A treatment method for broken rolls in finish rolling

Abstract

The invention provides a processing method for a finish-rolled broken roller. The processing method comprises the following steps of: when certain working roller breaks, separately screwing in a lifting ring into bolt holes inside working roller bearing boxes at the two sides of the broken roller; controlling a milling roller to lift in a balanced mode by a rolling mill PLC, enabling broken upper and lower working rollers to separate from a lower working roller and a lower supporting roller, enabling the lower parts of the broken rollers into anti-sliding cushion blocks, and keeping the broken rollers stable; bundling and fixing the broken rollers and the supporting roller by a nylon suspender, connecting and tightening the working roller bearing boxes at the two ends of the broken roller by a steel rope and two dual-action hydraulic cylinders, integrating two parts of the broken roller; and finally, pushing the connected broken roller out of the rolling mill through a roller-replacing pushing-pulling device. The processing method can effectively prevent the bearing box at the transmission side from tilting, increases broken roller processing speed, reduces labor intensity of staff, guarantees operation safety, and shortens original broken roller processing time to be 1.5 hours from original 3-5 hours, so that production is quickly recovered, and the operation rate of the rolling mill and the yield of a unit are increased.

Description

technical field [0001] The invention belongs to the technical field of steel rolling technology, and in particular relates to a rapid treatment method for broken rolls of a hot-rolled strip finishing mill. Background technique [0002] At present, there is no quick, simple and effective treatment tool and uniform and standard treatment method for roll breakage accidents in hot strip finishing mills. On the one hand, after the accident, the contact and coordination process is cumbersome, and the accident handling is complicated and takes a long time (usually 3 to 5 hours); on the other hand, only some experienced old operators are relatively clear about the specific handling steps and methods, and the accident has not Simulation training cannot be carried out when the accident occurs, so that new operators and operators who have not experienced the accident of broken rolls are at a loss when faced with the accident, resulting in the situation of researching the plan in advanc...

AI Technical Summary

Problems solved by technology

On the one hand, after the accident, the contact and coordination process is cumbersome, and the accident handling is complicated and takes a long time (usually 3 to 5 hours); on the other hand, only some experienced old operators are relatively clear about the specific handling steps and methods, and the accident has not Simulation training cannot be carried out when the accident occurs, so that new operators and operators who have not experienced the accident of broken rolls are at a loss when faced with the accident, resulting in the situation of researching the plan in advance and dealing with it while studying, resulting in prolonged accident handling time and seriously affecting The smooth progress of production and the capacity of the unit

In addition, due to the limited working space, after the operator enters the water cutting plate of the rolling mill, it takes a long time to insert the steel rope, which poses a high safety risk and extremely high labor intensity

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