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Follow on Google News | ![]() Vacuum Heat Treatment TechnologyVacuum heat treatment is a new type of heat treatment technology that combines vacuum technology with heat treatment technology.
By: SANS Machining Definition and Principles of Vacuum Heat Treatment Vacuum heat treatment refers to the metal heat treatment process in which metal materials are heated under a pressure lower than one atmosphere (i.e., under negative pressure). It involves heating, insulating, and cooling metal materials in a vacuum environment to improve their physical and chemical properties. The working principles of vacuum heat treatment technology mainly involve the following steps: -Vacuum Conditions: The vacuum furnace extracts internal gases to reduce pressure, creating a low-pressure, oxygen-free environment. This environment avoids oxidation, corrosion, and other issues. -Heating: Heating elements inside the vacuum furnace (such as resistance wires or resistance furnaces) convert electrical energy into thermal energy, heating the material to the required processing temperature. -Insulation: -Cooling: After turning off the heating elements, the cooling system is activated, typically using water or gas cooling, to rapidly lower the temperature and solidify the material's microstructure. Vacuum Heat Treatment Techniques Vacuum heat treatment techniques for molds include vacuum quenching, vacuum tempering, vacuum carburizing, vacuum nitriding, and vacuum metal infiltration. – Vacuum Quenching: Vacuum quenching refers to the process of heating and rapidly cooling mold materials in a vacuum environment to achieve hardening and strengthening. The vacuum environment avoids oxidation and decarburization, resulting in better surface quality and higher hardness. Additionally, vacuum quenching reduces the risk of deformation and cracking. It is widely used in the treatment of various mold steels, high-speed steels, and stainless steels to improve their wear resistance, impact resistance, and service life. – Vacuum Tempering: Vacuum tempering refers to the process of heating and slowly cooling quenched mold materials in a vacuum environment to eliminate quenching stress and improve material toughness. Vacuum tempering reduces deformation and cracking during use while enhancing the mold's toughness and impact resistance. It is commonly used as a follow-up treatment to ensure stable performance during use. The Whole post at https://www.sansmachining.com/ End
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