摘要
针对核电压力容器用SA-508-3-1钢的组织与性能特点,分析出冶炼的难点,通过对冶炼工艺的深入研究,提出了采用EBT初炼—LF精炼—真空脱气—真空浇注的冶炼工艺方案,按该工艺方案成功冶炼浇注了核电SA-508-3-1钢锭。经过锻造及热处理等工序后,锻件性能达到核电压力容器锻件要求,并获得国家核安全局认证。
The SA-508-3-1 ingot steel smelting process of EBT smehing-LF refining-VD-VC has been put forward by analyzing the difficulties of smelting process based on the characteristics of steel structure and property requirement for nuclear plant reactor pressure vessel. The nuclear power SA-508-3-1 ingot steel has been produced successfully ac- cording to this steel smelting process. The property of the forgings has reached the requirement of NRPV forgings after forging and heat treatment processes which helped CITIC HEAVY INDUSTRIES to be certified by National Nuclear Safety Administration.
出处
《大型铸锻件》
2012年第6期24-26,共3页
Heavy Casting and Forging