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彩铝卷的宽展问题

返回列表 来源: 发布日期: 2021.03.05

彩铝卷的宽展问题

由于彩铝卷接触面摩擦力的影响,以及变形区的几何形状和尺寸的不同,彩色铝板卷的扩散沿高度方向分布不均匀
(1) 彩铝卷滑动扩展是指变形金属与轧辊在接触面上的相对滑动,增加了轧件的宽度。用△B1表示,这部分轧件展开后的宽度为:
B1=Bh+△B1

4.天津彩涂板 (4)3
(2) 压扁和展平是由于接触摩擦阻力的作用,在隔热彩铝板变形过程中,使轧件侧面的金属翻转到接触面上,使轧件宽度增大,以△B2形式排出
B2=B1+△B2=Bh+△B1+△B2
(3) 彩铝卷鼓形宽展是指轧件侧面鼓包引起的宽展,用△B3表示。此时,轧件宽度为:
B3=B2+△B3=Bh+AB1+△B2+△B3
因此,轧件总宽度为:
△B=AB1+△B2+△B3
一般来说,彩铝卷展开的理论和计算是将轧件的横截面转化为相同厚度的矩形后,轧件宽度与轧制前轧件宽度之差,即△B=bh-bh0
摩擦系数f越大,不均匀变形越严重。在腐蚀情况下,压扁扩散和鼓形扩散越大,滑动扩散越小。

Due to the influence of the contact surface friction between the roll and the rolled piece, as well as the different geometry and size of the deformation zone, the spread of color aluminum coil plate is unevenly distributed along the height direction

(1) Sliding spread refers to the relative sliding between the deformed metal and the roller on the contact surface, which increases the width of the rolled piece. It is expressed in △ B1: and the width of this part of the rolled piece after spread is:
B1=Bh+△b1
(2) Flattening and spreading is due to the effect of contact friction resistance, which makes the metal on the side of the rolled piece turn over to the contact surface during the deformation process of the heat insulation color aluminum plate, so that the width of the rolled piece increases, expessed as △ B2
B2=B1+△B2=Bh+△B1+△b2
(3) Drum spread refers to the spread caused by the bulging of the side of the rolled piece, expressed as △ B3. At this time, the width of the rolled piece is:
B3=B2+△B3 = Bh+AB1+△B2+△B3
Therefore, the total width of rolled piece is:
△B=AB1+△B2+△B3
Generally speaking, the theory and calculation of the spread of heat insulation color aluminum coil is the difference between the width of the rolled piece and that of the rolled piece before rolling after the cross section of the rolled piece is transformed into a rectangle of the same thickness, that is, △ B = bh-bh0
The larger the friction coefficient f is, the more serious the non-uniform deformation is. In the case of corruptions, the larger the flattening spread and drum spread are, the smaller the sliding spread is.

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