As an important process equipment for the production of various industrial products, people are increasingly demanding mold industry. Facing the progress of modern industry and technology, how to improve the quality, service life and reduce the production cost of mold has become an urgent problem we are facing and need to solve. Surface treatment technology is of great significance to the development of mould.
In addition to the requirement of high strength and toughness, the surface performance of the die plays an important role in the performance and service life of the die. These surface properties refer to wear resistance, corrosion resistance, friction coefficient, fatigue performance, etc. The improvement of these properties only depends on the improvement and improvement of the substrate, which is very limited and uneconomical. Through the surface treatment technology, we can usually get twice the results and half the efforts, which is the reason for the rapid development of the surface treatment technology.
Mold surface treatment technology is a systematic engineering to change the mold surface morphology, chemical composition, structure and stress state through surface coating, surface modification or composite treatment technology, so as to obtain the required surface performance. The surface treatment methods can be divided into chemical method, physical method, physical chemical method and mechanical method. Although new processing technologies are emerging to improve the surface properties of the mold, nitriding, carburizing and hardening film deposition are the main applications of mold manufacturing.
At present, CVD and PVD are the mature deposition technologies. Various enhanced CVD and PVD technologies have been developed to improve the bonding strength of membrane workpieces. Hardening film deposition technology was first applied to tools (tools, cutters, measuring tools, etc.) with excellent results. Various tools are coated with hardening film as the standard process. Since the 1980s, the mold has been coated with a hardener film. Under the current technical conditions, the cost of hardening film deposition technology (mainly equipment) is relatively high, but it is only applied to some precision and long-life molds. If the heat treatment center is established by the method adopted, the cost of hardening film coating will be greatly reduced, and more die if this technology is used, the mold manufacturing level can be improved as a whole in China.
The surface treatment technology has been widely used in the mold, and has made remarkable progress and huge economic benefits in improving the mold life and product quality. However, there is a certain gap between the application and development of advanced surface treatment technology and foreign countries. The surface treatment technology of complete application program is an important economic and effective means to improve the life of mold, and also the only way to develop modern mold. The research and development of surface treatment technology is applicable to precision and large-scale mold, which is the key and difficult point to develop mold surface technology.
The above is a detailed introduction of Shandong mold surface treatment and breakthrough points. For more information, please click http://www.jnhjgs.cn