Writer：Anonymous 2019-11-05 15:55:00
Understand Vickers hardness tester
The principle of the Vickers hardness tester is to press the surface of the workpiece through the step motor, and then measure the diagonal length of the indentation by the reading microscope. After that, Vickers hardness is measured by a conversion relationship between diagonal and test force.
In addition, the software of Vickers hardness tester can be installed, and the image can be displayed through the computer screen. It is more convenient and quick to operate and measure the hardness value.
The hmt-she system can be used to measure the Vickers hardness from room temperature to high temperature. The temperature can reach 1200 ℃, which is suitable for testing the high temperature hardness of new materials such as heat-resistant metal materials and ceramic products. The Vickers hardness of different materials at a certain temperature was measured.
According to the national standard GBT 4340.2-2012, it is pointed out that the error of Vickers hardness tester is different for different forces and different values.