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45#Gear surface quenching

45#Gear surface quenching

Question: What is the surface quenching temperature with high frequency? When quenching, the redness of the entire tooth stops, or the root of the tooth is not red.

Is quenching and tempering or tempering still used after the surface is quenched?

In the induction heating quenching, the high-frequency induction heating frequency is between 100-1000kHz, and the hardened layer is between 0.2-2mm. After surface quenching, low temperature tempering is required.

The entire tooth surface can be quenched, and the tooth root is not in contact during operation. After quenching, it must be tempered, and quenching and tempering is a pretreatment process, which should be performed before high-frequency quenching and after rough turning. Conventionally, the gear heat treatment process uses quenching and tempering + surface quenching, while the low-requirement only uses quenching and tempering, and the worst is the soft tooth surface that does nothing; generally there is no saying that only surface quenching is not quenched and tempered unless The matrix already has a certain degree of hardness.

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