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碳含量及连铸工艺参数对宽厚板坯结晶器热流的影响

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Indexed by:期刊论文

Date of Publication:2014-08-01

Journal:特殊钢

Included Journals:PKU

Volume:35

Issue:4

Page Number:37-40

ISSN No.:1003-8620

Key Words:0.07%~0.18%C钢;宽厚板坯;碳含量;连铸工艺;结晶器热流;在线检测

Abstract:对钢厂0.07% ~0.18%C钢220~320mm×1800~2700 mm宽厚板的连铸过程进行了一年的在线检测与统计,研究了不同碳含量的钢种的拉速(0.65~1.2m/min),钢水过热度(13~35℃),结晶器进水温度(27~35℃)和结晶器液位(775 ~810 mm)等工艺参数对结晶器铜板热流的影响.结果表明,浇铸220 mm板坯的结晶器热流随拉速增加而上升,但拉速>1.05 m/min时热流不再增大;对具有包晶反应的钢种,宽面与窄面热流随钢液过热度的增加而增大,但进水温度升高,热流降低;受包晶相变收缩的影响,浇铸0.13%C钢时结晶器热流最低.

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