Carburizing method for wind power gear used for wind power generation

Abstract

The invention provides a carburizing method for a wind power gear used for wind power generation, which comprises the following steps: carrying out first carburizing treatment on the wind power gear to be treated under the atmosphere with carbon potential of 0.8%-1.1%, then carrying out first quenching treatment, further rising the temperature to 600 DEG C-660 DEG C, and carrying out first tempering treatment; then carrying out second carburizing treatment under the atmosphere with the carbon potential of 0.8%-1.0%, and carrying out second quenching treatment after the second carburizing treatment; and further carrying out second tempering treatment on the wind power gear at 150 DEG C-200 DEG C after the second quenching treatment. Compared with the prior art, the carburizing method is characterized by firstly carburizing the wind power gear for 30-40h under the atmosphere with the carbon potential of 0.8%-1.1%, and then uniformly dissolving and dispersing over-saturated carbon in martensite after the first high-temperature tempering so as to be conductive to the next step of the treatment; and further carburizing the wind power gear for 1-4h under the atmosphere with the carbon potential of 0.8%-1.0% after the first high-temperature tempering treatment, thereby further increasing the carbon concentration on the surface of the wind power gear and improving the surface strength during the second carburizing treatment.

Description

technical field [0001] The invention relates to the field of metal heat treatment, in particular to a carburizing method for wind power gears used in wind power generation. Background technique [0002] In the case of the depletion of traditional energy sources, wind energy, as a renewable, non-polluting, high-energy, and promising clean energy, has attracted more and more attention from all over the world, and using wind energy to generate electricity is an important way to utilize wind energy. At present, vigorously developing wind power generation technology has become a strategic choice for countries all over the world. [0003] The basic principle of wind power generation is to convert the kinetic energy of the wind into mechanical energy, and then convert the mechanical energy into electrical energy. The devices used for wind power generation are called wind turbines. Usually, wind turbines are installed in high mountains, wilderness, beaches, islands and other tuyer...

AI Technical Summary

Problems solved by technology

Compared with the sealed box furnace, the disadvantages of using the pit furnace for carburizing include that the uniformity of the carburizing atmosphere and the uniformity of the temperature field are poorer, and the most important disadvantage is that because the heating chamber of the pit furnace It is separate from the quenching oil tank and is not a whole. Therefore, during the transfer quenching process, the high-temperature wind power gear will be exposed to the air, which will easily generate an oxide layer on the surface of the wind power gear, which will greatly deepen the degree of internal oxidation, thus directly affecting The performance of wind turbine gear

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