公开(公告)号：US5104444A

公开(公告)日：1992-04-14

申请号：US390256

申请日：1989-08-07

申请人： Masahiko Shioda ,  Masashi Arita ,  Katsuji Tanizaki ,  Koue Ohdawa ,  Takeshi Sakai

发明人： Masahiko Shioda ,  Masashi Arita ,  Katsuji Tanizaki ,  Koue Ohdawa ,  Takeshi Sakai

IPC分类号： C22C21/02 ,  C22C1/04 ,  C22C21/00 ,  F16C33/12

CPC分类号： C22C1/0416 ,  C22C21/003 ,  F16C33/121 ,  Y10T428/12014

摘要： An aluminum alloy is prepared from an aluminum alloy powder having a composition of:lubricating componentPb: 3 to 15 Wt %;hardening componentSi: 1 to 12 Wt %;rainforcement componentone or more selected among Cu, Cr, Mg, Mn, NiZn, Fe and: 0.2 to 5.0 Wt %;and remainder of aluminum as principal material or matrix.To the aluminum alloy powder set forth above, powder state Pb in 3 to 12 Wt % is added. With the mixture of the aluminium alloy powder and Pb powder, a billet is formed. For the billet, extrustion process is performed in a extrusion ratio greater than or equal to 40. In the extruded block, Si particle dispersed in the aluminum matrix is in a grain size smaller than or equal to 12 .mu.m. Furthermore, at least of half of added Pb power particle is dispersed to have greater than or equal to 0.74 of circularity coefficient.

公开(公告)号：US4857267A

公开(公告)日：1989-08-15

申请号：US104595

申请日：1987-09-29

申请人： Yoshihiro Maki ,  Akira Matsuyama ,  Katsuji Tanizaki ,  Noboru Okabe ,  Katsuhiro Kishida ,  Takeshi Sakai ,  Toshinaga Ohgaki ,  Masahito Fujita

发明人： Yoshihiro Maki ,  Akira Matsuyama ,  Katsuji Tanizaki ,  Noboru Okabe ,  Katsuhiro Kishida ,  Takeshi Sakai ,  Toshinaga Ohgaki ,  Masahito Fujita

IPC分类号： F16C33/12 ,  C22C1/04 ,  C22C21/00 ,  C22C21/12

CPC分类号： C22C1/0416 ,  C22C21/00 ,  C22C21/12 ,  B22F2998/10 ,  Y10S384/912

摘要： The invention provides an aluminum base bearing alloy which is excellent in both lubricating capability and fatigue resistance and is useful, e.g. in automotive engines. The bearing alloy consists essentially of at least one lubricating element such as Pb and/or Sn the total amount of which is more than 0.04 and not more than 0.07 by sectional area ratio to the aluminum matrix, Si the amount of which is in the range from 0.01 to 0.17 by sectional area ratio to the aluminum matrix, 0.2-5.0 wt % of at least one reinforcing element such as Cu and/or Cr, 0-3.0 wt % of at least one refining element such as Ti and/or B and the balance of Al. The grain size of the lubricating element(s) is not larger than 8 .mu.m, and the grain size of Si is not larger than 12 .mu.m and preferably not smaller than 6 .mu.m. The bearing alloy is produced by preparing a raw material alloy powder mixture in which Si grains are grown to the desired size by heat treatment, compacting the alloy powder mixture into a billet and extruding the billet at an extrusion ratio not lower than 10.

摘要翻译： 本发明提供了一种铝基轴承合金，其具有优异的润滑性能和耐疲劳性，并且是有用的。 在汽车发动机。 轴承合金基本上由至少一种润滑元素，例如Pb和/或Sn，其总量大于0.04且不大于0.07，与铝基体的截面积比相比，Si的量在该范围内 0.01〜0.17的截面积比与铝基体，0.2-5.0重量％的至少一种增强元素例如Cu和/或Cr，0-3.0重量％的至少一种精炼元素如Ti和/或B 和Al的平衡。 润滑元件的粒径不大于8μm，Si的晶粒尺寸不大于12μm，优选不小于6μm。 通过制备通过热处理将Si晶粒生长至所需尺寸的原料合金粉末混合物来制造轴承合金，将合金粉末混合物压实成坯料并以不低于10的挤出比挤出坯料。