Heat treatment equipment system

The system accuracy is an important index to measure the heat treatment equipment. In the actual system accuracy test, it is generally considered that the system accuracy test is difficult to be qualified. This paper analyzes the factors affecting the system accuracy and their solutions from the aspects of process instrument system, test instrument, measurement method, etc.

What are the creative jobs of heat treatment equipment system?

The current situation of furnaces for heat treatment equipment is as follows: more periodic furnaces, less continuous furnaces, low efficiency and large energy consumption; more air furnaces, less atmosphere jealousy, serious oxidation and decarbonization of workpieces, poor quality assurance, low degree of automation, great influence of human factors, unstable quality, large proportion of salt bath furnaces, poor working conditions and serious pollution; more than half of the furnaces are over 30 years old and in disrepair 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 type multi-purpose furnace, air heat treatment furnace, induction heating equipment, etc. However, there is still a considerable gap between the requirements of the advanced industrial countries and the booming industrial construction, and the overall level is very low.

At present, the application of computer is the only way to modernize the traditional heat treatment technology. It includes three aspects: one is the application of computer in heat treatment parameters and management; the other is the application of computer in production process control; the third is the application of computer in equipment manufacturing process. The concentration distribution control technology developed by our country has been used in production, and the dynamic controllable nitriding and dynamic carbon potential control technology of microcomputer has been listed in the key promotion plan of national scientific and technological achievements in 1993, and the promotion is in good condition. The CAD system of industrial electric furnace has been running for many years. The system has 24 terminals. In addition to the functions of computer drawing, basic drawing base and drawing file management, it is also equipped with comprehensive database and basic calculation subsystem of electric furnace design. The heat treatment equipment system can free the designers from the tedious 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 a wide range of applications. It is one of the new heat treatment technologies that has developed rapidly in recent years, especially in the surface modification of Aeronautical 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 vacuum heat treatment technology can greatly improve the quality and service life of structural materials, tools and dies, 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. In industry, the manufacturing technology and equipment level of vacuum furnace have been continuously improved, and the vacuum degree has gradually reached the international level, but in the automation control and device's There is still a certain gap between the fine machining and foreign countries, especially in the stability of ultra-high vacuum furnace performance, which needs to be improved in the level of precision device preparation.

In the developed countries, the proportion of vacuum heat treatment equipment has reached about 20%, while at present, there are about 1200 vacuum heat treatment furnaces in China, accounting for about 1% of the total number of heat treatment furnaces. There is a big gap between China and foreign countries. It is expected that with the technical progress of heat treatment industry and the higher requirements for the quality of heat treatment workpiece, vacuum heat treatment will have a greater development in the future. 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, wear resistance, etc.; simple surface cleaning treatment before and after nitriding; easy to realize local nitriding; saving energy and raw material consumption and reducing environmental pollution, etc. Therefore, as soon as this technology comes out, it has been paid attention to, developed rapidly in the 1970s, and has been widely used in production. 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 has been greatly improved.