|
Scale |
Type of Indenter |
Initial Test Force |
Total Test Force （N） |
Application Field |
|
HRA |
Diamond indenter |
98.07 N （10kg） |
588.4（60kg） |
Hard Alloys, Tempered steel with carbonized surface, Hardened Steel Plates |
|
HRD |
980.7（100kg） |
Thin steel plates, steel with tempered surface |
||
|
HRC |
1471（150kg） |
Quenched steel, tempered steel, hard cast iron |
||
|
HRF |
Ball indenter φ1.5875m（1/16inches） |
588.4（60kg） |
Cast iron, aluminum-magnesium alloy, bearing alloy, annealed copper alloy, thin and soft steel plate |
|
|
HRB |
980.7（100kg） |
Soft steel, aluminum alloy, copper alloy, forgeable cast iron, annealed steel |
||
|
HRG |
1471（150kg） |
Phosphorus bronze, beryllium bronze, forgeable cast iron |
||
|
HRH |
Ball indenter φ3.175mm （1/8 inches） |
588.4（60kg） |
Aluminum, Zinc, Lead |
|
|
HRE |
980.7（100kg） |
Bearing alloy, tin, hard plastic materials |
||
|
HRK |
1471（150kg） |
There are 3 Rockwell Hardness Test Scales: Scale A, Scale B and Scale C.
Ⅳ Installation of the Hardness Tester
4.1 The working conditions of the hardness tester
4.1.1 Within the room temperature of 10-30℃;
4.1.2 In the room relative humidity no superior than 65%;
4.1.3 In a surrounding without any shock or corrosive medium;
4.2 The unpacking of the hardness tester
4.2.1 Cut off the packing belts on the eternal box and unscrew out the screws on the bottom edges of the wooden box and then take off the cover and take out the accessories kit.
4.2.2 Unscrew with a spanner the 2 outer hexangular bolts M10 to separate the tester from the base place (pay attention to the safety).
4.2.3 Place the tester horizontally and steadily on the working table with the horizontality no superior than 1mm/m. while open a hole in the working table (Fig.1) so as to allow the operating lever (6) to move normally. The suggested height of the table is about 500mm.
Name: Mikrosize
Mobile：0086-13918745376
Tel：0086-769-85331789
Email：mikrosize@188.com
Add：NO7 East Xingfa Road Wusha, Changan Town, Dongguan, China.
Microsize
Microsize