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Manufacture method of special gear plate

A gear disc, a special technology, applied in the field of preparation of special gear discs, can solve the problems of low production efficiency, increase of raw materials and production costs, etc., and achieve the effects of high production efficiency, easy production operation and high product precision

Inactive Publication Date: 2011-05-18
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 manufacturing method of powder metallurgy gear disc is generally completed through forming, sintering, heat treatment, pressing and other processes, but when the inner diameter of the small hole of the upper flange is smaller than the outer diameter of the lower gear tooth, that is, ΦBfigure 1 As shown, the normal process can no longer meet the production requirements. In many cases, it is necessary to thicken the flange and make the through hole into a blind hole. After subsequent machining, this not only increases the cost of raw materials and production, but also reduces the production efficiency. very low

Method used

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  • Manufacture method of special gear plate

Examples

Experimental program
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Effect test

Embodiment 1

[0015] The invention discloses a preparation method of a special gear disc, which is manufactured by separate press-fitting.

[0016] (1) The gear and the flange are prepared according to the following parts by weight of powder metallurgy raw materials: Fe: 86.0 parts, C: 1.0 parts, Ni: 7.0 parts, Mo: 1.0 parts, Cu: 5.0 parts;

[0017] (2) Forming (60-ton forming machine), sintering (1120°C, 0.5h) and carburizing (830°C, 2h, Cp:0.8) were performed in sequence; the prepared flange structure is as follows: figure 2 As shown, the gear structure is as image 3 shown.

[0018] (3) Use an ordinary 1 ton press to press and fit the gear and the flange into a whole. Such as Figure 4 Shown is the final molded product.

[0019] To test the product, the main testing parameters are shown in the table below:

[0020]

Embodiment 2

[0022] The invention discloses a preparation method of a special gear disc, which is manufactured by separate press-fitting.

[0023] (1) The gears and flanges are compounded according to the following powder metallurgy raw materials in parts by weight: Fe: 98.0 parts, Ni: 1.0 parts, Cu: 1.0 parts;

[0024] (2) Carry out forming, sintering and carburizing operations in sequence;

[0025] (3) Press fit the gear and the flange into a whole.

[0026] To test the product, the main testing parameters are shown in the table below:

[0027]

Embodiment 3

[0029] The invention discloses a preparation method of a special gear disc, which is manufactured by separate press-fitting.

[0030] (1) The gear and the flange are prepared according to the following parts by weight of powder metallurgy raw materials: Fe: 90.0 parts, C: 0.5 parts, Ni: 6.0 parts, Mo: 0.5 parts, Cu: 3.0 parts;

[0031] (2) Carry out forming, sintering and carburizing operations in sequence;

[0032] (3) Press fit the gear and the flange into a whole.

[0033] To test the product, the main testing parameters are shown in the table below:

[0034]

[0035] The preparation method of the special gear plate of the present invention is easy to produce and operate, is beneficial to cost saving, and has high production efficiency. It can produce 3500PCS products every 8 hours, and has low production cost and high product precision. It has good economic prospects and can produce good social benefits.

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Abstract

The invention discloses a manufacture method of a special gear plate, which comprises the steps: dividing the special gear plate into a gear and a flange plate, sintering and carburizing the gear and the flange plate, and integrally pressing and fitting the gear and the flange plate. The manufacture method of the special gear plate is easy to manufacture and operate, is good for saving the cost, and is high in the manufacture efficiency, i.e. the products of 3500PCS can be manufactured every 8 hours. Furthermore, the manufacture method is low in manufacture cost, high in product precision, good in economic prospect, and good in social benefit.

Description

technical field [0001] The invention relates to a preparation method of a gear disc, in particular to a preparation method of a special gear disc. Background technique [0002] The manufacturing method of powder metallurgy gear disc is generally completed through forming, sintering, heat treatment, pressing and other processes, but when the inner diameter of the small hole of the upper flange is smaller than the outer diameter of the lower gear tooth, that is, ΦB<ΦA, as shown in the attached figure 1 As shown, the normal process can no longer meet the production requirements. In many cases, it is necessary to thicken the flange and make the through hole into a blind hole. After subsequent machining, this not only increases the cost of raw materials and production, but also reduces the production efficiency. very low. Contents of the invention [0003] Purpose of the invention: Aiming at the deficiencies in the prior art, the purpose of the invention is to provide a met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F5/08B22F3/24
Inventor 崔永涛胡云峰官劲松徐同刘文雄
Owner 扬州保来得科技实业有限公司
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