HV
85～802
GC. IRON
HRC

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Table 2
HB
93～334
92～
326
HV
NC、IRON
HRC
HB
131～387
127～
364
HV
C ． ALUM
Cast
Aluminum
Alloys
HB
19～164
23～
210
32～
168
HRB
23.8～84.6
22.7
～
85.0
23.8
～
85.5
BRASS
Copper
zinc
alloy
(brass)
HB
40～173
HRB
13.5～95.3
BRONZE
Copper
tin alloy
(bronze)
HB
60～290
COPPER
Pure
HB
45～315
No.
Material
Leeb hardness HLD
Intensityσb(MPa)
1
C Mild Carbon Steel
350～522
374～780
2
C High-carbon steel
500～710
737～1670
3
Cr chromium steel
500～730
707～1829
4
CrV chrome tangsten steel
500～750
704～1980
5
CrNi chrome-nickel steel
500～750
763～2007
6
CrMo chrome-molybdenum steel
500～738
721～1875

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1.3 Specifications
No.
Name
Qty
Remark
Standard
configurati
on
1
Host
1 pc
2
D type impact device
1 pc
3
High Leeb hardness block
1 pc
4
Nylon brush A
1 pc
5
Small supporting ring
1 pc
6
RS232 communication cable
1 pc
7
Print cable
1 pc
8
Data processing software
1 set
Optional
configurati
on
9
Nylon brush B
G type Impact device to
use
10
Different impact device
Show in table 3
11
Shaped supporting ring
Show in table 4
12
7
CrNiMo chromium nickel molybdenum
steel
540～738
844～1933
8
CrMnSi steel
500～750
755～1993
9
SSST super-strength steel
630～800
1180～2652
10
SST stainless steel
500～710
703～1676

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Table 3
Shaped impact device
DC（D）/DL
D+15
C
G
E(need to import)
Impact energy
Impact mass
11mJ
5.5g/7.2g
11mJ
7.8g
2.7mJ
3.0g
90mJ
20.0g
11mJ
5.5g
Ball head hardness:
Ball head diameter:
Ball head material:
1600HV
3mm
Tungsten carbide
1600HV
3mm
Tungsten carbide
1600HV
3mm
Tungsten carbide
1600HV
5mm
Tungsten carbide
5000HV
3mm
Diamond
Impact device diameter:
Impact device length:
Impact device weight:
20mm
86(147)/ 75mm
50g
20mm
162mm
80g
20mm
141mm
75g
30mm
254mm
250g
20mm
155mm
80g
Maximum hardness test
940HV
940HV
1000HV
650HB
1200HV
Average roughness of specimen surface Ra
1.6μm
1.6μm
0.4μm
6.3μm
1.6μm
Minimum weight:
Direct measurement
Need stable support
Need to close coupled
>5kg
2～5kg
0.05～2kg
>5kg
2～5kg
0.05～2kg
>1.5kg
0.5～1.5kg
0.02～0.5kg
>15kg
5～15kg
0.5～5kg
>5kg
2～5kg
0.05～2kg
Test piece minimum thickness
Dense coupling
Minimum depth of hardened layer
5mm
≥0.8mm
5mm
≥0.8mm
1mm
≥0.2mm
10mm
≥1.2mm
5mm
≥0.8mm
Ball head indentation size

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Hardness 300HV
Indentation diameter
Indentation depth
0.54mm
24μm
0.54mm
24μm
0.38mm
12μm
1.03mm
53μm
0.54mm
24μm
Hardness 600HV
Indentation diameter
Indentation depth
0.54mm
17μm
0.54mm
17μm
0.32mm
8μm
0.90mm
41μm
0.54mm
17μm
Hardness 800HV
Indentation diameter
Indentation depth
0.35mm
10μm
0.35mm
10μm
0.35mm
7μm
--
--
0.35mm
10μm
Impact device application
DC type measuring
hole or cylindrical
tube;
DL type measuring
slender narrow slot
or hole;
D type for routine
measurement
D+15 type
contact surface is
small, elongated,
suitable for
measuring the
groove or
concave surface
C type of impact
force is small, the
surface damage is
very small, not to
destroy the
hardened layer,
suitable for
measuring small
thin parts and
surface hardening
layer.
G type
measuring large
and rough cast
forging.
E type measure
very high hardness
material.

