方圆坯连铸关键工艺技术研究

Abstract In the production of alloy steel and manufacturing of high intensity seamless steel pipe the square billet productiontechnology is essential mainly including the converter smelting refining outside the furnace vacuum degassing and square billet continuouscasting and other steps. These products demand higher quality. Due to the small continuous casting area surface fracture may happen incasting and cooling. In order to effectively solve such problems this paper studies the key technology of square billet continuous casting mainly including steel casting moulds cooling process etc.院方圆坯连铸 连铸工艺 表面质量 内部质量Key words square billet continuous casting continuous casting process surface quality internal quality中图分类号院TF777 文献标识码院A 文章编号院1006-4311（2014）06-0045-020 引言现在对合金钢的生产以及具有较高强度的无缝钢管的制造都需要运用到方圆坯的生产工艺，主要包括转炉冶炼 炉外精炼 真空脱气以及方圆坯连铸等步骤。这些产品对质量的要求较高，因其连铸的面积较小，故在进行浇灌 冷却时容易发生表面断裂等现象，故定制科学 合理的铸造工艺，解决其会发生的断裂等方面的问题是生产高质量方圆坯的关键步骤。本文将选取已投产的方圆坯连铸机作为研究对象，对方圆坯连铸关键工艺技术进行探究，现报告如下。