US 5,346,667 A · Method of manufacturing sintered aluminum alloy parts

Abstract

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 is sintered by heating via an electrical current conduction in a form of a plasma discharge and then the sintered body 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.

Claims9

Dependent claims

A method of manufacturing sintered aluminum alloy parts characterized by comprising the steps of:

compression molding an Al alloy powder solidified by a rapid cooling which powder consists essentially of 1.about.45 wt % of Si, 0.5.about.5 wt % of Ce, 0.5.about.5 wt % of Zr, 0.1.about.9 wt % of at least one of 0.1 to 1.0 of Fe and an 0.1 to 9 wt % of an element selected from the group consisting of Y, Cu, Mg, Mn, Zn, Li, Co, Cr, Ni, W, Nb and Mo, and remainder wt % of Al;
and
thereafter sintering the compression molded alloy powder by heating via an electric current conduction therethrough in the form of a plasma discharge while applying pressure thereto.

Dependencies are inferred from the claim text.

Facts

Application

07/953,018Filed 29 Sep 1992

Priority

JP 3-2526761 Oct 1991

Granted

13 Sep 1994

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

B22F 3/105
Sintering only: by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
B22F 3/14
Both compacting and sintering: simultaneously
C22C 1/0416
Light metal alloys: aluminium-based alloys
F04C 18/0246
Both members having co-operating elements in spiral form: details concerning the involute wraps or their base, e.g. geometry

Method of manufacturing sintered aluminum alloy parts

Life of this patent

Method of manufacturing sintered aluminum alloy parts

Life of this patent

Abstract

Claims9