Method for handling stacked steel due to strip breakage on rolling mill

Abstract

The invention provides a method for handling stacked steel due to strip breakage on a rolling mill and is applied to the technical field of production and processing of rolling mills. Strip steel of the rolling mill is wound through a winding component after being rolled out of gaps between working rolls. The handling steps for stacked steel due to strip breakage include that: when steel stacking due to strip breakage occurs to the rolling mill, the gap of each working roll assembly is controlled to clamp stacked steel; the working rolls of the rolling mill are controlled to rotate reversely, and the working rolls which clamp the stacked steel pour back the strip steel in the direction opposite to the rolling direction; and the working roll assemblies drive the stacked steel to quit a steel rolling port to finish handling of the stacked steel due to strip breakage. By means of the method, time for handling strip breakage can be saved, the production efficiency can be improved, the safety of operators and devices in an accident handling process can be guaranteed, and the labor intensity and operating time of the operators can be reduced.

Description

technical field [0001] The invention belongs to the technical field of rolling mill production and processing, and more specifically relates to a method for treating broken strips and stacked steel in a rolling mill. Background technique [0002] The tandem cold rolling mill is a full continuous four-stand six-high rolling mill. The thickness of the rolled product is 0.3~2.50mm. Heaps of steel will be formed at the exits of each rack, and the treatment method is generally to use a hoist to pull out the heaps of steel at the exit of the rack along the direction of the exit of the rolling mill, or use an oxygen cutter to cut off the heaps of steel at the exit one by one and lift them up. This treatment method has a lot of oil in the emulsion between the racks, and there is a fire hazard after the fire, and the equipment such as anti-wrapping boards and dam rollers installed at the exit of the rolling mill has a small operating space and is easy to slip and fall, and it is diff...

AI Technical Summary

Problems solved by technology

[0002] The tandem cold rolling mill is a full continuous four-stand six-high rolling mill. The thickness of the rolled product is 0.3~2.50mm. Heaps of steel will be formed at the exits of each rack, and the treatment method is generally to use a hoist to pull out the heaps of steel at the exit of the rack along the direction of the exit of the rolling mill, or use an oxygen cutter to cut off the heaps of steel at the exit one by one and lift them up. This treatment method has a lot of oil in the emulsion between the racks, and there is a fire hazard after the fire, and the equipment such as anti-wrapping boards and dam rollers installed at the exit of the rolling mill has a small working space and is easy to slip and fall, and the operation is difficult. The general processing time takes 5-6 hours, and it may even take more than 10 hours to process if the pile of steel is serious