【摘 要】
:
Ferritic stainless steel is being paid attention by steel industry and downstream users relying on its good over-all properties and low cost.With improvement of metallurgical technology and researchin
【机 构】
:
CITIC-CBMM Microalloying Technology Center XinyuanNanlu,Chaoyang,Beijing 100004,China
【出 处】
:
第十届中国钢铁年会暨第六届宝钢学术年会
论文部分内容阅读
Ferritic stainless steel is being paid attention by steel industry and downstream users relying on its good over-all properties and low cost.With improvement of metallurgical technology and researching on fundamental theory,further development is obtained in properties optimization and quality stabilization of modern ferritic stainless steel,its marked feature are super purification and Nb/Nb-Ti stabilization.Nowadays,modern ferritic stainless steel is used widely in auto industry,home appliances,solar water heater,construction and decoration fields.The paper focuses on the effect mechanism of Nb technology on modern ferritic stainless steel and summarizes its application progress in typical downstream industries in China.Nb has an important role in the development of the ferritic stainless steel family since it adds value by improving final properties such as formability,weldability and corrosion resistance.home appliance and solar water heater are more open to ferritic stainless steel applications since they are volume driven and more cost sensitive.Nb-bearing modern ferritic stainless steels will have a bright application future in home appliance,solar water heater and other fields.
其他文献
以RH精炼前进行钙处理的某低碳铝镇静钢为试验钢种,利用ASPEX扫描电镜(SEM+EDS)对RH精炼处理过程中1μm以上的高熔点CaO-Al2O3夹杂物的形貌、成分、数量和尺寸进行系统研究.结果表明,钙处理工艺将钢中Al2O3夹杂物有效的变性为含有少量MgO的高熔点的CaO-Al2O3类夹杂物,经过RH真空循环,钢中总氧从RH进站的98.7ppm降低至32.5ppm,钢中各尺寸范围的夹杂物均能得到
Selective chlorination and evaporation reactions could become one of the applicable methods for the treatment of electric arc furnace dust containing considerable amount of zinc and lead.In this study
为了探究Ti添加导致热浸镀55wt.%Al-Zn-Si镀层锌花减小的机理,本文通过实验对比观察55wt.%Al-Zn-Si和55wt.%Al-Zn-Si-Ti镀层合金层的形貌和各物相的成分.为了减少杂质元素如V、Ce的影响和便于析出相的检测,本文利用高纯的原料锭配制了55wt.%Al-Zn-1.6Si-1Fe-0.7Ti合金,研究Fe和Ti过饱和后的析出相种类.SEM和EDS的结果表明,55wt.
采用数值模拟方法基于stovall线性堆积模型计算了不同临界粒径,不同q值的混合颗粒紧密堆积时的堆积密度;在此基础上,以微孔刚玉作为骨料,白刚玉粉、α-Al2O3微粉、镁砂细粉、MgO微粉等作为基质,调整基质粒度组成,分别制备了q值为0.25、0.28、0.31和0.34的轻量Al2O3-MgO质浇注料,分析了不同q值下材料的常温性能、孔径分布和显微结构,并对不同q值下的轻量Al2O3-MgO质浇
本文重点介绍了日照钢铁连续酸洗镀锌生产线的工艺特点.两条生产线分别由奥地利安德里茨公司和意大利达涅利公司设计,采用了国际上最先进的生产工艺和关键设备.日照钢铁连续酸洗镀锌生产线的工艺和装备达到了国际先进水平,具备了一定的“以热代冷”能力.本文还系统阐述了连续酸洗镀锌生产线相对于传统镀锌的技术优势和成本优势,并指出了产线运行、生产和质量管理的关键在于“稳定”.随着当今钢铁行业竞争不断深化,人们对环保
Gontermann-Peipers GmbH(GP)Germany developed a new,high alloyed steel grade(Hot working steel)for the manufacturing of back-up rolls in Skin Pass Mills.The advanced GP double pour casting processes pr
本文在凝固压力为0.5MPa、0.85MPa、1.2MPa的条件下,利用25kg加压感应炉,在尺寸不同的铸型中,制备出了高氮奥氏体不锈钢P2000(氮含量约0.9%),并结合Thermo-Calc热力计算软件和低倍组织检测手段,研究了压力对高氮不锈钢宏观组织的影响规律;结果表明,增大压力和冷却速率能够有效避免铸锭内气孔的形成,加压可增强液相的补缩能力,明显减少中心疏松深度和面积,提高铸锭致密度,此
回顾了首钢总公司迁顺产线、京唐产线、首秦产线近五年来的炼钢技术创新进展.在过去的五年以来,优化了KR铁水脱硫的生产工艺参数,理顺了“KR+转炉+RH+连铸”流程生产低硫钢种([%S]≤0.0030)工艺;围绕转炉“全三脱”的特点进行高效低成本脱磷、控制增氮的工艺研究;开发了SGRS工艺,转炉炼钢石灰、轻烧白云石消耗降低30%以上;针对不同钢种的使用要求,采用相应的措施,使钢中的非金属夹杂物得到良好
随着钢铁工业节能减排的深入,烧结过程中低温余热资源的回收技术成为研究的热点.针对钢铁工业中烧结矿冷却和显热提取及再利用过程,依据热力学第一定律和第二定律,在冷却机、余热锅炉和汽轮发电机组耦合响应机制的基础上,建立余热资源回收率和吨矿余热发电量模型,选定三个工况计算了吨矿极限发电量和理论发电量,分析了影响烧结余热发电负荷的因素,给出了烧结余热发电负荷提升的方法,并基于场协同原理及梯级利用原则提出了烧
Non-blast-furnace ironmaking,or non-coking ironmaking,is one of the most concerned focuses in iron and steel industry,particularly in China.Although it covers a great number of various processes for b