ISSN：1003-8620

CN：42-1243/TF

Governed by: CITIC Pacific Special Steel Group Co., LTD

Sponsored by: Daye Special Steel Co., LTD.

Special Steel ›› 2007, Vol. 28 ›› Issue (3): 53-55.

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Effect of LF(VD)Refining Process on Control of Sulphur and Sulphide in Gear Steel 28MnCr5

Li  Guozhong1,2,Wang  Fuming1，Cao  Hongfu2   

  1. 1 Metallurgical and Ecological Engineering,University of Science and Technology,Beijing 100083;
    2 Jiangyin Xingcheng Special Steel Co Ltd,Jiangyin 214429
  • Received:2006-12-25 Online:2007-05-01 Published:2023-02-03

LF(VD)精炼工艺对控制28MnCr5齿轮钢中硫和硫化物的影响

李国忠1,2，王福明1，曹红福2   

  1. 1北京科技大学冶金与生态工程学院，北京100083;
    2江阴兴澄特种钢铁有限公司，江阴214429
  • 作者简介:李国忠(1967-),男，高级工程师，《特殊钢》编委。

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Abstract: The basicity of refining slag,feeding sulphur wire and deoxidation process for a 45 t LF on control of sulphur,oxide content    and sulphide in steel 28MnCr5(0.25～0.30C,0.60～0.80Mn,0.020～0.035S,0.80～1.00Cr)  have been tested. Results showed that as feeding sulphur wire with basicity of LF refining slag-2.8~5. 1,the yield of sulphur after VD was up to 80%～90% and oxide rating in steel≤1.5;and feeding suitable amount of CaSi wire was available to improve the morphology of sulphide in steel.

Key words: 45 t LF,Refining Process,Gear Steel 28MnCr5,Sulphide

摘要： 试验了45 t LF精炼渣的碱度、喂硫线和脱氧工艺对28MnCr5钢(％:0.25～0.30C、0.60～0.80Mn、0.020～0.035S、0.80～1.00Cr)硫含量的控制、氧化物含量和钢中硫化物的影响。结果表明,LF精炼渣碱度控制在2.8～5.1喂硫线,VD后硫的回收率达80％～90％;钢中氧化物级别≤1.5级;精炼结束喂适量CaSi线可改善钢中硫化物的形貌。

关键词: 45tLF, 精炼工艺, 28MnCr5齿轮钢, 硫化物

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