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): 41-42.

• 工艺技术 • 上一篇    下一篇

减少轴承钢和齿轮钢中大颗粒点状氧化物夹杂(Ds)的工艺实践

刘绍康1,黄  煌2   

  1. 江阴兴澄特种钢铁有限公司花山分厂三炼钢(1),质量检验中心(2),江阴 214432
  • 收稿日期:2008-03-19 出版日期:2008-10-01 发布日期:2023-01-05
  • 作者简介:刘绍康(1974-),男,工程师,1996年中南科技大学毕业,从事特殊钢生产工艺和质量管理

Practice of Process for Decreasing Large Size Globular Oxides Inclusion (Ds) in Bearing Steel and Gear Steel

Liu Shaokang1 , Huang Huang2   

  1. 1 No3 Steelmaking Plant and 2 Quality Examination Center,Jiangyin Xingcheng Special Steel Co Ltd,Jiangyin 214432
  • Received:2008-03-19 Published:2008-10-01 Online:2023-01-05

摘要: 研究了100 t EBT DC电弧炉-100 t LF/VD-300 mm×340 mm连铸坯生产GCr15轴承钢、齿轮钢时,电弧炉终点[C]、精炼渣、吹氩工艺、Als、保护浇铸、钢水温度及耐火材料等工艺参数对钢中Ds出现几率的影响。实践表明,采用较高的终点[C](≥0.10%)、精炼渣碱度2.5~3.5、真空后弱搅拌时间≥15 min、Als控制在0.011%~0.020%、良好的保护浇铸以及选用优质耐火材料等措施,可降低钢中大颗粒点状夹杂的出现几率。

关键词: 精炼, 轴承钢, 汽车齿轮钢, 点状氧化物夹杂

Abstract: The effect of process parameters such as arc furnace end [C],refining slag,argon blowing,Als,shielding casting,liquid steel temperature and refractory material etc on occurred probability of Ds in CCr15 bearing steel and gear steel produced by 100t EBT DC EAF- 100 t LF/VD-300 mm × 340 mm billet process has been studied. The practice showed that with using higher end[C] (≥0. 10%C),refining slag basicity 2.5~3.5,≥15 min soft argon stirring after vacuum treatment,controlling Als 0.011%~0.020%,favorable shielding casting and using excellent refractory materials,it was available to decrease large size globular oxides inclusions in steel.

Key words: Refining, Bearing Steel, Gear Steels for Car, Globular Type Oxides