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Heat treatment micro-deformation control method for wind power equipment gear main shaft

A technology of wind power equipment and control method, applied in heat treatment process control, heat treatment furnace, heat treatment equipment and other directions, can solve the problems of weakening the spline strength and affecting the transmission quality of the gear spindle, so as to improve the mechanical performance, prolong the service life, and ensure the transmission. quality effect

Active Publication Date: 2015-12-02
DALIAN CLEAN ENERGY HEAVY IND
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a heat treatment micro-deformation control method for the gear main shaft of wind power equipment that can avoid the weakening of the spline strength during the heat treatment process of the spline part of the gear main shaft and affect the transmission quality of the gear main shaft.

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  • Heat treatment micro-deformation control method for wind power equipment gear main shaft

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Embodiment Construction

[0023] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0024] refer to figure 1 , the present invention provides a heat treatment micro-deformation control method for a wind power equipment gear main shaft, comprising the following steps:

[0025] a. Preheat the gear spindle, heat the gear spindle to 800°-850° and keep it warm for 40min-90min, then raise the temperature to 900°-940° and keep it warm for 80min-120min; preferably, heat the gear spindle to 810° and keep it warm for 60min , then heat up to 920 ° and keep warm for 90min;

[0026] b. Carburizing treatment, carburizing treatment is carried out at 900°-940°, the concentration of carbon dioxide is controlled between 0.8%-1.2%, and the continuous carburizing time is 400min-500min; preferably, carburizing is carried out at 920° Treatment, control the carbon dioxide concentration at 1%, and the continuous carburizing time is 440min; then the gear ma...

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Abstract

The invention provides a method for controlling heat treatment microdeformation of a wind power equipment gear main shaft. The method comprises the following steps: preheating a gear shaft, carburizing, cooling down, quenching, cleaning the gear shaft, and tempering. Processing parameters of heating temperature, heat preservation time, carburizing concentration, cooling speed, quenching oil temperature, burner gas, pressure and the like in the entire process are controlled. Through the adoption of the method, the problems of over large carburizing quenching deformation, inconsistent carburizing depths, big stress gradient and the like in the heat treatment process are solved, and a uniform and fine metallographic structure is obtained, so that a spline with high strength and high precision is obtained; the mechanical property is improved, the transmission quality is guaranteed, and the service life is prolonged.

Description

technical field [0001] The invention relates to a heat treatment process, in particular to a heat treatment micro-deformation control method for a wind power equipment gear main shaft in wind power equipment. Background technique [0002] As the latest technology of global wind power, offshore wind power is the new technology most likely to reduce the cost of wind power generation in the future. This technology has become a hot spot that has attracted much attention around the world. For large-scale offshore wind power equipment, the lightweight and long life of wind turbines has become a difficulty in researching this technology. The main shaft of the yaw gear of the wind turbine is heavy, the internal structure is rough, the surface carburized layer is uneven, the heat treatment deformation is large, the hardness of the spline tooth surface is not enough, and the tooth surface modification accuracy is not high, which has become a prominent technical bottleneck. [0003] I...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C8/22C21D1/18C21D11/00C21D9/28
Inventor 王成伟张树河李世泽王盛松齐永健杜康
Owner DALIAN CLEAN ENERGY HEAVY IND
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