A method for avoiding coiling scratches on the surface of hot continuous rolling stainless steel strip

Abstract

The invention relates to the technical field of hot continuous rolling, in particular to a method for avoiding reeling and scratching of a hot continuous rolling stainless steel strip steel surface. The method for avoiding reeling and scratching of the hot continuous rolling stainless steel strip steel surface comprises the steps that the difference value between the actual speed of an upper pinch roll and the actual speed of a lower pinch roll is calculated, and if the absolute value of the difference value is larger than or equal to 0.5m / s, it shows that the speed difference exists in strip steel, and the stainless steel surface is scratched. The method has the beneficial effects that the phenomenon that in the reeling process, the up and down speeds of the pinch rolls are inconsistent is identified, through adjustment of pressure control parameters of the pinch rolls, the problem that in the reeling process of the hot continuous rolling stainless steel strip steel, the surface is scratched is solved, the strip steel product quality is ensured, and stable control over a hot continuous rolling reeling machine is achieved.

Description

technical field [0001] The invention relates to the technical field of hot continuous rolling, in particular to a method for avoiding coiling scratches on the surface of hot continuous rolling stainless steel strip. Background technique [0002] After the hot continuous rolling coiler finishes rolling the stainless steel strip, it is found that the surface of the steel coil is scratched and there is no trace on the strip surface quality inspection instrument at the exit of the finish rolling. When the shape of the stainless steel plate and the state of the equipment change, because the coiling control parameters cannot adapt to the change, the speed of the upper and lower pinch rollers during coiling will be inconsistent, that is, there will be a speed difference, which will cause scratches on the surface of the strip, which seriously restricts production. Quality is normal. Contents of the invention [0003] The technical problem to be solved by the present invention is:...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is: how to realize fast identification in the area of ​​the coiler and solve the scratch problem caused by the speed difference between the upper and lower pinch rollers

[0005] The beneficial effects of the present invention are: the present invention identifies the phenomenon that the upper and lower speeds of the pinch rolls are inconsistent during the coiling process, and can solve the problem of the surface of the hot continuous rolling stainless steel strip during the coiling process by adjusting the pressure control parameters of the pinch rolls. Scratch problem, ensure the quality of strip products, and realize the stable control of hot rolling coiler