Roll shifting operation method of skin pass mill

Abstract

The invention discloses a roll shifting operation method of a temper mill in the technical field of hot rolling and finishing. Firstly, a scale line is set on the display of the uncoiler, and then the steel strip is gradually moved within the interval marked by the scale line with the scale line as the reference. The grid moves to produce steel coils. In this process, the two ends can be worn first, and then the range of movement can be gradually narrowed towards the middle, so as to maximize the use of the work rolls. The beneficial effects of the present invention are: practical, reliable, low cost, and easy to implement. By setting the scale line on the uncoiler display, and then adopting the steel strip to move grid by grid within the scale range, the steel coil is produced, so that the work roll is subjected to The force points are dispersed, and the wear grooves in the range of the roll body can be repaired to a certain extent, thereby delaying the rapid damage of the work rolls of the temper mill, improving the unit operation rate and product quality, reducing the consumption of work rolls, and reducing the wear and tear of work rolls. Capital investment.

Description

technical field [0001] The invention relates to the technical field of hot rolling finishing, in particular to an operation method suitable for roll shifting of a hot rolling skinning unit. Background technique [0002] The main purpose of the hot-rolled finishing and tempering machine is to improve the shape of the steel coil and eliminate the local thickness tolerance, so that the steel plate has a good shape and high surface roughness, which can reduce the yield limit and improve the quality of the steel coil. Deep drawing performance. The hot rolling tempering machine is composed of two support rolls and two working rolls. Since most tempering machines do not have automatic roll shifting devices, the strip steel of the same width is worn at a fixed position during production, and the edge of the strip steel is in contact with the roll body. The wear speed is faster than that in the middle and grooves appear. When the rolling kilometers exceed 7 kilometers, the edge wear...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the existing tempering machine without roll shifting device, which causes severe wear and tear on the contact position between the work roll and the edge of the steel strip, resulting in frequent roll change of the work roll, etc., the technical problem to be solved by the present invention is: to provide a Track-shifting operation method of distributed stress point of leveling roller length

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