A process control method of vibrating iron sheet for hot-rolled pickling plate

Abstract

The invention discloses a process control method for a hot-rolled acid washing plate vibrating iron sheet, and belongs to the technical field of rolling processes. The process control method of the hot-rolled acid washing plate vibrating iron sheet comprises the following steps of heating a plate blank; rough rolling is carried out on the heated plate blank, the blanks enter a rough rolling machine R1 after passing through a side pressing machine, then entering a rough rolling machine R2 after passing through the rough rolling machine R1, the plate blank is rolled in the rough rolling machineR2 for five times, and a middle blank is obtained; the middle blank is subjected to finish rolling, the rolling force of the finish rolling machine frame F2 and F3 are controlled, the rolling force ratio of the rolling force of the finish rolling machine frame F2 and the rolling force of the finish rolling machine frame F6 is less than or equal to 1.5:1, the rolling force ratio of the rolling force of the finish rolling machine frame F3 and the rolling force of the finish rolling machine frame F6 is less than or equal to 1.5:1, the rolling force of the finish rolling machine frame F1-F6 is gradually reduced; and hot-rolled acid washing plate vibrating iron sheet is obtained. According to the process control method for the hot-rolled acid washing plate vibrating iron sheet, the vibrating iron sheet is not pressed, so that the problems of surface quality problems such as pits after acid washing are avoided.

Description

technical field [0001] The invention relates to the technical field of rolling technology, in particular to a process control method for a hot-rolled pickling plate vibrating iron sheet. Background technique [0002] Due to its processing technology characteristics of replacing cold with heat, hot-rolled pickled plate can greatly reduce the manufacturing cost of the product, and has a broad market application prospect. At the same time, the hot-rolled steel strip is directly supplied to customers after the pickling process, so extremely high surface quality is required, otherwise it can only be downgraded and changed. [0003] At that time, in the existing technology, the iron sheet of the roll system caused by the violent vibration of the roll was seriously pressed in, which was difficult to control, resulting in the hot-rolled thin-gauge pickling plate prone to oxidation pits and pitting defects after pickling, which could not meet the customer's use requirements . Cont...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a process control method for vibrating iron sheets of hot-rolled pickling plates, which solves or partially solves the serious pressing of the iron sheets of the roll system caused by the severe vibration of the rolls in the prior art, which causes the hot-rolled thin-spec pickling plates to be in the pickling process. After that, the technical problems of oxidation pits and pit defects are prone to occur

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