Research on Casting of Stainless Steel Turbine Runner Hub
Author of the article:TONG Ziqin;TANG Qingwei;ZHOU Liming
Author's Workplace：Hangzhou Turbine Casting and Forging Co., Ltd., Hangzhou 311106, China
Key Words：SCSI material casting process optimal composition hest treatment
Abstract：
A casting process of SCS1 runner hub is introduced. In view of the solidification character that δ ferrite easily precipitate along grain boundary, this process optimizes the composition and designs a reasonable equivalence ratio of Cr/Ni, which effectively avoids the defects such as cracks and brittleness of castings. Through mechanical property test and nondestructive testing, all the indexes produced by this casting process meet the technical standards of Toshiba.
