连续纵列式冷轧机的平直度模型和控制外文翻译，外文文献翻译

附 录 Row tandem cold rolling mill models and the flatness control In the second half of 1994, Sidmar on the 1st column of cold rolling mill was transformed into a row of five full mill, and equipped with a pickling line. The composition of its mill equipment, including: Screwdown hydraulic rack on the body； with the first-axial movement to the middle of the six roll roller mill； rack all the support roll； final Axial on the rack Mobile work roll. The new cold-rolling technology and this new pickling line to allow the pickling process, the export size and strip mill flatness of the closed-control. It contains two straight measurement system: First, the exit of the mill, and the other is on a rack between the cracks. Flatness through the traditional first-and last a feedback loop between the methods used straight-line model in support of the roll and axial movement set up to control the point. On-line model used to describe 6,4 roller mill axial movement of flatness of linear elements, parabolic and quartic equation. Apart from the straight-degree feedback control and set up online model, a unique feedback system through the strip to confirm the new shape of the type of rack with the flatness measurement to improve the mill exports straightness. The new system all have reached the objective of improving the range of products offered by the flatness quality requirements. Flatness requirements Sidmar rolling mill-650 1880 mm, thick 0.3 3.5 mm and material strength from low-carbon steel to HSLA and in the scope of the carbon steel materials. From the cold-rolled flat-out good for the workpiece can increase production and productivity, it is easy to meet the requirements of the final customer. Typically, the flatness of raw materials from the change to 15 units to go through the entrance to the export line, but according to the residual error and patterns of different wavelengths, the rolling of the roughness is still greatly changed. Sidmar of the mill, in the stable operation of the circumstances, from raw materials to 8 units with volume flatness is the standard performance, better than from raw materials to 11 units, weaker than from raw materials to 5 units. In the new online rolling, rolling with the completion of the volume was shorter, and its new hot-rolled to the 12 volumes between Weld. In this regard, it is the flatness of interference is particularly important, but also for a single feedback system of feedback caused great difficulties. Different sizes of the mill online flatness requirements Physical model makes use of the mechanical structure of the most complex flatness model to a basic model was established. This basic model of the physical principles into mathematics and as a module on the code of procedure. Module code changes set to be simulated with special machinery to the requirements described in the form of software. For example, if the same model can be set to approximate a graphic description of quadratic equation or linear, quadratic equation and four equations, or for a more detailed set around the strip of 50 units. Sidmar mills online needs of the linear model of the device, secondary and four of the equation. Shape model includes the following modules: Roll the deflection Roll of contact stress Roll-indentation Tensile strength Coil pressure Roll the deflection - Roll strength calculation using a typical beam bending theory. Roll can be considered a distribution load with the beam, on the assumption that the Centre for roller bearings fulcrum mainly by the deflection and bending torque and shear stress caused. Because the roll diameter and length of the roll ratio is very large, shear stress caused by deflection is also counting. With short tapered roller, axial movement can reduce support the work roll contact length. In this way, across the width of the strip work roll can reduce the deflection. This way, Roll asymmetric axial movement can significantly reduce the width of the strip flatness of the sensitivity. Roll axial movement of the results can roll around the support of the changes in the distribution of load to simulate. Roll of contact stress - the support between the two roller pressure led to a local point of contact around the defect, along the axis of a distribution of the load. Through the Hertz pressure, according to two of Roll contacts between the different deflection to simulate the distribution of load. Roll-indentation - Roll gap appearance by the work roll and strip contacts between the different and flexible