Industry News

It is more complicated to evaluate the wear resistance of the wear-resistant steel plate. At present, it is common to test the surface hardness of the wear-resistant layer, and the higher of the surface hardness, the better of wear resistance.

The  marking of the hardness are also inconsistent. They are expressed by Rockwell hardness (HRC), also expressed in Vickers hardness (HV), and in English (B), it is very confusing ,it is recommended that the relevant departments and make  national standards for bimetal composite wear-resistant plates and unify the mark as soon as possible.

Hardness is the ability of a metal material to resist the surface of a hard object. The hardness can partially reflect the wear resistance, but it is unscientific and one-sided to mark the wear resistance of the metal by hardness, cannot fully reflect the wear resistance of the wear layer. Here we can  comprehensively analyzed and evaluated the wear resistance of bimetallic composite wear-resistant steel plates through the following aspects:

1. Rockwell hardness (HRC)
2.  Metallurgical structure: Metallographic analysis can clearly show the type, quantity, shape, size and distribution of carbides, and can also analyze the basic type composition, which is an important basis for the analysis and evaluation of wear resistance.
3. Microhardness (HV) : the microhardness of matrix and carbides.
4. The wear test machine to test the wear and tear: simulates the actual working condition to carry on the wear test, tests the weight loss or the relative wear resistance.

Through the above four aspects of testing and analysis, comprehensive evaluation, can basically judge the wear resistance of the wear-resistant plate.