iqualitrol iRock-439T User manual


www.iqualitrol.com, [e-mail] 1
ServiceCall:+86‐13711988687
iRock-439T
Automatic Rockwell Hardness Tester
USAGE Instruction Manual


www.iqualitrol.com, [e-mail] 2
ServiceCall:+86‐13711988687
Content
One. Brief Introduction
Two. Main Parameters
Three. External Structure
Four. Working Condition
Five. Unpacking and Installation
Six. Operation Procedure
Seven. Interface Introduction and Usage
Eight. Attached List
Nine. Precautions
Ten. Packing List


www.iqualitrol.com, [e-mail] 3
ServiceCall:+86‐13711988687
One. Brief Introduction
iRock-439T Automatic Rockwell hardness tester with a good aesthetic aspect,
complete functions, easy operation, intuitive display and good reliability, is a high-tech
product combining the mechanic and electric features, which is suitable for the Rockwell
and superficial Rockwell hardness test.
1. Support for all the Rockwell and superficial Rockwell scales;
2. Support for conversion scales of different kinds of hardness;
3. With arc correction function;
4. Touch screen display and operation, dynamically display the working state of the
lifting screw and the indenter;
5. Press operation for the test table, fast rising or dropping;
6. One key to complete the rising of the specimen, loading dwell and unloading of the
indenter, displaying of the hardness value, homing of the test table;
7. With data storage function, automatic calculation of the maximum, minimum,
average of the hardness value, the test results can be printed for output, and with a
RS232 interface users can connect it to the computer for output.
8. Suitable for quenched steel, tempered steel, annealed steel, cold and hard casting,
malleable cast iron, hard alloy steel, aluminum alloy, copper alloy, bearing steel etc.
Also suitable for surface quenched steel, surface heat treating and chemical treating
materials, sheet, zinc layers, chrome layers, tin layers etc.


www.iqualitrol.com, [e-mail] 4
ServiceCall:+86‐13711988687
Two. Main Parameters
Model iRock-439T
Initial Test Force 3kgf (29.42N), 10kgf (98.07N)
Total Test Force 15kgf (147.1N), 30kgf (294.2N), 45kgf (441.3N),
60kgf (588.4N), 100kgf (980.7N), 150kgf (1471N)
Indenter Diamond Rockwell Indenter,Φ1.588mmBall Indenter
Loading Method Automatic (Loading/Dwell/Unloading)
Operation Automatic Rising and Homing,
One Key to Complete
Hardness Reading Touch Screen
Test Scale
HRA, HRD, HRC, HRFW, HRBW, HRGW, HRHW, HREW, HRKW,
HRL, HRM, HRP, HRR, HRS, HRV
HR15N, HR30N, HR45N, HR15TW, HR30TW, HR45TW,
HR15W, HR30W, HR45W, HR15X, HR30X, HR45X, HR15Y,
HR30Y, HR45Y
Conversion Scale
HV, HK, HRA, HRBW, HRC, HRD, HREW, HRFW, HRGW, HRKW,
HR15N, HR30N, HR45N, HR15TW, HR30TW, HR45TW, HS,
HBW
Data Output Built-in Printer，RS232 Interface
Hardness Resolution 0.1HR
Dwell Time 0~99s
Max. Sample Height 310mm
Throat Depth 150mm
Power Supply AC220V，50Hz
Execute Standard ISO 6508，ASTM E18，JIS Z2245，GB/T 230.2
Dimension 535×330×890mm，
Packing Dimension: 820×460×1170mm
Weight Net Weight: 80kg，Gross Weight: 100kg


www.iqualitrol.com, [e-mail] 5
ServiceCall:+86‐13711988687
Three. External Structure
1. Hand wheel 2. Power switch 3. Fuse 4. Power cable
5. Printer 6. Emergency stop
button 7. Lifting screw 8. Test table
9. Indenter 10. Fasten screw 11. Touch screen 12. Upper cover
Four. Working Condition
1. Under the room temperature between 10~30℃.
2. The relative humidity of the room is inferior to 65%.
3. Placed on a stable table, free from vibration and without corrosive agent in
surroundings.
4. Connect the stable voltage power supply with good grounding.
Five. Unpacking and Installation
1. Cut the belts on the packing box.
2. Loosen the screws on the middle bottom iron sheet on both sides of the case.
3. Lift the case up and you can see the machine; take out the accessory box and dust
cover.


