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A kind of powder metallurgy sprocket and preparation method thereof

A powder metallurgy and sprocket technology, which is applied in the field of powder metallurgy sprocket and its preparation, can solve problems such as difficult processing, high scrap rate, and easy cracks, and achieve the effects of ensuring vertical and horizontal uniformity, low cost, and small specific gravity

Active Publication Date: 2016-05-04
海门精工粉末冶金有限公司
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Problems solved by technology

However, due to the particularity of the manufacturing process of powder metallurgy products, there are generally many gaps in the matrix of powder metallurgy products during the production process, and cracks are prone to occur during quenching, especially at the tooth roots of gear products, so processing is difficult and the scrap rate higher

Method used

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Embodiment Construction

[0014] specific implementation plan

[0015] The present invention will be described in detail below through specific examples.

[0016] A powder metallurgy sprocket made of the following raw materials in parts by weight (kg): copper powder 0.4, nickel powder 11.3, graphite powder 1.3, Mg3.1, Mn2.6, iron powder 88, Zr0.3, Mo1.1 , Auxiliary 2;

[0017] 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-4111, 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 and mix evenly , 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...

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Abstract

The invention discloses a powder metallurgy chain wheel. The powder metallurgy chain wheel is characterized by being manufactured by, by weight, copper powder 0.4-0.6 part, nickel powder 11.3-11.6 parts, graphite powder 1.3-1.6 parts, Mg 3.1-3.4 parts, Mn 2.6-2.9 parts, iron powder 88-91 parts, Zr 0.3-0.6 part, Mo 1.1-1.4 parts and assistant 2-3 parts. The added assistant enables alloy powder to be dispersed evenly, ensures the longitudinal and transverse uniformity of an internal organizational structure of a product and enables the fatigue life of the product to be prolonged to some extent. The powder metallurgy chain wheel has the advantages of being small in specific gravity, good in abrasive resistance and corrosion resistance and good in integrality. In addition, the cost is low, a production process is simple, and the industrialized production is achieved.

Description

technical field [0001] The invention relates to the field of powder metallurgy, in particular to a powder metallurgy sprocket and a preparation method thereof. Background technique [0002] Powder metallurgy is an industrial technology for producing metal powder or using metal powder (or a mixture of metal powder and non-metal powder) as raw material, forming and sintering to produce metal materials, composite materials and various types of products. At present, powder metallurgy technology has been widely used in transportation, machinery, electronics, aerospace, weapons, biology, new energy, information and nuclear industries, and has become one of the most dynamic branches of new material science. Powder metallurgy technology has a series of advantages such as significant energy saving, material saving, excellent performance, high product precision and good stability, and is very suitable for mass production. In addition, some materials and complex parts that cannot be p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/16B22F5/08
Inventor 胡光荣
Owner 海门精工粉末冶金有限公司
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