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Precautions for quenching of high frequency heating machine

Precautions for quenching of high frequency heating machine

1. Cooling method

The cooling method of high-frequency heating machine quenching is determined by comprehensive consideration of the following factors: according to the steel, the method of induction heating, the shape and size of the parts, etc. Commonly used cooling methods are: spraying and immersion.

Jet cooling: parts made of alloy steel;

Immersion cooling: parts made of low alloy steel and carbon steel.

2. Frequency

The frequency of the high-frequency hardening machine required for different heating processes is also different, but if the frequency we choose is not enough to meet the heating requirements, such as: uneven heating, slow heating time, low work efficiency, and the temperature fails to meet the requirements, then It is easy to cause damage to the workpiece.

3. Heating temperature

The suitable heating temperature of the induction hardening machine is related to the heating speed, chemical composition and original structure state of the steel.

Fourth, the technical requirements of the parts

The technical requirements of surface hardened parts include: hardened zone distribution, quenched layer structure, quenched layer depth, surface hardness, etc.

5. Heating method and process operation

1. Simultaneous heating method

At the same time, the advantages of heating method: when mass production of products, in order to improve production efficiency, this method can be used. Reason: The heated surface heats up at the same time, and the entire part of the part that needs to be heated is surrounded by the inductor.

2. Continuous heating method

This is beneficial to expand the application range of the high-frequency hardening machine, the continuous heating productivity is low, but the heating area is reduced, and the power of the high-frequency heating machine is allowed to be reduced (cooling and heating are continuous).