发明授权
- 专利标题: Methods for preparing metallurgical powder compositions and compacted articles made from the same
- 专利标题(中): 制备冶金粉末组合物和压制制品的方法
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申请号: US13334622申请日: 2011-12-22
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公开(公告)号: US08703046B2公开(公告)日: 2014-04-22
- 发明人: Francis G. Hanejko
- 申请人: Francis G. Hanejko
- 申请人地址: US NJ Cinnaminson
- 专利权人: Hoeganaes Corporation
- 当前专利权人: Hoeganaes Corporation
- 当前专利权人地址: US NJ Cinnaminson
- 代理机构: Baker & Hostetler LLP
- 主分类号: B22F1/00
- IPC分类号: B22F1/00
摘要:
Provided are methods of preparing high density compacted components that increase that lubricity of metallurgical powder compositions while reducing the overall organic content of the compacted component. Method of preparing high density compacted components having a high density include the steps of providing a metallurgical powder composition having particles at least partially coated with a metal phosphate layer, and compacting the metallurgical powder composition in the die at a pressure of at least about 5 tsi. The metallurgical powder composition comprises a base-metal powder, optional alloying powders, and a particulate internal lubricant. The metal phosphate at least partially coats the base-metal powder, the optional alloying powder, or both. The metal phosphate coating increases the lubricity of metallurgical powders without the need for large quantities of organic material, e.g., lubricants and binders.
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