公开(公告)号：US4000981A

公开(公告)日：1977-01-04

申请号：US619932

申请日：1975-10-06

申请人： Akira Sugafuji ,  Hiroshi Kurimoto ,  Tadaaki Takase

发明人： Akira Sugafuji ,  Hiroshi Kurimoto ,  Tadaaki Takase

IPC分类号： C22C1/04 ,  C22C9/00 ,  F16C33/12 ,  B22F5/00

CPC分类号： C22C1/0425 ,  F16C33/121 ,  F16C2204/14 ,  F16C2220/20

摘要： A sintered self-lubricating article having great oxidation resistance, high dimension-stability and high wear resistance at elevated temperatures without assistance of any other lubricants and consisting essentially of 5 to 10% by weight of tin, 8 to 40% by weight of zinc, 5 to 15% by weight of graphite and the balance being copper.

公开(公告)号：US4577443A

公开(公告)日：1986-03-25

申请号：US441080

申请日：1982-11-12

申请人： Toshiyuki Kitta ,  Wataru Abe ,  Tadaaki Takase

发明人： Toshiyuki Kitta ,  Wataru Abe ,  Tadaaki Takase

IPC分类号： E04C5/10 ,  E04C5/12

CPC分类号： E04C5/10

摘要： In a prestressed concrete structure executed by posttensioning method, a metallic sheath having an inner peripheral surface thereof in sliding contact with a tendon coated with a solid lubricating coating including polytetrafluoroethylene (PTFE).By the use of this metallic sheath, the sliding frictional resistance produced between the metallic sheath and tendon when the tendon is subjected to tensioning operation is considerably decreased to increase the prestressing force introduced into the structure accordingly.The solid lubricating coating is excellent in flexibility and contact properties, and good characteristics of coating are imparted to the sheath.

摘要翻译： 在通过后拉伸方法执行的预应力混凝土结构中，金属护套的内周表面与涂覆有包含聚四氟乙烯（PTFE）的固体润滑涂层的钢筋滑动接触。 通过使用这种金属护套，当钢筋受到张紧作用时，在金属护套和钢筋之间产生的滑动摩擦阻力大大降低，从而相应地增加引入结构的预应力。 固体润滑涂层的柔韧性和接触性能优异，并且涂层的良好特性赋予护套。