公开(公告)号：EP2042613A4

公开(公告)日：2013-03-13

申请号：EP07767217

申请日：2007-06-20

申请人： NGK INSULATORS LTD ,  UNIV OSAKA

发明人： SAKAI TETSUO ,  MURAMATSU NAOKUNI ,  CHIBA KOKI ,  YAMAGAMI NAOKI

IPC分类号： C22C9/00 ,  B21B1/22 ,  B21B3/00 ,  C22C9/01 ,  C22C9/02 ,  C22C9/05 ,  C22C9/06 ,  C22C9/10 ,  C22F1/00 ,  C22F1/08

CPC分类号： C22C9/00 ,  C22C9/01 ,  C22C9/02 ,  C22C9/05 ,  C22C9/06 ,  C22C9/10 ,  C22F1/00 ,  C22F1/08

公开(公告)号：EP1870480A4

公开(公告)日：2009-07-08

申请号：EP06729693

申请日：2006-03-22

申请人： NGK INSULATORS LTD

发明人： SAKAI TAKU ,  MURAMATSU NAOKUNI ,  CHIBA KOKI

IPC分类号： C22C9/06 ,  C22F1/00 ,  C22F1/08

CPC分类号： C22C9/00 ,  C22C9/06 ,  C22F1/08

摘要： A method for producing a beryllium-copper containing at least Be and Cu, which comprises a solid solution forming step of holding a beryllium-copper in a solid solution forming temperature region wherein Be forms a solid solution with Cu, over a prescribed solid solution state holding time, and then cooling the beryllium-copper at a cooling rate which allows the retention of the state wherein Be forms a solid solution with Cu, a working step of applying a plastic strain to the beryllium-copper cooled in the solid solution forming step in plural installments in a working temperature range wherein Be forms no precipitate, and an age hardening step of holding the beryllium-copper having been subjected in the working step to the application of a plastic stress in a precipitation temperature region wherein Be forms a precipitate, over a prescribed age hardening time.