专利名称：MANUFACTURE OF EXTRUSION MATERIAL HAVING EXCELLENT HOLLOW-EXTRUDING
CHARACTERISTICS
踏实肯干发明人：UNO TERUO,HIRANO SEIICHI
申请号：JP14788
申请日：19880105
公开号：JPH01177341A
五棵松上品折扣店公开日：
儿童色彩画
黄骨鱼焖豆腐
七夕主题
19890713
广德太极洞
专利内容由知识产权出版社提供
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摘要：PURPOSE:To manufacture the title material having high strength by casting the alloy having the specific compsn. consisting of Li, Cu, Mg and Al, thereafter subjecting it to a specific homogenizing treatment and then to hollow-extruding at specific temp. CONSTITUTION:The alloy contg., as esntial components, 1.5-4.0% Li, 0.2-3.0% Cu and 0.2-2.0% Mg, furthermore contg. at need one or more kinds among 0.05-0.30% Zr, 0.05-0.30% Cr, 0.05-1.0% Mn and 0.05-0.30% V and the balance consisting of Al with inevitable impurities is cast. Said ingot is then subjected to a homogenizing treatment for 2-48hr at 480-550 deg.C. The ingot after said treatment is subjected to hollow-extruding at 450-550 deg.C, by which the Al alloy extrusion material having excellent hollow-extruding characteristics and high specific elastic modulus can be obtd.
申请人：SUMITOMO LIGHT METAL IND LTD
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