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Why do double gear pump gears undergo quenching process?

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The gear pump of Taixing Hengsheng Hydraulic Parts Complete Factory has a very good appeal in the world. Usually, the double gear pump gear is subjected to alternating and torsional loads such as torsion and bending during the work. Its surface layer Withstand higher stress than the heart. When the gear of the double gear pump is subject to friction, the surface layer is constantly worn, so the surface layer of some parts is required to have high strength, high hardness, high wear resistance and high fatigue limit. Only surface strengthening can meet the above requirements. Claim. Because surface hardening has the advantages of small deformation and high productivity, it is widely used in production.
Double gear pump gear quenching principle: Put the workpiece into the inductor (coil). When an alternating current with a certain frequency is passed in the inductor, an alternating magnetic field is generated around it. The electromagnetic induction of the alternating magnetic field causes a closed induced current in the workpiece-eddy current. The distribution of the induced current on the cross section of the workpiece is very uneven, and the current density on the surface of the workpiece is very high, which gradually decreases inward. This phenomenon is called skin effect. Taixing Hengsheng Hydraulic Fittings Factory converts the high-density current of the surface of the workpiece into heat, which increases the surface temperature, that is, the surface is heated. The higher the current frequency of the double gear pump, the larger the current density difference between the surface layer and the inside of the workpiece, and the thinner the heating layer. After the temperature of the heating layer exceeds the critical point temperature of the steel, the surface is quenched by rapid cooling.

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