www.iqualitrol.com, [e-mail]
6
ServiceCall:+86‐13711988687
4. Unscrew the two M10 bolts under the bottom plate with a spanner.
5. Lift the hardness tester and place it on the prepared stable table (suggested height
450mm).
There should be a hole on the table as following proposal:
6. Remove the straps on the lifting screw and hand wheel.
8. Take out the test table and install it on the lifting screw.
9. Take out the power cable and connect it to the power.
Six. Operation Procedure
1. Turn on the power switch, and the touch screen shows the main interface.
2. Press to select the scale.
3. Choose the corresponding indenter, push the indenter to the main shaft hole, close to
the bearing surface, face the notch plane of the indenter handle to the screw, and
tighten the fasten screw slightly.
4. Press to set the dwell time, arc correction and upper and lower
limit etc.
5. Wipe the test sample clean, place it at the edge of the test table, and then slowly push
it under the indenter.
6. Press to make the test sample close to the indenter, adjust the test position


www.iqualitrol.com, [e-mail] 7
ServiceCall:+86‐13711988687
of the sample and then press to start the test.
7. The machine will automatically apply the loading, dwelling and unloading, and then
show the hardness result.
8. The test table automatically descends and the test is completed.
9. The first result for Rockwell is not valid, adjust the sample position and press the start
key again, the machine will automatically finish the test and show the test result.
Seven. Interface Introduction and Usage
1. Main interface function：

HRC
50.0
5
Scale selection
Hardness result
Dwell time
Scale
Qualification
Start
Delete current
Check all
Date and time


www.iqualitrol.com, [e-mail] 8
ServiceCall:+86‐13711988687
Press the up and down arrows to rise and descend the test table. The double arrows are
quick rise and quick descend.
The test force and displacement window shows the real-time changes of the force sensor
and displacement sensor of the instrument.
The hardness value window displays the latest 6 groups of hardness results. Press the
folder to view all the data, select to print or delete, and it automatically calculates the
maximum, minimum and average values.
Press Set to set the dwell time, arc correction, qualification judge, etc.
Press Help to view the operation procedure, precautions, indication adjustment, etc.
2. Set interface：
Dwell Time is the dwell time setting of the total test force.
F0 Dwell Time of the preliminary test force can be set separately according to the
national standard.
Table Descending Time represents the time of table descent after unloading the test
force, which can basically control the height of table descent.
The hardness value of the cylinder sample can be corrected by Arc Correction.


www.iqualitrol.com, [e-mail]
9
ServiceCall:+86‐13711988687
Limit Setting can be set for qualification judge. The hardness value beyond the range will
be displayed in red font, and will be prompted.
The Factory Set is for factory debugging, and users do not need to set it.
3. Help interface：
Press Help to check the operation tips, operation procedure, instrument parameters,
Rockwell and superficial Rockwell hardness related information.
Press Warning to see the precautions for using the instrument.
Press About to know the executive standard and version number of the instrument.
Press Calibration to do the software calibration of the hardness result.


www.iqualitrol.com, [e-mail] 1
ServiceCall:+86‐13711988687
Eight. Attached List
1. Technical specifications of Rockwell hardness
Test
Force
InitialTestForce(N) 98.07（10kg）Tolerance±2.0%
TotalTestForce(N)
588.4（60kg）
Tolerance±1.0%
980.7（100kg）
1471（150kg）
Indenter
DiamondConeIndenter
Ф1.5875mmBallIndenter
Scale
HRA HRBW HRC HRD HREW
HRFW HRGW HRHW HRR HRM
HRP HRS HRKW HRL HRV
2. Allowed tolerance and repeatability of Rockwell hardness
Scale
HardnessRangeof
StandardHardness
Blocks
AllowedToleranceof
DisplayingValue
AllowedRepeatability
ofDisplayingValuea
A
20~≤75HRA ±2HRA ≤0.02(100－H)
or0.8Rockwellunitb
＞75~≤95HRA ±1.5HRA
B
10~≤45HRB ±4HRB
≤0.04(130－H)
or1.2Rockwellunitb
＞45~≤80HRB ±3HRB
＞80~≤100HRB ±2HRB
C 10~≤70HRC ±1.5HRC ≤0.02(100－H)
or0.8Rockwellunitb
a：Hmeansaveragehardnessvalueb：selectalargervalue
The normally used Rockwell hardness scales are A, B, C 3