What properties should cold work molds have after quenching by high-frequency induction quenching machine?

Cold work dies mainly refer to cold punching, cold extrusion, bending, trimming dies, cold heading dies, etc. During the working process, they are not only subject to pressure and impact forces such as compression, stretching, bending, friction, etc., but also interact with the blank. Severe friction occurs. Therefore, many heat treatment manufacturers use high-frequency induction quenching machines to quench and heat treat it, hoping to improve its hardness, wear resistance and impact resistance. Today, the editor will tell you what properties the cold work mold should have after being quenched by a high-frequency induction quenching machine.

1. High hardness. It can ensure that no plastic deformation occurs during use, and the hardness is 58-64HRC.

2. High wear resistance. It can maintain stable dimensional accuracy and maintain low surface roughness values during long-term service.

3. Sufficient strength and toughness to ensure that it is not easy to chip, break or collapse under impact load and bending load.

4. Small heat treatment deformation ensures that molds with complex shapes that are difficult to process will not be scrapped due to excessive quenching deformation.

5. High hardenability. On the premise of ensuring a sufficient hardened layer, cooling in oil or a medium with gentle cooling (such as graded quenching or isothermal quenching) can reduce the tendency of deformation and cracking.

6. Good fatigue resistance. Can withstand alternating loads and has a high service life.

7. Strong bite resistance. It can effectively prevent the metal of stamping parts from forming "metal tumors" on the surface of the mold cavity.

The heat treatment process is an important factor affecting the quality of the workpiece heat treatment. Therefore, if we want the cold work mold to have the above-mentioned properties after high-frequency quenching, we should be particularly serious and careful when performing specific process operations to avoid the impact of operational errors. The heat treatment effect of the workpiece.