Daido Metal Company Ltd.

C.uyemura Co., Ltd.

Daido Metal Corporation, Ltd.

Hideo Ishikawa

Takayuki Shibayama

Masaaki Sakamoto

Toshiaki Kawachi

Hideo Tsuji

Yukihiko Kagohara

Motomu Wada

Tatsuo Yamada

Tadashi Tanaka

Takeshi Hoshina

Sanae Mori

Satoshi Imai

Nobutaka Hiramatsu

Yasuo Ido

Yutaka Okamoto

Mituru Sugita

Koichi Yamamoto

Yoshiaki Sato

Kenji Sakai

Tadashi Chiba

Sowjun Matsumura

Satoshi Takayanagi

Mikio Suzuki

Hidemi Ogihara

Koji Kitagawa

Kiyoshi Asakawa

Yoji Nagai

Syoichi Oohora

Akinori Norito

Youji Nagai

Kunihiko Iwasaki

Cristian Petrica Lungu

Mitsuharu Sahashi

Ken Kitahara

Akio Umemura

Disclosed is a plain bearing for internal combustion engines, in which a back metal layer is lined with a bearing alloy layer made of an aluminum-base bearing alloy which has a Vickers hardness (Hv) of from not less than 40 to not more than 160. The bearing alloy layer includes a lubricative surface layer which has a thickness of not more than 10 &#x3bc;m and contains a solid lubricant. The maximum concentration of an element contained in the solid lubricant is not less than 5 mass %.

Plain bearing for internal combustion engines

Disclosed is a sliding member including an overlay layer made of a Bi based alloy comprising Cu as an essential element and at least one element selected from the group of Sn and In, wherein the Bi based alloy comprises 0.1 to 10 mass % of Cu and 0.5 to 10 mass % in total of the at least one element selected from the group of Sn and In.

Sliding member

A multilayer aluminum-base alloy bearing formed by bonding a bearing alloy layer made of an aluminum-base alloy to a steel back metal through an intermediate layer made of an aluminum-base alloy, the intermediate layer being composed of two layers, that is, a lower layer and an upper layer, the lower layer in contact with the steel back metal being lower in hardness than the upper layer. Since the lower layer is soft, it is excellent in bonding property for the back metal, and since the upper layer is hard, it withstands a load exerted on the bearing alloy layer.

Multilayer aluminum-base alloy slide member

A Bi base material of which a Miller index (202) face has the index of orientation of not less than 30% and in which the (202) face has the index of orientation assuming a maximum value as compared with those of other faces forms a minute structure and has a surface which is not a mirror finished surface but a fine, irregular surface on which minute and uniform projections in the form of a triangular pyramid or a quadrangular pyramid congregate. Therefore, the surface easily retains oil thereon to be improved thereby in oil wettability, as a result of which an improvement in anti-seizure is achieved.

Slide member

Disclosed is a multi-layered Al-base bearing consisting of a steel back layer, an intermediate Al alloy layer and an Al-base bearing alloy layer which contains one or more elements selected from the group of Cu, Zn, Mg and Si, and which is bonded to the steel back layer via the intermediate Al alloy layer. The bearing is subjected to solution treatment at a temperature of not lower than 400&#xb0; C. The intermediate Al alloy layer has a sub-layer being in direct contact with the steel back layer, and at least one sub-layer positioned closer than the former sub-layer to the Al-base bearing alloy layer. The former sub-layer consists of an Al alloy contains 2 to 8 mass % Si, and has a thickness proportion of 5 to 25% to the entire thickness of the intermediate Al alloy layer.

Multi-layered aluminum-base bearing

An overlay layer is formed on a bearing alloy layer via an intermediate layer. The overlay layer consists of Bi or a Bi alloy, and 0.05 to 25 vol % of hard particles. While the overlay layer is made of Bi or a Bi alloy, wear resistance thereof can be improved by adding the hard particles.

An aluminum bearing-alloy containing 1.5 to 8 mass % of Si is provided, in which there can be observed Si grains on the sliding surface of the aluminum bearing-alloy. A fractional area of the observed Si grains having a grain size of less than 4 &#x3bc;m is 20 to 60% of a total area of all the observed Si grains. Another fractional area of the observed Si grains having a grain size of from 4 to 20 &#x3bc;m is not less than 40% of the total area of all the observed Si grains.

