Mold steel is a special steel used to make molds, which has the characteristics of high hardness, high wear resistance and high heat resistance. In the mold manufacturing process, temperature is a very important factor, and the requirements for mold steel are also very strict. The temperature requirements for die steel will be described in detail below.
First of all, the die steel has very high requirements for heating temperature. In the mold manufacturing process, the mold steel needs to be heat-treated to change its microstructure and properties. The choice of heating temperature directly affects the hardness, toughness and wear resistance of the die steel. Generally speaking, the heating temperature of die steel should be above its critical temperature, but not above its melting point. If the heating temperature is too high, it is easy to cause the grain growth of the die steel, thereby reducing its hardness and toughness;If the heating temperature is too low, the desired tissue structure and performance cannot be achieved.
Secondly, the requirements for the cooling temperature of the die steel are also very strict. In the mold manufacturing process, the heated mold steel needs to be cooled to stabilize its structure and properties. The choice of cooling temperature directly affects the hardness, toughness and dimensional stability of the die steel. In general, the cooling temperature of the die steel should be below its critical temperature, but not below its martensitic transition temperature. If the cooling temperature is too high, it is easy to cause the instability of the microstructure of the die steel, thereby reducing its hardness and toughness;If the cooling temperature is too low, the desired tissue structure and performance cannot be achieved.
In addition, the requirements of the mold steel for the insulation temperature also need to be noted. In the mold manufacturing process, the heated and cooled mold steel needs to be insulated to further stabilize its microstructure and performance. The selection of holding temperature directly affects the hardness, toughness and dimensional stability of the die steel. Generally speaking, the holding temperature of the die steel should be near its critical temperature to maintain the stability of its microstructure. If the insulation temperature is too high, it is easy to cause the grain growth of the die steel, thereby reducing its hardness and toughness;If the holding temperature is too low, the desired tissue structure and performance cannot be achieved.
Finally, the temperature control of the die steel is also very important. In the mold manufacturing process, the temperature during heating, cooling and insulation needs to be precisely controlled to ensure that the structure and performance of the mold steel meet the design requirements. Temperature control can be achieved in various ways, such as the use of thermostatic furnaces, temperature controllers and temperature sensors and other equipment, as well as reasonable heating and cooling processes. By precisely controlling the temperature, the machining accuracy and product quality of the die steel can be improved, and the service life of the die steel can also be extended.
To sum up, die steel has very strict requirements for temperature. In the mold manufacturing process, the temperature during heating, cooling and insulation needs to be precisely controlled to ensure that the structure and performance of the mold steel meet the design requirements. The selection and control of temperature directly affects the properties of die steel, such as hardness, toughness and wear resistance, so special attention is required. Only under the premise of strict temperature control can high-quality mold products be manufactured.