The layer depth increases the hardness gradient distribution

Another development direction of heat treatment technology improvement is to combine traditional heat treatment technology with advanced surface treatment technology to increase the service life of die-casting molds. Loose defects also make the internal structure of the blank reach broken grains Plastic Injection Molded Automotive Parts in the forged state. Its basic process is as follows: first low-speed or high-speed casting of molten metal into the cavity of the mold, the mold has a movable cavity surface, it is pressurized forging with the cooling process of the molten metal, which eliminates the shrinkage of the blank. For example, the chemical heat treatment method carbonitriding, NQN (i.; 　　The traditional heat treatment process of die-casting mold is quenching-tempering, and later Developed surface treatment technology.Die casting mold is a method of casting liquid die forging, a process completed on a dedicated die casting die forging machine.　　 This type includes carburizing, nitriding, boronizing, carbonitriding, sulfur carbonitriding, etc. Due to the variety of materials that can be used as die-casting molds, the same surface treatment technology and process will produce different effects on different materials. carbonitriding-quenching-carbonitriding) composite strengthening combined with conventional quenching and tempering processes, not only obtains higher surface hardness, but also effectively hardens The layer depth increases, the hardness gradient distribution of the infiltrated layer is reasonable, the tempering stability and the corrosion resistance are improved, so that the die-casting mold has a good core performance, while the surface quality and performance are greatly improved. The carburizing process used in cold, hot work and surface strengthening of plastic molds can improve the life of the mold. Next, Shenzhen Plastic Mold Factory will explain to you, what are the common problems of die-casting molds and the treatment methods? 　　 (1) Coating technology, including electroless plating, etc.e. The comprehensive mechanical properties of the blank have been significantly improved. When carburizing, the main process methods include solid powder carburizing, gas carburizing, vacuum carburizing, ion carburizing, and carbonitriding formed by adding nitrogen to the carburizing atmosphere.. This technology has the characteristics of fast carburization, uniform carburization, smooth carbon concentration gradient, and small workpiece deformation. On the basis of traditional technology, it proposes suitable processing technology for different mold materials to improve mold performance and increase mold life. (2) Improvement technology of traditional heat treatment process; 　https://www.nbtianke.com/product/high-speed-thin-wall-injection-molding/


Surface modification technology, including surface thermal expansion treatment, surface phase change strengthening, electric spark strengthening technology, etc. Play an increasingly important role in surface treatment. Yutongda recently proposed substrate pretreatment technology for mold substrate and surface treatment technology. Among them, vacuum carburizing and ion carburizing are technologies developed in the past 20 years. It will be on the surface of the mold, especially the precision mold