PRODUCT CATEGORIES

Vacuum Heat Treatment Furnace

Vacuum Sintering Furnace

Vacuum Brazing Furnace

Application of Vacuum Furnace Technology in Automobile Gears

In order to further improve the quality of automobile gears, various vacuum heat treatment processes are used to carry out vacuum heat treatment on gear forging billets, which is beneficial to reduce the probability of irregular deformation of automobile gear forging billets during vacuum carburizing and quenching. In order to obtain the influence of vacuum heat treatment process on the properties of forged automotive gear blanks, the performance of automotive gears was verified by isothermal annealing process and conventional annealing process. The results show that the isothermal annealing process is more suitable for the production and manufacture of automobile gears, which can significantly improve the wear resistance of automobile gears, and is beneficial to improve the overall quality of automobile gears.

Automobile gears are the key parts of automobiles. If there are quality problems in automobile gears, the safety of automobiles may be threatened. At present, the production of automotive gears with high precision, low noise and long service life has become the development direction of the automotive manufacturing field. However, most gears have low production efficiency and high energy consumption. How to improve the quality of automotive gears has become an urgent problem to be solved. In order to further improve the performance of automotive gears, the gears are subjected to vacuum heat treatment through a number of vacuum heat treatment processes, so as to realize the optimization of automotive gears and improve the safety of automobiles.

Overview of Vacuum Heat Treatment Process for Automotive Gears

The raw material for manufacturing automotive gears is low-carbon alloy vacuum carburizing steel, and its manufacturing process mainly includes 5 steps:

(1) Complete the production of gear blanks by forging technology;

(2) The gear blank is pretreated by pre-vacuum heat treatment process;

(3) Carry out cutting processing on the pretreated gear blank, so that the gear blank conforms to the preset shape;

(4) Implement the vacuum carburizing and quenching process, and obtain the high-carbon surface layer of the automobile gear by this method;

(5) Finishing the gear blank by using the cold and hot working process, and this step can be repeated many times.

The automotive gears formed through the manufacturing process have the advantages of good wear resistance, fatigue resistance, and corrosion resistance. The automotive gears have high surface hardness and good core toughness, and can be widely used in the field of automobile manufacturing.

Pre-vacuum heat treatment process: This process is the core step of the automotive gear manufacturing process. Through pre-vacuum heat treatment of the automotive gear blank, the surface of the automotive gear blank can show a higher hardness, paving the way for the second vacuum heat treatment of the gear blank . The core method of the traditional pre-vacuum heat treatment process is normalizing treatment. This method has low requirements for equipment and can complete the production of automotive gears without any large-scale processing equipment. When the normalizing method is used to produce automotive gears, this method consumes less energy and has relatively simple requirements for the process, so it is widely used in production. However, this method can cause the problems of low blank strength and deformation of the automobile gear, and the use of the gear in automobile production is not conducive to maintaining the stable operation of the automobile.

Vacuum carburizing process: This process mainly improves the comprehensive mechanical properties of automotive gears through vacuum carburizing, and is widely used in the production of automotive gears. Most automobile manufacturers adopt the vacuum carburizing process for gear production. The vacuum carburizing process is actually a relatively common surface hardening treatment process. The introduction of this process into the production of low carbon steel can improve the performance of low carbon steel. reach a higher level. In order to produce the best vacuum carburizing layer depth, most automobile manufacturers introduce computer control systems into automobile production equipment, and control the production process of automobiles through the computer. The main content of the system control is the depth of vacuum carburizing and The surface hardness, supported by the computer control system, is conducive to reducing the probability of deformation of automobile gears.

Carbonitriding process: In order to ensure that the automobile gear has a good penetration depth and hardness, this study uses the carbonitriding process to treat the automobile gear. The carbonitriding process can increase the depth and hardness of the penetration layer of automobile gears within a certain period of time. At the same time, this process can minimize the probability of deformation of automobile parts and improve the strength and wear resistance of automobile gears. The carbonitriding process is an advanced technology formed after many experiments and researches. It was first applied in the production of gears for tanks, then extended to the production of gears for civilian vehicles, and finally popularized in the production of automotive gears across the country.

Vacuum nitriding process: This process is one of the traditional vacuum heat treatment processes. Using this process for the production of automotive gears can make the load-carrying capacity of automotive gears unable to achieve the expected effect, which is not conducive to the promotion of nitriding process. However, the vacuum nitriding process has lower temperature requirements. When this process is used to complete the production of automotive gears, it can reduce the degree of distortion of the forging billet and reduce the processing procedures. Applying this technology to the production of automobile gears will help reduce the unit production cost.

Induction hardening: Most automobile manufacturers use induction hardening to complete production in the initial stage of automobile gear manufacturing. This process has high production efficiency and can effectively reduce the deformation probability of workpieces; it also has low energy consumption and is easy to realize automation. And other advantages, are widely used in the field of automobile production.