Abstract:
한쪽편압축식사판콤프레서에 사용되는 철계 또는 알루미늄계 재료의 압축쪽의 슬라이딩성능을 높이기위하여, 40%이하의 납, 30%이하의 주석, 0.5%이하의 인, 15%이하의 알루미늄, 10%이하의 은, 5%이하의 규소, 5%이하의 망간, 5%이하의 크롬, 20%이하의 니켈 및 30%이하의 아연으로 이루어지는 군으로부터 선택된 1종 또는 2종이상을, 0.5∼50%의 범위로 함유하고, 나머지부가 실질적으로 구리 및 불순물로 이루어진 구리계합금의 용사층을, 압축실쪽의 적어도 슈우(15b)와의 사판(14)슬라이딩면에 형성하고, 또한 압축실반대쪽의 적어도 슈우(15a)와의 사판(14)면에, 전해도금, 무전해도금, 윤활제의 피복, 인산염화성처리 또는 경화처리를 실시한다.
Abstract:
The present invention relates to a method for manufacturing a metal alloy part (PF) by spark plasma sintering, comprising the simultaneous application, inside a die (M), of a uniaxial pressure and of an electric current to a powder component material that has the following composition: 42 % to 49 % of aluminium; 0.05 % to 1.5 % of boron; at least 0.2 % of at least one element selected from tungsten, rhenium and zirconium; optionally 0 % to 5 % of one or more elements selected from chromium, niobium, molybdenum, silicon and carbon; the balance being titanium, and the total of the elements without aluminium and titanium being 0.25 % to 12 %.
Abstract:
Die Erfindung betrifft eine Strömungsmaschine mit einer Welle (1), von der ein Wellenabschnitt (2) in einem Einströmbereich (3) angeordnet ist. Zumindest der Wellenabschnitt (2) weist einen Pulver-Metallurgisch hergestellten und anschließend über eine Heiß-Isostatische Presse (HIP) behandelten Werkstoffkörper (4) auf.
Abstract:
The invention concerns a process which consists in applying on a part to be protected a composition containing a mixture of boron powder consisting mainly of TiB2, of powder of at least one vitreous refractory oxide consisting mainly of a borosilicate mixture, and a binder containing a ceramic precursor resin. The resin is crosslinked and then transformed into ceramic by heat treatment or during first exposure of the part when it is used at high temperatures.
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.