Abstract:
In a gas compressor, a fastener part is fastened by a fastener member comprised of a bolt coated with a zincate bath and a gasket, any leakage from the fastener member is prevented, the gas compressor including a case 11 and a front head 12 fastened by a first fastener member 80, a housing 10 having a holding space in the interior portion, a compressor main body 60 that compresses gas held in the holding space and fastened to the housing 10 by a second fastener member 70, the second fastener member 70 being a fastener member comprised of a bolt 71 coated with a zincate bath in combination with a copper gasket 72 coated with tin.
Abstract:
A multi-layer sliding part is prepared by a process including mixing 1-50 parts by volume of a Cu-plated solid lubricant powder with 100 parts by volume of a Cu-based alloy powder comprising 5-20 mass % of Sn and a remainder of Cu to form a mixed powder, sintering the mixed powder in a reducing atmosphere to form a sintered mass, pulverizing the sintered mass to form a powder, dispersing the powder formed by pulverizing on a metal backing plate, and sintering the dispersed powder to bond grains of the dispersed powder to each other and to the backing plate. After sintering of the pulverized powder to form bearing metal layer, the bearing metal layer is pressed and densified. After densification, the bearing metal layer is annealed, again pressed, and then coated with a resin having good sliding properties.
Abstract:
The invention relates to an axial piston engine having an inclined disc (13), sliding blocks (9, 10) provided with bearing sockets (25) and a retaining ring (18), the curved outer face of which is in contact with the inner face of the retaining ring (18). The bearing points (19-21) of the retaining ring (18) are provided with slide-assisting material at least in the contact region to the engine shaft (1).
Abstract:
A lead-free plain bearing is formed by dispersing an alloy powder formed from 7-13 mass percent of Sn, 0.1-5 mass percent of Ag, and Cu on a backing, such as a steel plate, and sintering. The alloy powder may further include one or more of 0.05-0.5 mass percent of molybdenum disulfide powder and 0.1-2 mass percent of graphite powder. The bearing surface may be rough finished by machining to a roughness of 0.3-1 nullm Ra and then fine finished by polishing to a roughness of at most 0.1 nullRa.
Abstract:
A compressor includes a piston and a shoe, which contact and slide on one another. The piston includes a sliding surface, on which a solid lubricant film is formed. The shoe includes a sliding surface that slides on the first sliding surface. A soft film that mainly contains soft metal is formed on the second sliding surface. The solid lubricant that forms the solid lubricant film is a solid lubricant other than a soft metal.
Abstract:
A single-headed piston type swash-plate-operated refrigerant compressor is provided with a swash plate mounted on a rotatable drive shaft and having front and rear opposite surfaces, single headed pistons arranged on the rear side of the swash plate to reciprocate in respective cylinder bores, and front and rear shoes to be held in slide-contact with the peripheral parts of the front and rear surfaces of the swash plate to engage a tail end part of each of the single headed pistons with the swash plate in which the front and rear surfaces of the swash plate are provided with respective uppermost layers having physical surface properties different from one another. A front uppermost and a rear uppermost layer of the swash plate are formed of a sprayed coating of, for example, a copper-base material and the rear uppermost layer is coated by a solid lubricant layer containing a solid lubricant, such as molybdenum disulfide, at least in a part of the solid lubricant. The thickness of the solid lubricant layer is measured and controlled by using the surface of the front layer as a reference plane.
Abstract:
A variable-orifice fluid restrictor for use with a supercritical extractor or chromatograph includes an inlet line for fluid at a pressure above its critical pressure, an extended tubular probe having an inner and an outer surface and a proximal and a distal end. The proximal end of the probe is disposed toward the inlet line. The distal end of the probe includes an adjustable orifice means adapted for metering the fluid and having first and second orifice members and an adjusting stem having first and second ends. The adjustable orifice means is adjacent to the outer surface of the probe and the orifice means is adjustable with the adjusting stem. The end of the adjusting stem is located at the distal end of the probe and is adapted for moving the first orifice member with respect to the second orifice member to control the adjustable orifice for varying the restriction of fluid passing through the adjustable orifice.
Abstract:
An electrochemical method of modifying the surface hardness of a non-allotropic metal member 10, comprising: (a) forming the member to near net-shape with at least one surface 12 to be hardened; (b) subjecting the surface 12 to rapid melting and resolidification by incidence of an electrical discharge between an electrode 16 and the surface 12 closely spaced thereto, the spacing containing an electrolyte with plasma forming capability, the surface 12 being hardened by crystallographic change of the globules resulting from substitutional alloying; and (c) cropping the surface grains 29 of the surface to increase load bearing capacity while retaining liquid retention capacity.
Abstract:
A swash plate of a swash-plate compressor is subjected to sliding on shoes and is required to have excellent seizure resistance and wear resistance under the dry lubricating condition. The swash plate according to the present invention is provided with the surface-treated layer, i,e., the intermediate layer consisting of Cu, Sn or metal phosphate, and a sliding contact layer consisting of MoS.sub.2 and/or graphite and thermosetting resin.
Abstract:
To collect analyte from a supercritical fluid extractor, the collector lifts vials into place by a biasing device that guides the file up to the restrictor where it is sealed. The vial can be moved back down from the collecting mechanism even if frost forms on the vial while the restrictor remains stationary. This vial is held in place by a guide that contains the seal for sealing the vial when it is raised in place.