Formation mechanism of shrinkage and large inclusions of a 70 t 12Cr2Mo1 heavy steel ingot

• 作 者: Liu Hongwei Fu Paixian Kang Xi
• 机 构: ShenyangNationalLaboratoryforMaterialsScience
• 出 处: 中国铸造：英文版
• 发表日期: 2014年1期
• 基金项目: This research is financially supported by the Program of National Technological Cooperation and Communication （Project 2010 DFR 70640）, and Chinese National S＆T Major Project （2011ZX06004-016）.

Shrinkage cavities and large inclusions are serious internal defects of heavy steel ingot and influence the quality of subsequent forgings. In order to remove these two types of defects, a 70 t 12Cr2Mo1 heavy ingot fabricated by vacuum carbon de-oxidation