Introduction to die steel nitriding treatment technology
1. The principle of nitrid treatment of die steel
The principle of nitriding treatment of die steel is to place the die steel in the nitriding medium, and the nitrogen atoms on the surface penetrate into the surface of the die steel under high temperature conditions, and chemically react with Fe elements to form nitrides with higher hardness. Nitriding can be achieved by different methods such as high-temperature gas nitriding, impregnation nitriding, salt bath nitriding, etc. Among them, high-temperature gas nitriding is the most commonly used method, which has the advantages of low cost and good treatment effect.
Second, the process of nitrid treatment of die steel
The process of nitriding of die steel includes pretreatment, nitriding treatment and post-treatment. First of all, the die steel needs to be fully cleaned and degreased to ensure the treatment effect. Next, the die steel is placed in a nitriding furnace where parameters such as temperature, pressure, and processing time are controlled to allow the nitrogen to permeate the surface. The choice of nitriding time and temperature is related to the material, shape and hardness requirements of the die steel. Finally, the whole process is completed by cooling and cleaning the nitrided die steel.
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3. Application of nitrid treatment of die steel
Die steel nitriding treatment is widely used in mold manufacturing, construction machinery, auto parts and other fields. First of all, nitriding treatment can effectively improve the hardness and wear resistance of the die steel, and prolong the service life of the mold. Secondly, nitriding treatment can also improve the corrosion resistance of the die steel and reduce the oxidation and corrosion of the mold surface. In addition, nitriding treatment can also increase the adhesion of die steel with coatings and lubricants, and improve the surface quality of the mold and the processing accuracy of the product.
Fourth, the advantages and precautions of die steel nitriding treatment
First, the advantages of die steel nitriding treatment
Improve hardness and wear resistance: After nitriding treatment, the nitriding layer formed on the surface of the die steel is harder than that of the raw material, which can effectively resist wear and scratch and prolong the service life of the mold.
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Enhance corrosion resistance: the mold will be eroded by various corrosive media during use, and a dense nitriding layer will be formed on the surface of the mold steel after nitriding treatment, which can effectively resist corrosion and improve the corrosion resistance of the mold.
Improve machining accuracy: Nitriding treatment can improve the surface quality and hardness of die steel, making it more suitable for processing products that require high precision, and improving machining accuracy and product quality.
Increase the adhesion of coating and lubricant: The surface of the die steel after nitriding treatment has high surface energy, which can increase the adhesion with the coating and lubricant, and improve the surface quality and durability of the product.
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