indentation great impact. Roll a small indentation model regional units on the pressure arising from the roll for the deflection factor. Straightening depend on the general roll and strip contact surface of the combined effects of small area. Tensile strength - flat, tensile strength and strip the pressure caused from the outline of each other at the top of the rack had a lot of negative feedback. As strip stretching from the load can change from the roll compression to stretch and get the sensitivity. Coil pressure - As the strip surface defects caused by work roll to strip from the horizontal surface of the load distribution. Comprehensive rolling pressure / arc-length model of the rolling force to provide accurate forecasts. The flatness model, the use of a simplified form is built on the rolling force model on the basis of the sensitivity. Sidmar of equipment, the new head of the strip is based on the impact of each volume with his head in a hot record in the process of measurement to calculate, although not very important, but more accurate measurement of the increase in the head Straightness model accuracy played an important role. Coil shape - roll bite in two places, depending on the shape of the strip slot shape. The shape depends on the roll deflection, shape and surface roll gap, through their respective geometric model to describe. Flatness - each rack between the flatness of rolling to a large extent dependent on the process of drawing in varying degrees. On cold-rolled, the next strip process was limited to a partial region, in addition to the extra-territorial area, the strip can be assumed to be deviations vertical. Exports flatness decided to strip the head of the changes and the new strip to the combined effects of flatness. Sub-structure - a special structure to reduce the rolling model, a number of standard components of the subsystem model were constructed. Figure 2 on the roll, a simple components can be defined under the influence of the work force of the roller deflection. Use this method, roll roll axial movement and support the length of the combined effect of exposure to computational geometry sensitivity. This component of the geometric sensitivity mathematical expression are as follows: GxkgJxkdzzxxy )()(),()( 2/2/ (1) Another component is used to define work roll and strip contacts between the force, and it is working roller deflection into the strip shape and stretching the function. 2/ 2/ 2/ 2/ )(),()(),()( dzzhi nzxkcdzzyzxkpxp 2/ 2/ 2/ 2/ )(),()(),( dzzoutzxkodzzF i nzxki (2) This synthesis of the two components were later used to roll and strip the complex model. 6 roll and four roll mill structure - with geometric shapes and components of knowledge, most of the rack component model can be constructed, for example, such as the four-high mill work roll bending and axial movement； six ROLL Mill work roll and roll the middle of the implementation of devices and bending the middle of the roll axial movement. And six four-high model of the roller mill with the same method of structural 6-high mill in the circumstances, a backup roll and roll the middle of the roll impact must be considered, the conditions have to balance their work and roll and roll the unanimous support . 连续纵列式冷轧机的平直度模型和控制 在 1994年的下半年， Sidmar一号纵列式冷轧机被改造为完全连续的五架轧机，并且配备了一条酸洗线。其轧机设备的组成包括：机架上的液压压下机构；第一架带有能轴向移动的中间辊的六辊轧机；所有机架的支撑辊；最后一个机架上的轴向移动的工作辊。这个新的冷轧技术和这条新的酸洗线允许酸洗过程、轧机出口尺寸和钢带平直度的闭式控制。 它含有两条平直度测量系统：一是在轧机出口处，另一个是在机架间的缝隙。平直度是通过传统的第一架和最后一架之间的闭环反馈方法，用 平直度在线模型在支撑辊和轴向移动设定的点来控制。在线模型用来描述 6、 4 辊轧机轴向移动的平直度元素的线性、抛物线和四次方程。 除了平直度反馈控制和在线模型设定以外，一种独特的反馈系统通过确认新来的钢带的外形的种类，用机架间的平直度测量来提高轧机出口平直度。新系统的所有客观性能都达到了提高所提供的产品范围的平直度质量的要求。 平直度要求 Sidmar 轧机轧制宽 6501880mm，厚 0.33.5 mm 和材料强度从低碳钢到HSLA和中碳钢范围的材料。从冷轧机出来的好的平直度的轧件能提高生产量和生产率，很容易满足 客户最后的要求。 典型地，平直度从原料改变到 15个单位需要经过入口到出口线，但根据残留错误的波长和型式的不同，轧件的不平度水平仍大大的改变。 Sidmar 轧机的改造之后，在稳定运行的情况下，从原料到 8 个单位是带卷平直度的标准性能，好于从原料到 11个单位，差于从原料到 5 个单位。 在新轧制线上，轧制完成的带卷被剪短的时候，它和新来的热轧带卷之间有一两个焊缝。在这点上，它对平直度的干扰是尤为重要的，而且对单一反馈系统的反馈造成很大的困难。 不同尺寸轧机的在线平直度要 求 物理模型的采用使得大多数机械结构的复杂的平直度模型能以一套基本的模型被建立。 这个基本模型把物理原理转化为数学上的并作为模块代码的程序。模块代码被更改设定为模拟特殊机械排列到要求描述的形式的软件。举个例子，如相同的模型能被设定为一个图形的近似二次方程或线性描述、二次方程和四次方程，或者设定为更详细的遍布钢带的 50个单位。 Sidmar轧机的在线装置模型需要线性的、二次的和四次的方程。 外形模型包括下列模块： 轧辊的挠度 轧辊间接触应力 轧辊面压痕 抗拉强度 钢带压力 轧辊的挠度 轧辊强度计算用 的是典型梁弯曲理论。轧辊可认为是一个带有分布载荷的梁，假定轧辊轴承中心为支点和挠度主要是由弯曲力矩和剪切力引起的。因为轧辊直径和辊身长度的比值是非常大的，所以剪切力引起的挠度也算在内。 用短的锥形轧辊时，轴向移动时可以减少支撑工作辊的接触长度。这样，横跨钢带宽度的工作辊的挠度可以减小。用这种方法，轧辊不对称的轴向移动能明显地减小钢带宽度方向的平直度的灵敏度。轧辊轴向移动的结果可以通过遍布轧辊支撑面的分布载荷的变化来模拟。 轧辊间接触应力 两辊之间的支撑压力导致接触点周围产生局部缺陷，沿着水平轴线产生分布的 载荷。通过 “赫兹压力作用 ”根据两轧辊之间的接触面挠度的不同来模拟这个分布载荷。 轧辊面压痕 轧辊间隙的外形受工作辊和钢