A copper-tin alloy powder and a method for producing the same
Copper-tin alloy powder was prepared by granulation with polymer binders and redox treatment, which solved the problems of powder shedding and lubricant loss in bearing production. This resulted in copper-tin alloy powder with high strength and good flowability, thus improving the operating performance of bearings.
CN116921686BActive Publication Date: 2026-01-16JIANGSU JICUI ADVANCED METAL MATERIAL RES INST CO LTD
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Patent Information
- Application Number
- CN202310898193.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2022-07-29
- Filing Date
- 2023-07-21
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2043-07-21
AI Technical Summary
Technical Problem
Existing copper-tin alloy powder is prone to being knocked off during bearing production. Inappropriate pore structure can lead to lubricant leakage or loss, affecting the bearing's operating performance.
Method used
Copper-tin alloy powder was prepared by granulation with a polymer binder, followed by oxidation and reduction treatments to form a three-level porous structure, thereby improving the sphericity and strength of the powder and ensuring a proper distribution of pores.
Benefits of technology
The prepared copper-tin alloy powder has high strength and good flowability. Its porous structure can effectively store lubricating oil, reduce oil spillage, and improve the operating performance of the bearing.
✦ Generated by Eureka AI based on patent content.
Abstract
The application discloses a copper-tin alloy powder and a preparation method thereof. The copper-tin alloy powder is spherical and has 3-level pores, and the loose bulk density is 1.8-2.9 g / cm 3 The 3-level pores are as follows: the first-level pore size is 20-200 µm; the second-level pore size is 5-30 µm; and the third-level pore size is 0.5-10 µm. The strength of the powder compact prepared by the method is high. During the pressing process, the metal powder is deformed, and the powder is attached together. The lower the loose bulk density of the powder is, the larger the attached area is, and the better the strength of the green compact is. The strength of the bronze green compact prepared by the method is very high, and the strength of the green compact is 6-12 MPa.
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