What properties should hot work die steel have after heat treatment with medium frequency induction heating equipment?

Hot work die steel mainly refers to hot forging dies, hot extrusion dies, hot heading dies and die-casting dies. During the service process, it must withstand frequent impact loads, that is, it must withstand large compressive stress, tensile stress, and bending stress. , the strong friction force generated by the deformation of hot metal in the cavity. In addition, due to the effects of salt, water, oil, air and other media, a certain dimensional stability and service life must be maintained. In order to meet the needs of hot work die steel work, many heat treatment manufacturers use medium frequency induction heating equipment for heat treatment, and it is said that the effect is very good. Today, the editor will tell you about the properties that hot work die steel should have after medium frequency heat treatment.

1. Maintain high mechanical properties at high temperatures. After the mold cavity comes into contact with high-temperature metal of 1000-1200°C, its own temperature is 300-600°C, and can reach 1000°C in some places. When the mold works at such a high temperature, it must have Sufficient strength, toughness, hardness and wear resistance, and good tempering stability.

2. Good thermal fatigue resistance. Molds are prone to fatigue cracks during repeated heating and cooling, so they should be resistant to thermal fatigue.

3. High hardenability. It can ensure that larger molds have uniform hardness inside and outside after quenching to meet their working needs.

4. Good thermal conductivity. The mold has good thermal conductivity, which can facilitate the timely dissipation of accumulated internal heat and avoid excessive internal and surface temperatures, which will reduce its service life.

5. Good processability and antioxidant ability. For hot upsetting dies and hot extrusion dies, they have to be in contact with hot metal for a long time and the temperature is relatively high. They must have thermal fatigue resistance and tempering stability. For die-casting dies, they must also resist flowing metal. erosion and corrosion.

The heat treatment process is a key factor affecting the quality of the workpiece heat treatment. Therefore, if you want the hot work die steel after heat treatment to achieve the above-mentioned properties, everyone must be serious and careful when performing process operations.