Carburizing method for wind power gear used for wind power generation

A technology for gears and wind power, which is applied in the carburizing field of wind power gears. It can solve the problems of poor uniformity, deepening of internal oxidation, and affecting the performance of wind power gears, etc., and achieve the effects of improving surface strength, improving affinity, and speeding up carburizing speed.

Active Publication Date: 2011-03-09
江苏丰东热技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Carburizing method for wind power gear used for wind power generation
  • Carburizing method for wind power gear used for wind power generation
  • Carburizing method for wind power gear used for wind power generation

Examples

Experimental program
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Effect test

Example Embodiment

[0032] The embodiment of the carburizing method for wind power gear for wind power generation provided by the present invention includes:

[0033] Carburize the wind power gear to be processed for the first time in an atmosphere with a carbon potential of 0.8% to 1.1%, and the first carburization time is 30 to 40 hours;

[0034] Performing the first quenching treatment on the wind power gear after the first carburizing treatment;

[0035] Heating the wind power gear after the first quenching treatment to 600°C to 660°C for the first tempering treatment;

[0036] Heating the wind power gear after the first tempering treatment for the second carburizing treatment in an atmosphere with a carbon potential of 0.8% to 1.0%, and the second carburizing treatment time is 1 hour to 4 hours;

[0037] Subjecting the wind power gear after the second carburizing treatment to a second quenching treatment;

[0038] The wind power gear after the second quenching treatment is subjected to a second temperi...

Example Embodiment

[0057] Example 1

[0058] The test piece is a cylinder with a diameter of 160mm×100mm in length. After machining, conventional heat treatment: first quenching at 880℃×2 hours, oil cooling; second quenching at 800℃, oil cooling; tempering 180℃×1 hour, air cooling .

[0059] The test piece after conventional heat treatment is pre-oxidized in a controlled atmosphere carburizing furnace at a temperature of 430°C, in an air atmosphere, and holding for 2.5 hours;

[0060] Carburize the pre-oxidized test piece for the first time, including:

[0061] a) Carburizing in an atmosphere with a carbon potential of 1.1% and a temperature of 920°C for 22 hours;

[0062] b) Keep the temperature constant, the carbon potential drops to 1%, and carburize for 5 hours;

[0063] c) Keep the temperature unchanged, the carbon potential drops to 0.8%, carburize for 8 hours;

[0064] After the first carburizing treatment, the carbon potential is maintained at 0.8%, the temperature is lowered to 850°C for 2 hours, ...

Example

[0070] Example 2-Example 5

[0071] The pre-oxidation conditions and carburizing conditions are mainly changed. Other conditions are the same as in Example 1. The carburizing process parameters are shown in Table 1:

[0072] Table 1 Example 2-Example 5 Carburizing Process Parameters

[0073]

[0074]

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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...

Claims

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Application Information

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IPC IPC(8): C23F17/00C23C8/22C21D9/32
Inventor 施剑峰
Owner 江苏丰东热技术有限公司
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