What is the axial heat treatment?
Industrial induction heat treatment generally refers to the so-called axial shaft surface quenching locally, material is 45 steel or 40 cr, quenching hardness can be set according to material diameter size induced current and heating time.
Quenching hardness layer depth, depending on the frequency of induction equipment and heating time, the higher the frequency or the shorter the heating time, the lower the hardness layer depth.
In the actual production process, often to the center axis of the department have hardness requirement, generally need to professional manufacturers of heat treatment, heat treatment so that it has brought the processing cycle is long, the cost is higher.
If the center of the shaft with induction quenching parts meet the hardness requirement, it requires that the depth of the induction heating equipment
must be up to the axle center, and temperatures will reach to the center above the critical temperature.
Now is 20 mm in diameter of motor rotor as an example, the motor rotor end center has a HuaChang slot, HuaChang slot role is responsible for the transfer of motor output power, if there is no hardness or not meet the requirements of the hardness: 37 HRC ~ 45 HRC, assembly good product soon because HuaChang tank failure and lost power, therefore HuaChang slot hardness directly affect the product quality.
Induced current, short heating time, high and low hardness of high surface hardness and the core shaft;
Induced current is low, the heating time is long, shaft and hardness of surface and is on the high side.
If you want to make the rotor axis quenching hardness of specified requirements, must be to make induction tempering on the quenching process.
Tempering is reheated after quenching to critical after the tempering temperature, heat preservation time, and then take out the heat treatment process of cooling to room temperature.
Tempering methods: low temperature tempering,
Tempering temperature is 150 ~ 250 ℃)
, medium temperature tempering (
Tempering temperature is 350 ~ 500 ℃)
And high temperature tempering (
Tempering temperature is 500 ~ 680 ℃)
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Has a strong r&d team, rich experience, according to the workpiece and process customized automatic induction heating equipment, free of charge to provide customers with personalized technology solutions.
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