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Heat treatment deformation control method of spiral bevel gear

A spiral bevel gear, heat treatment deformation technology, applied in the field of heat treatment, can solve problems such as uneven deformation, affect product quality, affect product size structure, etc., and achieve reasonable results in process technology

Active Publication Date: 2020-04-24
ZHONGNAN TRANSMISSION MACHINERY FACTORY CHANGSHAAVIATION IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since quenching deformation cannot be eliminated, it can only be controlled in a certain way. Therefore, pressure quenching is often used to restrain the quenching deformation of parts at present. However, if the control method is not adopted properly or the cooling oil circuit distribution is unreasonable, it will lead to uneven deformation and affect the entire system. The size structure of the product greatly affects the quality of the final product

Method used

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  • Heat treatment deformation control method of spiral bevel gear
  • Heat treatment deformation control method of spiral bevel gear

Examples

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Embodiment 1

[0028] Such as figure 1 As shown, a heat treatment deformation control method of a spiral bevel gear in this embodiment specifically includes the following steps:

[0029] (1) After carburizing the outer circle of the rod part and the tooth part of the spiral bevel gear part 8, the overall copper plating is carried out, and the thickness of the copper layer is 0.04mm;

[0030] (2) Preheating the spiral bevel gear part 8: Pack the spiral bevel gear part 8 together with a small amount of carburizing agent, place the box in a box furnace and heat it to 815°C for 130 minutes.

[0031] In this embodiment, the function of the carburizing agent is to prevent oxidative decarburization of the parts when they are heated. The carburizing agent can be spread on the bottom of the box in a flat layer with a thickness of about 10mm. The box is generally made of stainless steel, and the size can be designed according to the situation, without special requirements.

[0032] (3) Put the spira...

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Abstract

The invention discloses a heat treatment deformation control method of a spiral bevel gear. A quenching die is designed to reasonably distribute a cooling oil path, an expansion ring die is located above a central hole of a rod part and applies pressure to the top of the central hole of the rod part, and quenching deformation control of the outer circle of the rod part and a tooth part is realized.

Description

technical field [0001] The invention relates to the field of heat treatment, in particular to a heat treatment deformation control method of a spiral bevel gear. Background technique [0002] The structural stress of the parts due to rapid cooling during the quenching process will lead to quenching deformation of the parts, especially for parts with uneven thickness or large and thin webs, the quenching deformation is extremely difficult to control. Since quenching deformation cannot be eliminated, it can only be controlled in a certain way. Therefore, pressure quenching is often used to restrain the quenching deformation of parts at present. However, if the control method is not adopted properly or the cooling oil circuit distribution is unreasonable, it will lead to uneven deformation and affect the entire system. The size structure of the product greatly affects the quality of the final product. Aviation products involve a 9310 material carburizing and quenching spiral b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/32C21D1/673C21D1/70
CPCC21D9/32C21D1/673C21D1/70
Inventor 张志华吴平王广超刘龙凯吴仡璇刘丽婷
Owner ZHONGNAN TRANSMISSION MACHINERY FACTORY CHANGSHAAVIATION IND
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