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Vacuum Heat Treatment Furnace
A pressure vessel is pumped out with a vacuum pump to produce a pressure less than atmosphere. In most applications, another gas is injected back into the vessel. The gas aids in heat transfer and aids in other surface treatments such as Ion-Nitriding and carburization.
The heat treating process takes place inside a vessel that is airtight. The entire heat treating process can take place under vacuum or precisely controlled atmospheres can be introduced. Heat treating under vacuum can: prevent surface reactions, such as oxidation or decarburization; remove surface contaminants such as oxide films and residual traces of lubricants; add a substance to the surface layers of the work; remove dissolved contaminating substances from metals by means of degassing.
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