5 kinds of heat treatment methods for vacuum furnace

1.Controlled atmosphere heat l treatment:

Controlled thermal treatment is mainly to prevent oxidation and decarbonization and to control carburizing and nitriding accurately. According to the requirements of users, a variety of moderate price, diversified styles, excellent performance of controllable atmosphere furnace are provided. Most of them can optimize, predict and control the distribution of carbon concentration accurately, and obtain the ideal concentration distribution and infiltration layer structure; can realize computer management with simple menu design and friendly man-machine interface.
2.Vacuum heat treatment:
The application and development of vacuum heat treatment technology have been further improved and popularized. It has the characteristics of no oxidation, no decarbonization, clean and bright surface after quenching, high wear resistance, no pollution, and high automation. Vacuum annealing, vacuum degassing, vacuum oil quenching, vacuum water quenching, vacuum gas quenching, vacuum tempering and vacuum carburizing are widely used in industrial production. Vacuum heat treatment is one of the most popular and dominating technologies in heat treatment workshop.
3. Induction heat treatment and ion nitriding heat treatment technology:
Induction heat treatment is widely used in automobile industry, construction machinery, petrochemical industry and other industries because of its advantages of high efficiency, energy saving, cleanliness and flexibility. Nearly 40% of automobile parts can be treated by induction heat treatment, such as crankshaft, gear, universal joint, half shaft and so on. With induction heating, many products can be processed into automatic or semi-automatic production lines, which can improve the stability of product quality, reduce labor intensity and beautify the working environment.

4. Quenching medium and cooling technology:
The ideal quenching medium should have the following characteristics:
Quality: fast cold at high temperature stage and slow cold at low temperature stage. That is to eliminate the crack and reduce the quenching deformation.
Environmental protection type: no toxic, harmful smoke or gas volatilization, not easy to burn, easy to clean after quenching, no corrosion to equipment, and no irritation to burn skin.
Stable type: after quenching, the performance of the workpiece is uniform and stable, and the medium itself is stable in a certain period of time.
Economic type: high quality and good price, low energy consumption.
5.Adopt new surface strengthening technology and popularize heat treatment in nitrogen atmosphere：
The original tool surface treatment method is only limited to old methods such as steam treatment and oxygen nitriding. Generally, the tool life can only be increased by 30%~50%. However, the nitrogen based atmosphere is used to protect heat treatment and chemical heat treatment. It can achieve non oxidation and decarburization heat treatment, and can avoid the heat treatment of nitrogen embrittlement, chemical heat treatment of nitrogen based atmosphere, reduce internal oxidation and other defects, and improve the quality of chemical heat treatment.