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• 产品工艺与质量控制(包括特钢) • 上一篇 下一篇
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摘要: 为提高2 000MPa级以上的超高强度钢生产效率,降低工序成本,形成批量产能,进行了EAF→LF→VD取代VIM-ESR工艺试验。试验结果表明:钢中氧、氮、氢质量分数总和小于50×10-6, A、B、C类夹杂物评级为0级,D类夹杂物评级不大于1.0级。成品钢板经淬火和低温回火后其强度大于2 100 MPa,伸长率大于7 %,与VIM-ESR工艺相当。新工艺的成本降低44 %以上,生产效率得到提高,适合低合金超高强度钢的规模化生产。
关键词: 超高强度钢, 电弧炉, 精炼, 工艺试验
Abstract: EAF→LF→VD technological test was conducted to replace VIM-ESR in order to increase the production efficiency and to reduce process cost of over 2 000 MPa grade ultrahigh strength low alloy steel for mass production capacity. The test result shows that the total mass fraction of O, N and H in steel is smaller than 50×10-6;the nonmetallic inclusion of A, B and C class is evaluated as 0 grade and class D inclusion is less than 1.0 grade. The tensile strength of finished steel plate is more than 2 100 MPa after quenching and low tempering and its elongation is greater than 7 %, which is equivalent to the result of using VIMESR technology. By using the new technology, the cost is reduced by over 44 % and the production efficiency is increased. The new technology is suitable for large-scale production of ultra-high strength low alloy steel.
Key words: ultra-high strength steel, electric arc furnace, refining, technological test
徐茂钧,庹开正,艾 陶,徐鸿昊. EAF→LF→VD工艺生产2 100 MPa级低合金超高强度钢试验[J]. 炼钢.
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链接本文: http://journal05.magtechjournal.com/Jwk3_gt/lg/CN/
http://journal05.magtechjournal.com/Jwk3_gt/lg/CN/Y2016/V32/I2/44