摘要:
A method of manufacturing sintered Al-Si series alloy parts having complex configurations such as scroll shaped parts wherein Al-Si series alloy powder solidified via rapid cooling prepared by adding effective components such as Si, Cu, Mg, Fe, Mn, Zr and Ce to Al is compression molded, the molded body (2) is sintered by heating via an electrical current conduction in a form of a plasma discharge (3) and then the sintered body (4) is worked by pressing, thereby the parts having complex configurations of light weight, high mechanical strength and toughness is manufactured with a simple installation and reduced processing manhours, and with a high efficiency and at a low cost.
摘要:
The present invention provides an Al-Si based sintered alloy of high strength and high ductility, a method for production thereof and use thereof. The alloy comprises 1 - 45 % of Si, 0.1 - 20 % of an element of Group IIIa, 0.01 - 5 % of at least one element of Groups IVa and Va, the balance of substantially Al. This alloy can further contain at least one of 0.01 - 5 % of Cu, 0.01 - 5 % of Mg, 2.0 % or less of Fe, 1.5 % or less of Mn and 1.5 % or less of Co and the oxygen content is reduced to 0.15 % or less by sintering under vacuum. The present invention is applied to automobile parts such as a piston and scroll compressors. The alloy has a tensile strength of about 392.4 N/mm² (40 kg/mm²) or higher and an elongation of 1.5 % or more at 150°C.
摘要:
The present invention provides an Al-Si based sintered alloy of high strength and high ductility, a method for production thereof and use thereof. The alloy comprises 1 - 45 % of Si, 0.1 - 20 % of an element of Group IIIa, 0.01 - 5 % of at least one element of Groups IVa and Va, the balance of substantially Al. This alloy can further contain at least one of 0.01 - 5 % of Cu, 0.01 - 5 % of Mg, 2.0 % or less of Fe, 1.5 % or less of Mn and 1.5 % or less of Co and the oxygen content is reduced to 0.15 % or less by sintering under vacuum. The present invention is applied to automobile parts such as a piston and scroll compressors. The alloy has a tensile strength of about 392.4 N/mm² (40 kg/mm²) or higher and an elongation of 1.5 % or more at 150°C.
摘要翻译:本发明提供一种高强度,高延展性的Al-Si系烧结合金,其制造方法及其应用。 该合金包括1-45%的Si,0.1-20%的IIIa族的元素,0.01-5%的至少一种元素组Ⅳa和Ⅴa,余量基本为Al。 该合金还可以含有0.01〜5%的Cu,0.01〜5%的Mg,2.0%以下的Fe,1.5%以下的Mn和1.5%以下的Co中的至少1种,氧含量减少为 在真空下烧结0.15%以下。 本发明适用于诸如活塞和涡旋式压缩机的汽车部件。 该合金的拉伸强度为约392.4N / mm 2(40kg / mm 2)以上,在150℃下的伸长率为1.5%以上。
摘要:
A lubricant composition comprising as a base oil one or more ester oils, alkylbenzene oils and mineral oils, and a glycidyl ether compound having at least two epoxy groups is miscible in hydrofluorocarbon and hydrochlorofluorocarbon refrigerants such as R134a, etc. as replacing refrigerants of R12 and provides a stable operation of refrigeration compressor for a long period of time without causing corrosion and wear of a sliding portion of the compressor.
摘要:
A refrigerating apparatus comprising a refrigeration cycle comprising at least a compressor, a condenser, a dryer, an expansion mechanism and an evaporator, a refrigerant composed mainly of a fluorocarbon type refrigerant containing no chlorine and having a critical temperature of 40 DEG C or higher, and a refrigerating machine oil comprising as base oil an ester oil of one or more fatty acids which contains at least two ester linkages in the molecule and has a viscosity at 40 DEG C of 2 to 70 cSt and a viscosity at 100 DEG C of 1 to 9 cSt.
摘要:
The object of the present invention is to provide sliding members having preferable lubrication and seizure resistance. Sliding members comprising the columnar texture (5) which is composed from at least one of metal nitrides, metal oxides, metal carbides, and metals on the base member, wherein the columnar texture (5) is composed of assemblies of fine columnar asperities (1), intervals (3) formed between the columnar asperities (1) are connected each other so as to form a net work, and gaseous, liquid, or solid lubricants are maintained in the intervals (3). The mutually connected intervals (3) in the columnar texture (5) are superior in filling and holding of lubricants, and the above described superiorities improve lubrication and seizure resistance and extend sliding life.
摘要:
The object of the present invention is to provide: high-reliability and long-life CO 2 refrigerant compressor-use bearings that uses bearing materials high in wear resistance and in baking resistance, and; such a compressor, air conditioner, refrigerator, and hot water supply machine that each employ these bearings, wherein the bearings are characterized in that each bearing comprises a cylindrically shaped member whose graphite-containing carbonaceous base material has pores impregnated with tin or with one type of metal selected from the IB group or the VIII group, except iron, or with an alloy based on these metals.
摘要:
A lubricant composition comprising as a base oil one or more ester oils, alkylbenzene oils and mineral oils, and a glycidyl ether compound having at least two epoxy groups is miscible in hydrofluorocarbon and hydrochlorofluorocarbon refrigerants such as R134a, etc. as replacing refrigerants of R12 and provides a stable operation of refrigeration compressor for a long period of time without causing corrosion and wear of a sliding portion of the compressor.