Vacuum furnaces are used in many applications in all industries. Vacuum is one of the ways to protect heated steel and metal parts from the negative effects of air atmosphere. A vacuum furnace is usually an electrically heated furnace in which a vacuum is maintained during the process. Most vacuum furnaces are heated by resistive elements made of graphite, ceramic, or metal.
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Vacuum furnaces can heat metals to very high temperatures with minimal contamination problems because the heating takes place in a vacuum. The lack of oxygen makes it almost easy to heat metals.
&#;Uniform temperature over the range. 800-3,000 °C (1,500-5,400 °F )
&#;Temperature can be controlled within the heating zone, which is usually surrounded by insulation or thermal barriers.
&#;Low contamination of the product by carbon, oxygen, and other gases.
&#;Vacuum pumping systems remove byproducts from the process material during the heating process, resulting in a higher purity end product.
&#;Rapid cooling (quenching) of the product can be used to shorten the process cycle time.
&#;The process can be computer controlled to ensure repeatability.
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The difference between an atmosphere furnace and a vacuum furnace is that vacuum heat treatment technology is an integrated technology connected with heat treatment technology and vacuum heat treatment technology, which is a total and partial heat treatment performed under a vacuum. process. China classifies vacuum into four kinds: low vacuum, medium vacuum, high vacuum and ultra-high vacuum. At present, the task vacuum of most medium-frequency vacuum heat treatment furnaces is 1.33~1.33×10-3pa.
Vacuum heat treatment can complete almost all heat treatment processes, such as quenching, annealing, tempering, carburizing, nitriding, air quenching, oil quenching, nitrate quenching, water quenching, etc., while vacuum brazing, sintering, surface treatment, etc. The difference between the atmosphere furnace and the vacuum furnace also lies in the high thermal efficiency of the vacuum heat treatment furnace, which can achieve rapid leveling and cooling, can be completed without oxidation, decarburization, non-carburization, can remove phosphorus chips from the surface of the workpiece, and has the effect of degreasing and degassing, and then achieve the effect of surface brightness and purification. The vacuum heat treatment process has good invariance and repeatability. This series of advantages, the development of vacuum heat treatment equipment and technology is more and more attention and more widely used.
Vacuum furnaces are used to perform processes such as annealing, brazing, sintering and heat treatment with high consistency and low pollution. Please contact HAOYUE to get your unique solutions.
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