高强度油井管用钢专利技术的现状及发展趋势

概述了近年来对于高强度油井管用钢专利技术的重点研发领域-耐高温(≤650℃)、耐腐蚀(H₂S、CO₂、Cl^-介质)、抗挤毁(屈服强度380～1241 MPa)等关键技术的研究,介绍了最新高强度油井管用钢的研究和发展特点,生产典型高强度油井管用钢的关键技术。当前油井管用钢的开发趋势为通过低C、高合金和调质处理工艺生产具有耐高温、耐腐蚀、抗挤毁等复合特性的高强度焊管和无缝管。     

经济型抗CO2腐蚀专用油井管用钢成分设计分析

文章通过对油井管CO2腐蚀机理及影响因素进行分析,以各种化学元素在低Cr油井管用钢中的作用为基础,提出经济型抗CO2腐蚀专用油井管用钢成分设计思路,希望对抗CO2腐蚀专用油井管的开发有所助益。     

特钢将迎黄金发展期 中低端产品比重须降低

《规划》中描述的高性能钢材,主要指高品质特殊钢,以满足装备制造和重大工程需求为目标的高性能和专用特种优质钢材。根据规划要求,未来重点是发展核电大型锻件、特厚钢板、换热管、堆内构件用钢及其配套焊接材料,加快发展超临界锅炉用钢、特种耐腐蚀油井管及造船板、建筑桥梁用高强度钢筋和钢板,实现自主化。积极发展节镍型高性能不锈钢、高强汽车板、高标准轴承钢、齿轮钢、工模具钢、高温合金及耐蚀合金材料。     

海洋环境用耐蚀钢研发现状及发展趋势

介绍了国内外海洋环境用耐蚀钢的发展、研发现状及耐海水腐蚀钢国内外的差距,阐明海洋环境用耐腐蚀钢的发展趋势,指出加强我国南海区域高湿热、强辐射、高Cl-环境下腐蚀机理研究,推进适应我国南海海洋环境的耐腐蚀钢板的系列化是今后重点研究课题.     

国内外油井管钢中非金属夹杂物的对比分析

 为了提高国内油井管钢质量,采用扫描电镜对比了日本和国内油井管钢中夹杂物成分和形貌,统计了夹杂物尺寸分布、夹杂物间距和夹杂物分布等参数,基于FactSage热力学软件平衡凝固模型分析了冷却过程中夹杂物的演变过程,基于夹杂物碰撞数量平衡模型,讨论了油井管钢中夹杂物碰撞率。结果表明,日本油井管钢中夹杂物主要为CaS包裹的镁铝尖晶石,国内油井管钢中夹杂物主要为钙铝酸盐包裹的镁铝尖晶石夹杂物和纯镁铝尖晶石夹杂物。日本油井管钢夹杂物比国内油井管钢夹杂物数量少、尺寸小、分布更均匀。日本油井管钢中夹杂物数量密度达到7.5个/mm2,国内油井管钢中夹杂物数量密度达到28.3个/mm2。日本油井管钢中夹杂物最大尺寸不超过5 μm,国内油井管钢中夹杂物最大尺寸达到20 μm。FactSage计算冷却过程中夹杂物演变结果与试验结果吻合。国内油井管钢中夹杂物碰撞率比日本油井管钢中夹杂物的碰撞率高2个数量级。     

石油工业发展对低合金及微合金化石油管的要求与对策

石油天然气工业是低合金高强度钢、微合金化钢的主要用户之一。每年石油管(油井管和油气输送管)的投资约占石油工业总投资的1/5。 在石油工业的用钢总量中,油井管占40％以上。1949～1993年,我国陆上石油工业累计钻井14万口,进尺2.396×10~8m,消耗油井管1.28×10~7t,进口量占消耗量的90％,共用去外汇75亿美元。 油井管不属于一般的冶金产品,而是在低合金钢无缝管或棒材基础上经过深加工(压力加工、焊接、机     

高强度高Cr钢油井管数控加工技术分析

高强度高Cr钢油井管材料属于切削加工中的难加工材料,加工技术要求高.针对高强度高Cr钢油井管材料的特性提出了加工该类材料的刀具几何结构、刀具基体和涂层材料、优化选择的加工工艺参数、加工冷却及润滑等加工技术要求的具体解决方案,为高强度高Cr钢油井管数控加工技术研究,为进一步开发高强度高Cr钢油井管加工刀具提供了理论依据,同时提出选择切削液的合理方案.     

