The significance of the development of the application of AC plug mold surface treatment technology

The significance of the development of the application of AC plug mold surface treatment technology

As an important process equipment for the production of various industrial products, AC plug molds have made higher and higher demands on the AC plug mold industry. With the progress of modern industry and technology, how to improve the quality of AC plug molds, service life and reduce production Cost becomes a problem we urgently face and need to solve. Surface treatment technology is of great significance to the development of AC plug molds.

In addition to the reasonable coordination of the substrate with sufficient strength and toughness, the surface performance of the AC plug mold is critical to the working performance and service life of the AC plug mold. These surface properties refer to: wear resistance, corrosion resistance, friction coefficient, fatigue performance, etc. These performance improvements are very limited and uneconomical simply relying on matrix materials, and through surface treatment technology, you can often get twice the result with half the effort, which is why surface treatment technology has developed rapidly.

　　AC plug mold surface treatment technology is a system engineering that changes the shape, chemical composition, organization structure and stress state of the surface of the AC plug mold by surface coating, surface modification or composite treatment technology to obtain the desired surface performance. From the surface treatment method, it can be divided into: chemical method, physical method, physical chemical method and mechanical method. Although new processing technologies aimed at improving the surface performance of AC plug molds are emerging, the main applications in AC plug mold manufacturing are nitriding, carburizing and hardened film deposition.

　　 Nitriding technology includes gas nitriding, ion nitriding, liquid nitriding, etc. In each nitriding method, there are several nitriding technologies, which can adapt to the requirements of different steel types and different workpieces. Because the nitriding technology can form a surface with excellent performance, and the nitriding process is well coordinated with the AC plug mold steel quenching process, at the same time, the nitriding temperature is low, no intensive cooling is required after nitriding, and the deformation of the AC plug mold is extremely small Therefore, the surface strengthening of the AC plug mold was adopted by the nitriding technology earlier, and it is also the most widely used.

The purpose of the carburization of the AC plug mold is mainly to improve the overall strength and toughness of the AC plug mold, that is, the working surface of the AC plug mold has high strength and wear resistance. The technical idea introduced from this is to use lower-grade materials , That is, to replace higher-grade materials by carburizing and quenching, thereby reducing manufacturing costs.

　　 Hardened film deposition technology is currently more mature CVD, PVD. In order to increase the bonding strength of the surface of the film workpiece, a variety of enhanced CVD and PVD technologies have now been developed. The hardened film deposition technology was first applied to tools (knives, cutting tools, measuring tools, etc.) with excellent results. Many tools have adopted hardened film coating as a standard process. The AC plug mold has adopted the coating hardening film technology since the 1980s. Under the current technical conditions, the cost of hardened film deposition technology (mainly equipment) is relatively high, and it is still only applied to some precision and long-life AC plug molds. If a heat treatment center is established, the cost of coating the hardened film will be Greatly reduced, if more AC plug molds adopt this technology, it can improve the AC plug mold manufacturing level in China as a whole.

Surface treatment technology has been widely used in AC plug molds, and has made significant progress and huge economic benefits in improving the life of AC plug molds and product quality, but the application and development of advanced surface technology are still certain compared with foreign countries. difference. Full application of surface treatment technology is an important economic and efficient means to improve the life of AC plug molds, and it is also the only way to develop modern AC plug molds. Research and development of surface treatment technology suitable for precision and large AC plug molds is The key points and difficulties in developing AC plug mold surface technology.