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 compressor comprising: a cylinder block (30,31) containing a cylinder bore (41,42); a drive shaft (39) rotatably supported by the cylinder block; a cam (40,48) attached to the drive shaft to be rotatable integrally therewith; a piston (1,43) housed in the cylinder bore; and a shoe (7,44) having a spherical and flat sliding surface and slidably interposed between the piston and the cam; the piston being reciprocated via the shoe as the cam is rotated; the piston being made of an aluminum or aluminum alloy matrix and having a receiving portion (2,46) for slidably receiving the spherical surface (8,47) of the shoe therein, characterized in that the shoe is made of a ferrous metal matrix and a coating layer containing tin as a major component is formed at the receiving recess of the piston.
Abstract:
The invention relates to Cu-based sintered alloy, which contains 10 to 40 % of Z, 0.3 to 6 % of Al, 0.03 to 1 % of oxygen and, as an additional element, either 0.1 to 5 % of at least one of Fe, Ni and Co or one of 0.1 to 5 % of Mn. 0.1 to 3 % of Si and 0.1 to 3 % of at least one of W and Mo, the balance being Cu and unavoidable impurities, and which has an excellent abrasion resistance in an atmosphere of room temperature to 400 C, a high strength, a high toughness, and excellent synchronization properties for a mating member as evaluated in terms of a friction coefficient. The invention also relates to the parts of automobile mechanisms formed of this alloy. Examples of the parts include synchronizing rings of a transmission, valve guides of an engine and bearings of a turbo charger.
Abstract:
본 발명은 다이아몬드 유사 탄소(DLC) 또는 몰리브덴(molybdenum)과 결합된 코팅들을 포함하는 DLC 및/또는 기술이 달성되는 상태에 비해 마모 및 마찰의 감소를 향상시키는 방식으로 윤활제를 포함하는 아연(zinc)을 사용할 수 있는 슬라이딩 부품들을 위한 코팅에 관한 것이다. 본 발명에 따른 코팅 시스템은, 적어도 금속을 포함하는 Me-C/aC:X 타입의 탄소 레이어(carbon layer)로, 성분구성(element composition)이, 0.3≤a≤0.6 및 0 a C 1-a ) 1-b X b 로 표현될 수 있는데, M은 금속 또는 다른 금속들의 조합이며, X는 M과 다른 성분이며 C와 다른 성분이고, 또는 X는 Me와 다른 성분의 혼합물(mixture)이며 C를 포함하지 않는다. Me는 바람직하게는 크롬(Cr) 또는 몰리브덴 (Mo)일수 있으며, X는 바람직하게는 수소(H) 일수 있으며 또는 실리콘 및 수소의 혼합물(Si+H)일 수 있다.