Hardness testing of stamping materials

The key purpose of the hardness test of stamping parts is to clarify whether the quenching level of the purchased sheet metal material is suitable for the subsequent production and processing of stamping parts. The production process of different types of stamping parts must be of different hardness levels. . Hot-rolled steel is generally thicker, and the stainless steel plate specification-generally requires a Brinell hardness tester to test the hardness. Rockwell hardness tester is also feasible to detect hot-rolled steel, and RB scale can be used. The portable Rockwell hardness tester is used to test hot-rolled steel, which can be tested without sampling standards, and the actual operation is very simple. The key to various cold-rolled plates used in the production and processing of stamping parts is to use Rockwell hardness tester to test the hardness. Generally, the RB scale is used, and the HRC scale is used for the harder ones. Metal sheet materials can use Webster hardness tester, and can also use surface Rockwell hardness tester HRN or HRT ruler. The hardness of the brass plate used for the production and processing of stamping parts can be tested with the HRB scale of the Rockwell hardness tester. RR ruler is used for the over-soft brass plate and red copper plate. RT ruler is used for thinner boards. The aluminum plate used for the production and processing of stamping parts can be tested with a Webster hardness tester. When the thickness of the material exceeds 13mm, it can be changed to a Barcol hardness tester. 1060 aluminum plate or low-hardness aluminum plate should use a Barcol hardness tester. The key material of the die shell is die steel (including alloy steel and spring steel), and sometimes hard alloy tools are also used. Stamping die and mold shell are generally required to have high hardness and wear resistance, and heat treatment process is indispensable. The key to the hardness test of mold steel is Rockwell hardness tester to test the HBC hardness value. When the mold shell is too large and it is troublesome to move, the earthquake magnitude hardness tester can be used. Rockwell hardness HBA scale is used for hardness testing of cemented carbide tools. In order to better obtain high surface hardness and wear resistance, many stamping molds and standard stamping molds must carry out surface heat treatment processes, such as surface high-frequency quenching. For such mold shells, everyone pays great attention to its surface hardness and deep hard bottom layer. For stamping molds that are not very large in volume and easy to move, the surface hardness HRN value can be immediately tested on the surface Rockwell hardness tester. The volume is large, and it is not easy to move, only the method of laser cutting the specimen can be used. After the sample is sampled, the HRH value is measured on the surface Rockwell hardness tester. You can also use a Vickers hardness tester to test the HIV value. There is also a method to make a small piece of test piece with the same material, carry out the heat treatment process under the same standard, and then measure the hardness value of the test piece. For this reason, the hardness of the stamping mold may be obtained. Surface heat treatment process The deep layer of the hard bottom layer of the stamping part mold can be tested with a Vickers or Knoop hardness tester. The hardness test of the stamping die is accompanied by the output of intermediate products and stamping products. The stamping die is accompanied by the output of intermediate products and stamping products. Hardness testing can use Opel Rockwell hardness tester. Related news: The characteristics of the main materials of stamping parts, the handling of common problems of stamping parts, the characteristics of scaffolding stamping parts and the importance of inspections