Quenching method of wind power bearing gear ring

Abstract

The invention relates to a quenching method of a wind power bearing gear ring, which belongs to the field of heat treatment process. A profile induction heater carries out quenching heat treatment along a tooth groove of the gear ring, and the heating and the gear back cooling are synchronously carried out. The quenching method is characterized in that a tooth interval quenching method is adopted, teeth of the gear ring are divided into a plurality of groups according to the preset quenching intervals, the interval grouping quantity is S1+1, the work circulation times of the inductor are the same as the grouping number of the teeth on the gear ring, during the heating, both sides of the inductor are connected with cooling water pipes, the tooth surfaces of the teeth adjacent to the heated teeth are synchronously cooled, and the effective deformation control and the hardness control are realized. The quenching method has the advantages that the tooth interval quenching mode is adopted on the gear ring, front and back quenching tooth surfaces are not mutually influenced, and the primary quenched tooth surface is ensured not to be annealed, so the hardness is ensured; and during the thin-wall gear ring quenching, a multi-tooth interval quenching method can be adopted, and the deformation can be effectively prevented.

Description

technical field [0001] The invention belongs to the field of heat treatment technology, and mainly relates to a quenching method for a ring gear of a wind power bearing. Background technique [0002] Quenching of wind power bearing ring gear is prone to two major problems: deformation and cracks. Using the indexing method of traditional technology, it is easy to anneal the previous quenched tooth surface during quenching, which will reduce the hardness of the quenched tooth surface, resulting in unqualified hardness of the tooth surface of the entire ring gear. The surface fractured and a major accident occurred. In addition, the traditional tooth surface quenching process does not quench at intervals, which easily deforms the ring gear, prolongs the production cycle and even makes the product scrapped; using the traditional tooth surface quenching process, it is easy to cause uneven temperature on the tooth surfaces on both sides of the tooth groove, and the cooling cannot...

AI Technical Summary

Problems solved by technology

Using the indexing method of traditional technology, it is easy to anneal the previous quenched tooth surface during quenching, which will reduce the hardness of the quenched tooth surface, resulting in unqualified hardness of the tooth surface of the entire ring gear. Facial fracture, major accident

In addition, the traditional tooth surface quenching process does not quench at intervals, which easily deforms the ring gear, prolongs the production cycle and even makes the product scrapped; using the traditional tooth surface quenching process, it is easy to cause uneven temperature on the tooth surfaces on both sides of the tooth groove, and the cooling cannot be done at the same time. , causing cracks on the tooth surface and tooth root, and once the gear cracks, it is usually irreparable, causing the entire product to be scrapped due to this process

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