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Treatment process of generator rotor

A generator rotor and treatment process technology, applied in heat treatment furnaces, heat treatment equipment, manufacturing tools, etc., can solve problems such as poor mechanical properties, and achieve the effects of improving fracture toughness, good comprehensive mechanical properties, and good toughness

Inactive Publication Date: 2016-11-09
WUXI NEW GREAT POWER ELECTRICAL MACHINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the popularization of new energy vehicles, the demand for large generator rotors is getting higher and higher. However, compared with the surface part of the existing large generator rotor shaft center, the shaft center has poor performance in terms of steel ingot quality, forging and heat treatment, and mechanical properties. Poor, various defects are easy to concentrate here, and a better treatment process is urgently needed to improve its performance

Method used

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Embodiment Construction

[0009] The technical solution of the present invention will be described in detail below.

[0010] A generator rotor treatment process, comprising the steps of:

[0011] Use intermediate critical quenching temperature 600 ~ 710 ℃ to heat treat the shaft center of the motor rotor;

[0012] When quenching and cooling, use water cooling for 30 minutes, air cooling for 25 minutes, and then water cooling for 20 minutes, so that the heat of the shaft center of the motor rotor is diffused to the outer layer. In this way, the temperature difference of the cross section of the forging can be reduced, the cooling is uniform, the structure distribution is reasonable, the grain is refined, the quenching stress is reduced, and the occurrence of temper brittleness is suppressed.

[0013] Tempering treatment is carried out at a tempering temperature of 610-630 °C to improve mechanical properties.

[0014] The generator rotor treatment process disclosed in the embodiments of the present inv...

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Abstract

The invention discloses a treatment process of a generator rotor. The treatment process comprises the following steps that an intermediate critical quenching temperature of 600-710 DEG C is used for conducting heat treatment on the axis part of the generator rotor; during quenching and cooling, water cooling is conducted for 30 min, air cooling is conducted for 25 min, and then water cooling is conducted for 20 min again, so that the heat of the axis part of the generator rotor is made to diffuse towards outer layers; and a tempering temperature of 610-630 DEG C is used for conducting tempering treatment. According to the treatment process of the generator rotor, the generator rotor has good comprehensive mechanical property, toughness, hardness and abrasion resistance, low notch sensitivity, low brittle transition temperature and the like after being treated. It is guaranteed that stress and fractures caused by uneven structures and poor performance during the high-speed rotation of the generator rotor are avoided, and meanwhile the crack toughness is further improved. The treatment process can be widely applied to the field of new energy automobiles in the future.

Description

technical field [0001] The invention relates to the technical field of new energy automobile manufacturing, in particular to a generator rotor treatment process. Background technique [0002] With the popularization of new energy vehicles, the demand for large generator rotors is getting higher and higher. However, compared with the surface part of the existing large generator rotor shaft center, the shaft center has poor performance in terms of steel ingot quality, forging and heat treatment, and mechanical properties. Poor, various defects are easy to concentrate here, and a better treatment process is urgently needed to improve its performance. Contents of the invention [0003] In order to solve the above-mentioned problems existing in the prior art and actual conditions, the present invention provides a generator rotor treatment process, which is characterized in that it includes the following steps: [0004] Use intermediate critical quenching temperature 600 ~ 710 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/18C21D9/00
CPCC21D1/18C21D9/0068
Inventor 徐明
Owner WUXI NEW GREAT POWER ELECTRICAL MACHINE
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