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Vacuum annealing

Vacuum annealing:

the process of annealing in an atmosphere below one atmospheric pressure. Or under inert gas in the vacuum, the metal slowly heated to a certain temperature, keep enough time, then cooling with appropriate speed (usually slow cooling, sometimes is controlled cooling of a metal heat treatment process.

The purpose of vacuum annealing:

through annealing, it can soften, improve plasticity and toughness, homogenize chemical composition, remove residual stress, obtain expected physical properties, and:

Suitable for deep drawing of stainless steel pieces of warm water equipment, water swelling, pin, medical equipment, stainless steel nails, stainless steel wire the self-contained, pressure riveting pieces, stainless steel bearings, watchcase, strap, cutting tool, micro shaft, tapping drilling, tableware and other stainless steel products under the protective atmosphere control continuous bright annealing, quenching, demagnetization and stainless steel quenching treatment of multi-purpose furnace. After treatment, the product surface is clean, not oxidized, not decarburized. It has the advantages of high production efficiency, low energy consumption, low pollution, convenient operation and low labor intensity.


Vacuum annealing


Vacuum annealing furnace types:

internal and external heated vacuum furnace, vacuum furnace with internal vacuum furnace is divided into horizontal and vertical vacuum annealing furnace, vacuum annealing furnace and single chamber vacuum annealing furnace and double room, triple chamber vacuum annealing furnace.

Use of vacuum annealing:

1. By annealing, it can soften, improve plasticity and toughness, homogenize chemical composition, remove residual stress, and obtain expected physical properties.

2, vacuum annealing is suitable for deep drawing of stainless steel pieces of warm water equipment, water swelling, pin, medical equipment, stainless steel nails, stainless steel wire the self-contained, pressure riveting pieces, stainless steel bearings, watchcase, strap, cutting tool, micro shaft, tapping drilling, tableware and other stainless steel products under the protective atmosphere control continuous bright annealing, quenching, demagnetization, processing after good product surface is bright and clean, no oxidation, no decarburization, carburizing, can remove phosphorus crumbs on the surface of the workpiece, and has the effect such as degreasing degassing, so as to achieve the surface brightness purification effect.

3. Especially tools, molds and precision couplings. After the vacuum heat treatment, the service life is much higher than that of general heat treatment. For example, after vacuum heat treatment of certain molds, the life expectancy of some molds is 40 ~ 400% higher than that of the original salt bath, and the life of many tools can be increased by 3 ~ 4 times.


Vacuum annealing

Vacuum annealing


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