1. Tempering heat treatment of stainless steel screw: Tempering heat treatment is mainly carried out by induction heating or flame heating. You can use two hardness testers to test the hardness of the nut and then determine which standard heat treatment to choose in the end. The two durometers are durometer and rockwell durometer. In addition to hardness, you can also choose from surface heat treatment thickness. For equipment that handles or uses many surface heat treated workpieces, choose a Vickers hardness tester; when the surface heat treated hardened layer is thick, a Rockwell hardness tester can also be used. Different tempering heat treatment specifications can be communicated. Because the conversion value is internationally recognized, after choosing a durometer, you should choose different grades, namely HRA grade and HRC grade.

2. Chemical heat treatment: Another heat treatment method for nuts is chemical heat treatment, which mainly places the workpiece surface in one or more chemical element atoms, and then changes the chemical composition, organization and function of the workpiece surface. . What role can you play in the future? After quenching and low temperature tempering, chemical heat treatment can make the surface of the workpiece have higher hardness, wear resistance and contact fatigue strength, and the core of the workpiece has higher strength and toughness.

3. Partial heat treatment: According to the requirements of different stainless steel screws, not all nuts require overall heat treatment, and some nuts only require partial heat treatment, which is part of the heat treatment method. Local heat treatment of stainless steel screws. If these parts require high hardness, a partial quench heat treatment can be performed using induction heating and other methods. Such parts are usually marked on the graphic with the location of the partial quench heat treatment and the part hardness value.