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Table 4
Serial number
Code name
Model
Shaped support ring diagram
Remarks
1
03-03.7
Z10-15
Test outer cylindrical surface R10～R15
2
03-03.8
Z14.5-30
Test outer cylindrical surface R14.5 ～
R30
3
03-03.9
Z25-50
Test outer cylindrical surface R25～R50
4
03-03.10
HZ11-13
Test inner cylindrical surface R11～R13
5
03-03.11
HZ12.5-17
Test inner cylindrical surface R12.5 ～
R17
6
03-03.12
HZ16.5-30
Test inner cylindrical surface R16.5 ～
R30
7
03-03.13
K10-15
Test outer sphere SR10～SR15
8
03-03.14
K14.5-30
Test outer sphere SR14.5～SR30
9
03-03.15
HK11-13
Test inner sphere SR11～SR13
10
03-03.16
HK12.5-17
Test inner sphere SR12.5～SR17
11
03-03.17
HK16.5-30
Test inner sphere SR16.5～SR30

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12
03-03.18
UN
Test outer cylindrical surface,
Adjustable radius R10～∞

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1.4 Working condition
Working temperature: －10℃～＋55℃;
Storage temperature: －20℃～＋75℃;
The relative humidity is less than 90%;
There is no vibration, no strong magnetic field, no corrosive medium and serious dust in the
surrounding environment.
2. Structure characteristics and working principle
2.1 Structure features
2.1.1 Hardness tester
1. Host 2. Impact device 3. Keys
4. LCD screens

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2.1.2 Host
1. Shell 2. Battery cover 3. Labels
2.1.3 D type impact device
1 2 3 4 5 6 7
1 Release button 2 Load sets 3 Conduit 4 Coil unit 5 Conductor 6 Impact body 7
Support ring

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2.1.4 Shaped impact device
DC DL C D+15 E G
2.2 Working principle
With the provisions of the quality of the impact body under the action of the elastic force, to a
certain speed impact specimen surface, and with a punch from the specimen surface 1mm
rebound velocity and impact velocity ratio of the calculation of the value of hardness.
The calculation formula is as follows:
HL=1000×VB/ VA
Formula: HL - hardness value
VB - impact rebound speed
VA - impact velocity of impact body
Impact device output signal diagram is as follows:

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3 Technical characteristics
3.1 Technical parameters
Measurement range: HLD (170 to 960) HLD
Direction: 360 degree vertical downward, oblique, horizontal, oblique, vertical upward
Hardness standard: HL, HB, HRB, HRC, HRA, HV, HS
Measurement of material: steel and cast steel, alloy tool steel, stainless steel, gray cast iron, ball
graphite cast iron, cast aluminum alloy, an alloy of copper and zinc, brass and copper tin alloy
(bronze), copper, wrought steel
Display: LCD, 128 x 64 graphics dot matrix LCD
Data storage: maximum 600 groups (impact number 32 ~ 1)
Working voltage: 2 * 1.5V common alkaline battery
Working time: about 100 hours (not on the back)
Communication interface: RS232
The value of the error and the value of the display are shown in Table 5.
Table 5
No.
Impact device
type
Standard Leeb hardness
block
Indication error
Indication
repeatability
1
D
760±30HLD
530±40HLD
±6 HLD
±10 HLD
6 HLD
10 HLD
2
DC
760±30HLDC
530±40HLDC
±6 HLDC
±10 HLDC
6 HLD
10 HLD
3
DL
878±30HLDL
736±40HLDL
±12 HLDL
12 HLDL
4
D+15
766±30HLD+15
544±40HLD+15
±12 HLD+15
12 HLD+15
5
G
590±40HLG
500±40HLG
±12 HLG
12 HLG
6
E
725±30HLE
508±40HLE
±12 HLE
12 HLE

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7
C
822±30HLC
590±40HLC
±12 HLC
12 HLC
3.2 Size Weight
3.2.1 Dimension
132×82×33mm (Host).
3.2.2 Weight
About 0.6kg (Host).
4 Using
4.1 Prepare and check before use
4.1.1 Required by the test sample surface
The surface of the specimen shall be in accordance with the relevant requirements of Table 3.
The sample surface temperature can not be too high, should be less than 120℃.
The sample surface roughness can not be too large, otherwise it will cause the measurement
error. The surface of the sample must be exposed to metallic luster, and smooth, smooth, not oil.
The weight of the sample is required to be larger than 5kg, which is not required to support; the
weight of the specimen, the specimen with the 2-5kg test, the test piece and the thin wall
specimen are supported by the object. In the middle of the sample, the sample must be placed
on a flat and solid plane, and the sample must be placed in a stable place, and there is no
shaking.
Surface sample: the test surface of the specimen is preferably plane. When the surface curvature
radius R is less than 30mm (DC, D+15, D, C, E, DL type impact device) and less than 50mm (G type
impact device), should be used in the test of small supporting ring or shaped supporting ring.

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Sample should be sufficient thickness, the minimum thickness of the specimen shall be in
accordance with the provisions of table 3.
For a specimen having a surface hardened layer, the depth of the hardened layer shall be in
accordance with the provisions of table 3.
Coupling
---For light weight sample, we must be closely coupled with the rigid body, and the two coupling
surface must be flat, smooth and coupling agent dosage is not too much, the direction of the test
must be perpendicular to the coupling plane;
---When the specimen is a large area of plate, long rod, bending parts, even though the weight
and the thickness of the specimen may cause the specimen deformation and instability, the test
values are not allowed. Therefore, it should be reinforced or supported on the back of the test
point.
The magnetic sample should be less than 30 Gauss.
4.1.2 Instrument system Settings
Detailed setting method as 6.9.
4.1.3 Instrument measurement conditions set
Detailed setting method as 6.5.
4.2 Measurement
Before the measurement, the instrument can be tested by using the random standard scale. The
error and repeatability of the instrument are not more than Table 5 provisions.
4.2.1 Start
The impact device plug is inserted into the upper end of the instrument in the percussion device
socket.
Press 【 】key, at this time the power is connected, the instrument enters the measuring
Note: random block hardness value is to use calibration of measuring hardness tester, on the
determination of vertical down 5 times, take the arithmetic mean as random hardness block
hardness values.
If the value exceed bid, users can use the calibration function.

