Why to choose vacuum heat treatment instead of ordinary heat treatment

In the vacuum heat treatment, the workpiece is not oxidized and the steel is not decarburized. The ventilation and convection heating can make the heating uniform, reduce the temperature difference between the surface and the center, and thus reduce the distortion. At present, it has become an indispensable and preferred heat treatment process for high-quality tooling.

Why to choose vacuum heat treatment instead of ordinary heat treatment

Apart from oxide scale, is there any difference in hardness between vacuum treatment and ordinary treatment at the same temperature? Is there any other difference? In the heat treatment, why do ordinary heat treatment not use, but choose to use vacuum heat treatment? The following vacuum heat treatment plant on the above questions for a simple answer.

Vacuum heat treatment is a new type of heat treatment technology combining vacuum technology and heat treatment technology. The vacuum environment of vacuum heat treatment refers to the atmosphere environment lower than one atmospheric pressure, including low vacuum, medium vacuum, high vacuum and ultra-high vacuum. Vacuum heat treatment actually belongs to atmosphere controlled heat treatment.

Vacuum heat treatment means that all and part of the heat treatment process are carried out in vacuum state. Vacuum heat treatment can achieve almost all the heat treatment processes that can be involved in conventional heat treatment, but the quality of heat treatment is greatly improved. Compared with conventional heat treatment, vacuum heat treatment can achieve no oxidation, no decarburization, no carburization, can remove the phosphorus chips on the surface of the workpiece, and there is decarburization The function of fat degassing is to achieve the effect of surface bright purification.

Moreover, the high price of vacuum heat treatment is due to the expensive equipment and high energy consumption; the small weight of each furnace is due to the small vacuum chamber and easy vacuum pumping; the workpiece after vacuum heat treatment has stronger oxidation resistance and corrosion resistance than the ordinary heat treatment workpiece, and the microstructure is more compact.