Die casting mold surface treatment principle
Publish Time: 2024-04-16
Die casting mold is the main category in molds. With the rapid development of China's automobile and motorcycle industries, the die-casting industry has ushered in a new era of development. At the same time, higher requirements are also put forward for the mechanical function of die casting mold life. With the progress of the times, it is still difficult to satisfy the functional requirements of new molds that rely solely on information from time to time. It is necessary to integrate various appearance and processing capabilities, and the appearance processing of Die casting mold can be achieved with Die casting mold, high precision and Long life and high efficiency. For various types of molds, the premise of die casting mold tasks is even more demanding. In the process of repeated tasks of forging and hot metal contact, molten metal under high pressure, high-speed die casting mold cavity filling, therefore requires high heat die casting mold, thermal conductivity and wear resistance, corrosion resistance, affecting toughness, red hardness, Excellent mold release, etc. Therefore, the appearance treatment technology of die casting mold is relatively high. In recent years, various die casting molds have appeared from time to time with new technology appearance treatment, but they can generally be divided into three categories:1. Improve skills in traditional heat treatment process;2. Appearance modification skills, including thermal diffusion treatment appearance, appearance phase change strengthening and spark strengthening skills;3. Electroplating skills, including chemical plating, etc.The traditional die casting mold heat treatment process is quenching-tempering for future appearance treatment capabilities. Various information can be used as the difference between die casting mold, the difference between the information of the divergence event that is the result of the same appearance processing skills and technology. Markov compares mold substrate processing technology and traditional technology based on the differences in appearance mold data of substrate pre-treatment technology, history, and processing technology to improve mold performance and gradually mold life. Another skill to improve the development of bias heat treatment is the use of traditional heat treatment technology and advanced treatment processes to improve the appearance and improve the life of the die casting mold. The chemical heat treatment method of carbon and nitrogen infiltration treatment, and the practical quenching and tempering processes, etc. connect the NQN part (i.e., carbon and nitrogen infiltration - quenching - carbonitriding) composite strengthening, not only the appearance hardness, but also the useful hardened layer Depth, additional layer hardness gradient diffusion is reasonable, tempering invariance and corrosion resistance are improved, and then die casting mold is obtained to obtain a superior core part with the appearance of significant progress in quality and functionality.
