Preparation method of low-apparent-density copper tin alloy powder for micro oil-retaining bearing
A technology of copper-tin alloy and low porosity ratio, which is applied in the field of preparation of copper-tin alloy powder with low porosity ratio for miniature oil-impregnated bearings, can solve the problems of difficult micro-oil-impregnated bearing sintered products, uneven distribution of alloy elements, and poor powder formability Achieve low cost, improve pressing and sintering performance, and reduce equipment investment
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0019] Example 1
[0020] A method for preparing copper-tin alloy powder with low bulk ratio for miniature oil-impregnated bearings, the weight percentage of the component phase of the copper-tin alloy powder is: Cu: 90%, Sn: 10%, and the method steps are as follows:
[0021] (1) Atomized powdering process: After mixing the electrolytic copper plate and tin material in a weight ratio of 9:1, heating to a molten state, copper-tin alloy powder particles are prepared by water atomizing powdering equipment;
[0022] (2) Oxidation powder process: the alloy powder is dynamically oxidized in a rotary kiln at 450℃, and the oxidation time is 60min;
[0023] (3) Powder reduction process: The oxidized copper-tin alloy powder is reduced in a chain reduction furnace, and the protective atmosphere used for the reduction is ammonia decomposition atmosphere (N 2 : H 2 =1:3), the reduction temperature is 550℃, and the reduction time is 45min;
[0024] (4) The reduced powder particles are sieved and comb...
Example Embodiment
[0028] Example 2
[0029] Except that the weight percentage of the composition phase of the copper-tin alloy powder is: Cu: 65%, Sn: 35%, and the electrolytic copper plate and the tin material are mixed in a weight ratio of 65:35, the rest is the same as in Example 1. The copper-tin obtained in this example The bulk density of alloy powder is 2.8g / cm 3 about.
Example Embodiment
[0030] Example 3
[0031] Except that the weight percentage of the component phase of the copper-tin alloy powder is: Cu: 95%, Sn: 5%, and the electrolytic copper plate and the tin material are mixed in a weight ratio of 95:5, the rest is the same as in Example 1. The copper obtained in this example The bulk density of tin alloy powder is 2.2g / cm 3 about.
PUM
Property | Measurement | Unit |
---|---|---|
Bulk density | aaaaa | aaaaa |
Bulk density | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap