PRODUCT CATEGORIES

Vacuum Heat Treatment Furnace

Vacuum Sintering Furnace

Vacuum Brazing Furnace

Vacuum heat treatment process key points

Process principles of vacuum heat treatment processing technology

Utilizing the phase-changing characteristics of metal in a vacuum state, there is no change in the thermodynamics and kinetics of solid-state phase transition in a vacuum that is only 0.1MPa different from the atmospheric pressure. When formulating the vacuum heat treatment process regulations, you can completely rely on the principle of solid-state phase transformation under normal pressure, and you can refer to the data of various types of tissue transformation under normal pressure. At the same time, under the action of vacuum degassing, the physical and mechanical properties of metal materials can be improved. When heated in a vacuum state, the surface elements of the metal workpiece will evaporate. The metal achieves the required vacuum degree for non-oxidation heating and surface purification, achieving less oxidation and less detachment.

Characteristics of vacuum heat treatment processing technology

(1) Advantages of vacuum heat treatment processing

Vacuum heat treatment processing is a widely used non-oxidation heat treatment technology that goes hand in hand with controlled atmosphere. It is also one of the main indicators of the advancement of current heat treatment production technology. Vacuum heat treatment can not only achieve no oxidation and no decarburization of steel parts, but also achieve pollution-free production and less distortion of workpieces. Therefore, it also belongs to the category of clean and precision production technology. At present, it has become an irreplaceable advanced technology in tool and mold production.

(2) Vacuum heat treatment process has small distortion of workpieces

The distortion amount of workpiece vacuum heat treatment is only one third of that of salt bath heating and quenching. Studying the vacuum heating methods of various materials and parts of different complexity and the distortion laws under various cooling conditions, and using computers to simulate them, is of great significance for the promotion of vacuum heat treatment technology. During vacuum heating, normal pressure or high pressure air cooling quenching, the uniformity of air flow has a great influence on the hardening effect and mass dispersion of parts. The use of computer simulation methods to study the air circulation rules in the furnace is of great significance for improving the furnace structure.

(3) Use vacuum heat treatment furnace

Modern vacuum heat treatment furnace refers to a cold wall furnace that can perform vacuum heating of components and then quench them in oil or quench them in normal pressure and pressurized gas. Research and development of this type of equipment is a comprehensive, interdisciplinary task involving many scientific and technological fields.

Vacuum heat treatment of tool and mold materials has great application prospects. Most tool and die steels are currently heated in a vacuum and then cooled and quenched in a gas. In order to obtain satisfactory mechanical properties on both the surface and interior of the workpiece, vacuum high-pressure gas quenching technology must be used.