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questions :brinell hardness what is?
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[Visitor (140.206.*.*)]answers [Chinese ]Time :2021-05-16
The principle of the determination of The Bush hardness is to use a certain size of experimental force F (N) (the unit of force is usually kg force kgf, Note: 1kgf.9)..8N, kgf means one kilogram of force), press a quenched steel ball or carbide ball with a diameter of D (mm) into the surface of the metal under test (Figure 1), remove the test force after a specified time, measure the average diameter of the indentation d (mm) with a reading microscope, and then find out the HB value of the cloth hardness according to the formula, or find the HB value from the prepared cloth hardness table according to d...





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