入库钢板对齐度技术的探讨与改进

针对影响入库钢板对齐度的几个难题，从理论和实践进行了分析，并从四个方面提出了改进的方法。从而解决了这一长期影响产品垛放外观形象的难题。     

钢板入库吊具对产品质量的影响及其改造

中厚板入库所使用的专用吊具。从钢丝绳到起重钳。在吊运过程中均不同程度地形成钢板吊伤和吊弯缺陷。影响了钢板的外观质量,影响了我公司的经济效益。经过多次的改造,设计出了特制层钳吊具,消除了钢板吊伤、吊弯现象。解决了长期以来困扰中厚板质量的一大难题。     

济钢板材库房管理系统的构建

济钢根据延续跟踪产品的订单信息、合理准确的入库垛位推荐、迅速快捷的挑库、出库等设计目标，开发了板材库房管理系统。该系统实现了按客户、品种堆垛，自动推荐入库垛位，动态物流管理和钢板替代等功能，提高了作业效率，并从根本上杜绝了堵库、发错货等现象。     

磁力分板器在提升中厚板表面质量的运用

中板厂专用钢板经过垛板后需要转到二线精整分板探伤或剪机剪切钢板后才能检验入库。原精整线简易分板装置(机械分板)在分板时,都出现分板钩刮伤钢板上表及分板过程中最上面的钢板铲伤下面一块钢板的问题,导致钢板表面质量异议。通过设计制作磁力分板装置,避免钢板表面造成刮伤,提高了钢板表面质量。     

未切边下线问题钢板的原因分析及控制措施

分析了山钢集团莱芜分公司中厚板生产中未切边下线问题钢板产生的原因,并通过优化板型控制、钢板切边余量、切头剪粗分原则,减少了中厚板未切边下线问题钢板数量,解决了中间库问题钢板积压难题,降低了钢板倒垛消耗,有效提高了4 300 mm宽厚板生产线紧急合同兑现能力。     

厚钢板在冷热矫直的创新

在生产淬火和回火钢板时，即使是用最现代的生产线技术也无可避免会出现平整度缺陷和内应力。因此在热处理后同时进行矫直对减少内应力是必不可少的。德国蒂森克虏伯厂（ThyssenKrupp）采用AndritzSundwig新开发的精密矫直机已解决了此难题，所生产的钢板达到不可多得的质量水平。     

SS400钢化学成分与力学性能关系的回归分析

鞍钢宽厚板厂在SS400钢板的实际生产中，存在着钢板性能合格率低的问题。针对过去生产的SS400钢板，探讨了钢的化学成分对钢板屈服强度、抗拉强度及延伸率的影响，得出影响三者的显著因素为含碳量和钢板厚度。并将钢板的化学成分与力学性能进行线性回归分析，确定了用化学成分预测钢板力学性能指标的定量关系，可用于实际生产的指导。     

热轧薄板自动切割取样系统设计

论文通过采用等离子切割加智能自动控制的方法，结合现场实际情况，设计并制造了一套能够在两分钟时间内完成剪切厚14～20nm、宽1600nm钢板的自动切割系统，解决了热切厚板取样的难题，满足了生产的需要。     

基于数字图像处理的钢板号识别系统设计

针对江苏沙钢集团入库中厚板钢板号自动识别的需要,设计了一套基于数字图像处理的钢板号识别系统。结合现场特殊环境,采用基于棋盘格的字符倾斜校正方法;考虑钢板字符区域具有特殊标志,使用模板匹配进行字符粗定位;二值化过程中采用局部阈值和全局阈值相比较的方法实现目标与背景相分离;根据钢板号首尾字符固定的特点,通过模板匹配进行板号位置精确定位;字符分割过程采用结合先验知识的垂直投影方法达到字符准确分割的目的;最后采用基于卷积神经网络(CNN)的字符分类方法完成钢板号的最终识别。实践表明,该系统可以适应现场24 h生产环境,已为企业带来显著经济效益。     

订单模式的库房管理系统设计与应用

本文以济南钢铁集团中厚板厂库房管理系统为例,探讨如何构建基于订单的库房管理系统.该系统实现了按客户、品种堆垛、自动推荐入库垛位、动态物流管理和钢板替代等功能,提高了作业效率,从根本上杜绝了堵库、发错货等传统库房管理存在的问题.     

1450连退机组快冷段风机平衡控制改进实践

为提高连退机组冷轧钢板的表面质量,防止因钢板上下表面冷却压力失衡,导致钢板擦划伤或撕裂,对连退机组快冷段的冷却风机控制进行了主从平衡控制改进。实践表明,改进后,实现了冷轧钢板在连退退火处理过程中稳定、有效运行,没有再出现快冷喷嘴擦划钢板表面等质量问题。     

热带海洋大气环境冷轧钢板锈蚀规律

 海洋大气环境中影响冷轧钢板锈蚀的主要因素为温度、相对湿度和Cl-浓度。为了研究热带海洋大气环境下环境因素对冷轧钢板在仓库中储存起锈时间的影响，以温度、相对湿度和Cl-浓度等环境因素为变量，在室内模拟装置进行了冷轧钢板锈蚀观测试验；同时，在钢铁厂冷轧成品库房进行了冷轧钢板挂样锈蚀观测试验。结果表明，室内模拟试验和现场试验结果一致性很好，可以通过室内模拟试验研究冷轧钢板在库房中的锈蚀特征和规律；温度为20～30 ℃时，冷轧钢板起锈时间与大气环境相对湿度之间呈线性关系；温度为35～45 ℃时，冷轧钢板起锈时间与大气环境相对湿度之间呈指数关系；冷轧钢板起锈的临界相对湿度随温度升高而降低。     