平端油井管在CPE机组上的试制

1 前言 无缝钢管今后几年的工作重点是:提高专用管的质量,开发新品种,尤其是在石油油井管和高压锅炉管两个需求量大,自给率低,技术难度大的能源用钢上。我厂立足长远结合CPE机组工艺特点和宝钢集团优势,提出开发了55级Φ88.9mm以下口径的平端油井管。 2 平端油井管主要技术要求 油井管必须严格按照美国石油协会SPEC SCT标准的规定要求进行组织生产。     

鞍钢集团

鞍钢集团核心钢铁产品包括汽车用钢、铁路用钢、石油石化用钢、家电板、船板、电工钢、集装箱板、机械用钢及精密钢管、核电管、模具钢和国防军工用钢等特殊用钢。建筑行业用钢鞍钢建筑行业用钢包括建筑结构用钢、桥梁用钢、高强镀锌板、高强镀铝锌板、高强彩涂板、高强预应力用钢、耐腐蚀钢等。鞍钢是国内首个生产桥梁用钢的企业.始终引领着国内桥梁用钢的     

河钢承钢优秀专业技术人才简介

正张明博,2017年6月毕业于北京科技大学、钢铁研究总院冶金工程专业,工学博士学位,现任公司技术专家、技术质量部冷轧板研究室主任,主要从事卷板新产品研发方面的工作。主持或参与研究开发了450MPa、550MPa级高强高耐腐蚀铁路箱用钢、C600QK-CM冷成型汽车桥壳用钢、C610JJ高强罐体用钢等高端品种10余项。其     

Alloying OCTG pipes with tungsten

The mechanical and corrosion performance of low alloy steel tubular goods depends on the microstructure obtained as a result of the combination of alloying elements and manufacturing process parameters. The basic design philosophy for the selection of the alloying elements is ruled by the balance between the steel cost and the material performance.Following this approach the alloying sequence for the manufacturing of tubular components in oil country tubular goods(OCTG) application is generally Mn,C,r and Mo,used as substitutional elements in a total added weight concentration around 1%up to 3%.Other elements such as B,Ti,Nb and V are applied as strengthening microalloying elements forming fine precipitates. A lack of experience is found related to the use of Tungsten(W) on OCTG applications,although W is also a substitutional element that belongs to group 6 of the periodic table together with Cr and Mo.On the other hand W is widely added for steel pipes working in high temperature services such as power plant boilers,where creep resistance is needed.It is also applied for tool steels enhancing the hardness,wear resistance and cutting performance. Taken into consideration the similarity between Cr,Mo and W and the applications where W has been proven it was decided to analyze the feasibility of using W as an alternative alloying element for some OCTG applications. Another factor that drives this study is the fact that W could be a cost effective substitute of Mo,depending on the alloy market price. This paper is based on literature review and experimental activity done on laboratory steels in which 0.1%Mo was replaced by 0.2%and 0.4%W.The different findings in regards with manufacturing process considerations, material performance and the possible use of W alloyed steel for OCTG applications are summarized. (1 ) Opposed to the susceptibility shown by low carbon with high Cr-W content,hot cracks are not expected in medium C steels(0.2%-0.3%) with W addition up to 1%. (2) Microporosity-related defects could form if W <<0.4%. (3) An improvement in the oxidation resistance for typical rolling furnace atmospheres in the temperature range 1 200 - 1 340℃was detected if Mo is substituted by W. (4) Theoretically W is one half less efficient in regards with hardenability. (5) No differences were found in the grain size after austenitizing in the temperature range 920 - 1 050℃, independently on Mo and W contents. (6) Tempering resistance was similar to Mo steels and there was no effect on the cementite shape factor,which affects the performance in sour environments. (7) Both pitting and general corrosion resistance are improved by W addition.But W effectiveness in improving pitting resistance is about one half. (8) The use of W as a substitute of Mo has been proven to be feasible and it could be applied for the manufacturing of N80 or L80 OCTG steel grades as per ISO 11960/API 5CT.     

