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Pre-alloyed diffusion method for producing tin bronze powder

A technology of pre-alloying and tin bronze, which is applied in the field of pre-alloying diffusion method for producing 660 tin bronze powder, can solve problems such as unfavorable powder forming, and achieve the effects of easy control of sintering size, easy forming and wide application range.

Inactive Publication Date: 2013-11-20
安徽明月新铜粉体新材料高科技有限公司
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing method for producing 660 tin bronze powder is not conducive to the molding of powder

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Embodiment Construction

[0007] The present invention will be further described below.

[0008] General embodiment of the present invention: the pre-alloying diffusion method of producing tin bronze powder, it comprises the steps: 90%-200 order water atomization pure copper powder, 5%-300 order zinc powder and 5%-300 order The tin powder is mixed in a V-shaped batch machine. During the mixing process, lithium stearate and 15% steel balls are added for batching for 50 minutes. After mixing, the box-type atmosphere furnace is used for diffusion sintering. The sintering temperature is 450°C and the diffusion sintering time is 30 minutes. minute.

[0009] Preferred example of the present invention: the pre-alloying diffusion method of producing tin bronze powder, it comprises the following steps: atomize pure copper powder with 88%-200 order water, 6%-300 order zinc powder and 6%-300 order tin Put the powder into a V-type batch machine for mixing. During the mixing process, add 1% lithium stearate and 20...

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Abstract

The invention discloses a pre-alloyed diffusion method for producing tin bronze powder. The method comprises the steps as follows: 86%-90% of water atomized pure copper powder smaller than 200 meshes, 5%-7% of zinc powder smaller than 300 meshes and 5%-7% of tin powder smaller than 300 meshes are placed in a V-shaped blending machine for mixing; during a mixing process, lithium stearate and 15%-25% of steel balls are added and blended for 50-70 minutes; and after the mixing is performed, a box type atmosphere furnace is adopted for diffusion sintering at the temperature of 450 DEG C for 30 minutes. With the adoption of the method, during a production process, the stability is good, the forming is easy, the sintering size is easy to control, the layering phenomenon is prevented, the crushing strength of the sintered product is good, and the application range of the finished product is wide.

Description

technical field [0001] The invention relates to a prealloying diffusion method for producing tin bronze powder, in particular to a prealloying diffusion method for producing 660 tin bronze powder. Background technique [0002] 660 tin bronze powder refers to copper alloy powder with copper as the matrix and 5% to 7% zinc and 5% to 7% tin as the main additive elements. With the rapid development of powder metallurgy, it is more and more widely used in the industry. 660 tin bronze powder is currently mainly used in the manufacture of oil-impregnated bearings (self-lubricating bearings), high-grade diamond tools, carburized copper for powder metallurgy sintered steel, surface decoration (steel surface, wood products), etc. At present, the production of 660 tin bronze powder in the world mainly adopts two production methods: mixing process and atomized alloy process. Because of the different processes, the performance of the produced 660 tin bronze powder is also different. Aft...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/08B22F9/20
Inventor 张玉林刘文栋胡新举沈根寿
Owner 安徽明月新铜粉体新材料高科技有限公司
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