Abstract:
A plain bearing comprising a housing and two plain bearing halves forming a cylindrical shape in combination and fixed in the housing. Each of the plain bearing halves has crush relieves formed at both ends of an inner circumferential surface thereof in a circumferential direction, an oil groove formed on the inner circumferential surface thereof and extending in the circumferential direction, a central crown portion at substantially central position in the circumferential direction and in communication with the oil groove, and inflow preventing portions formed between the crush relieves and the oil groove.
Abstract:
There is provided a method of forming a coat on an inner surface of a bearing, in which a jig 13 is attached to a rotor 2 while holding four bearings 12 for example, so as to form those in a cylinder shape. Then, while the rotor 2 is rotated at a circumferential speed of 0.3 m/sec, a nozzle 8 for airless spraying is inserted into the rotor 2, so that the nozzle 8 injects a coating material 30 from the inside of the bearings 12 toward an inner surfaces of the bearings 12 to apply the coating material thereon. Because the coating material 30 is injected from the nozzle 8 without using compressed air, the fly amount of the coating material is made less as compared to air spray painting.
Abstract:
A copper-based sliding material comprising sintered copper or sintered copper alloy, and 0.1 to 5 vol. % hard substance particles harder in hardness than said copper or copper alloy, said hard substance particles being substantially evenly dispersed so that, when at least one, randomly selected surface portion or sectional portion of said sintered copper or sintered copper alloy is partitioned into squares each having a side of 20 μm, at least one particle exists in each of squares not less than 80% of the whole squares. The copper-based sliding material has good anti-seizure property and superior resistance to fatigue without containing any lead.
Abstract:
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 μm2. 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.
Abstract:
A sliding member has a sliding alloy layer, an intermediate layer of Ni or a Ni alloy formed on the sliding alloy layer, and a soft layer of Sn or a Sn alloy formed on the intermediate layer. A recess is formed on the sliding side surface of the sliding alloy layer. The intermediate layer is formed on the inner surface of the recess. The sliding member is subjected to a heat treatment, whereby there are formed intermetallic compounds in the soft layer, which extend protrudently from the intermediate layer.
Abstract:
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.
Abstract:
The present invention provides a bonded membrane-electrode assembly for electrolysis of water, which enables the generation of hydrogen capable of being used as a fuel for a fuel cell by electrolyzing water, and a water electrolyzer constructed using the bonded membrane-electrode assembly, so that hydrogen can be produced safely. The bonded membrane-electrode assembly includes a solid polymer electrolyte membrane, an oxygen electrode bonded to one of sides of the solid polymer electrolyte membrane, a hydrogen electrode bonded to the other side of the solid polymer electrolyte membrane. The oxygen electrode includes a porous sheet-shaped carbon element plated with iridium and coated with a mixture containing carbon and a resin for a solid polymer membrane. The hydrogen electrode includes a porous sheet-shaped carbon element which is coated with a mixture containing carbon and a resin for a solid polymer membrane and further coated with a mixture containing Pt (alloy) and/or Pt (alloy)-carried carbon and a resin for a solid polymer membrane.
Abstract:
A container for containing a long article wound on a bobbin into a roll and having both widthwise ends includes a container body having at least one end formed with an opening, a cover closing the opening of the container body, a sealing member sealing a gap between the container body and the cover, an stem fixed to either the container body or the cover so that the bobbin is mounted on the stem, a bobbin fixing unit for fixing the bobbin, and a holding unit for holding the article wound on the bobbin so as to prevent the article from being detached from the bobbin by pressing both widthwise ends of the article wound on the bobbin.
Abstract:
The invention provides a hydraulic shock absorber which can satisfy a demand of weight saving for a rod guide and can reduce a manufacturing cost. Since a rod guide is constituted by a press molded product formed by press molding a sheet member, and at least a sliding surface of the rod guide with respect to a piston rod is coated with a sliding synthetic resin layer, it is possible to achieve a widely weight saving in comparison with the case of using a metal sintered housing, it is possible to secure a sufficient rigidity in comparison with the case that an entire of the rod guide is formed by a synthetic resin for sliding, and it is possible to achieve a further weight saving in comparison with the structure in which a composite sliding member is pressed.
Abstract:
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 400null 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.