共查询到20条相似文献,搜索用时 125 毫秒
1.
2.
φ110 ~ φ280 mm锅炉管用热轧圆钢12Cr1MoVG(/%:0.08 ~0.15C、0.17 ~0.35Si、0.40 ~0.70Mn、≤0.015P、≤0.010S、0.90 ~ 1.20Cr、0.25 ~0.35Mo、0.15 ~0.30V、≤0.015[Alt])的生产工艺流程为120 t顶底复吹转炉-LF-RH-CC-轧制.通过控制铁水[As]、[Sn]、[Sb]、[Pb]、[Bi],控制转炉终点[C]0.04% ~0.08%、[P]≤0.010%、[S]≤0.010%,出钢过程铝铁脱氧,钢包喂铝线控制[Alt]≤0.015%并用复合精炼渣和少量铝丸终脱氧,控制中间包钢水过热度20 ~35℃,全程保护浇注等工艺措施,使试验钢的[As]+[Sn]+[Sb]+[Pb]+[Bi]≤0.029%、[P]≤0.011%、[S]≤0.008%、[Alt]≤0.011%,各类夹杂物级别均≤1.0,满足用户的技术要求. 相似文献
3.
针对攀钢钒提钒炼钢厂IF钢生产工艺及装备特点,分析影响IF钢RH-MFB脱碳效果的原因,通过建立吹氧脱碳工艺模型、优化铝加热及驱动气体模式等工艺技术措施,并不断完善和优化工艺操作,实现了IF钢成品[C]≤30×10~(-6)合格率达到90%以上,为提高产品市场竞争力打下坚实基础。 相似文献
4.
5.
6.
分析了高级别管线钢中碳磷硫对钢材质量的影响,通过对钢液中[C]、[P]和[Fe]选择性氧化的热力学理论分析,计算出转炉终点温度在1 640℃时,当碳低于0.06%时,继续供氧,氧气将优先与[P]反应生成(P2O5),能够实现熔池的深脱磷;但当碳低于0.04%时,继续供氧,氧气将直接与[Fe]反应为主,造成钢水过氧化,甚至发生回磷现象。通过优化拉碳工艺、优化铁水预处理脱硫工艺、控制转炉回硫、LF渣系等,实现了高级别管线钢成品w[C]≤0.05%,w[P]≤0.012%,w[S]≤0.001 5%的稳定生产工艺。 相似文献
7.
8.
9.
10.
11.
板带钢轧制新技术及品种研发进展 总被引:3,自引:0,他引:3
近年来,中国钢铁行业生产经营形势变得越来越严峻,面临着产能过剩、市场萎缩、产品价格下滑、原材料成本居高不下等种种困境。依靠技术设备升级降低生产成本,以及加强品种研发提高产品附加值,已成为钢铁企业一种必然的战略选择。介绍了几种有发展潜力的板带钢轧制新技术,包括无头轧制、异步轧制、薄带连铸和中厚板组织控制技术等,并以海洋工程用钢、能源用钢和现代交通运输用钢为重点介绍了目前钢铁材料品种研发的新进展,认为只有依靠技术进步才能推动钢铁行业继续向前发展。 相似文献
12.
《钢铁研究学报(英文版)》2011,(Z2):52-58
As the market demand for clean steel increased,a number of new technologies for clean steel production have been developed in some domestic and foreign steelmaking plants.Based on the existing equipments and technical conditions in the No.1 steelmaking plant of Ansteel,a series of clean steel technologies have been integrated including single bay duplex-dephosphorization in steelmaking control technology,high efficiency desulfurization technology,the control technology for nitrogen content during the whole process,the control technology for hydrogen content in VD,and the systematic control technology for oxygen content.A series of process for all kinds of ultra-low phosphorus,ultra-low sulfur and relative low level of inclusions have been designed in clean steel production.This process include hot metal desulfurization and slag-off,single bay duplex-dephosphorization in BOF,molten steel slag-off,LF processing,VD processing,and continuous casting with protection,then a stable,low-cost and large-scale production process has been formed.Applying this integrative technology,the sum of 5 major elements including phosphorus,sulfur,oxygen,nitrogen,hydrogen is less than 80×10-6 in high alloy steel scale production,and the industrial applications for clean steel technology have been achieved. 相似文献
13.
《Baosteel Technical Research》2010,(Z1):87
Because special steels are the basic materials for industrialization,a national R&D program on special steel technology for high quality products have been granted to promote the special steel production and applications since 2008.Since then,great progresses have been achieved on ferritic stainless steel sheets,heat resistance steel pipes and tubes,microalloyed forging steel bars,and mould steel forgings for hot working. The ratio of ferritic stainless steel sheets produced by TISCO and Baosteel has been promoted through technology innovations and increased 42%and 48 in 2009 respectively.439M steel sheets have been used to exhaust system,and 444 steel sheets have been applied to kitchen and architecture.The production technologies for heat resistance steel pipes and tubes(T/P92,S3043,S31042 steels) have been developed in Baosteel and Pansteel to meet the market requirements.Meanwhile,the round bloom technology has been initiated in Xingcheng Steel.The new technologies for microalloyed forging steels,low cost steel bar,and tailored steel and components,were proposed by CISRI based on the understanding of precise chemical composition and segregation control.And the applications of microalloyed forging steel bars have been promoted remarkably.The researchers have developed high quality mould steel technologies,heavy section forgings of 718 steel,high premium H13 steel blocks and large diameter mandrels used for seamless pipe rolling.The technology innovations of the program could lead to the progress of production technology in special steel sheets,pipes,bars and forgings,and meet the demands from market.For the moment,it is actually believed that there still strong requirements for the technology innovations on special steels. 相似文献
14.
15.
16.
轴承钢产品质量与生产工艺研究 总被引:3,自引:0,他引:3
本文系统地总结了国内外轴承钢质量与生产工艺技术,分析比较了各种轴承钢生产工艺方法。采用超纯净钢生产工艺和改善凝固偏析,是控制轴承钢质量的技术核心,而采用转炉工艺和连铸技术,可以明显地降低轴承钢生产成本,应在国内大力推广。 相似文献
17.
18.
钢铁材料研发的技术进展 总被引:2,自引:0,他引:2
中国的钢铁材料研发活动越来越活跃,研发领域不断拓展,先进钢铁材料不断涌现。钢铁研究总院结构材料研究所致力于先进钢铁材料的研发,取得了显著的成绩。本文综述近年来的各个钢铁材料领域研发的技术进展,包括了碳素结构钢、高强度低合金钢、合金结构钢、超高强度钢、轴承钢、不锈钢及耐蚀合金、耐热钢及合金、工模具钢,以及相关技术等。通过持续的技术研发活动,钢铁材料已经和必将不断发展和更新,形成了以“高性能、低成本、易加工、高精度、绿色化”为特征的先进钢铁材料。 相似文献
19.
中间包冶金技术的发展 总被引:14,自引:4,他引:10
综合介绍了国内外连铸中间包冶金的发展,主要包括防止钢水再污染技术,促使钢水中夹杂物去除的技术及相关技术的发展情况,为我国的中间包冶金提供借鉴。 相似文献