摘要
基于电炉流程工艺的特点,发挥电炉钢N含量高的优势,在钢中加入VN合金进行V微合金化处理,控制钢水中[0]小于0．025％,[S]小于0．005％,采取提高VN合金收得率的工艺措施,使V的收得率在90％以上,加入VN合金N的收得率在60％～70％,充分发挥了V晶粒细化和沉淀强化的作用,成功开发了V微合金化屈服强度550 MPa级的高强度热轧钢板。
Based on the research for metallurgical characteristics of EAF and utilizing the feature of high N content in EAF steelmaking, a V micro- alloyed high strength hot rolling steel plate with 550 MPa yield strength has been successfully developed by using VN alloy in the V microalloying treatment. The aim is that： [O] ≤0.025%, [S] ≤0.005%. The yield of V element is above 90% and that of N element is 60% - 70% by applying the technical measures of increasing VN alloy yield in the EAF steelmaking, this is helpful to the grain refinement and precipitation strengthening effects of V in steel.
出处
《钢铁钒钛》
CAS
2006年第4期29-33,共5页
Iron Steel Vanadium Titanium
关键词
电炉炼钢
钒氮合金
V微合金化
高强钢
electric furnace steelmaking
VN alloy
V micro - alloying
high strength steel
