超轻汽车车体用钢热镀锌的研究及应用现状

综述了超轻汽车车体用钢热镀锌的研究及应用现状，重点介绍了烘烤硬化钢、高强度IF钢、双相钢、相变诱导塑性钢等热镀锌的生产工艺和性能影响因素。     

武钢高强度汽车用钢板开发与应用

汽车更轻和更安全是人们一直努力追求的目标，采用高强度钢板能为实现这个目标做出贡献。经过多年研发，武钢已开发出一系列的高强度汽车用钢板，使用这些钢板能使汽车减重并提高汽车的安全性。为满足汽车工业的需要，武钢今后将开发更高强度的汽车用钢板。     

厚规格高强度钢板探伤不合原因分析

针对某钢厂生产30 mm以上规格高强度钢板时突然出现大批量超声波探伤不合格的情况，利用金相显微镜、电子显微镜及电子探针等手段对钢板探伤不合部位进行了观察、分析。结果表明，钢板厚度中心位置硫化物、氧化物夹杂物聚集引起的微裂纹是造成探伤不合的主要原因。根据分析检测结果，提出了相应的工艺改进措施。     

高强度压力容器用钢生产工艺的研制

采用Nb＋V复合微合金化、直接淬火＋回火工艺,工业性试制了类似07MnCrMoVR压力容器调质高强度用钢的XG62钢板,化学成分和力学性能完全符合GB19189-2003标准要求,其工艺具有推广应用价值。     

神户制钢开发新型高强度汽车用钢板

神户制钢和奥钢联正在联手开发弯曲性、焊接性和涂装性都比较好的超高强度汽车用钢板 ,其抗拉强度为 80 - 1 0 0kg mm2 ,以符合汽车制造厂实现车体轻型化从而达到降低油耗和减少大气污染的目的。预计明年 3月开始生产供应。此外 ,神户制钢还和日系汽车制造厂合作 ,共同开发汽车内和顶部骨架用的高强度钢板 ,以便在保证车体轻型化的同时确保汽车的安全性。预计 2年后提供给汽车制造厂使用神户制钢开发新型高强度汽车用钢板     

高强度钢板专利分析及知识产权策略

介绍了高强度钢板应用在汽车领域的主要优点,对世界范围内高强度钢板领域的相关专利进行分析研究,分析了日本新日铁高强汽车钢板的专利,研究了知识产权策略,并给我国钢铁企业提出了一些建议。     

冷却工艺对低焊接裂纹敏感性钢组织的影响

采用弛豫控制析出+加速冷却（RPC+ACC）和超快速冷却+加速冷却（UFC+ACC)2种不同冷却工艺试制低裂纹敏感性钢板，结合显微硬度、SEM及TEM技术分析了冷却工艺对显微组织及力学性能的影响。结果表明：RPC+ACC工艺试样的屈服强度和抗拉强度比UFC+ACC工艺分别要高170 MPa和65 MPa，而且维持了相同的冲击韧性。获得含有大量位错胞的板条贝氏体组织，且不同尺寸的板条贝氏体被亚结构或位错墙分割，出现相互交错排列是RPC+ACC冷却工艺提高强度的主要机制。     

汽车用冷轧超低碳烘烤硬化钢板的组织性能与析出

实验研究了汽车用冷轧超低碳烘烤硬化钢板的成分、热轧冷轧及退火工艺对钢组织性能的影响规律,并分析了冷轧后连续退火和罩式退火不同条件下钢中析出第2相粒子形态和钢板的织构变化。     

汽车用高强度钢板的开发应用和发展前景

介绍了高强度钢板的开发进程和在汽车工业中的应用情况。     

汽车用先进高强度钢的开发及应用进展

 先进的高强度钢在汽车减重、节能、提高安全性、降低排放等方面展现出了广阔的前景，在新一代汽车伙伴计划、超轻钢车身——先进概念车等项目上得到了应用和推广。简述了先进高强度汽车用钢板的最新开发和应用进展情况。     

鞍钢高品质汽车板的研制开发

介绍了鞍钢目前已经开发出的以IF钢为代表的深冲钢系列品种,以烘烤硬化钢为代表的高强深冲钢系列品种,以DP、TRIP钢为代表的先进高强钢系列品种,以05板为代表的高表面质量的冷轧板系列品种,并根据用户的个性需求,开发出了具有不同特性的冷轧钢板。今后,鞍钢将通过新一代汽车用钢的开发和应用技术研究,为汽车行业的轻量化进程提供有力的技术支持。     

低环境负荷的汽车用薄钢板和硅钢片的发展动向

概述了汽车用薄钢板和硅钢片的现状与未来展望。指出对于薄钢板，应该尽量降低因提高强度而导致的成形性的恶化，同时论述了获得有利于车体轻量化的现代高强度钢所适宜的显微组织及其制备的物理冶金方法。讨论了混合型汽车电机铁芯要求的电磁性能，认为降低高频区的铁损非常重要，并可以通过钢的纯净化和织构的适宜控制得以实现。     

国外900MPa级TWIP钢专利技术简述

本文根据安赛乐米塔尔和蒂森克虏伯世界著名钢铁公司2008年在世界知识产权组织（WIPO）申请公开的典型专利技术，概述了汽车用结构件、加强件或外挂件等用途的900MPa级孪晶诱发塑性钢，即TWIP钢的最新研发动态，特别是详细介绍了生产高强度、高塑性以及具有优良涂镀性的开发技术方案。开发钢可以以热轧板、冷轧板及镀层板形式交货。     

Effects of Finish Rolling Temperature on Microstructure and Mechanical Properties of Ferritic-Rolled P-Added High Strength Interstitial-Free Steel Sheets

  The steels were rolled at 3 different finishing temperatures. The mechanical properties were tested by tensile tests. The results show that as finish rolling temperature decreases from 620 to 560 ℃ in ferrite region, the deep drawability of ferritic rolled P added high strength IF steels is improved, and r value rises from 114 to 137. Finish rolling temperature (FT) has less influence on other mechanical properties, such as yield strength, tensile strength and elongation. Microstructures of hot rolled and annealed steel sheets and precipitates of annealed steel sheets were also analyzed.     

