After the stamping process is finished, hardness testing is required and the test is not qualified. What kind of hardness testing is there?
1. Brinell hardness: mainly used to determine the hardness of castings, forgings, non-ferrous metal parts, hot-rolled billets and annealed parts, such as stamping parts, the determination of the scope of HB450.
2. Rockwell hardness: hardness testing using the Rockwell hardness tester. Small, complex shaped stamping parts can be used to test a very small plane and can not be tested on a common table Rockwell hardness tester for high hardness test parts. The hardness of materials and surface hardness above HRC67, such as hard alloy, nitriding steel, etc., can be measured, such as hard alloy, nitriding steel, etc., HR measurement range HR HRC is mainly used to determine the hardness of steel parts (such as carbon steel, tool steel, alloy steel, etc.) after quenching or tempering.
Vickers hardness: used to determine the hardness of thin and steel plate parts, but also can be used to determine carburizing, cyaniding, nitriding and other surface hardening parts of the hardness.
There are more than one kinds of hardness testing, and different hardness types can be tested according to different stamping parts.