专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH0352753A COMPLEX CASTING METHOD 失效
公开(公告)号：JPH0352753A
公开(公告)日：1991-03-06
申请号：JP19000889
申请日：1989-07-20
申请人： KOMATSU HAUMETTO KK
发明人： YOSHIDA DAISAKU , TANAKA TAKESHI , FUKUMOTO TETSUYA
IPC分类号： B22D19/00 , B22D25/06 , B22D27/04
摘要： PURPOSE:To effectively utilize material strength being suitable to the necessary characteristics in each part of a casting product and to improve creep character istic, fatigue strength and toughness by combining merits of respective casting method by using two or more kinds of the casting methods. CONSTITUTION:In each part in the integrated machining member, while manufac turing each part with the casting methods for giving the characteristics matching to need at each part in these, the process for integrating by complexing these is executed. Therefore, in the case of exemplifying a turbine wheel for small size turbine, a blade part corresponding to a second member planted may be cast with unidirectional solidification in order to utilize this alloy characteristic. Further, a disk part corresponding to a first member may be cast as making fine crystal with rotary solidifying method in order to satisfy the characteristic to be needed. In this result, the blade part has metallurgical structure with the crystal grown in stress direction and improved in creep resistance and the disk part can have uniform characteristic to the whole direction.

IPRDB