Research and development of nickle-based OCTG used in severe sour oil and gas fields

With an alloy content as high as 80%or more,Ni-based OCTG is a strategic products related to the state energy security,mainly applied in the exploitation and development of sour gas fields with complicate geological formation,high temperature,high pressure and severe corrosive well conditions.Ni-based OCTG is regarded as the pipe product with most high technologies due to the complexity and great difficulty in manufacturing and rigorous requirements in quality control.In this paper,the technical features and quality requirements of Ni-based OCTG are summarized,and the quality and properties of the Ni-based OCTG products of Baosteel are introduced in detail.With the help of SEM,XPS and TEM,the corrosion mechanism of Nickle-based OCTG in the environments containing H₂S,CO₂,Cl^- and elementary suifur are also analyzed.     

低合金耐硫酸露点腐蚀钢的性能和应用

耐硫酸露点腐蚀钢是用于热交换部件的低合金钢。该钢主要分为两类:(1)以0.2%~0.5%Cu-＞0.010%S为基础,添加少量P、Sn、As、Sb、Se、Te等元素;(2)以Cu-Cr或Cu-Cr-Ni为基础的钢类,用于高温(130~160℃)、高浓度硫酸(80%~90%)的腐蚀环境。介绍了硫酸露点腐蚀环境的特点并讨论了合金元素对该低合金钢耐硫酸露点腐蚀的作用机制和国内外现有主要低合金耐硫酸露点钢的化学成分、力学性能和耐蚀性能。     

高强度汽车渗碳齿轮钢的发展及应用

渗碳齿轮钢是汽车用主要结构钢之一，国内主要汽车生产厂家的高强度齿轮钢材料一直使用不同国家多个牌号的渗碳钢。随着技术和应用的发展有必要开发新品种的高强度齿轮钢。分析了高强度汽车渗碳齿轮钢在国内外的发展及应用现状，并根据我国合金材料的特点展望了其发展趋势。     

Overview:Development of Clean Steel Production at Baosteel

The development of clean steel technology at Baosteel can be dated back to the first production of IF steels and pipeline steels in the early 1990s.Now the technology has gradually covered nearly the whole range of products.This progressive development is introduced in the overview including the levels of cleanliness for some steel grades at Baosteel.The technologies at different processes for the production of clean steel and the removal of some impurity elements in molten steel are also discussed.Suggestions are given on the future research and development of clean steel technology at Baosteel in the aim to keep a sustainable development,which should focus on the basic research,inclusion control and making efficient use of inclusions,as well as stable and reliable low-cost manufacturing technology,removal of harmful residual elements,and the expanding of the technology to stainless steels and special steels.     

国内外高强度船板钢的研发现状和发展

概述了近年来高强度船板钢的重点研发领域-低温韧性、优良耐腐蚀性、大线能量焊接性、疲劳性能等研究,介绍了最新高强度船板钢的研究和开发特点,生产典型高强度船板钢的关键技术.当前船板钢的开发趋势为通过低C、高Mn、复合微合金化、控轧控冷工艺和表面技术生产高强度、高韧性、耐腐蚀和制造工艺性能优良的船用钢板.     

国内外超细晶粒钢研究及发展趋势

概述了国内外超细晶粒钢的研究内容和发展趋势。介绍了400 MPa级碳素钢、800 MPa级高强度低合金钢和1500 MPa级长寿命低合金钢的最新研究成果和发展动态。     

Research and Practice of Production Technology for High Performance Low Alloy Steels in WISCO

The product system of high strength low alloy steels (HSLA) produced by Wuhan Iron and Steel (Group) Corporation (WISCO) was presented.A series of high performance structural steels have been developed for important construction projects around the world in different areas,such as bridge,pressure vessel,pipe line,shipbuilding,architecture,machinery and railway wagons.In order to promote the development of large heat input welding steel,high grade thick pipeline steel and long span bridge steel,a lot of advanced production technologies have been achieved through intensive investigation,such as the control of high purity,high homogenization and free defects in steel slabs,the rules of high melting point particle formation and distribution in micro and nano scale during steel production,and the TMCP technology for ultra low carbon bainite steel for medium and heavy plates.WISCO will carry on research and application of economic and weather-resistant steels and promote the developing and producing technologies of HSLA steel.     

攀钢低合金钢及微合金钢的开发与生产

概述了攀钢低合金钢及微合金钢开发与生产的思路、状况及进一步发展的设想。攀钢发展战略的重点是利用资源优势，发展低合金钢。