MANUFACTURE OF BRAKE DISC MEMBER FOR ROLLING STOCK

摘要

PROBLEM TO BE SOLVED: To provide near net-shaped forging and favorable mechanical workability while reducing weight. SOLUTION: Mixed powder 3 that one or more kind of hard particle of 5-30 wt.% having mean particle size of 1-20μm and Vickers hardness of 500 or more is added to aluminum alloy powder is solidified by hot press. At the same time of solidification, the mixed powder 3 is joined with the other aluminum alloy 2. While weight is reduced by aluminum alloy, near net shape forging and favorable mechanical workability can be obtained in comparison with an aluminum composite member simple substance.