首页 | 本学科首页   官方微博 | 高级检索  
     

低合金高强钢中非金属夹杂物的改性
引用本文:李强, 王新华, 李海波, 黄福祥, 朱国森, 姜敏, 王万军. 低合金高强钢中非金属夹杂物的改性[J]. 工程科学学报, 2012, 34(11): 1262-1267. DOI: 10.13374/j.issn1001-053x.2012.11.013
作者姓名:李强  王新华  李海波  黄福祥  朱国森  姜敏  王万军
作者单位:1. 北京科技大学冶金与生态工程学院, 北京 100083;
摘    要:借助热力学软件Thermo-Calc和ASPEX自动扫描电镜等分析手段,研究了低合金高强钢精炼过程渣-钢反应和钙处理对夹杂物改性行为的影响.通过提高炉渣碱度和w(CaO)/w(Al2O3)值以及降低炉渣氧化性等措施,钙处理前钢中Al2O3夹杂物转变为靠近1600℃液相区的CaO-MgO-Al2O3复合夹杂物和少量的MgO·Al2O3尖晶石.在渣-钢反应对Al2O3部分变性的基础上,钙线喂入量每炉由优化前的800 m减少到300 m仍能达到夹杂物改性的目的.

关 键 词:高强钢  合金钢  精炼  夹杂物  改性
收稿时间:2011-07-23

Modification of non-metallic inclusions in high-strength low-alloy steel
LI Qiang, WANG Xin-hua, LI Hai-bo, HUANG Fu-xiang, ZHU Guo-sen, JIANG Min, WANG Wan-jun. Modification of non-metallic inclusions in high-strength low-alloy steel[J]. Chinese Journal of Engineering, 2012, 34(11): 1262-1267. DOI: 10.13374/j.issn1001-053x.2012.11.013
Authors:LI Qiang  WANG Xin-hua  LI Hai-bo  HUANG Fu-xiang  ZHU Guo-sen  JIANG Min  WANG Wan-jun
Affiliation:1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;2. Technology Institute of Capital Steel, Beijing 100039, China
Abstract:The influences of slag-metal reaction and calcium treatment on inclusion modification in high-strength low-alloy steel were studied by means of Thermo-Calc thermodynamic software and ASPEX automated scanning electron microscope. The results of industrial trials show that by increasing the basicity, reducibility and w(CaO)/w(Al2O3) of slag, Al2O3 inclusions are partially modified to CaO-MgO-Al2O3 complex inclusions nearby the liquid phase zone at 1 600℃, as well as a few MgO·Al2O3 spinel. On the basis of this change, the purpose of inclusion modification is still achieved with the addition of CaSi-wire decreasing from 800 m to 300 m for a heat. 
Keywords:high strength steel  alloy steel  refining  inclusions  modification
本文献已被 万方数据 等数据库收录!
点击此处可从《工程科学学报》浏览原始摘要信息
点击此处可从《工程科学学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号