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that the bearing capacity of LACFST is reduced with the increase of eccentricity, slenderness ratio and the decrement of steel ratio. The calculation results of bearing capacity from the codes are lower.../FNu-FM/FMu correlation curves can be simplified as straight-line. Key words: bearing capacity; lightweight aggregate concrete filled steel tube; eccentric compression 土木工程结构朝着高耸,大跨,重载的方向发展,恒载在结构的受力中占......
),体积膨胀,进一步阻碍渣的渗透,使得形成的渗透层较薄.不像含碳耐火材料,碳氧化为气体,反应通道将继续留下. 关键词:MgO-Si_3N_4复合材料; 抗渣性; 显微结构; 钢包; MgO/Si_3N_4 composite; slag resistance; microstructure; steel ladle; [全文内容正在添加中] ......
承钢钒钛磁铁矿烧结配矿正交优化研究孙艳芹1,2,杨松陶2,吕庆2,李福民2(1.辽宁省沈阳市东北大学材料与冶金学院2.河北省唐山市河北理工大学冶金与能源学院)摘 要:目前承钢烧结生产主要以钒钛磁铁精矿为含铁物料,但其成品烧结矿强度低,低温还原粉化严重.针对这一问题,研究了承钢烧结原料烧结性能,烧结过程,烧结矿性能,得出海砂配比为0,黑山钒粉配比为14%,普通精粉配比为20%,钢渣配比为1%时为最优配矿,为承钢提高烧结矿质量提供了理论依据.关键词:配矿; 钒钛磁铁矿; 烧结矿强度; 烧结过程......
J. Cent. South Univ. (2020) 27: 311-324 DOI: https://doi.org/10.1007/s11771-020-4297-y Wear map for sliding wear behavior of Cu-15Ni-8Sn alloy against bearing steel under oil-lubricated condition... map Cite this article as: CHENG Jin-juan, GAN Xue-ping, LI Zhou, LEI Qian, ZHOU Ke-chao. Wear map for sliding wear behavior of Cu-15Ni-8Sn alloy against bearing steel under oil-lubricated condition [J......
低碳易切削钢LF炉精炼渣控制工艺余国松1,2,成国光1(1.北京市北京科技大学 冶金与生态工程学院2.浙江省杭州市杭州钢铁集团公司技术中心)摘 要:与还原渣相比,易切削钢LF精炼渣具有控氧,低脱硫率,低脱磷率的冶金功能特点.该类渣中须保持一定比例的FeO,MnO,低碱度,渣量适当并能充分吸附钢中A12O3,硅酸盐夹杂物.合适的精炼渣成分(质量分数,%)为:CaO 30~40,Al2O3 10~25,FeO 2~6,MnO 10~25,SiO2 10~20,MgO 4~8.该精炼渣的平均脱硫率为11.7%,平均L......
转炉提钒渣对镁碳砖的侵蚀王广恩1,王雨1,谢兵1,李新生1,郭戌1,李晓军1(1.重庆市重庆大学材料科学与工程学院)摘 要:在转炉提钒温度下,通过把镁碳砖试样浸入不同V2O3,FeO,TiO2,MnO,MgO含量的转炉提钒渣中,研究转炉提钒渣中氧化物含量的变化对镁碳砖侵蚀行为的影响,得出转炉提钒渣中氧化物含量与镁碳砖侵蚀速率的关系;使用SEM-EDS观察并分析侵蚀后镁碳砖的微观结构及物相组成,发现被C基质还原出来的金属铁颗粒;并基于试验结果对镁碳砖的损毁进行了讨论.关键词:转炉; 镁碳砖; 侵蚀;......
precipitation and growth of the rutile phase; 3) the selective separation of the rutile phase from impurities. 2 Experimental The slag from Panzhihua Iron and Steel Corporation was used in this study... into the phosphate glassy phase. 3.2 Selective precipitation and growth of Ti components in slag Based on studies on the growth and coarsening of the Ti components in Ti-bearing slag [13-16......
渣罐运输车在我国钢铁企业的应用及其结构特点 梁明武1,王荣辉1 (1.安阳钢铁公司,河南安阳市 455000) 摘要:介绍了渣罐运输车在我国钢铁企业的应用现状及其结构特点,指出框架式渣罐运输车具有结构简单,操作方便,安全性好等优点,在选择车型时可优先考虑. 关键词:钢厂; 渣罐运输车; 结构特点; Steel mill; Slag pot carrier; Structural characteristic; [全文内容正在添加中] ......
in the range of 20wt%-25wt% has high activity of Ca O(aCa O), with no deterioration of CS compared with conventional desulfurization slag. The measured LS between high-strength low-alloyed(HSLA) steel and slag with a basicity of about 3.5 and an Al2O3 content of about 20wt% and between HSLA steel and slag with a basicity of about 5.0 and an Al2O3 content of about 25wt% is 350 and 275, respectively......
大方坯轴承钢中心偏析的成因及预防措施何庆文1,2,王宝1,王福明2,刘青2(1.北京市北京科技大学 冶金与生态工程学院2.山东省莱芜市莱芜钢铁股份有限公司特殊钢厂)摘 要:对莱钢特钢厂连铸生产的大方坯轴承钢中心偏析的成因进行分析,研究了中间包钢水过热度等因素对中心偏析的影响,并对莱钢特钢厂的生产实践提出了预防措施.改善连铸轴承钢的中心偏析的方法和途径有:降低和稳定过热度,合理选择拉速,二冷强度和电磁搅拌参数等.关键词:轴承钢; 方坯; 中心偏析; 预防措施......