초록 ▼

Spiral parts, such as orbiting and fixed scroll plates having involute wraps, for use in scroll compressors, the parts having low coefficient of thermal expansion and high tensile strength and Young\s modulus, are formed by combining a self-lubricating power into aluminum raw material powder prior t

Spiral parts, such as orbiting and fixed scroll plates having involute wraps, for use in scroll compressors, the parts having low coefficient of thermal expansion and high tensile strength and Young\s modulus, are formed by combining a self-lubricating power into aluminum raw material powder prior to compression and forging. As an alternative to and in conjunction with the foregoing, temperatures during preform heating and in the die for forging are controlled to be in respective ranges of 300°to 500°C. and 150°to 500°C. Aluminum alloy fine powder preferably has a particle diameter no larger than 350 m2. The aluminum raw material powder may contain at least one element selected from the group consisting of Cu, Mg, and Si, or a kind of compound particles from the group consisting of oxides, nitrides, borides, and carbides of Fe, Al, Mg, Ti, Zr, and Si.

대표청구항 ▼

A method of producing spiral parts such as orbiting or fixed scroll plates with involute wraps by forging aluminum alloy powder, said method comprises the following steps: forming a preform from aluminum alloy powder having fine and homogeneous micro-structures as raw material by one of compressing

A method of producing spiral parts such as orbiting or fixed scroll plates with involute wraps by forging aluminum alloy powder, said method comprises the following steps: forming a preform from aluminum alloy powder having fine and homogeneous micro-structures as raw material by one of compressing with die assembly and cold isostatic pressing; and hot-forging said preform.