齐齐哈尔彩涂板生产中活套的形式有哪些

彩涂板生产中钢带连续机组的活套通常有以下几种形式:卧式活套、立式活套、活套坑和螺旋活套。以下简单介绍一下这几种活套的特点:

(1)卧式活套这种活套一般设置在设备的上方或地坪以下，占地面积小，储存量大，结构简单，适用于车间长度方向受限的机组。

(2)立式活套:也叫活套塔，最适宜于薄钢带的存储装置。彩涂板生产中其优点是在占用空间小的情况下可以获得大的充套套量，易于控制钢带运行和钢带的张力。断带时，制动上部转向辊，可使钢带继续保持穿好带的状态。立式活套又分为上部程组移动，下都辑组固定和长部辊组固定，下部辊组移动两种形式。下部鞋组固定，上部辊组移动的优点是固定提组在地面上或地坑中进行穿带和维修比较方便。
(3)活套坑:它是较早使用于连续机组的钢带储存方式。这种方式有许多缺点，各个活套弯的弯折与钢带表面之间容易引起摩擦，影响钢带的表面质量。另外，活套坑后的第一对夹送辊的机械负荷太大， 彩涂板生产中它一方面必须从活套坑中拉出钢带，另一方面又要通过它调节工艺段清洗槽内的垂度，所以彩涂机组几乎不采用这种形式。
(4)螺旋活套:这种活套仅适用于宽度较窄，速度较低的连续机组，钢带间的摩擦对产品的质量有很大的影响，因此彩涂机组也极少采用这种形式。

无论哪一种形式的活套，钢带在活套中的运行应该平稳，不能扭转，不能产生拉伸变

The looper of continuous steel strip mill usually has the following forms: horizontal looper, vertical looper, looper pit and spiral looper. The following is a brief introduction to the characteristics of these loopers:
(1) Horizontal looper is generally set above the equipment or below the floor, with small floor area, large storage capacity and simple structure, which is suitable for the unit with limited length direction in the workshop.
(2) Vertical looper: also known as looper tower, most suitable for thin steel strip storage device. Its advantage is that it can get a large amount of sleeve filling in the case of small space occupation, and it is easy to control the operation and tension of the steel strip. When the strip is broken, the upper turning roll can be braked to keep the strip in good condition. The vertical looper can be divided into two forms: upper group moving, lower group fixing, long group fixing and lower group moving. The lower shoe group is fixed and the upper roller group moves. The advantage of the fixed lifting group is that it is convenient to wear and maintain the belt on the ground or in the pit.
(3) Looper pit: it is a steel strip storage method used earlier in continuous unit. There are many disadvantages in this way. The bending of each looper is easy to cause friction with the surface of the steel strip, which affects the surface quality of the steel strip. In addition, the mechanical load of the first pair of pinch rolls behind the looper pit is too large. On the one hand, it has to pull out the steel strip from the looper pit, and on the other hand, it has to adjust the sag in the cleaning tank of the process section through it, so the color coating unit hardly adopts this form.
(4) Spiral looper: this kind of looper is only suitable for narrow width and low speed continuous line. The friction between steel strips has a great influence on the quality of products, so it is rarely used in color coating line.
No matter what kind of looper, the operation of the steel strip in the looper should be stable, without torsion and tensile deformation