发明名称 |
MANUFACTURE OF EXTRUDING BILLET OF ALUMINUM ALLOY POWDER |
摘要 |
PURPOSE:To obtain an extruding billet of Al alloy powder with high productivity without using a lubricant by subjecting an Al alloy powder solidified by rapid cooling at a specific cooling velocity and above or a fine Al alloy powder made by spraying method to cold hydrostatic compacting at a prescribed compacting pressure and above. CONSTITUTION:The Al alloy powder solidified by rapid cooling at >=100 deg.C/sec cooling rate or the Al alloy powder having a grain size smaller than 42 mesh made by spraying method is subjected to cold hydrostatic compacting at a compacting pressure of >=4ton/cm<2>, by which the density ratio of the resulting green compact comes to >=85% even in case of a high alloy such as Al-20Si-5Fe alloy powder. Further, by increasing the green compact density ratio of the billet to >=80%, induction heating of the billet is enabled, so that the advantage of the speeding-up of the temp.-raise rate by means of a heating furnace or the like can be provided. |
申请公布号 |
JPS61281834(A) |
申请公布日期 |
1986.12.12 |
申请号 |
JP19850123814 |
申请日期 |
1985.06.07 |
申请人 |
SUMITOMO ELECTRIC IND LTD |
发明人 |
AKECHI KIYOAKI;KUROISHI ATSUSHI |
分类号 |
B22F3/04;B21C23/01;B22F3/20;B22F9/00;C22C1/04 |
主分类号 |
B22F3/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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