制造烧结金属含油轴承高性能青铜粉.pdf

25 5 Vol25, No5 2007 10 owder Metallurgy Technology Oct2007 : 近年来, 铜锡等原料价格上涨, 国际上一些知名金属粉末生产厂家都在开发制 青铜含油轴承用的性能高价格低廉的替代材料美国SCM 公司在北美Pow der M et. 2006年会上发表的, 题为High performance bronze pow ders for self lubricated bearings, 就是一篇关于替代传统 0Cu- 10Sn 青铜粉的新型 S2G 青铜粉的试验报告, 这篇报告介 绍了他们开发的新型S2G 青铜粉和传统预混合粉的性能比较制 的青铜含油轴承的性 能比较以及使用性能的对比经征得SCM 公司同意, 特将此文译为中文予以刊载, 供国 内相关业者参考需要指出的是, 国内现在以铜包铁粉替代铜粉制 青铜含油轴承者 日渐增多, 但很少有人作过全面的应用基础研究, 这是当前国内粉末原料生产厂家最需要 研究的重要问题之一 Nic Veloff Anil Nadkarni T homas Murphy ( SCM Metal Products, lnc. , 2601 weck Dr. Research Triangle Park, NC 2770 ) : , ( RCS) ( DC) , , , , , , , RCS : ; ; ; S2G High performance bronze powders for self lubricated bearings Nic Veloff, Anil Nadkarni,Thomas Murphy ( SCM Metal Products, Inc. , 2601 Weck Dr. Research Triangle Park, NC 2770 , USA) Abstract: Bearing performance of self lubricated bronze bearings is dependent on a combination of many factors, such as sized density, Radial Crush Strength ( RCS) , oil content, surface finish, applied load, shaft speed, and pore structure. Compacted and sintered densities, and Dimensional Change( DC) during sintering are important in the manufactrure of the bearings. Thispaper describes a series of new bronze powderst hat produce sintered bearings wit h improved performance. Performance evaluation of these bearings show ed lower coefficients of friction, low er peak and steady state temperatures, and higher RCS t han bearings made from standard premixed bronze pow ders. The superior performance is attributed to a finer