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Compression-resistance powder metallurgical gear material and preparation method thereof

A gear material and powder metallurgy technology, applied in the field of powder metallurgy, can solve problems such as low compressive strength, achieve high compressive strength, improve compressive strength, and enhance performance.

Inactive Publication Date: 2015-02-04
刘阳 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Technical problem to be solved: Powder-infused materials are widely used in gear manufacturing, and the compressive strength of the prepared powder metallurgy materials is very critical. The compressive strength of powder metallurgy materials prepared by conventional preparation methods is low and cannot be compared. Good for gears, so a new powder metallurgy gear material with high compressive strength and its preparation method are needed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] (1) Weigh the powder raw material by weight, where Si is 29wt%, Cu is 12wt%, Mn is 7wt%, Ti is 1.7wt%, P is 1.3wt%, Y is 1.1wt%, Co is 1.9wt%, Sc is 1.4wt%, and the balance is Fe; (2) Put the above-mentioned powder raw materials taken according to weight into a high-speed mixer for high-speed mixing; (3) Vacuum ball mill the mixed metallurgical powder after being uniformly mixed. The material ratio is 40:1, the ball mill speed is 200r / min, and the ball milling time is 8h; (4) The metallurgical powder raw material after ball milling is put into a mold for compression molding, and the pressure per unit area is 920kgf / cm 2(5) After pressing and forming, the pressed metallurgical billet is sintered, the sintering temperature is 910°C, the heating rate is 30°C / min, and the temperature is kept stable for 70 minutes; the powder metallurgy gear material which is resistant to compression is prepared by cooling.

Embodiment 2

[0060] (1) Weigh the powder raw material by weight, where Si is 14wt%, Cu is 35wt%, Mn is 2wt%, Ti is 0.4wt%, P is 0.6wt%, Y is 0.4wt%, Co is 1.1wt%, Sc is 0.3wt%, and the balance is Fe; (2) Put the above-mentioned powder raw materials taken by weight into a high-speed mixer for high-speed mixing; (3) Vacuum ball mill the mixed metallurgical powder after uniform mixing, ball The material ratio is 40:1, the ball mill speed is 200r / min, and the ball milling time is 14h; (4) The metallurgical powder raw material after ball milling is put into a mold for compression molding, and the pressure per unit area is 780kgf / cm 2 (5) After pressing and forming, the pressed metallurgical billet is sintered, the sintering temperature is 960°C, the heating rate is 30°C / min, and the temperature is kept stable for 30 minutes; the powder metallurgy gear material which is resistant to compression is prepared by cooling.

Embodiment 3

[0062] (1) Weigh the powder raw material by weight, where Si is 18wt%, Cu is 30wt%, Mn is 6wt%, Ti is 0.7wt%, P is 1.1wt%, Y is 0.9wt%, Co is 1.6wt%, Sc is 1.0wt%, and the balance is Fe; (2) Put the above-mentioned powder raw materials taken according to weight into a high-speed mixer for high-speed mixing; (3) Vacuum ball mill the mixed metallurgical powder after uniform mixing, ball The material ratio is 40:1, the ball mill speed is 200r / min, and the ball milling time is 9h; (4) The metallurgical powder raw material after ball milling is put into a mold for compression molding, and the pressure per unit area is 790kgf / cm 2 (5) After pressing and forming, the pressed metallurgical billet is sintered, the sintering temperature is 950°C, the heating rate is 30°C / min, and the temperature is kept stable for 60 minutes; the powder metallurgy gear material which is resistant to compression is prepared by cooling.

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Abstract

The invention belongs to the field of powder metallurgy and discloses a compression-resistance powder metallurgical gear material and a preparation method thereof. The compression-resistance powder metallurgical gear material comprises the following components: 14-29wt% of Si, 12-35wt% of Cu, 2-7wt% of Mn, 0.4-1.7wt% of Ti, 0.6-1.3wt% of P, 0.4-1.1wt% of Y, 1.1-1.9wt% of Co, 0.3-1.4% of Sc and the balance of Fe. The preparation method comprises the following steps: 1, weighing powdered raw materials by weight; 2, mixing the powdered raw materials at a high speed; 3, carrying out vacuum ball-milling on the uniformly mixed metallurgical powder; 4, loading the metallurgical powder raw materials into a mold and performing compression molding; and 5, sintering the compressed metallurgical blank and cooling to obtain the powder metallurgical gear material.

Description

technical field [0001] The invention belongs to the field of powder metallurgy, and relates to a powder metallurgy material and a preparation method thereof, in particular to a compressive powder metallurgy gear material and a preparation method thereof. Background technique [0002] Powder metallurgy is a branch of metallurgy and material science. It is an industry that manufactures metal powder and uses metal powder (including a small amount of non-metallic powder mixed) as raw material to manufacture materials and products by forming and sintering methods. The powder metallurgy industry is an important basic component manufacturing industry in the machinery industry. According to different metal powder bases and uses, powder metallurgy products can be roughly divided into powder metallurgy machinery parts, friction materials, magnetic materials, hard alloy materials, etc. Among them, powder metallurgy machinery parts have wide application fields, large demand and high tec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/16C22C30/02C22C1/05
CPCB22F3/10B22F5/08C22C1/05C22C30/00C22C30/02C22C33/02C22C38/002C22C38/005C22C38/02C22C38/04C22C38/10C22C38/14C22C38/16
Inventor 刘莉王爽邱晶
Owner 刘阳
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