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Powder metallurgy production method of alligatoring rings of automobile gearbox

An automobile gearbox and powder metallurgy technology, which is applied in the field of powder metallurgy production of automobile gearbox gear rings, can solve the problems of high cost, poor tooth profile accuracy, low production efficiency, etc., to ensure tooth profile accuracy, reduce production costs, The effect of improving production efficiency

Inactive Publication Date: 2009-09-09
扬州保来得科技实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional production method of automotive gearbox gear rings is generally produced by machining, which has low production efficiency, poor tooth profile accuracy, and high cost. Especially for the automobile production industry, due to the requirements of mass production, machining and cutting technology cannot meet the large quantities of automobile assembly , low cost, high precision requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 86gFe, 1gC, 7gNi, 1gMo and 5gCu are mixed and preheated to 80°C, and then the preheated metal powder raw material is put into the mold of the powder extrusion molding machine for warm pressing to form a green compact. The blank is a circular ring with an assembly guide straight section on the end face and a tapered tooth on the outer diameter; next, the above-mentioned formed green body is sintered in a high-temperature mesh belt furnace, and after a 5-minute preheating stage, the formed green body is The high-temperature mesh belt furnace is gradually heated up to 1100°C, kept at 1100°C for 30 minutes, and finally cooled down to room temperature under a protective atmosphere; the CO in the sintering atmosphere 2 The content is controlled at 0.3-0.5%, and the temperature range in the preheating stage is 500-750°C. After sintering, the straight section of the assembly guide on the end face of the part is cut off.

[0016] The key technical indicators of the product in t...

Embodiment 2

[0019] 89gFe, 0.75gC, 5.5gNi, 0.75gMo and 4gCu are mixed and preheated to 100°C, and then the preheated metal powder raw material is put into the mold of the powder extrusion molding machine for warm pressing to form a shaped green body. The shaped green body is a circular ring with an assembly guide straight section on the end face and a tapered tooth on the outer diameter; next, the above shaped green body is sintered in a high-temperature mesh belt furnace, and the shaped green body is preheated for 6 minutes After the stage, the high-temperature mesh belt furnace was gradually heated up to 1113°C, kept at 1113°C for 38 minutes, and finally cooled to room temperature gradually under a protective atmosphere; the CO in the sintering atmosphere 2 The content is controlled at 0.3-0.5%, and the temperature range in the preheating stage is 500-750°C. After sintering, the straight section of the assembly guide on the end face of the part is cut off.

[0020] The key technical ind...

Embodiment 3

[0023] 92g Fe, 0.5gC, 4gNi, 0.5g Mo and 3gCu are mixed and preheated to 120°C, and then the preheated metal powder raw material is put into the mold of the powder extrusion molding machine for warm pressing to form a shaped green body. The shaped green body is a circular ring with an assembly guide straight section on the end face and a tapered tooth on the outer diameter; next, the above shaped green body is sintered in a high-temperature mesh belt furnace, and the shaped green body is preheated for 7 minutes After the stage, the high-temperature mesh belt furnace is gradually heated up to 1120°C, kept at 1120°C for 45 minutes, and finally cooled down to room temperature under a protective atmosphere; the CO in the sintering atmosphere 2 The content is controlled at 0.3-0.5%, and the temperature range in the preheating stage is 500-750°C. After sintering, the straight section of the assembly guide on the end face of the part is cut off.

[0024] The key technical indicators ...

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PUM

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Abstract

The invention discloses a powder metallurgy production method of alligatoring rings of an automobile gearbox, which comprises the following steps that: (1) proportioning: metal power stocks are prepared according to a certain proportion; (2) warm compaction forming: after being preheated, the prepared metal powder stocks are thrown into a mould of a powder extrusion moulding machine for warm compaction forming so as to form shaped green pressing; and (3) sintering: the shaped green pressing is arranged into a high-temperature mesh belt furnace for sintering. By the powder metallurgy production method for producing alligatoring rings of an automobile gearbox, the production efficiency can be improved, the profile precision can be guaranteed, and the production cost can be reduced.

Description

technical field [0001] The invention relates to a powder metallurgy production method for a gear ring of an automobile gearbox. Background technique [0002] The traditional production method of automotive gearbox gear rings is generally produced by machining, which has low production efficiency, poor tooth profile accuracy, and high cost. Especially for the automotive production industry, due to the requirements of mass production, machining and cutting technology cannot meet the large quantities of automobile assembly , low cost, high precision requirements. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a powder metallurgy production method for the gear ring of the automobile gearbox. With the help of the powder metallurgy production method, the production efficiency can be improved, the tooth shape precision can be ensured, and the production cost can be reduced. [0004] The invention comprises the followi...

Claims

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Application Information

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IPC IPC(8): B22F3/16
Inventor 朱嵩官劲松胡云峰张学群
Owner 扬州保来得科技实业有限公司
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