精轧

Based on stress analysis , the forming mechanism of Uneven Horizontal Plastic Strain defect and its relation with production parameters has been researched in details.

从受力分析入手，研究了横折缺陷的产生机理及生产因素与其对应关系，精轧板形不良引起残余应力不均是开卷出现横折的主要原因。

After introducing 56Nb steel, in order to meet performance requirement of 56Nb steel fish plate on the railroad rail, the production technique of 56Nb steel fish plate has been adopted under the factory equipment conditions: 450 kg steel ingot is prepared by melting in 8 t arc furnace and casting at 1 570-1 580℃ which is heated to 1 250-1 270 ℃, trimmed to 185 mm×195 mm bloom after rolling by 600 series 2-stand rolling mill; then rolled 15 times by 600 series 2-stand rolling mill when steel ing

介绍了56Nb钢后，根据铁道接头夹板的性能要求并结合厂方的设备状况制定了56Nb钢鱼尾板材料的生产工艺：用8 t电弧炉冶炼，于1 570～1 580℃下铸成450 kg钢锭；将钢锭加热到1 250～1 270℃，经600系列2机架轧机5道次轧制后修整成185 mm×195 mm方坯；再将钢坯加热到1 050～1 150℃，由600系列轧机（2机架）共15道次轧制，用350系列（3机架）精轧机经3道次精轧成60 kg/m的鱼尾板材料，终轧温度约900℃。

It was demonstrated that dynamic recrystallization followed by metadynamic recrystallization can occur in the final passes and then austenite grain is further refined under the reasonable rolling schedule.

结果表明，在合理的温度和压下条件下，应变累积可导致在精轧过程出现动态+亚动态再结晶行为，促进奥氏体晶粒的进一步细化。

The microstructure evolution, precipitation behavior of carbonitride as microalloying element and its effects on deformation induced ferrite transformation of mild steels with various Nb, V content were investigated on a Gleeble 1500 thermechanical simulator through multi-pass thermo-compression in the temperature range of 820~790℃ to simulate the finish rolling process of plates.

在Gleeble 1500热模拟机上，通过820~790℃温度范围内的多道次热压缩变形模拟了中厚板的精轧工艺，考察了不同铌、钒含量的低碳钢的组织演变过程、微合金元素的碳氮化物的析出行为和对形变诱导铁素体相变的影响。

H- section steel in the Section Steel Plant , rough rolled, directly enters the finishing mill train, causing some parts in the surface pressed in by reoxidation rolling scale, influencing the appearance of the steel.

型钢厂中型线的H型钢经粗轧后，直接进入精轧机组，造成表面部分二次氧化铁皮压入，影响了钢材的外观形象。

With the help of recommended abrasives and techniques, through the process of heating – roughly hot rolling – precisely hot rolling in a variety a machines, hot rolls can be shaped into high-precision aluminium belts, which shall better meet the growing needs of the PS baseboards for pots and the simifinished aluminium foil sheets, for there is a big market gap and high grade request for high-precision aluminium belts in the market.

三、建设规模：年产40万吨高精度铝板带热轧卷；工艺技术：采用国际先进的热轧生产技术，由铸锭经加热—热粗轧—多机架热精轧的生产工艺，配合引进的工艺技术磨具可满足制罐料 PS 板基、双零铝箔坯料等市场缺口大的高精度铝板带产品对热轧卷的质量要求；主要设备：包括铸锭铣床一台、推进式加热炉3台、2400mm1+4热连轧生产线一条、轧辊磨床2台（国外引进1台），预计引进设备需用外汇8000万美元。

Tool parts for high impact such as hammer cheeks, planishing and gripper cheeks. Paper cutting knives, tobacco cutting knives, roll segments.

承受高压力的工具部分，比如锤面、精轧夹面、制动器的制动面、裁纸刀、切烟刀、碾压齿轮。

With a long history and solid technical strength, our factory introduced advanced steel rolling equipments, and selected domestic and exported stainless steel materials. After hammering and planishing, top-grade strips and finished products of hinges are manufactured. In order to reach the quality standard of standardization and 0-defect, these years we keep introducing precision pressing equipments, automatic production equipments and related developing software to enhance the precision rate of the products and researching efficiency. To ensure better quality guarantee for the clients, we enlarge the production scales and enhance the grade of products. With the electrophoresis equipments and supporting electrophoresis paint exported from abroad, our products own the performance of anti-vibration, wearable, stainless, and anti-depigmentation.

我们建厂历史悠久，技术力量雄厚，同时引进先进轧钢设备，选用进口、国产不锈钢原材，经过锻打、精轧，制成优质带材，直至合页成品，一条龙生产，为达到标准化、零缺点的品质水准，历年来不断引进精密冲压设备与自动化生产设备及相关的产品开发软件，以提高产品精确度及生产研发效率；让客户享有更佳的品质保证，为扩大生产规模，提高产品档次，专门引进国外电泳生产设备、配套进口电泳原漆，从而使产品更具有抗震、耐磨，不生锈、不退色等特点。

According to the practical characteristics and parameters during hot finishing rolling process of aluminium alloy JP1235, a three-dimensional thermo-mechanical coupled elastic-plastic FEM model was established with the software Marc. And this model was used to simulate the rolling state of F1 stand without back tension. The lateral distribution of rolling force、contact friction force and other mechanic parameters were calculated. Meanwhile, simulated the rolling state considering the influence of mill tilt, and studied the distribution of the mechanics under this state, discussed the effect of mill tile on mechanic parameters and strip steering, which can provide some reference to steering control strategy.

根据JP1235铝合金板带热精轧过程的实际工艺特点和工艺参数，采用非线性有限元软件Marc，建立一个三维热力耦合弹塑性有限元模型，模拟了精轧机组第一机架（F1机架）失去后张力作用后的轧制状态，计算出轧制过程中轧制力、摩擦力等力能参数沿板宽方向上的分布情况，在此基础上，模拟初始轧辊倾斜影响下的轧制状态，并对该轧制状态下的力能参数分布情况进行研究，探讨轧辊倾斜对力能参数分布及跑偏规律的影响，为纠偏控制提供了一定的理论依据。

According to the characteristics of semi-endless rolling technology used in slab continuous casting and rolling line ,various measures of automatic width control in rough and finishing rolling were introduced and a new curve of short stroke control for rough rolling was particularly described.

针对薄板坯连铸连轧半无头轧制工艺的特点，简述了粗、精轧阶段的各种自动宽度控制和短行程控制的策略。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。