Sliding member and method for producing sliding member
AssigneeSenju Metal Industry Co., Ltd.
InventorsNaoki SATO, Toshiaki Takeshita, Hideaki Tanibata, Naokazu Noguchi, Yuji Kawamata, Ryoichi Suzuki
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Abstract
A sliding member includes a cylindrical metal substrate; a porous layer formed on the inner peripheral surface of the metal substrate; and a sliding layer covering the porous layer. The porous layer is formed of a metal simple substance or an alloy composition. The sliding layer is formed of a resin composition. The sliding member has, on a part of the inner peripheral surface, a region where the resin composition is absent and thus a nonporous layer formed of the metal simple substance or the alloy composition is exposed.
Claims19
A sliding member comprising:
- a cylindrical metal substrate;
- a porous layer formed on an inner peripheral surface of the metal substrate;
- and
- a sliding layer covering the porous layer,
- wherein the porous layer is formed of a metal simple substance or an alloy composition,
- the sliding layer is formed of a resin composition, and
- the sliding member has, on a part of the inner peripheral surface, a region where the resin composition is absent and thus a nonporous layer formed of the metal simple substance or the alloy composition is exposed.
A bearing comprising:
- a cylindrical metal substrate;
- a porous layer formed on an inner peripheral surface of the metal substrate;
- and
- a sliding layer covering the porous layer,
- wherein the porous layer is formed of a metal simple substance or an alloy composition,
- the sliding layer is formed of a resin composition, and
- the bearing has, on a part of the inner peripheral surface, a region where the resin composition is absent and thus a nonporous layer formed of the metal simple substance or the alloy composition is exposed.
A method for manufacturing a sliding member, comprising:
- a step of forming a porous layer comprising a metal simple substance or an alloy composition on one surface of a metal substrate;
- a step of curling the metal substrate with the porous layer inside to shape into a cylinder;
- a step of welding a seam portion from outside the metal substrate, wherein the porous layer on the seam portion is molten to form a nonporous layer formed of the metal simple substance or the alloy composition;
- and
- a step of impregnating a surface of the porous layer with a raw material resin of a sliding layer and firing the raw material resin to form a sliding layer comprising the resin composition and covering the porous layer, wherein a surface of the nonporous layer is not impregnated with the raw material resin, whereby a region where the resin composition is absent and thus the nonporous layer is exposed is formed on a part of an inner peripheral surface of the sliding member.
A method for manufacturing a sliding member, comprising:
- a step of forming a porous layer comprising a metal simple substance or an alloy composition on one surface of a metal substrate;
- a step of impregnating a surface of the porous layer with a raw material resin of a sliding layer and firing the raw material resin to form a sliding layer comprising the resin composition and covering the porous layer;
- a step of curling the metal substrate with the sliding layer inside to shape into a cylinder;
- and
- a step of welding a seam portion from outside the metal substrate, wherein the porous layer on the seam portion is molten to form a nonporous layer formed of the metal simple substance or the alloy composition, and the sliding layer on the seam portion is separated, whereby a region where the resin composition is absent and thus the nonporous layer is exposed is formed on a part of an inner peripheral surface of the sliding member.
Dependencies are inferred from the claim text.