30Cr2Ni4MoV大型钢锭质量控制  

QUALITY CONTROL OF LARGE INGOT 30Cr2Ni4MoV

作　　者：刘义 黄明 肖连华 Liu Yi;Huang Ming;Xiao Lianhua(Science and Technology Department of HBIS Group,Shijiazhuang,Hebei,050000;Tangsteel Group Heavy Machinery & Equipment Co.Ltd.,Tangshan,Hebei,063000)

机构地区：[1]河钢集团有限公司科技创新部,河北石家庄050000 [2]唐山钢铁集团重机装备有限公司,河北唐山063036

出　　处：《河北冶金》2020年第10期76-78,共3页Hebei Metallurgy

摘　　要：采用EBT+LF+VD+VC四联工艺开发了汽轮机转子用钢30Cr2Ni4MoV,详细介绍了各工序的控制要点。通过硅铝钙钡复合脱氧剂脱氧、喂入钙线进行夹杂物变质处理、真空浇注等措施,30Cr2Ni4MoV钢的化学成分、残余元素含量、气体含量、夹杂物及内部缺陷等各项指标均较好,满足了用户的要求,实现了超纯净度钢的生产。Adopting EBT+LF+VD+VC quadruple process,30Cr2Ni4MoV steel for steam turbine rotor was developed.The control points of each process were introduced in detail.The indexes of chemical composition,residual element content,gas content,inclusions and internal defects of 30Cr2Ni4MoV steel are good by deoxidizing with Si-Al-Ca-Ba compound deoxidizer,feeding calcium wire for inclusion modification,vacuum casting,etc.,which can meet the requirements of users and realize the production of ultra purity steel.

关 键 词：超纯净钢 EBT+LF+VD+VC 复合脱氧 变质处理 真空浇注 夹杂物 

分 类 号：TG316[金属学及工艺—金属压力加工]