Mon, 11 Jun 2018 03:08:29 +0000
Heat treatment effect of vacuum furnace
1) advantages of vacuum furnace heat treatment. Vacuum furnace heat treatment is a kind of non-oxidizing heat treatment technology with controllable atmosphere and it is also one of the main marks of advanced heat treatment technology. Vacuum furnace heat treatment not only can be realized without oxidation and decarburization of steel, but also can realize the production of pollution-free and less distortion of the workpiece, so it also belongs to the category of clean and precise production technology. At present, it has become an irreplaceable advanced technology in tooling production.
2) vacuum furnace heat treatment process. Small distortion of workpiece is a very important advantage of vacuum furnace heat treatment. According to the experience at home and abroad, the distortion of heat treatment in the workpiece vacuum furnace is only one third of that in the salt bath. Research of various materials, the degree of complex parts of the vacuum furnace heating mode and distortion law of various cooling conditions, with computer simulation, is of great significance for the promotion of vacuum furnace heat treatment technology. The uniformity of air flow during the quenching of box furnace under normal pressure or high pressure has great influence on the hardening effect and quality dispersion of parts. It is of great significance to improve the structure of furnace by using computer simulation to study the air circulation in furnace. The vacuum furnace carburizing is the most possible way to achieve high temperature carburizing.
3) vacuum furnace heat treatment furnace. Modern vacuum furnace heat treatment furnace is a kind of cold wall furnace that can be heated by vacuum furnace of components and then quenched in oil or hardened in normal pressure and pressurized gas. The research and development of this type of equipment is a comprehensive, interdisciplinary work involving many scientific and technological fields. The application of heat treatment in vacuum furnace of mould material has a great prospect. Most die steel is currently heated in a vacuum furnace and then cooled and hardened in gas. In order to obtain satisfactory mechanical properties both on the surface and inside the workpiece, the high pressure gas quenching technology of vacuum furnace must be adopted. Therefore, it is an important development trend to increase the cooling gas pressure of high pressure gas quenching vacuum furnace. In addition to the high pressure gas quenching, and then fill in the vacuum furnace after high-pressure inert gas as of convection heating can be compared to a traditional vacuum furnace radiation heating speed is more than double, so as to improve heating efficiency is one of the important direction of the vacuum furnace heating technology. The development towards multi-function is also one of the trends of vacuum furnace. Of oil quenching in the front room, in the chamber atmospheric or high pressure gas quenching vacuum furnace heating or heating chamber in the middle of the plasma carburizing semicontinuous vacuum furnace heat treatment equipment is one of the typical examples. At present the domestic market already had this kind of furnace type demand reflection. Various continuous vacuum furnace carburizing, high pressure, air cooling, quenching and tempering production lines which can meet the needs of mass production have been developed successively.
Label: vacuum furnace vacuum heat treatment