Zhengzhou Gou's talk about the process of heat treatment of turning tools with high-frequency induction heating equipment

As an important tool for cutting metal materials on machine tools, turning tools require high hardness, wear resistance, sufficient strength and wear resistance. In order to make turning tools meet these requirements, we often use high-frequency induction heating equipment to heat them. Zhengzhou Gou's will tell you about the heat treatment process of high-speed tool steel turning tools.

1. Preheating and heating of high-speed tool steel turning tools. In order to ensure that this type of turning tool will not be oxidized and decarburized when heated, high-frequency induction heating equipment is generally used to preheat and heat it. Large or special-shaped turning tools must be preheated twice, namely at 500~600℃ and 850~900℃. The general heating principle is: the temperature should be high and the time should be long to carbonize small particles. The materials should be fully dissolved as much as possible, but overheated and over-burned structures such as network carbides are not allowed to appear. The quenching heating time is 8-15s/mm.

2. Cooling and tempering of high-speed tool steel turning tools. The quenching cooling medium for high-speed tool steel turning tools is oil or compressed air. The oil temperature is controlled at 40~60℃. For complex shapes, the oil temperature is increased to 120~140℃. When the tool is cooled in oil to 300~100℃, air cooling is required . In order to prevent the turning tool from quenching and reducing deformation, a graded cooling method of 580 to 620°C can be used. For small sizes, it can be insulated in nitrate salt at 240 to 280°C for 1.5 to 2 hours, which can significantly reduce deformation and cracking, and then oil cooling or Cool in air. The high-temperature tempering should be carried out two or three times to improve the hardness and toughness of the turning tool. The tempering temperature is 540~590℃. The amount of retained austenite is reduced, the turning tool is secondary hardened, and the hardness of the turning tool is improved.

This is an introduction to the process of heat treatment of high-speed tool steel turning tools using high-frequency induction heating equipment. As a manufacturer of high-frequency induction heating equipment, Zhengzhou Gou's equipment has complete functions, simple operation, and small size. It is a good equipment for heat treatment of turning tools and other workpieces. If you want to know more detailed equipment information or heat treatment information, please call us.