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Powder metallurgy automobile trunk transmission gear and manufacturing method thereof

A transmission gear and powder metallurgy technology, applied in the field of powder metallurgy, can solve the problems of large size of the transmission gear of the rear box of the automobile, incapable of mass production, low production efficiency, etc., to ensure vertical and horizontal uniformity, long service life, and performance indicators. high effect

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

The transmission gear of the car back box has a large size and high tooth shape precision, and the appearance has special requirements. It cannot be produced by traditional machining methods. Although it can be produced by machining center or electric machining, the production efficiency is too high. Low, large differences between parts, low pass rate, high production cost and cannot be mass-produced
Using powder forging method, the shape of the parts can be made, but the accuracy of the tooth shape is relatively poor, and the production cost is high

Method used

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Examples

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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 automobile trunk transmission gear, made of the following raw materials in parts by weight (kg): copper powder 3.1, iron powder 81, nickel 4.1, molybdenum 2.1, manganese 6.1, W 1.2, Hf 0.3, B 0.4, La 1.3 , Dy 0.2, Ho 0.1, additive 2;

[0017] The additives are made of the following raw materials in parts by weight (kg): iron powder 30, aluminum sulfate 3, potassium tripolyphosphate 1, lapis lazuli powder 2, straw ash 1, silane coupling agent KH550 1, dimethyl Silicone oil 3, isopropyl distearoyloxyaluminate 1, zinc oxide 2; the preparation method is to mix iron powder, aluminum sulfate, potassium tripolyphosphate, lapis lazuli powder, and straw ash, and grind it into 200-300 mesh Powder, then add silane coupling agent KH550 and mix evenly, press it into a billet at 10-15Mpa, then send it to 920-950°C for calcination for ...

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Abstract

The invention discloses a powder metallurgy automobile trunk transmission gear. The powder metallurgy automobile trunk transmission gear is characterized by being manufactured from, by weight, 3.1-3.4 parts of copper powder, 81-82 parts of iron powder, 4.1-4.5 parts of nickel, 2.1-2.2 parts of molybdenum, 6.1-6.6 parts of manganese, 1.2-1.4 parts of W, 0.3-0.5 part of Hf, 0.4-0.8 part of B, 1.3-1.5 parts of La, 0.2-0.3 part of Dy, 0.1-0.2 part of Ho and 2-3 parts of auxiliaries. According to the powder metallurgy automobile trunk transmission gear, the auxiliaries are added, and therefore the alloy powder is scattered evenly, the longitudinal and transverse evenness of the internal structural organization of the product is guaranteed, and the fatigue life of the product is prolonged. The powder metallurgy automobile trunk transmission gear has the advantages that the special raw material ratio is adopted, the produced gear is high in performance index, good in glossiness and stability, not prone to fracture and the like, long in service life and wide in application range.

Description

technical field [0001] The invention relates to the field of powder metallurgy, in particular to a powder metallurgy automobile trunk transmission gear 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 comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F3/16B22F5/08C22C38/16
Inventor 黄浩
Owner WUHU HONGKUN AUTO PARTS
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