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

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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