Powder metallurgy production technological method

A production process and powder metallurgy technology, applied in the field of powder metallurgy production process, can solve the problems of easily causing cracks, slow cooling efficiency, affecting the quality of parts, etc., and achieve the effects of improving product quality, improving quality, and eliminating stress.

Inactive Publication Date: 2016-12-07
ANHUI AOTAI POWDER METALLURGY
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  • Claims
  • Application Information

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Problems solved by technology

In addition, some materials and complex parts that cannot be prepared by traditional casting methods and mechanical processing methods can also be manufactured by powder metallurgy technology, so they have attracted the attention of the industry. The traditional powder metallurgy technology usually uses air cooling and Water cooling, slow cooling efficiency, easy to cause cracks, and residual stress in the blank parts after cooling, direct processing is easy to affect the quality of parts, and the traditional powder metallurgy process has defects

Method used

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  • Powder metallurgy production technological method

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Effect test

Embodiment 1

[0017] A powder metallurgy production process, the powder metallurgy production process comprises the following steps:

[0018] The first step: mixing and stirring, mixing the raw metal powder according to the ratio, filtering the mixed metal powder with a filter, and then adding the filtered metal powder to the stirring device to stir evenly;

[0019] The second step: press molding, pour the evenly stirred metal powder directly into the compact mold, and press the press to make the shape of the blank of the part, and the pressure of the press is 160Mpa;

[0020] The third step: high-temperature sintering, the part blank is sent to the heating furnace through the mesh belt conveyor for sintering to form a dense semi-finished product, the sintering time is 2 hours, and the heating temperature is 1200°C.

[0021] The fourth step: oil immersion cooling, the sintered semi-finished product is immersed in oil for cooling, the cooled oil temperature is 18°C, and then the cooled semi-...

Embodiment 2

[0027] A powder metallurgy production process, the powder metallurgy production process comprises the following steps:

[0028] The first step: mixing and stirring, mixing the raw metal powder according to the ratio, filtering the mixed metal powder with a filter, and then adding the filtered metal powder to the stirring device to stir evenly;

[0029] The second step: press molding, pour the evenly stirred metal powder directly into the compact mold, and press the press to make the shape of the blank of the part. The pressure of the press is 220Mpa;

[0030] The third step: high-temperature sintering, the part blank is sent to the heating furnace through the mesh belt conveyor for sintering to form a dense semi-finished product, the sintering time is 2.5 hours, and the heating temperature is 1250°C.

[0031] The fourth step: oil immersion cooling, the sintered semi-finished product is immersed in oil for cooling, the cooled oil temperature is 22°C, and then the cooled semi-fi...

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Abstract

The invention discloses a powder metallurgy production technological method which comprises the following steps: mixing and stirring, forming by compressing, sintering at high temperature, cooling through immersing in oil, carrying out shaping processing, deburring treatment and rust-proof treatment, putting in storage and storing. According to the powder metallurgy production technological method, metal powder with uniform particles is used as the raw material, and a manufactured product is excellent in structural compactness; the cooling technology through immersing in oil is excellent in cooling effect, so that a part is prevented from generating a crack, and the product quality is improved; and in addition, elimination of residual stress in the part is facilitated after the product is cooled through immersing in oil and placed after a period of time, so that the product quality is improved.

Description

technical field [0001] The invention relates to the technical field of powder metallurgy technology, in particular to a powder metallurgy production process method. 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 significant energy saving, It has a series of advantages such as 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/02B22F3/10B22F3/24B22F3/26
CPCB22F3/02B22F3/10B22F3/24B22F3/26B22F2003/247B22F2998/10
Inventor 陈田非
Owner ANHUI AOTAI POWDER METALLURGY
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