薄板厂210 t RH脱气工艺研究

特殊钢 ›› 2012, Vol. 33 ›› Issue (6): 16-17.

薄板厂210 t RH脱气工艺研究

陈爱梅

包钢钢联股份有限公司技术中心，包头014010

收稿日期:2012-05-28 出版日期:2012-12-01 发布日期:2022-09-27
作者简介:陈爱梅(1967-),女，正高级工程师,1989年鞍山科技大学毕业，炼钢工艺和质量研究。

A Study on 210 t RH Vacuum Degas Process at a Sheet Works

Chen Aimei

Technical Center, Baotou Steel (Group) Corp, Baotou 014010

Received:2012-05-28 Published:2012-12-01 Online:2022-09-27

摘要/Abstract

摘要： 通过210t顶底复吹转炉-LF-RH-宽厚板坯连铸流程对Q345E、Q345GJC和BQ550D等钢种进行45炉次RH脱气工艺试验,研究了RH真空处理对钢水脱氢、脱氧和脱氮效果的影响。得出,在RH真空度≤270Pa,环吹氩流量1200～1500L/min,高真空时间≥10min,钢中氢含量可达到≤2×10^-6;当高真空时间为16min时,钢中氢、氧、氮含量平均分别为2.0×10^-6、13.2×10^-6和41×10^-6。

Abstract: RH vacuum degas process test on 45 heats Q345E, Q345GJC and BQ550D etc. steel grades has been carried out by 210 t top and bottom combined blown converter-LF-RH-wide heavy slab CC flow sheet, and the effect of RH vacuum treatment on liquid dehydrogenation, deoxidization and denitriding is studied. It is obtained that with RH vacuum ≤270 Pa, circle blowing argon rate 1 200 〜1 500 L/min, high vacuum treatment for ≥ 10 min the hydrogen content in steel is ≤2 x 10^-6 , and with high vacuum treatment for 16 min the hydrogen, oxygen and nitrogen content in steel are respectively 2 x 10^-6, 13. 2 x 10^-6 and 41.0 x 10^-6.

陈爱梅. 薄板厂210 t RH脱气工艺研究[J]. 特殊钢, 2012, 33(6): 16-17.

Chen Aimei. A Study on 210 t RH Vacuum Degas Process at a Sheet Works[J]. Special Steel, 2012, 33(6): 16-17.