轧

And then, according the FEM numerical simulation result, the coefficient value of the modified model is made sure. Moreover, the transform characteristic of section is analyzed, the dynamic change process of rolling-force, stress and strain is reappeared and the variety regulation is analyzed. Through the contrast the variety regulation between the simulation and the spot-line measurement, the conclusion that the datum are matched basically is obtained.

并且，分析了连轧无缝钢管截面的变形特点及轧制力和应力应变的变化规律，重现了轧制力和应力应变的动态变化过程，对比了有限元数值模拟的轧制力与现场实测的轧制力，得到了两者的变化规律基本相符的结论，证实了显式动力学有限元法作为连轧无缝钢管的研究方法的可行性。

Through the development of the secondary piercer unit with forward angle change type three roll structure, the role of "Rolling Effect" principle in three roll cross rolling is advanced, based on which the design principle of roll shape and pass is put out.

通过对变送进角型三辊铝管二次穿孔机组的研制，提出"辗轧效应"原理，在三辊斜轧中得到应用，并以此推出辊形与孔型设计原则。

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℃。

The software package of real-time animation of workpiece forming has been developed.

最后利用计算机动画技术，将楔横轧轧制过程中轧件成形过程进行模拟，实现了模拟轧制。

The choice,installation,cooling and cooling water quality requirement of carbide roll ring were introduced,which used in high-speed wire rod mill of Chongqing Iron and Steel Co.

介绍了重庆钢铁股份有限公司高速线材轧机硬质合金辊环的选择、安装、冷却以及其对水质的要求，并简要介绍了生产中轧槽轧制量的设定，以及轧槽的磨损与修复等。

The children will roller-skate down the streets in the middle of the night ---- w IT h sun in their faces.

孩子们会半夜出来溜冰——阳光洒在他们脸上，小型摩托艇轧轧叫着驶出港湾。

The heats by plastic deformation and friction during cold rolling process were the main causes to in crease the temperature of strip and roll.

1前言轧制过程中由于轧制区的摩擦热和轧件在变形阶段所吸收的变形热，将使轧件和轧辊温度升高。

In the paper, the present state of ultra-fine-grained materials, severe plastic deformation and Asymmetrical-ARB are introduced in detail; the craft to fabricate ultra-fine-grained copper using Asymmetrical -ARB is studied fully; the problem of combination of interface is settled; the affect of homogenizing annealing、 annealing and rolling method on mechanical properties of materials prepared by Asymmetrical-ARB is discussed and analyzed when control parameters of rolling mill such as the press—ratio、 the asynchronous rate、 rolling—speed are fixed, and a kind of craft that meets to requirement of experiment is made out.

本文对超细晶、大塑性变形技术、异步轧制目前国内外研究进行了详细的介绍；对异步叠轧方法制备超细晶铜工艺做了较为细致的研究：解决界面复合问题；在压下率、异步比、轧制速度等轧机控制参数固定条件下，探讨了均匀化退火工艺、去应力退火工艺和轧制方式对异步叠轧材料力学性能的影响，并进行了分析，制定出符合实验要求的轧制工艺。

I took my dingy volume by the scroop, and hurled it into the dog- kennel, vowing I hated a good book.

随着关门的轧轧声，我拿起我那本肮脏的书，用力扔进狗窝里，并发誓我讨厌说有的好书。

You should oil the sewing machine to stop the squeaking .

你应该给缝纫机上点油，以免发出轧轧声。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。