铝板生产厂家

铝板生产厂家的板形是如何控制的?

来源:  发布时间:2020-03-23 12:00:23  

  传统的板形控制方法包括辊倾斜、工作辊弯辊和调整辊冷却系统,但这些方法不能完全满足板形控制的要求,虽然因为弯曲设备响应,但有害干扰以外的轧制力和轧制力矩工件宽度,使得相当一部分的弯辊力作用抵消,阻碍发展的弯曲辊的影响;为了提高冷却液流量的分辨率精度,将喷嘴的流量比提高到10:1。此外,铝板生产厂家采用各种机械方法对轧辊系统进行修改,达到快速换辊的目的:
  Traditional flatness control methods include roll tilt, work roll bending and adjustment roll cooling system, but these methods can not fully meet the requirements of flatness control. Although the bending equipment responds, the rolling force and rolling torque workpiece width outside the harmful interference make a considerable part of the bending force offset, hindering the development of the bending roll; In order to improve the resolution accuracy of coolant flow, the flow ratio of the nozzle is increased to 10:1. In addition, aluminum plate manufacturers use various mechanical methods to modify the roll system to achieve the purpose of rapid roll change:

铝板生产厂家
  (1)HC(高弧度)六辊机——在四辊轧机工作辊和支承辊之间添加一对中间辊可以沿轴向相对移动,所定义的轧件宽度移动距离,用于消除有害的轧件宽度工作辊和支承辊之间的联系,减少稀释两岸的轧件,提高弯辊力控制面板形状的影响。
  (1) HC (high camber) six roll mill - a pair of intermediate rolls can be added between the work roll and the back-up roll of the four roll mill to move relatively along the axial direction. The defined moving distance of the strip width is used to eliminate the relationship between the harmful strip width work roll and the back-up roll, reduce the dilution of the strip on both sides, and improve the influence of the roll bending force control panel shape.
  (2)VC(变量弧度)辊采用液压腔内辊支承辊,通过改变腔压力的方法调整支承辊弧度,抵消辊轧制力的作用下挠的魔法。
  (2) VC (variable radian) roll adopts the back-up roll in the hydraulic cavity. By changing the cavity pressure, the radian of the back-up roll is adjusted to counteract the magic of deflection caused by the roll rolling force.
  (3)TP(锥形活塞)辊两端支承辊内锥面活塞环,活塞与液压传动辊环调整弧魔法。
  (3) TP (conical piston) roller both ends support the conical piston ring in the roller, and the adjustment arc magic of the piston and the hydraulic drive roller ring.
  (4)DSR(动态弧度)卷7液压缸套在支承辊,使用液压旋转轴套,在轧件平面度要求的位置校正直接调节卷弧度(5),CVC辊(连续变量弧度)使用两个工作辊的形状就像一个保龄球,两辊磨程度相同,但相互错位18上下排列,轧辊长度的实际直径差小于1mm时,在轧辊间隙形状相对运动时,根据线性连续变化位置的规律,当工作辊在150mm之间轴向运动时,各轧辊的弧度可从0。5毫米到+ 0毫米。3米3)零电阻HC轧机中间辊的辊系和CVC工作辊运动需要几秒,所以通常为预设定调整磨机空载运行时,而不是在动载荷的滚动一个vc辊、TP辊和安全域辊以及预设定调整,也可以应用于动态长vc辊和TP卷使用时,轧制力还作用于颈部的支撑辊。当DSR辊使用时,支撑辊内的液压缸代替辊颈处的压紧装置。
  (4) DSR (dynamic camber) roll 7 hydraulic cylinder liner is on the back-up roll, which uses the hydraulic rotating shaft sleeve to directly adjust the roll camber (5) at the position required by the flatness of the rolled piece. CVC roll (continuous variable camber) uses two working rolls whose shape is like a bowling ball. The two rolls are of the same grinding degree, but they are arranged up and down in dislocation 18, When the actual diameter difference of the roll length is less than 1mm, when the gap shape of the roll moves relatively, according to the law of linear continuous change position, when the working roll moves axially between 150 mm, the radian of each roll can be 0. 5mm to + 0mm. 3 m3) the movement of the intermediate roll system and CVC working roll of the zero resistance HC mill takes several seconds, so it is usually preset to adjust the no-load operation of the mill, instead of rolling a VC roll, TP roll, safety zone roll and preset adjustment under dynamic load. It can also be applied to the use of dynamic long VC roll and TP roll, and the rolling force also acts on the supporting roll at the neck. When the DSR roll is used, the hydraulic cylinder in the supporting roll replaces the pressing device at the roll neck.
  因此,可以在不影响轧辊挠度的情况下改变热轧带钢的平台偏差,这是导致最终产品厚度偏差的主要原因。在冷轧机采用先进的设备和控制系统可以小于垂直厚度公差的千分之几,但横向厚度公差通常大于跳关闭,这是由于带钢冷轧,因为厚度很小,金属横向流动的限制,所以改善原来的皇冠,不会产生直线度偏差时铝合金带材厚度大于12毫米,可在不影响轧件凸度的前提下进行矫正。鉴于热轧精轧机的精轧机厚度小于最小厚度,在热轧后最后一次在精轧机上卷取时,除了用轮廓仪检测产品的凸度外,还需要用平整度仪监测产品的平整度。从热轧机上轧制出来的带钢应该有一个轻微的中间凸度,但不是中间凸度,因为带钢的中心部分可以容纳比边缘的应力更多,但仍然保持其平整度。
  Therefore, the platform deviation of hot rolled strip can be changed without affecting the roll deflection, which is the main reason for the thickness deviation of the final product. The advanced equipment and control system adopted in the cold rolling mill can be less than a thousandth of the vertical thickness tolerance, but the horizontal thickness tolerance is usually greater than the skip close. This is due to the cold rolling of strip steel, because the thickness is very small and the horizontal flow of metal is limited, so the original crown is improved, and the thickness of aluminum alloy strip is greater than 12mm when the straightness deviation does not occur, It can be corrected without affecting the crown of the rolled piece. Since the thickness of the finishing mill of the hot rolling finishing mill is less than the minimum thickness, it is necessary to use the flatness meter to monitor the flatness of the product in addition to using the profilometer to detect the convexity of the product when coiling on the finishing mill for the last time after hot rolling. The strip rolled from the hot rolling mill should have a slight intermediate crown, but not an intermediate crown, because the central part of the strip can accommodate more stress than the edge, but still maintain its flatness.
  以上是铝板生产厂家为大家先容的相关内容,想要了解更多内容,欢迎访问网站:The above is the relevant content introduced by the aluminum plate manufacturer for you. To learn more, please visit the website: http://www.jndclyxgs.com

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