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state.
4.2.2 Load-on
Push down the load cover to lock the impact body; for the DC type impact device, you can load
the stick to the test surface, the DC type impact device inserted into the loading rod, until the
stop position, this time to complete the load.
4.2.3 Location
Press the impact device supporting ring on the selected measuring direction on the surface of the
sample, and the impact direction should be perpendicular to the test surface;
4.2.4 Measurement
Press the release button to test the upper part of the impact device. At this point, the specimen,
impact device, operator are stable, and the direction of the force should be through the impact
device axis.
Each measuring part of the sample is generally carried out in five experiments. Data should not
exceed the average value ±15HL.
The distance between any two indentation or any one of the indentation center distance from
the edge of the specimen shall be in accordance with the provisions of table 6.
For specific materials, the hardness value of the measured on the scale is more accurate than the
other hardness values, and the corresponding conversion relationship must be obtained. The
method is: the test of the same test sample with the same scale and the corresponding hardness
tester. For each of the hardness values, in the three or more need to convert the hardness of the
uniform distribution of the measured around 5 points on the measured hardness, using the
average hardness and the corresponding hardness value respectively as a corresponding value, to

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make the hardness contrast curve, the curve should at least include three sets of data.
Table 6
Impact device
type
The distance between
the two indentation
center（mm）
Edge distance from the center
of indentation (mm)
No less than
No less than
D、DC
3
5
DL
3
5
D+15
3
5
G
4
8
E
3
5
C
2
4
4.2.5 Read the measured value
The average value of a number of effective test points is used as a measurement test data.
4.2.6 Print output
Specific setting method is showing 6.3.3 and 6.6.
4.2.7 Press 【 】button shutdown
4.2.8 Test result representation method
The hardness value is shown on the front of the HL, and the type of the impact device is shown in
the HL. For example, 700HLD shows that D type measured Leeb hardness value is 700.
For other hardness of the measured on the scale, the hardness of the symbol should be attached
to the corresponding hardness before the sign of the hardness of the on the scale. For example,
400HVHLD said the Vivtorinox hardness value of the measured by the D type impact device was
400.

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Note: the impact of different device types measured at different HL values, such as 700HLD ≠
700HLC.
5 Special tips
The replacement of the impact device must be in the off state, otherwise it can not automatically
identify the type of impact device, and may cause damage to the instrument circuit board.
Under normal circumstances, the current measurement value cannot be stored in the absence of
a set of 【impact times】. If you want to store, you can press the 【average】key to end the
measurement in advance.
Press 【average】key to end the measurement in advance, 【system settings】menu in the
【automatic storage】,【automatic transmission data】and other functions are not up to the
role.
D type and DC type impact device has a strength measurement function, so the use of other
types of impact device, will not be modified 【hardness / strength】set, if the D/DC type impact
device is set to 【strength】, and replace for other impact device, 【hardness / strength】set will
be automatically modified for 【hardness】.
When set to 【intensity】, it will not be able to set up the system of hardness (the cursor will be
skipped from the 【hardness value】).
Not all materials can be converted into all of the system, change the material after the hardness
of the system will automatically resume as a HL. Therefore, set the measurement conditions to
set up the first 【material】, and then set 【hardness value】.
6 Detailed operation
6.1Start
Press【 】button to start, instrument display:
Multi-functional type hardness tester
The instrument will detect the type of impact device and display, please pay attention to the
observation is correct, and then enter the main display interface.
Impact device:D

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6.2 Shutdown
In any display condition press【 】button all can be turned off.
6.3 Measurement
Automatically enter the main display interface when start, as shown in the following diagram:
6.3.1 Contents note
Battery information: displays the remaining capacity.
Impact direction: current direction.
Average value: when the impact number is reached, the average value is displayed.
Hardness: the hardness of the current measurement system.
Measured value: the current single measurement (no mean value), the current average (with a
mean value).
Indicates that the range of conversion or measurement is more than the conversion or
measurement range. Indicates shows below the conversion or measuring range.
Material: current setting material.
Impact times: the number of times when the impact number is displayed, the number of times
when the impact is displayed, and the corresponding number of times when viewing a single
measurement.
6.3.2 Measuring operation
In the main interface can be measured, each completed a measurement and display the
measured value; impact number counting increases 1; if beyond the tolerance limit, the buzzer of
Hardness mode
Average tip
Impact direction
Battery Info
Impact times
Measured Value
Materials