Induction quenching device for large bearing race track surface

Abstract

The invention relates to an induction quenching device for a large bearing race track surface. The induction quenching device comprises two mounting seats, and an inductor is respectively fixed on each of back-to-back surfaces of the two mounting seats. The end parts of two straight arms of a U-shaped induction coil are fixedly connected with the two inductors respectively. Induction parts are fixedly arranged on the upper end faces of the two straight arms respectively, and arc surfaces are respectively arranged at the upper ends of the induction parts respectively. A U-shaped magnetizer is respectively fixed on each of the two straight arms of the induction coil, and each magnetizer is wrapped on an induction part of the corresponding straight arm. The mounting seats, the inductors, theinduction coil and the induction parts are made of metal materials. A support is fixed on one mounting seat, and a quenching agent jet pipe is fixed to the upper end of the support. A plurality of quenching agent jet holes are formed in the pipe wall at the upper end of the quenching agent jet pipe, and the opening end of the quenching agent jet pipe is fixedly connected with a quenching agent conveying pipe. Water cooling channels are formed in the induction coil and the two inductors, and the water cooling channels in the two inductors separately communicate with the water cooling channel inthe induction coil.

Description

technical field [0001] The invention relates to the field of heat treatment processing of large bearing races, in particular to an induction hardening device for the track surface of a large bearing race. Background technique [0002] Large bearings are widely used in modern industry. It includes a seat ring and an inner ring located in the inner hole of the seat ring. The inner hole wall of the seat ring is provided with an annular groove that cooperates with the rolling elements. The groove wall of the groove is the seat ring. track surface. Most of the grooves on the inner hole wall of the seat ring are arc-shaped grooves, and the track surface of the arc-shaped grooves can effectively fit the rolling elements, which improves the stability of the large bearing. Because the raceway surface will be affected by the friction of rolling elements for a long time during use, it is necessary to perform surface quenching on the raceway surface of the large bearing race to improve...

AI Technical Summary

Problems solved by technology

Because the track surface is arc-shaped, the current quenching device has uneven heating on the surface, especially at the bottom of the arc-shaped groove, it is difficult to reach the temperature required for heat treatment, so that the quenched hardened layer there Shallow, uneven hardness, reduced wear resistance

Therefore, in the long-term use process, the seat ring is severely worn, which greatly shortens the service life of large bearings

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