Aluminum bearing-alloy

There is provided a sliding member comprising a bearing alloy layer and an overlay layer bonded to the bearing alloy layer which overlay layer is made of Bi having a crystal grain density of 50 to 300 pieces/100 &#x3bc;m. The overlay layer may be made of a Bi-base alloy containing Cu or Ag. The sliding member further comprises a conforming layer provided on the overlay layer in a case where the overlay layer is made of the Bi-based alloy.

In a slide member comprising a base member and a slide layer including a first surface fixed to the base member and a second surface being opposite to the first surface in a thickness direction of the slide layer and capable of contacting another member in such a manner that the another member is movable on the second surface, the slide layer includes silver as a main component of the slide layer and a solid lubricant.

Disclosed is a sliding member having a bearing alloy layer and a composite plating film provided on the bearing alloy layer. The composite plating film is made of a lead alloy containing 0.1 to 10 mass percent in total of copper and 0.3 to 25 volume percent in total of co-deposited inorganic particles. The outermost surface layer of the composite plating film, which has a thickness proportion of 10 to 40% to the entire thickness of the composite plating film, does not contain inorganic particles and copper. The lower layer of the composite plating film contains Cu and inorganic particles, such as Si N , dispersed therein.

Sliding member with composite plating film

There is provided a method of working a plain bearing and a working apparatus of the plain bearing, which make it easy to perform working by forming a plurality of inclined surfaces of different angles in portions on both sides of the inner peripheral surface of the bearing alloy metal of the plain bearing in the axial direction thereof. In the working method and apparatus, a working holder is provided which has a groove extending on the inner peripheral surface in the peripheral direction and portions on both sides of the groove in the transverse direction formed in step-like shape, a half bearing is housed in the working holder and both ends of the half bearing in the peripheral direction are pressed by use of pressing means Then, the half bearing undergoes plastic deformation so as to be fitted into the groove and both sides of the half bearing in the axial direction thereof come into abutment with the edges of the step-like portions and are deformed in a polygonal line form. In this state, both ends of the half bearing in the axial direction thereof are cut along one cylindrical surface by use of a broach As a result, two inclined surfaces of different angles are continuously formed in the portions of both sides of the bearing alloy metal of the half bearing in the axial direction thereof.

Method and apparatus of working plain bearing

A sliding bearing apparatus having a superior resistance to fretting comprising: a sliding bearing provided with a back metal layer having an inner face and a rear face, and a bearing alloy layer provided on an inner face of said back metal layer; and a housing having an inner face on which said sliding bearing is mounted, the rear face of said back metal layer and/or the inner face of said housing being provided with a coating made of a ceramic.

Sliding bearing apparatus

There is disclosed a plain bearing comprising: a back metal; and a bearing alloy layer bonded onto the back metal which bearing alloy layer is provided at a surface side thereof with a cylindrical bearing face extended in the direction of the axis of the plain bearing, the bearing alloy face being provided at each of axial terminal portions thereof with an inclination face inclined radially outwardly from a location defined between both of axially terminal ends of said bearing face toward said axially terminal ends thereof, the inclination face having an axial length varying along the circumference of the inclination face.

Plain bearing

In order to enhance the anti-seizure property of the sliding bearing while making the content of Pb contained in the Sn-based overlay layer smaller or while using no Pb if possible, there is provided a multi-layer sliding bearing comprising a back metal layer, a bearing alloy layer, an intermediate plating layer and a Sn-based overlay layer, the Sn-based overlay layer containing reinforcing metal and/or inorganic particles, the content of the reinforcing metal and/or inorganic particles being varied step-wise or successively in a direction of a thickness of the overlay layer so that the content in a thickness-wise central portion of said overlay layer is relatively high and so that another content in a surface portion of the overlay layer is zero or smaller than the content in the central portion.

Multi-layer sliding bearing

In order to enhance the fatigue resistance and the anti-seizure property while maintaining the embeddability, there is provided a plain bearing comprising a bearing alloy layer, an intermediate layer and an overlay layer sequentially formed on the inner surface of a back metal. The inner surface of the bearing alloy layer is provided with a recess &ldquo;a&rdquo; and protrusions &ldquo;b&rdquo;, thereby being made into a textured uneven surface. The protrusion has the shape of a oblique square at 45&deg; relating to the circumferential direction, so that when a foreign particle X introduced between sliding surfaces of a shaft and the plain bearing is moved in the circumferential direction in accordance with the rotation of the shaft, the foreign particle X runs against a side edge of the protrusion &ldquo;b&rdquo; and moves along the side edge, thereby the embedding of the foreign particle X is promoted. If the foreign particle fails to be adequately embedded, the foreign particle leaves the side edge again.

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Nagoya, Japan

Hideo Ishikawa