提高板坯内部质量的方法

• 作 者: 马续香
• 出 处: 连铸
• 发表日期: 1995年02期
• 关键词: 冶金长度 连铸板坯 中心偏析 伯利恒 注速 最大宽度 辊缝 内裂 两台 开发部

美国伯利恒钢铁公司雀点厂有两台单流板坯连铸机,其年产能力为290万吨。该厂生产100%的连铸板坯,其厚度90％以上为250mm,其余为200mm;板坯宽度为1070～2180mm,平均约为1650mm,计划于1994年最大宽度达到2290mm。连铸机注速为0.8～1.6m/min,平均为1.3m/min,冶金长度为35.4m。铸机投产初期生产的板坯易产生内裂、中心偏析和中心分层等内部缺陷。伯利恒钢铁公司研究开发部雀点厂经过分析发现内部

Bethlehem Steel Spit factory in the United States has two single-stream slab caster with an annual capacity of 2.9 million tons. The plant produces 100% of continuous casting slabs, the thickness of more than 90% for the 250mm, the remaining 200mm; slab width of 1070 ~ 2180mm, an average of about 1650mm, planned in 1994, the maximum width of 2290mm. Continuous casting machine injection speed 0.8 ~ 1.6m / min, with an average of 1.3m / min, metallurgical length of 35.4m. Casting machine initial production of slab easy to produce internal cracks, center segregation and center delamination and other internal defects. Bethlehem Iron and Steel Research and Development Department Finch Factory found after the analysis of internal