真空碳脱氧纯净化技术在大型钢锭制备中的应用.pdfVIP

学兔兔 Sep．2013 铸 造 VOI．62 NO．9 FOUNDRY ·843 · 真空碳脱氧纯净化技术在大型钢锭制备中的应用 董晓亮，高元起，高 扬，庞宗旭 (鞍钢重型机械有限责任公司，辽宁鞍山1 14021) 摘要：通过控制主要脱氧元素si、A1含量，可以使钢液在真空条件下发生剧烈C、O反应，从而进一步降低大型钢 锭中的氧化物夹杂、气体含量，使其达到高纯净化效果。本研究利用真空碳脱氧生产纯净钢的优势，在不同锭型上 实施了双真空碳脱氧 (DVCD)冶炼、浇注工艺操作，最终制备出T[O】≤15x10 、[H]1xlO 加氢反应器、电站类锻 件产品用的高纯净大型钢锭。研究结果表明：真空碳脱氧作为钢液纯净化生产的一种手段，可以有效提高大型钢锭 的纯净度；进行真空碳脱氧工艺操作，中间包使用滑动水口控制系统同样能制备出高纯净度的大型钢锭；对于中碳 钢55A来说，只需控制钢液中Al含量，就可以实现很好的真空碳脱氧效果。 关键词：大型钢锭；双真空碳脱氧 (DVCD)；纯净化生产 中图分类号：TF769．4 文献标识码：A 文章编号：1001—4977(2013)09—0843—03 Application of Vacuum Carbon Deoxidation Purification Technologies to Manufacturing Large Steel Ingots DONG Xiao-liang，GAO Yuan—qi，GAO Yang，PANG Zong-XU (Angang Heavy Machine Co．，Ltd．，Anshan 1 14021，Liaoning，China) Abstra~：Under vacuum condition,intense reaction on C and O will occur in molten steel by controlling the content of main deoxidation elements Si．A1．The effects further reduce the content of oxide inclusions gas in large steel ingots and thus result in a high purified leve1．In this paper，a series ofhigh purified steel ingots，which serve as hydrogenation and electric power forging products，have been produced with the results of 『0]≤l 5× 10。6．[I-I]l~10 by double vacuum carbon deoxidation(DVCD)smelt andpouring steelmaking process．The results show that as a mean of molten steel purification，vacuum carbon deoxidation can effectively improve purlty degree of large steel ingots；vacuum casting system of tundish adopting amenable slide gate nozzle can also produce high purified large steel ingot in vacuum carbon deoxidation；an effective vacuum carbon deoxidation can be obta