High-performance powder metallurgy material and manufacturing method thereof

A powder metallurgy, high-performance technology, applied in the field of powder metallurgy manufacturing, can solve the problems of high price, poor shape, low strength of sintered steel, etc., to achieve the effect of improving performance

Inactive Publication Date: 2012-07-11
张云
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] In order to overcome the above defects, the technical problem to be solved in the present invention is: to overcome the disadvantages of sintered steel of conventional materials such a

Method used

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Embodiment Construction

[0017] The present invention will now be described in further detail in conjunction with the accompanying drawings and preferred embodiments. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0018] A high-performance powder metallurgy material is composed of iron powder, aluminum powder, ferrochrome, zinc stearate and graphite powder. Wherein the main components are iron powder and aluminum powder, and the percentage by weight between the iron powder and aluminum powder is 80-70% of iron powder and 20-30% of aluminum powder. Adding Al to the main component improves the performance of the powder metallurgy material, and its indoor bending strength can reach 2500MPa, and the relative density is greater than 99.9%.

[0019] The powder metallurgy material also includes 0.5-2% by weight of ferrochrome, 0.08-0.5% of ...

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Abstract

The invention relates to a high-performance powder metallurgy material, wherein components of the powder metallurgy material are iron powder, aluminum powder, chromium iron, zinc stearate and graphite powder; a manufacturing method of the high-performance powder metallurgy material comprises the steps of ball-grinding the chromium iron till the particle diameter is 0.3-1 microns; uniformly mixing with other powders according to the proportion; performing ball-grinding in a high-performance ball grinder for 5-15 min, wherein the ball-grinding medium is anhydrous organic liquid; in the invention, Al is added in the main component, so that the performance of the powder metallurgy material is improved; the indoor bending strength is 2500 MPa and the relative density is more than 99.9%; high pressing density can be obtained after cold-pressing (pre-pressing) is maintained for a certain time; the prepared sintered steel has a uniform texture, high strength and plasticity, excellent performances and low cost.

Description

technical field [0001] The invention relates to the field of powder metallurgy manufacturing, in particular to a high-performance powder metallurgy material and a manufacturing method thereof. Background technique [0002] In recent years, the powder metallurgy industry has developed rapidly. The demand for iron powder, especially alloy iron powder, continues to increase with the development of the automobile industry, and people have higher and higher performance requirements for iron-based sintered structural parts. Therefore, the development of high-density, high-strength, high-plasticity powder metallurgy structural steel and broadening the application field of powder metallurgy steel are the current research and development directions of powder metallurgy. [0003] Iron-based sintered structural steel is a type of product with the largest output and the widest application in the powder metallurgy industry. The performance is equivalent to ordinary cast iron, the tensi...

Claims

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Application Information

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IPC IPC(8): C22C38/18C22C33/02B22F9/04B22F1/00
Inventor 张云
Owner 张云
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