公开(公告)号：US5259435A

公开(公告)日：1993-11-09

申请号：US620855

申请日：1990-12-03

Applicant: Hirohisa Miura ,  Masaoki Hashimoto ,  Mamoru Okamoto ,  Shoichi Tsuchiya ,  Wataru Yagi ,  Masami Ishii

Inventor： Hirohisa Miura ,  Masaoki Hashimoto ,  Mamoru Okamoto ,  Shoichi Tsuchiya ,  Wataru Yagi ,  Masami Ishii

IPC: C22C29/00 ,  B22D19/14 ,  C22C1/08 ,  C22C1/10 ,  C22C29/12 ,  C22C32/00 ,  B22D7/04 ,  B32B5/16

CPC classification number: B22D19/14 ,  Y10T428/252 ,  Y10T428/257 ,  Y10T428/26 ,  Y10T428/2996

Abstract: A method of forming a metallic composite product having a specific gravity no greater than 1.8 and a thermal expansion no greater than 16.times.10.sup.-6 .degree. C. in a preheated mold. The portion of the mold between a cavity and the gate has a stainless steel wire gauge for retaining particles. The mold is filled with screened fly ash, glass, hollow spheres having a particle size in the range of 50 to 200 micrometers and a globularness of at least 90%, which has been preheated to the same temperature as the mold. Molten aluminum alloy is injected into the mold at a pressure in the range of from 40 to 80 kgf cm.sup.2 at the gate and at a flow velocity in the range of 0.08 to 0.20 m/second.

Abstract translation: 在预热的模具中形成比重不大于1.8且热膨胀不大于16×10 -6℃的金属复合产品的方法。 模具在腔和门之间的部分具有用于保持颗粒的不锈钢丝规。 模具中填充有已经预热到与模具相同温度的筛选的粉煤灰，玻璃，中空球体，粒径在50-200微米范围内，球状度至少为90％。 熔融铝合金在浇口处以40至80kgfcm 2的压力和0.08至0.20m /秒范围内的流速注入模具中。