摘要
介绍了EAF+LF+VOD工艺冶炼三峡水轮机叶片用ZG06Cr13Ni4Mo马氏体不锈钢的过程。EAF采用优质原材料有效控制P含量;LF调整成分、温度、脱硫;VOD精炼控制吹氧真空度、吹氧强度、氧枪高度、氩气流量等工艺参数,并结合氧势图和废气温度准确判断停吹氧时间。结果表明,产品最终[C]=0.033%,VOD过程降C速率达到每分钟0.01%,Cr回收率达到93%,气体含量也达到了较低水平,[N]=34×10-4%,[H]=1.7×10-4%,[O]=36×10-4%。
The present paper introduced the smelting process of ZGCr13Ni4Mo stainless steel for San-xia hydraulic turbine blades by EAF ＋ LF＋ VOD methods. High grade row material was selected for EAF which effectively controlling P content and adjusting composition, temperature and desulfurizing for LF and controlling the parameter of VOD process such as the vacuum before oxygen blowing, intensity of oxygen flow, the height of oxygen gun and argon flow. According to oxygen potential diagram and temperature of exhaust gas, accurately determined the time to stop oxygen blowing. It was showed that the final product gained satisfied results： [C] = 0. 033%, speed of C descent reached 0.01% per min in VOD, recovery of Or reached 93%, relatively low gas content level e.g. [N]=34 PPm,[H]= 1.7× 10-4%,[O]=36× 10-4%.
出处
《铸造技术》
CAS
北大核心
2010年第6期695-697,共3页
Foundry Technology
