Applicable to the device and method for improving the yield of welding leaders for double-stand cold rolling mills

Abstract

The invention relates to a device and a method suitable for improving yield of a welding leading tape of a double-stander cold rolling mill. The method comprises the steps of rotating ground rollers to uncoil a qualified coil; conveying the end part of a steel coil to a welding position after uncoiling the qualified coil; coiling a leading tape coil upwards to a leading tape uncoiler, conveying the leading tape coil to a transverse cutting shear after centering the leading tape coil by using centering vertical rollers and straightening the leading tape coil by using a straightening machine, and shearing off an unqualified leading tape head; conveying the leading tape head to the welding position; welding the leading tape head with the end part of the steel coil by using a welding machine; reversely rotating the ground rollers to carry out recoiling; bundling a recoiled big coil, and conveying the recoiled big coil to a double-stander rolling device through an double-stander; uncoiling the steel coil by using a steel coil uncoiler, wherein an uncoiled steel belt penetrates the space between mill rolls of a double-stander reversable mill, and two upper mill rolls of the double-stander reversable mill are both lifted; and coiling two ends of the steel belt by using a steel belt coiling machine, and starting rolling after the mill rolls of the double-stander reversable mill fall. According to the device and the method, the cold rolling efficiency of an iron and steel enterprise can be increased, a narrow leading tape can be used, and the production cost is relatively low.

Description

Technical field [0001] The invention relates to a cold rolling equipment and a cold rolling method, in particular to a device and a method for improving the yield rate of a welding lead strip suitable for a double-stand cold rolling mill. Background technique [0002] Compared with the continuous rolling mill, the reversible rolling mill has the characteristics of less investment and flexible production organization. However, because the steel strip cannot be rolled at the head and tail, there is a congenital deficiency of low yield. Compared with the single-stand rolling mill, the two-stand cold rolling mill has more serious unqualified parts of the head and tail thickness, which restricts the improvement of the yield rate, which becomes an important reason for restricting the improvement of cold rolling efficiency. Summary of the invention [0003] The purpose of the present invention is to provide a device and method for improving the yield rate of welding lead strips suitable...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a device and method for welding leader bands suitable for double-stand cold rolling mills to increase the yield. It welds the leader bands on the outer ring of the steel coil off-line before rolling, which can solve the problem of existing double-stand problems. The problem of low yield in the use of reversible cold rolling mills is conducive to improving the cold rolling benefits of iron and steel enterprises

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