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Gear Hardening overall process

Hits:  UpdateTime:2016-02-19 13:14:32  【Printing】  【Close

Gear Hardening overall process induction heating furnace


     For the overall induction hardening steam tractors small modulus gear applications for a long time. However, with the bulk of the automotive industry, high quality requirements are high, for distribution and deformation hardening layer have become increasingly demanding, so far conventional quenching process suited to the overall requirements. For overall quenching gear, the addendum and the tooth root quench hardenability not been one of the limiting factors lit induction hardening applications. Many also prefer to use high-cost high-quality gear carburizing process reasons. induction heating furnace

One way to solve this problem is to use low-quenched steel, also called restriction hardenability of steel, but due to material limitations, is not popular in industrial applications. Another way is to seek dual hardening or change the power density of the impact of hardening, which is the power and the machine made a special request, therefore, only play a role in a specific range. Power is another reason for the overall quenching gear specifications subject to constraints. Conventional induction heating power supply for a single low power, to achieve greater power, requires the use of two-machine and dryer. This is a problem in the control and reliability. Currently single transistor digital supply electric power Watson has reached thousands of kilowatts. Thus, for the overall hardening modulus has reached more than one meter in diameter. There are already ø1200mm modulus 6mm diameter ring gear overall quenching applications. Worthy of note is that when electrical power to meet the overall heating requirements, ensure quenching capacity, high flow specially designed jet quenching system must be taken into account.
Most of the small gear directly after induction hardening, so after induction hardening deformation have higher requirements. In particular, some thin-walled parts, such as automobile synchronizer ring, the transmission ring and the like; or sectional asymmetrical parts, such as bevel gears, distortion factor is another factor affecting the quality of the process.

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