戻る
(1) As with any tool, it is necessary to know the hardness of the "object to be cut". How to compare the hardness of a material and a cutting tool?
The hardness of the material is: Rockwell hardness (C scale: HRC B scale: HRB), Brinell hardness, Vickers hardness, Shore hardness, tensile strength, etc. There are various hardness units.
(2) The tool is selected according to the hardness of the material . The hardness of the material is mainly indicated by "Rockwell hardness".