Reasons behind the Popularity of Vacuum Heat Treatment

Reasons behind the Popularity of Vacuum Heat Treatment

Manufacturing Technology Insights | Wednesday, July 21, 2021

Air is a little mixture of humidity, oxygen, carbon dioxide, hydrogen, and many other gases that helps all living things stay alive. It is, however, not suitable for the metals found in most of the surrounding infrastructure, which, given the appropriate circumstances, react with moisture and oxygen in particular.

FREMONT, CA: Heat is frequently required to manipulate metals; yet, heat can enable metals to react with air faster. This heat treatment affects the characteristics of the metal by creating a more rigid or softer skin or coating on the metal's surface.Therefore, it is beneficial to eliminate all air and reactive elements in a vacuum chamber to avoid this oxidation process – where oxygen has reacted with the metal.

In the inert atmosphere, vacuum heat treatment is a process of hardening metals at extremely high temperatures. It creates an unreactive environment using a vacuum with an absolute pressure lower than that of the familiar atmosphere.Throughout vacuum heat treatment, metal components get assembled in a securely enclosed treatment chamber. A vacuum pumping system eliminates as much air as possible, leaving no room for the metal to react.

The metal parts are placed in a tightly sealed treatment chamber with a vacuum pumping system during vacuum heat treatment. Vacuum heat treatment has three critical advantages over other methods of hardening metals: the pieces do not require further forming, there is no scaling or discoloration, and there is no need for additional cleaning.The technique helps to improve the condition of the metal alloy by allowing for uniform treatment of the metal's surface, a faster cooling process, and an increase in the alloy's lifespan and functioning. As much air as necessary so that the metal has nothing to react with.

Applications of Vacuum Heat Treatment

Metal-based superalloys (heat-resistant materials based on nickel, like iron-nickel or cobalt-nickel), reactive and refractory materials, such as titanium, and stainless steel of different varieties are all subjected to vacuum heat treatment. Some brass or bronze parts of musical instruments may still be subject to the treatment as well.The procedure is utilized for functions that must endure extreme heat and other pressures during regular operation, such as airplane engines and exhaust pieces, which are notoriously difficult to create in the first place.

Vacuum heat treatment is a method of treating rigid metal components while also providing extra benefits to the metal is treated, such as strength and cleanliness, in an environmentally friendly procedure with no hazardous side effects. It easy to see why vacuum heat treatment is becoming increasingly popular when the industry would be encouraged to be more environmentally conscious.

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