轧制

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℃。

Two. Solve the problem on the aspect of contact and nonlinear loading compatibly, to make sure that the simulation level of model can be elevated.

二、合理解决在轧制过程中两辊之间的接触问题和轧制区上的非线性加载问题，以提高模型的仿真水平和计算精度。

This topic mainly makes full use of the theory of node curve in closed condition and theory of instantaneous transmission to ratiocinate the rolling curve equation of the ellipse in polar coordinates format.

推导了以极坐标表示的椭圆轧件楔横轧轧制曲线方程，为轧件成形提供了理论依据，扩展了非回转轧件轧制的范围。

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 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 chapter 4, the technology of rolling tube by SPG mill is studied.

第四章，双排辊冷轧管机轧制钢管的轧制工艺研究。

Two-stand mills ; load optimizing ; rolling press ; rolling recycle

双机架轧机；负荷优化；轧制力；轧制周期

The development of the shape theory has produced a great effect on the strip rolling technique. But with the increasing demands of the quality of rolling strip production in the market, the weakness has evidently appeared in the conventional theory.

板形理论的发展对板带轧制技术的发展起到了很大的作用，但是随着市场用户对轧制带钢产品质量的要求越来越高，传统的理论已表现出明显的局限性。

The observation of the sheet microstructure showed that under same rolling reduction be cause of the shearing stress of the cross-shear region in the cross shear rolling pro cess, it made the metal subjected more practical shearing strain and resulted in the increasing of the strength and deep drawing earing of the alloy sheet.

通过金相显微镜及电镜观察表明，在同样的几何变形程度下，由于异步轧制中搓轧区的作用，使金属经受更大的实际切变形，结果经异步轧制合金板的强度高，深冲制耳率也高。

The research on rolling force prediction for cold rolled thin plate by a mixed friction model including stick and slip frictions was carried out, and a new rolling force prediction model was obtained.

作者采用包括粘着摩擦和滑动摩擦在内的混合摩擦模型，研究了冷轧薄板轧制力预报问题，建立了轧制力预报新模型。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了