Powder metallurgy alloy gear and manufacturing method thereof

A powder metallurgy and alloy technology, applied in the field of powder metallurgy alloy gear and its preparation, can solve the problems of alloy composition segregation, unable to meet the requirements of light weight, heavy gear weight, etc., achieve excellent tensile strength performance, and ensure vertical and horizontal uniformity. , the effect of improving fatigue life

Inactive Publication Date: 2014-01-29
WUHU HONGKUN AUTO PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Gears are important components in mechanical transmission systems. They have the advantages of high transmission efficiency, compact structure, stable transmission ratio, and reliable operation, making them widely used. They have always been important basic parts of the machinery industry. Some problems often occur, including tooth wear, tooth shape deformation, and tooth fracture, especially for cast gears. Due to the large grain size of cast alloys and segregation of alloy components, the gears produced by such alloys have poor performance and are unstable. , can not meet the requirements of performance in a specific environment, and the gears made of conventional materials are heavy and cannot meet the requirements of light weight

Method used

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Embodiment Construction

[0016] specific implementation plan

[0017] The present invention will be described in detail below through specific examples.

[0018] A powder metallurgy alloy gear made of the following raw materials in parts by weight (kg): magnesium 5.2, copper 2.2, iron powder 74, Ti 5.1, Co 3.1, As 0.3, In 0.2, additive 2;

[0019] The auxiliary agent is made of the following raw materials in parts by weight (kg): iron powder 30, kaolin 2, alum 1, nano-carbon 1, polyisobutylene 2, aluminate coupling agent DL-411 1, sodium tripolyphosphate 2. Ricinoleic acid 1, aluminum nitride powder 2; the preparation method is to mix iron powder, kaolin, alum, and sodium tripolyphosphate, grind it into 200-300 mesh powder, and then add aluminate coupling agent DL-411 to mix Uniform, pressed into a blank at 10-15Mpa, then sent to 920-950°C for calcination for 3-4 hours, after cooling, crushed into 300-400 mesh powder, mixed with other remaining ingredients, heated to 60-70°C, Stir at 1200-1500 rev / m...

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PUM

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Abstract

The invention discloses a powder metallurgy alloy gear. The powder metallurgy alloy gear is characterized by being manufactured from, by weight, 5.2-5.5 parts of Mg, 2.2-2.4 parts of copper, 74-75 parts of iron powder, 5.1-5.3 parts of Ti, 3.1-3.5 parts of Co, 0.3-0.5 part of As, 0.2-0.3 part of In and 2-3 parts of auxiliaries. Due to the fact that the auxiliaries are added, alloy powder is scattered evenly, the longitudinal and transverse evenness of the internal organizational structure of the product is guaranteed, and the fatigue life of the product is prolonged. The powder metallurgy alloy gear is good in microstructure, very few in pore, and excellent in structural rigidity, hardness, fatigue resistance and tensile strength performance, simple in process and easy to obtain, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the field of powder metallurgy, in particular to a powder metallurgy alloy gear and a preparation method thereof. Background technique [0002] Gears are important components in mechanical transmission systems. They have the advantages of high transmission efficiency, compact structure, stable transmission ratio, and reliable operation, making them widely used. They have always been an important basic part of the machinery industry. However, in the application process of gears, Some problems often occur, including tooth wear, tooth shape deformation, and tooth fracture, especially for cast gears. Due to the large grain size of cast alloys and segregation of alloy components, the gears produced by such alloys have poor performance and are unstable. , can not meet the requirements of performance in a specific environment, and the gears made of conventional materials are heavy and cannot meet the requirements of light weight. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/16B22F5/08
Inventor 黄浩
Owner WUHU HONGKUN AUTO PARTS
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