A method for replacing the steering roll in the cleaning section of a continuous annealing unit with a belt
A technology of turning rolls and cleaning sections, applied in metal rolling stands, metal rolling mill stands, metal rolling, etc., can solve the problems affecting the yield of strip steel, reducing the operation rate of the unit, and increasing the scrap of strip steel, etc. The effect of shortening the roller changing operation time, improving the operation efficiency and improving the yield
Active Publication Date: 2017-04-05
ANGANG STEEL CO LTD
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Problems solved by technology
[0006] 3. Re-thread the belt after changing the roller; it takes 3 hours to thread the belt;
[0008] Because it takes a long time to change the roll, pull out the belt and thread the belt, it takes a total of 7 hours for each roll change, which reduces the unit operation rate, seriously affects the strip yield, and increases the strip scrap
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Embodiment Construction
[0027] The present invention has the method for changing the turning roll of the cleaning section of the continuous annealing unit, at first making the supporting device 6 for standby. Depend on figure 1 It can be seen that the support device 6 is composed of the positioning pin 2, the support rod 3 and the cross brace. There are two supporting rods 3, which are cut from two hollow steel pipes with the same diameter and length, and a pin hole 1 is processed respectively at the two ends of the hollow steel pipes. There are two cross braces, and the cross brace is welded by the cross head 5 and the insertion rod 4, that is, two insertion rods 4 are respectively welded on the inner side of the cross head 5 to form a "п" shaped cross brace. A pin hole 1 is also processed at a position corresponding to the support rod 3 . At the same time, prepare 4 positioning pins 2 for use in advance.
[0028] The concrete method and the step of changing steering roller 8 are (see figure 2 ...
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The invention provides a method for replacing steering rolls of a cleaning segment of a continuous annealing unit, with strip steel. Before a steering roll is replaced, a supporting device which consists of supporting rods, two transverse supports and positioning pins is manufactured in advance for standby application. The method for replacing the steering rolls comprises the following steps: loosening the strip steel, and hoisting the strip steel away from the roll surface; placing the two supporting rods under a strip-steel movable sleeve; respectively placing two ends of each supporting rod on two lateral edges of the upper part of a cleaning box body; then, inserting inserted rods of the two transverse supports into two ends of each of the supporting rods respectively, and positioning the inserted rods by the positioning pins; connecting a demounted steering roll with a roll replacing vehicle; after fastening a top thread, hoisting the steering roll; backing the roll replacing vehicle out so as to drag out the steering roll; mounting a new steering roll by the roll replacing vehicle, and then hoisting the strip-steel movable sleeve by a crane; and removing the supporting device so as to complete the replacement of the steering roll. Through the adoption of the method disclosed by the invention, the quick replacement of a roll with strip steel is realized, so that the time for replacing a roll is shortened from 7 hours to 4 hours, the operation efficiency of the unit can be significantly improved, wastes generated by fractured strips during roll replacement are effectively avoided, and the yield of cold-rolling strip steel is increased.
Description
technical field [0001] The invention belongs to the field of steel rolling machinery and equipment, and in particular relates to a method for quickly replacing a steering roll in a cleaning section of a continuous cold rolling annealing unit without breaking the belt. Background technique [0002] The cold-rolled continuous annealing unit is a modern production line for the production of cold-rolled high-end products. Its products have stable performance and good quality, and can be adapted to different users such as automobiles and home appliances. Therefore, the entrance of the continuous annealing unit is designed with a strip cleaning section. Through spraying, brushing, electrolysis, rinsing and drying processes, the surface quality of strip steel can be effectively improved. [0003] There are 7 steering rollers in the cleaning section. The steering rollers are steel rubber-lined rollers. The normal wear of the roller surface has a certain period, and the period needs ...
Claims
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IPC IPC(8): B21B31/08
Inventor 韩克鸿巢富哲吴吉龙李志强
Owner ANGANG STEEL CO LTD