Vacuum heat treatment of special materials

To have difficulty disaster countermeasures to prevent automated process stability single do not meet the requirements of environmental protection for the operator as hills per ha oxygen probe, infrared meter high knowledge base ring An good good bad special alloy easy difficult high hills per ha cheap operating cost low equipment investment from the vacuum heat treatment using a vacuum technology to reduce the partial pressure of oxygen in the atmosphere, it is easier to implement than the controlled atmosphere heat treatment bright heat treatment (impurity content of less than one over one thousand of one percent to controlled atmosphere.

In particular, the gas released from the material is removed from the furnace in time to prevent oxidation of the surface of the workpiece. Vacuum heat treatment with degreasing, rust on the surface, surface is able to high degree of purification and activation, and easy to realize controllable slowly heating, and rapid cooling, so the vacuum heat treatment deformation is small. Compared with the vacuum carburizing, even the high level of controllable atmosphere can’t avoid the boundary layer oxidation layer of 10U. The controlled atmosphere requires strict management and control of the carbon potential and other chemical quantities. The vacuum heat treatment can only be controlled by the physical quantity such as pressure, which is easy to be automated and the product quality is stable. Vacuum heat treatment can use nitrogen, argon and other inert gases to cool, safe, pollution-free, and pollution-free environment.

As a result of above characteristic, vacuum heat treatment has the advantages of the controlled atmosphere heat treatment is more, and because of good quality, little deformation, energy saving and safety features, such as controlled atmosphere heat treatment in the world since the recent tendency to vacuum heat treatment are on the rise. For many materials, special requirements hills per ha temperature treatment (> 1000 c), low temperature (30075 (TC) and active metal (such as qin), or containing active element (Ti, Nb) higher material, the best choice of the vacuum heat treatment is necessary.