Test hardness of the workpiece surface hardening of welded steel pipe

Test hardness of the workpiece surface hardening of welded steel pipe

Rockwell hardness of the surface is also very suitable for testing the hardness of the workpiece surface hardening, surface Rockwell hardness scale, there are three to choose from. You can test the effective hardening depth 0.1mm hardened over a variety of surfaces. Although the surface Rockwell hardness Vickers hardness tester accuracy is not high, but as the heat treatment factory quality management and testing methods qualified inspection, has been able to meet the requirements. Moreover, it also has a simple, easy to use, low price, rapid measurement, hardness value can be read directly, etc., using surface Rockwell hardness of the surface of the heat treatment can be performed on a batch-by-piece test Quick lossless.

When the surface layer is thick hardened by heat treatment may also be used Rockwell hardness. When the heat treatment hardened layer thickness at 0.4 ~ 0.8mm, can HRA ruler, when hardened layer thickness of more than 0.8mm, can HRC ruler.

Vickers, Rockwell and Superficial Rockwell hardness valuesof three can easily be converted to each other, into a standard, drawing or hardness user needs. The corresponding conversion table in the international standard ISO, American Standard ASTM and Chinese standard in GB / T are given.

Part if the local high hardness, induction heating, etc. are available locally hardening heat treatment, Hardness testing to be carried out within a specified area. Hardness testing equipment can be used Rockwell hardness test HRC hardness value, such as heat treatment hardened layer shallow surface Rockwell hardness tester can be used to test the hardness value HRN.