鞍钢先进高强汽车用钢的研制开发

介绍了鞍钢先进高强汽车用钢开发研制情况,包括以980 MPa级DP钢、TRIP钢、TWIP钢和QP钢为代表的热轧、冷轧和热镀锌先进高强钢系列产品,以及鞍钢开发的先进高强钢热镀锌生产技术,并对鞍钢先进高强汽车钢未来的发展方向进行了展望。     

The development of surface treatment products and technologies of steel sheets in Baosteel

The surface treatment technology can improve the corrosion resistance of steel sheets and increase the value of steel application.The surface treated steel sheets in Baosteel include zinc galvanized steel sheets,sin galvanized steel sheets,chromium galvanized steel sheets,and colour coating steel sheets with the application in the area from construction to automobiles,appliance,package,etc.The development,application and manufacturing technique of these products have become the core competition power of Baosteel. The article reviews the developments of surface treated steel sheets and surface treatment technologies in Baosteel in 10 years,especially hot dip galvanized high strength steel products used in vehicles.The article also looks forward into further developments of surface treatment steel products and technologies in Baosteel,which will focus on:①the new products of hot dip galvanized advanced high strength steels;②more environmental friendly products or functional coating products;③the development of surface treatment technologies to meet the requirement of higher surface quality in the marcket;④new type of surface treatment and coating technologies.     

The production and practice of cold-rolled steel sheets for automobile

Shougang Group has carried out a strategic structure adjustment in order to realize the promise of Chinese people to the Olympic Games.Automotive sheets are chosen as a type of strategic product and an engine to upgrade enterprise management,technology and operation to reach the top international level during the transition from long products to steel sheets in Shougang Group.Since 2006,Shougang Group has made an elaborate preparation on steel sheet culture,production line construction,technology import,pilot plant and talent reserve.It lays the foundation for the development of automotive sheets.The developing history of cold rolled automotive sheets is reviewed and the research and development of cold rolled automotive sheets, tackling key problem of defect on surface and the latest progress of automotive sheets construction are described in this paper.The main contents were given as follows:①The products of automotive sheets realize zero breakthrough in Shougang Group.Monthly output was 300 ton in January,2009 and it increased to 48 000 ton in June,2010.The ratio of IF steel sheets increases to 70%from 40%.The proportion of outside panel in automotive sheets occupys more than 15%.②A high emulational pilot plant is used as a product developing platform to develop successfully automotive sheets with 1 000 MPa and below.It guarantees that the industrial development of DP and TRIP sheets gets success at a time.It covers continuous annealing sheets with tensile strength≤780 MPa and galvanizing sheets with tensile strength≤590 MPa.③Individual design is used to meet special requirement of customer.Shougang owns 23 inner brands of LCAK and IF steels.It insures that the grades of yield strength cover whole range from 120 to 270 MPa.It keeps the stabilization of steel performance by means of chemical composition control and high accuracy rolling technology.For example,the strength of soft steel fluctuates within±15 MPa.④The steel sheets with surface grade O5 are produced steadily by solving forming striation of IF steel,grain coarse on surface,edge curling skin and mountains - and - waters painting defects.⑤The safeguard mechanism on quality of products is improved steadily and the output of automotive sheets and outside panel increases greatly by building consistency quality management system、information - system and customer service system.     

汽车紧固件用钢的发展动向

简要介绍了汽车紧固件用钢的性能要求,冶炼及轧制的特点;对相关的洁净螺栓钢、微合金非调质钢、免退火钢、硼钢、耐延迟断裂高强钢的现状和发展动向进行阐述;指明了实施汽车紧固件用钢国产化的努力方向。     

首钢热轧酸洗先进高强钢的开发与进展

介绍了首钢热轧酸洗先进高强钢的开发与进展。根据客户的使用要求，结合生产设备，首钢研发了双相钢、高扩孔钢、复相钢、相变诱导塑性钢等系列高强钢。分析了双相钢、高扩孔钢、复相钢以及相变诱导塑性钢等产品的化学成分和力学性能，并利用金相显微镜和扫描电镜等手段对微观组织特征进行了描述。首钢热轧酸洗先进高强钢因出色的力学性能已经在汽车控制臂和纵梁等零件上得到广泛应用，未来将在乘用车减重和安全等方面发挥更大作用。     

冷轧变形量对304不锈钢力学性能的影响

 研究304奥氏体不锈钢薄板的硬度随冷轧变形量的变化规律,为奥氏体不锈钢薄板工业生产提供指导。同时,采用金相显微镜、维氏硬度测量、X-射线衍射仪和透射电镜研究了不同变形量冷轧对304不锈钢显微组织和机械性能的影响。在室温对0.5mm厚退火板材进行冷轧,使冷轧变形量从10%增加到52%。结果表明,形变诱发马氏体相变是导致304不锈钢冷轧时产生加工硬化的主要原因,冷轧可以显著提高钢的强度和硬度。当冷轧变形至40%时,304不锈钢的维氏硬度是未变形时的2.2倍,屈服强度、抗拉强度分别增大到未变形时的4.2倍（880MPa）和1.8倍（1312MPa）。