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The article introduces the technical requirements, experimental rolling processes, existing problems and improvement measures of the 25MnCrNiMoA round steel used for forging hook tail frame developed in the Rolling Plant.

介绍了轧钢厂开发的25MnCrNiMoA锻造钩尾框用圆钢的技术要求、轧制试验工艺、存在的问题和改进措施。

New multi—objectives function (including mill stand longitudinal stiffness, distribution coefficient of loaded pressure between rolls, weight of mill stand, rolling power, rolls loaded gap profile changeability of bending force, transverse mill stand stiffness of bending force, transverse mill stand stiffness of rolling load) multi—constraints (including rolls strength, spindle strength, backup roll bearing load, minimum rollable gauge, roll surface temperature rise) rolls system parameters optimization model of four—high cold strip mill is established, and programme for mill structural illustration creation on the platform of AutoCad designs is compiled. With this as basis, rolls system parameters of Yichang thin strip corporation's 1219 cold mill are calculated using SUMT (subsequent unconstrained minimization technology).

本文建立了以板形和板凸度控制特性为目标的四辊轧机多目标函数（包括轧机纵向刚度、辊间压力分布系数、轧机重量、功率、弯辊力对轧机辊缝形状改变能力、对弯辊力的横向刚度、对轧制力的横向刚度）、多约束条件（包括轧辊强度、接轴强度、支承辊轴承负荷、最小可轧厚度、轧辊温升等）的辊系参数优化模型，以此模型为基础，利用惩罚函数法计算了益昌薄板公司1219冷轧机辊系参数，编制了AutoCAD平台下的轧机结构示意图自动图形软件。

Part of the normal roller, the fault is not resolved, check for roller pressure, which can use FUSE (electrical purposes 20, fusealways) and qianyanzhou hobber in rolling direction, not to mention the occipital clearance to unload their plates and blankets, the slot for the Department in the roller snthase pad, if rolling pillow gap over specification number, the adjustment of the diaphragmless, the pillow are met at both ends of the clearance requirements, you can troubleshoot.

墨辊局部变态了，障碍仍未处置，再查抄滚筒之间的不张力，可用电工用不焊接丝（20号保障丝）和千分卡轧测滚枕间隙，必须卸下印版和橡皮布，在滚筒的不满档处分不抬轧测，若滚枕间隙超功表明书规矩的数值，则调动调不抬器，使滚枕两头间隙都相符表明书上的请求，即可摈斥障碍。

Roll pass on angle steel rolling, I-beam rolling and U-section, etc. were intensively studied.

他对角钢孔型轧制的，工字钢轧制和U -型钢轧制等剧做过深入研究。

To sette plate bending in jobbing sheet rolling process make use of test technology comprehnsive parameters are tested in jobbing sheet rolling process when plate bending.

中板轧制过程板坯弯曲现象是中板生产中普遍存在的难题。针对这一问题，利用测试技术对中板轧制过程板坯生成弯曲时的轧制参数进行了综合测试，摸清了轧制参数的变化规律及特点，为板坯弯曲的机理研究和设备改造提供了可靠的科学数据

Forging press, eccentric press, trimming press, knuckle joint coining and embossing press, pneumo-hydraulic hammers, rolling mill, cross wedge rolling machine, screw press.

锻压机，偏心压力机，整修压力机，关节接头模压和凹凸压力机，气动液压锤，轧钢机，横向楔形轧钢机，螺旋压力机。

The heat generation curves of seven rubber materials used in tires with the changes of temperature have been obtained by using Dynamic Mechanics Analysis technique on NETZSCH DMA242 instrument, knowing that the heat generation of every other rubber materials except inner liner rubber changes lightly alone with the temperature within 10℃～80℃. According to the Fourier law, the heat transfer coefficients of tire rubber are measured by stable method on self-made experiment instrument. The coefficients changes lineally within 20℃～80℃ and the relation formulas λ=λ〓+bt are given out attached with λ〓 and b. The specific heat of tire rubber are measured on Differential Scanning Calorimeter NETZSCH DSC204 and the relations with temperature are linear and the formula is c=c〓+bT, where c〓 and b gained from experiment result data are presented in the paper. The heat convection coefficients on the surface of rolling tire are measured according to the principle of heat-mass transfer analogy principle after simplifying rolling tire into rotating disk with straight movement on wind channel. The relation with rotation speed of disk is linear as h=5. 399+0.0258n and the relation with straight line speed of tire is linear too, h=

论文采用动态力学分析技术，使用NETZSCH DMA 242型实验仪，获得了轮胎用七种胶料的生热率随温度变化曲线，确知除内衬层胶以外，其它各种胶料在一般胎温范围内（10℃～80℃）的生热率随温度变化不大；轮胎胶料的导热系数根据傅立叶定律的基本原理，采用稳态法在自行搭建的实验台上进行测试，结果表明，材料的导热系数在20℃～80℃的温度范围内随温度呈线性变化，论文给出了各种材料导热系数的线性变化的关系式λ=λ〓+bt及其λ〓和b的值；轮胎胶料的比热运用差式扫描量热原理，在NETZSCH DSC204型DSC实验仪上进行测试，结果表明，胶料的比热随温度的变化呈线性变化，其关系可用c=c〓+bT表示，文中给出了根据实验数据拟合的c〓、b的值；对轮胎表面的对流换热系数的测定，本文先将滚动的轮胎简化为有直线运动的旋转圆盘，而后采用萘升华热质比拟技术，在风洞中测量了滚动轮胎表面的对流换热系数，结果表明，圆盘表面对流换热系数与转速呈线性关系，即h=5.399+0.0258n，轮胎表面对流换热系数与其直线运动的速度呈线性关系，即h=

The optimization problem with linear inequalities can be solved by Quadratic Programming. The simulation results show that the design improves the dynamic performance and suppress torsional vibration causing by rolling perturbation. The model predictive control suppresses rolling perturbation.

仿真结果表明，采用具有约束条件的预测控制策略的控制系统对轧机传动系统的控制效果在动态性能和抑制扭振效果上明显优于传统PI控制，可以较好的抑制轧制扰动对传动系统产生的影响，对解决轧制扰动鲁棒性控制问题是一种有效的解决办法。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。

In general, the mechanical mouse only need to be cleaned up "the body" in the ball rolling and rolling-axis can be.

一般来说，机械鼠标只需要清理"身体"里的滚动球和滚动轴即可。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48