Profile and Flatness Control Technology With a Long Shifting Stroke on Wide Non-Oriented Electrical Steel Sheets

 In order to solve the difficult profile and flatness control problem of wide non-oriented electrical steel sheets, the factors such as the relationship between strip crown control and strip width, the relationship between the maximum wearing value of work roll and the number of a rolling campaign and the wear contour change of work roll were analyzed on the basis of industrial test. Through analyzing the rolling process characteristics of non-oriented electrical steel sheets, the ASR (asymmetry self-compensating work rolls) shape control technology and its roll shifting strategy of the wider non-oriented electrical steel sheets was proposed and developed. When the technology was applied, the number of the wide non-oriented electrical steel (23 mm×1280 mm) in one rolling campaign rose from 40 coils of the trial production to 70 coils of the industrial production, the ratio of the measured strip crown less than 45 μm was increased from 500% to 949%, and the ratio of the measured strip crown more than 60 μm was decreased from 200% to 07%.     

Influence of Surface Roughness of Galvanized Steel Sheet on Self-lubricated Coating

Three different thicknesses of self-lubricated coatings were prepared on galvanized steel sheets with different surface roughness(Ra).Performances of the coatings were evaluated by various laboratory tests.Scanning electron microscopy(SEM),atomic force microscope(AFM),neutral salt spraying test(NSST),reciprocating friction and wear test were taken in order to characterize the coatings.Results show that the self-lubricated coating has good corrosion resistance and lubricating property.In 0.857-1.629μm of Ravalue,the relationship between friction coefficients of the self-lubricated steel sheets and the surface roughness of the galvanized steel sheets likes a parabolic curve,and has a peak value of friction coefficient in certain range of Ra.Affected by the hereditary surface topography of the galvanized steel sheet,dents on the surface of self-lubricated steel become deeper and larger with the increase of the surface roughness of the galvanized steel sheets.The influence of the surface roughness of the galvanized steel sheet on the corrosion resistance of the self-lubricated coating steel is similar to that on friction coefficient of self-lubricated coatings,like a parabolic curve.     

轧制高强钢用新型冷轧工作辊的开发及其应用

针对高强钢、超高强钢的轧制生产需求,通过合金成分设计和制造工艺开发,研制出轧制高强钢用新型冷轧工作辊,工作层的耐磨性能以及辊体的强韧性得到显著改善。现场使用结果表明：单周期平均轧制吨位提高了约40%,单次下机磨削量降低了约7%,使用性能优于进口的同类型冷轧工作辊。新型冷轧工作辊适用于汽车用高强钢的轧制生产,硅钢、不锈钢及其他难轧板材等也有广泛的应用前景。     

包钢产品市场状况优劣分析及应对措施

近期钢铁企业面临的市场竞争环境发生了巨大的改变,客户对钢材的品种、规格需求越来越多样化.这种局面下,钢铁企业对用户需求的预测越来越困难.为了提高对客户需求的响应能力,减少库存,节约成本,钢铁企业必须对其产品在市场上的综合状况有一个全面地了解,并积极采取措施对所出现的问题加以应对.     

高强度钢板在汽车车身上的应用及问题对策

主要介绍高强度钢板使用量增加背景、已开发或正在开发的种类、高强度钢板在汽车车身上的应用以及高强度钢板使用中存在的主要问题及其对策等。     

Development of vibration-damping resins for room-temperature application

Copolymers of vinyl acetate, n-butyl acrylate, VeoVa 10, and acrylic acid were prepared in order to develop new high vibration-damping resins for vibration-damping composite steel sheets for room-temperature application. The characteristics of the resins were affected by the properties of each monomer used. Vinyl acetate and n-butyl acrylate were known to have good vibration-damping properties around room temperatures. We found that VeoVa 10 had a pronounced effect on the lowering of the melt viscosity. Acrylic acid was added to improve the adhesion performance with steel sheets. The composite steel sheets produced using these resins exhibited a high loss factor of approximately 0.3 to 0.4 at 20 °C to 30 °C and 250 Hz. The melt viscosity was in the 5 to 20 Pa · s range at 180 °C. This paper is based on a presentation made in the symposium “Acoustic/Vibration Damping Materials” presented during the TMS Fall Meeting, Indianapolis, IN, October 1–5, 1989, under the auspices of the TMS Physical Metallurgy Committee.     

CSP热轧及冷轧工艺对深冲板组织和性能的影响

以某钢厂CSP工艺生产的SPHE热轧板为研究对象,在实验室条件下,研究了CSP卷取温度对SPHE冷轧深冲板组织和性能的影响。研究结果表明,CSP工艺生产的SPHE热轧板的卷取温度应控制在560-565℃;冷轧工艺相同时,基于CSP工艺生产的SPHE深冲板的退火温度越高,再结晶进行越充分,晶粒尺寸越大,对性能越有利,尤其是560-565℃卷取的SPHE板在700℃退火时已可以获得很好的深冲性能。     

Influence of hydrodynamic lubricant entrainment on friction effects in cold rolling

The cold rolling process is decisively influenced by the mechanisms of lubricant supply to the deformation zone. Rolling tests with thin aluminium sheets were performed based on a theoretical model of the hydrodynamic entrainment of lubricant. Aluminium was used as a model material for steel in order to get a soft rolling stock to enlarge the hydrodynamic effect. The rolling conditions were chosen so that changes in friction conditions could definitely be traced back to a hydrodynamic effect in the inlet zone. The changes in friction conditions were demonstrated by significant rolling parameters, dimensionless similarity numbers, and alterations of the surface structures of the rolled test sheets. The conclusions indicate some tribological problems in cold rolling.