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Antioxidative leadless copper alloy powder prepared by water mist method

A lead-copper alloy, anti-oxidation technology, applied in the field of powder metallurgy, can solve problems such as increasing costs, achieve good strength, uniform and round particles, and reduce costs

Inactive Publication Date: 2016-10-26
安徽旭晶粉体新材料科技有限公司
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Problems solved by technology

But bismuth is a rare metal, which undoubtedly increases a lot of cost

Method used

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Embodiment Construction

[0018] An oxidation-resistant lead-free copper alloy powder prepared by a water mist method, which is prepared from the following components: 500 parts of raw copper powder, 30 parts of tin powder, 8 parts of zinc powder, 5 parts of benzotriazole, molybdic acid 5 parts of ammonium, 5 parts of sodium lauryl sulfate, 7 parts of OP surfactant.

[0019] A kind of anti-oxidation lead-free copper alloy powder prepared by water mist method, it is prepared by following steps:

[0020] (1) Preparation of raw materials copper powder, tin powder and zinc powder

[0021] The copper powder, tin powder and zinc powder are heat treated separately, the heat treatment temperature is 600°C, and the heat treatment atmosphere is a reducing atmosphere; after the heat treatment, the copper powder, tin powder and zinc powder are respectively crushed and screened to obtain raw copper with a particle size of less than 150 μm powder, raw tin powder and raw zinc powder;

[0022] (2) Anti-oxidation of ...

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Abstract

Antioxidative leadless copper alloy powder prepared by a water mist method is characterized in that the powder is prepared from the following ingredients: 500 parts of raw copper powder, 25-30 parts of tin powder, 8-10 parts of zinc powder, 3-7 parts of benzotriazole, 3-7 parts of ammonium molybdate, 3-7 parts of lauryl sodium sulfate and 6-8 parts of OP surfactant. The raw copper powder is subjected to oxidation resistance treatment; then, the contents of copper, tin and zinc are allocated to achieve lead freeness of the product; and the antioxidative leadless copper alloy powder is prepared; and the prepared antioxidative leadless copper alloy powder is uniform and round in particle, and has low oxygen content, and good strength, thermal conductivity, abrasive resistance and color.

Description

technical field [0001] The invention relates to the field of powder metallurgy, and relates to a method for preparing oxidation-resistant copper powder and copper alloy powder by water atomization. Background technique [0002] Traditional copper alloy powder is composed of copper, lead, tin, zinc (or phosphorus). Because it contains lead, it is poisonous to the human body and pollutes the environment. Lead and its compounds are toxic to various tissues of the human body. The poisoning route can be Its vapor or dust is inhaled by the respiratory tract, and then the phagocytes in the respiratory tract quickly bring it to the blood; or it is absorbed through the digestive tract and enters the blood circulation to cause poisoning. With the increasing awareness of environmental protection and their own health requirements and the popularization of mechanized transportation, production and daily life tools, people realize that the waste generated during the use of various tools w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F9/08
CPCB22F9/082B22F2009/0828B22F1/142B22F1/10
Inventor 江建平
Owner 安徽旭晶粉体新材料科技有限公司
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