Method for protecting cold rolled strip steel against strip breakage at cleaning section
A technology of cold-rolled strip and cleaning section, which is applied in the field of cold-rolled strip, which can solve the problems of broken strip and easy deviation of strip, and achieve the effect of convenient overall control, avoiding broken strip, and easy realization
Active Publication Date: 2020-04-03
WISDRI ENG & RES INC LTD
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Problems solved by technology
[0005] The purpose of the present invention is to overcome the defects of the prior art and provide a method for preventing strip breakage in the cleaning section of the cold-rolled strip steel, aiming at solving the problems that the strip steel in the cleaning section is easy to run off and broken
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[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0022] see figure 1 , the embodiment of the present invention provides a method for preventing strip breakage in the cleaning section of cold-rolled strip steel, specifically for controlling the problem that the strip steel 2 continues to deviate in the cleaning section, mainly because each washing tank in the cleaning section is provided with The position detector 1 can detect the position information of the strip steel 2 at the corresponding position through...
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The invention provides a method for protecting cold rolled strip steel against strip breakage at a cleaning section. A position detector is arranged in each washing tank of the cleaning section, stripsteel position information at a corresponding position is detected by the position detectors, the strip steel deviation amount and deviation time at the corresponding position are calculated when theposition detectors detect strip steel deviation, the linear pressure from a squeezing roller close to the position detector to the strip steel is adjusted to a minimum value, and when the strip steeldeviation amount detected by the position detector is smaller than a set value, the linear pressure from the corresponding squeezing roller to the strip steel is restored. According to the method, the position detectors are matched with the squeezing rollers, whether the corresponding position of the strip steel is deviated is judged by the position detectors, and then the deviation phenomenon ofthe strip steel at the cleaning section can be effectively controlled by adjusting the linear pressure from the nearest squeezing roller to the strip steel to the minimum value, so that the strip steel is prevented from being broken; and in addition, the whole operation is simple and easy to realize.
Description
technical field [0001] The invention relates to cold-rolled strip steel, in particular to a method for preventing strip breakage in the cleaning section of cold-rolled strip steel. Background technique [0002] There is a lot of dirt on the surface of cold-rolled strip steel, and the total amount on one side is generally as high as 300-600mg / m 2 . The dirt is mainly composed of three parts. The layer close to the substrate is iron oxide film; on it is iron powder and other loose impurities; the outermost layer is an oil film layer mainly made of rolling oil. If the dirt is not cleaned, it will affect the quality of the subsequent coating, such as uneven coating or poor adhesion, and nodules on the surface of the furnace roll, which will cause impressions or scratches on the surface of the strip. hurt. Therefore, a strip cleaning section is provided on the cold rolling coating unit to remove the dirt on the surface of the strip. [0003] When the strip steel is running in...
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IPC IPC(8): B21B45/02B21B38/00
CPCB21B38/00B21B45/0269B21B45/0275
Inventor 贺立红张毅蔡玲谢霞
Owner WISDRI ENG & RES INC LTD