ISSN:1003-8620
CN:42-1243/TF
主管:中信泰富特钢集团股份有限公司
主办:大冶特殊钢有限公司
特殊钢 ›› 2008, Vol. 29 ›› Issue (5): 45-46.
• 工艺技术 • 上一篇 下一篇
郑桂芸,翟正龙,戈文英,张 伟
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作者简介:
Zheng Guiyun , Zhai Zhenglong , Ge Wenying , Zhang Wei
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摘要: 莱钢特钢厂用50 t电弧炉-LF(VD)工艺生产40MnB钢。结果表明,通过保持LF精炼渣的渣碱度3.0~5.5,喂Al线,并在LF精炼末期喂硅钙线,扒渣后50 Pa VD处理35~40 min,VD后喂Al线,再喂钛线,用铝皮包裹FeB20C0.5-A硼铁插入钢水中,软吹氩,硼铁中硼的回收率为65%~75%,钢中硼含量为0.001 8%~0.002 5%,钢中氧含量≤20×10-6,氮含量≤80×10-6。
关键词: 40MnB钢, EAF-LF(VD), 硼含量控制
Abstract: The steel 40MnB is produced by 50t EAF-LF(VD) process at Special Steel Plant,Laiwu Steel.Results showed that with insuring refining slag basicity 3.0~5.5,feeding Al wire,then feeding silicon-calcium wire in LF refining end phase,skimming and 50 Pa VD treated for 35~40 min,after VD feeding Al wire and titanium wire,and inserting ferroboron FeB20C0.5-A cladding of aluminium sheet into liquid steel and soft argon blowing,the yield of boron of ferroboron was 65%~75%,boron content in steel was 0.0018%~0.0025%,and oxygen content and nitrogen content in steel were respectively ≤20×10-6 and ≤80×10-6.
Key words: Steel 40MnB, EAF-LF(VD), Control of Boron Content
郑桂芸, 翟正龙, 戈文英, 张 伟. 40MnB合金钢硼含量的控制[J]. 特殊钢, 2008, 29(5): 45-46.
Zheng Guiyun , Zhai Zhenglong , Ge Wenying , Zhang Wei. Control of Boron Content in Alloy Steel 40MnB[J]. Special Steel, 2008, 29(5): 45-46.
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