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Product Detail
Technical Parameter:
1. The initial test force: 29.42N (3kg); Tolerance: ±2.0%
2. The total test force: 147.1N (15kg), 294.2N (30kg), 441.3N (45kg); Tolerance: ±1.0%
3. The specifications of the indenter:
3.1 Diamond Rockwell indenters
3.2 Ball indenters φ1.5875mm
4. The max height of the specimens: 175mm
5. The distance from the center of the indenter to the instrument body: 165mm
6. The total dimension of the tester: 520×215×700 (mm)
7. The total weight of the tester: 73kg
8. The allowed tolerances of the indicated values of the hardness tester
Scale |
Hardness of Standard Blocks |
Display Tolerance |
15N |
(70~94) HR 15N |
±2 HRN |
30N |
(42~86) HR 30N |
|
45N |
(20~77) HR 45N |
|
15T |
(67~93) HR 15T |
±3 HRT |
30T |
(29~82) HR 30T |
|
45T |
(10~72) HR 45T |
9. The Scales, Indenters, Test Force Values and Application Fields of the Superficial Rockwell Hardness Tests.
Scale |
Indenter Type |
Initial Test Force |
Total Test Force(N) |
Applications |
HR15N |
Diamond Indenter |
29.42 N (3kg) |
147.1(15) |
Hard alloy steel, nitride steel, carburized steel, various heavy steel plate, etc |
HR30N |
294.2(30) |
Surface-quenched steel, carburized steel, knife, thin steel plate, etc |
||
HR45N |
441.3(45) |
Quenched steel, tempered steel, hard cast iron and edge of parts, etc |
||
HR15T |
Ball Indenter φ1.5875mm(1/16 inch) |
147.1(15) |
Annealed copper alloy, brass、bronze plate, mild steel sheet |
|
HR30T |
294.2(30) |
Mild steel sheet, aluminum alloy, copper alloy, brass and bronze, malleable cast iron, |
||
HR45T |
441.3(45) |
Pearlite iron, copper -nickel alloy and zinc-nickel alloy plate |
Accessories (the Packing List)
Besides the main instrument, there are provided the following accessories:
NO. |
Name (specifications) |
Quantity |
1 |
Rockwell Diamond Indenter |
1 |
2 |
Ball Indenterφ1.5875mm |
1 |
3 |
Big Testing Table |
1 |
4 |
Middle-sized Testing Table |
1 |
5 |
“V”-shaped Testing Table |
1 |
|
Rockwell standard Blocks |
|
6 |
HR30T |
1 PC |
7 |
HR15N, HR30N |
TOTAL 2 PCS |
8 |
Sets of weights A、B、C |
3 sets in all |
9 |
Protective Plastic Corer |
1 |
10 |
Instruction Manual |
1 copy |
Equipment Overview:
1.The hardness is one of the important criteria of the mechanical functions of the materials, and the hardness test is
the important means to judge the quality of the metallic materials or parts.
2.The manual Superficial Rockwell hardness fester is a popularly-used hardness testing instrument to measure the
Rockwell hardness of the materials. The speed of loading the test force is regulated by the buffer whereas the change
of the test force is made by rotating the carriage-changing hand-wheel. The operation of the present instrument is
simple, its functions are stable, and its use is, therefore, widely spread.