Daido Metal Company Ltd.

C.uyemura Co., Ltd.

Motomu Wada

Masaaki Sakamoto

Tadashi Tanaka

Hideo Ishikawa

Takayoshi Sasaki

Masaki Tanimoto

Takayuki Shibayama

Koichi Yamamoto

Sanae Mori

Kenji Sakai

Hideo Tsuji

Tadashi Chiba

Sowjun Matsumura

Hideyuki Kidokoro

Yoji Nagai

Kiyoshi Asakawa

Youji Nagai

Syoichi Oohora

There is disclosed a bearing structure having an excellent fretting resistance. In the bearing structure in which a sliding bearing is mounted at its back face on a housing, and rotatably supports a rotation shaft at an inner face thereof, and a covering layer of an amorphous alloy is formed on at least one of the back face of the sliding bearing and an inner surface of the housing. Thanks to an excellent non-adhesion property of the amorphous alloy, adhesion is less liable to develop between the back face of the bearing and the housing even if a slight friction repeatedly occurs therebetween, thereby imparting an excellent fretting resistance to the bearing structure.

Bearing structure of sliding bearing

An apparatus and a method of surface-treating a half sliding bearing, the method comprising the steps of: preparing a tank which accommodates a surface-treatment solution and an anode of an alloy to be applied to the bearings as a surface treatment; successively and one by one introducing the bearings into the surface-treatment solution; performing the surface treatment in such a manner that the surface layer of the alloy is applied to the surface of the bearings by feeding an electricity between a cathode served by the bearing and the anode via the surface-treatment solution while moving, in the surface-treatment solution, the bearings being introduced into the surface-treatment solution in a state in which the bearings is brought into contact with one another; and successively and one by one drawing out the bearings, which have been applied with the surface treatment, from the tank.

Method of surface-treating a half sliding bearing and apparatus for same

Method of electroplating half sliding bearings

A multilayer sliding material for high-speed engine, comprising a steel back metal, a Cu or Cu-base alloy plating layer, a Cu-Pb bearing alloy layer, and an overlay, said steel back metal having 155 or more of Vickers hardness and 42 kgf/mm.sup.2 or more of 0.2% yield strength, a Cu-Pb bearing alloy layer containing 15-30 wt % of Pb and 0.5-2.0 wt % of Sn and having 0.25 cal/cm.s..degree. C. or more of thermal conductivity, 75 or more of Vickers hardness and 18 kgf/mm.sup.2 or more of tensile strength, said overlay of a lead base alloy containing 2-8 wt % of Sn and 3-11 wt % of In and having more than 250.degree. C. of melting start temperature. The material has a superior antiseizure property at high speed of engine. In particular, the rising of the melting start temperature of the metal of the overlay and the thermal conductivity of the bearing alloy provides a superior sliding property of plain bearing at high speed of engine.

Multilayer sliding material for high-speed engine and method of

There is disclose a method of and apparatus for surface-treatment of half sliding bearings having a multi-layer construction including a steel backing, a bearing alloy layer of copper alloy or aluminum alloy, an intermediate plating layer and a surface layer. A plurality of half sliding bearings are attached to a support member in such a manner that the half sliding bearings are arranged end-to-end into a semi-cylindrical configuration. The support member is transferred to be sequentially inserted into a plurality of openable and closable plating cases mounted respectively within pretreatment tanks and plating tanks, thereby sequentially forming the intermediate plating layer and the surface layer on the half sliding bearings.

Electroplating apparatus for plating half bearings

Disclosed is a composite plating film for sliding members, essentially containing at least one of the alloy elements selected from tin, indium, antimony, and copper; inorganic particles; and lead; the composition of the composite plating film being:

Composite plating film for sliding member

There is disclose a method of an apparatus for surface-treatment of half sliding bearings having a multi-layer construction including a steel backing, a bearing alloy layer of copper alloy or aluminum alloy, an intermediate plating layer and a surface layer. A plurality of half sliding bearings are attached to a support member in such a manner that the half sliding bearings are arranged end-to-end into a semi-cylindrical configuration. The support member is transferred to be sequentially inserted into a plurality of openable and closable plating cases mounted respectively within pretreatment tanks and plating tanks, thereby sequentially forming the intermediate plating layer and the surface layer on the half sliding bearings.

Method of and apparatus for surface treatment for half bearings

A sliding bearing such as a half sliding bearing, a cylindrical bushing and etc. includes a back metal of a three-layer construction composed of a back metal portion of austenitic stainless steel having a thermal expansion coefficient of not less than 15.times.10.sup.-6 /.degree.C., a plated bonding layer formed on the back metal portion, and a plating layer of Cu or a Cu alloy formed on the bonding layer. An alloy layer made of a copper-lead alloy or a lead-bronze alloy is formed on the back metal. With this construction, the alloy layer is positively bonded to the back metal. The austenitic stainless steel is of such a type that the back metal is less subjected to work hardening, and the austenitic stainless steel contains those components which prevent work-inducing martensite transformation.

Sliding bearing

A multilayer sliding material which is used, in particular, as the material of the bearings in internal combustion engines, comprising a steel backing layer, a bearing layer of copper-based alloy bonded to the steel backing layer, a silver or silver alloy plating layer bonded to the bearing layer, and a surface layer of lead-based alloy bonded to the silver or silver alloy plating layer, the silver or silver alloy plating layer having a thickness of more than 3 microns but not more than 50 microns. The multilayer sliding material having a thick plating layer of silver or silver alloy, excels in seizure-resisting.

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Owariasahi, Japan

Motomu Wada