Rewinding and separating method for stainless steel pattern plate of work roll contactless steel plate

Abstract

The invention relates to a rewinding and separating method for a stainless steel pattern plate of a work roll contactless steel plate, and belongs to the metallurgy field. The method comprises the procedures as follows: selecting an operation mode through a flattening and separating unit, threading a strip steel, tensioning the strip steel, winding the strip steel, penetrating the strip steel and performing tailing disposal, wherein the flattening and separating unit selects a rewinding mode for operation, and a straightener roll gap is larger than 60 mm; an unwinding machine press roll is used for threading the strip steel, a deep bending roll is used for flattening a strip steel head part, and the flattening length is larger than 3 m; a vehicle is stopped when the strip steel head part reaches an outlet side guide position, and the straight head roll is lifted to the highest, so that the tensioned strip steel is suspended in the straightener roll gap; the strip steel head part is wound and tensioned at an outlet pinch roll; the tension strip steel is guaranteed to be suspended in the straightener roll gap; the winding tension per unit is smaller than 2Kg / mm <2>; the winding steel penetrating speed is smaller than 60m / min; and a pinch roll and the straight head roll at a tailing disposal inlet are put down timely, the flattened tail part is 2-3m long, and the tailing disposal speed is 15 m / min. The method can prevent the surface of the steel plate from being scratched in rewinding and separating processes of a hot-rolled stainless steel pattern plate steel coil.

Description

technical field [0001] The invention belongs to the processing technology of hot-rolled stainless steel checkered plate and steel strip in the metallurgical industry, and in particular relates to a method for recoiling and splitting a stainless steel checkered plate without contacting steel plates with work rolls. Background technique [0002] 300 series stainless steel checkered plate is a high-tech, high value-added product developed by TISCO. It has a broad market prospect and a promising development prospect. [0003] Due to the limited equipment capacity of the next process of hot rolling, only checkered hot-rolled steel coils with a unit weight of less than 8.5 tons can be received. [0004] The unit weight of conventional stainless steel coils in 1549 hot rolling equipment is 12-16 tons / coil. The equipment load is heavy and operation control is difficult during the production of stainless steel pattern plates, and the smaller unit weight of steel coils is not conduciv...

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Problems solved by technology

This is the direct cause of serious damage to the roller surface of the leveler

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