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不锈钢水轮机转轮体铸造工艺研究
Research on Casting of Stainless Steel Turbine Runner Hub
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- DOI:
- 作者:
- 童自谦 唐庆伟 周黎明
TONG Ziqin;TANG Qingwei;ZHOU Liming
- 作者单位:
- 杭州汽轮铸锻有限公司
Hangzhou Turbine Casting and Forging Co., Ltd., Hangzhou 311106, China
- 关键词:
- SCS1材质 铸造工艺 成分设计 热处理
SCSI material casting process optimal composition hest treatment
- 摘要:
- 介绍了一种材质为SCS1转轮体的铸造工艺方案,针对该材料易沿晶界析出δ铁素体的凝固特性,优化成分组合,设计合理Cr/Ni当量比,有效地避免铸件的裂缝、铸件脆性等缺陷。生产的铸件经力学性能及无损探伤检测,各项指标均达到东芝公司技术标准要求。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.