Heat treatment equipment system can engage in creative work

The current status of furnaces for heat treatment equipment in China is: more periodic furnaces, fewer continuous furnaces, low efficiency and large energy consumption; more air furnaces, less atmosphere jealousy, severe oxidation and decarbonization of workpieces, difficult to guarantee quality, low degree of automation, human factors The impact is large, the quality is unstable, the proportion of the salt bath furnace is quite large, the working conditions are poor, and the pollution is serious; more than half of the furnaces are over 30 years old and are out of repair, low thermal efficiency, serious heat dissipation, and high cost. Since the reform and opening up, China has introduced a large number of heat treatment equipment from the United States, Japan, Germany, Switzerland, Austria and other countries, including sealed box multi-purpose furnaces, empty heat treatment furnaces, and induction heating equipment. Nevertheless, there is still a considerable gap between the relatively advanced industrial countries and the booming industrial construction requirements, and the overall level is very low.
At present, the application of computer is the only way to transform the traditional technology of heat treatment to modernize it. It includes three aspects: one is the application of the computer in heat treatment parameters and management, the other is the application of the computer in the production process control, and the third is the application of the computer in the equipment manufacturing process. The self-developed infiltration layer concentration distribution control technology has been used in production. The microcomputer dynamic controllable nitriding and dynamic carbon potential control technology has been included in the "National Key Scientific and Technological Achievement Promotion Plan" in 1993, and the promotion situation is good. The industrial electric furnace CAD system suitable for electric furnace factory has been running for many years. The system has 24 terminals. In addition to functions such as computer drawing, basic gallery and graphic file management, it is also equipped with a comprehensive database and basic calculation subsystem for electric furnace design. The heat treatment equipment system can free designers from tedious and repetitive work and engage in creative work.
Vacuum heat treatment equipment has the advantages of no oxidation, no decarburization, bright workpiece surface, small deformation, no pollution, energy saving, high degree of automation, and wide range of application. It is one of the new technologies for heat treatment that has developed rapidly in recent years, especially Great progress has been made in the surface modification of aviation materials. Many newly developed advanced heat treatment technologies, such as vacuum high-pressure gas quenching and vacuum chemical heat treatment, also need to be implemented under vacuum. The use of vacuum heat treatment technology can greatly improve the quality and service life of structural materials, tools and molds, and is especially suitable for the heat treatment of some precision parts. With the development of vacuum heat treatment technology, vacuum heat treatment equipment such as vacuum tempering furnace, vacuum quenching furnace, vacuum annealing furnace, vacuum carburizing furnace, vacuum sintering furnace, vacuum brazing furnace, etc. have been successfully developed in China. The manufacturing technology and equipment level continue to improve, and the vacuum degree has gradually reached the international level, but there is still a certain gap between foreign countries and foreign countries in terms of automatic control and fine processing, especially in the stability of ultra-high vacuum furnace performance. Improvement of preparation level.
In industrially developed countries, the proportion of vacuum heat treatment equipment has reached about 20%, and China currently has about 1200 vacuum heat treatment furnaces, accounting for about 1% of the total number of heat treatment furnaces. There is a large gap with foreign countries. It is expected that with the heat treatment industry in the future The technological progress and the requirements for the quality of heat-treated workpieces are becoming higher and higher, and vacuum heat treatment will have greater development. As a surface chemical heat treatment process, ion nitriding has a series of advantages: fast nitriding speed, easy control of nitriding layer structure, small distortion, good mechanical and physical properties such as hardness, brittleness, and wear resistance; surface before and after nitriding The cleaning process is simple; easy to achieve local nitriding; save energy and raw material consumption and reduce environmental pollution. Therefore, as soon as this technology came out, it received attention. It developed rapidly in the 1970s, and its production and application became more and more widespread. With the development of electronic technology and computer technology, the emergence of high-power electronic and electrical components, the power supply and control technology of ion nitriding equipment have been greatly improved.