The heat treatment of die steel is too hard, which means that during the heat treatment process, the hardness of the die steel exceeds the design requirements or use requirements. This situation may lead to an increase in the brittleness of the die steel, reducing its toughness and impact resistance, which will affect the service life and performance of the mold. Here are some ways to solve the problem that die steel heat treatment is too hard.
Re-heat treatment: If the hardness of the mold steel exceeds the design requirements, re-heat treatment can be considered. Heat treatment is a method of altering the structure and properties of a material by controlling its heating and cooling processes. Reheat treatment can control the hardness of the die steel by adjusting parameters such as heating temperature, holding time, and cooling rate to make it meet the design requirements.
2.Annealing: Annealing is a commonly used heat treatment method that can change the structure and properties of a material by heating and slow cooling. For hard die steels, annealing can be carried out to reduce their hardness. The choice of annealing temperature and holding time should be determined according to the specific die steel material and hardness requirements.
3.Quenching and tempering treatment: Quenching and tempering is a commonly used heat treatment combination method, which can be quenched to achieve the required hardness of the die steel, and then tempered to improve its toughness and impact resistance. For die steels with excellent heat treatment, quenching and tempering treatment can be considered to adjust its hardness and performance.
4.Adjust the heat treatment process parameters: The selection of heat treatment process parameters is very important to control the hardness of the die steel. The hardness of the die steel can be controlled by adjusting parameters such as heating temperature, holding time, cooling rate, etc. Reasonable selection of heat treatment process parameters can make the die steel achieve the hardness required by the design.
5.Choosing the right mold steel material: The choice of mold steel is also very important to control the hardness after heat treatment. Different die steel materials have different heat treatment characteristics, and choosing the right die steel material can reduce the risk of excessive hardness after heat treatment.
6.Optimize mold design: The design of the mold will also affect the hardness after heat treatment. Reasonable mold design can reduce the possibility of excessive hardness after heat treatment. For example, through a reasonable cooling system design, the cooling rate of the die steel can be controlled, and thus its hardness can be controlled.
In short, die steel heat treatment too hard can be solved by re-heat treatment, annealing treatment, quenching and tempering treatment, adjusting heat treatment process parameters, selecting appropriate die steel materials and optimizing mold design. In practical application, the appropriate method should be selected to adjust the hardness of the die steel according to the specific situation to meet the design and use requirements.