Process for online cut-to-length cutting production of continuous casting slabs for heavy plate mill

Abstract

The invention relates to a process for the online cut-to-length cutting production of continuous casting slabs for a heavy plate mill. The process comprises the following steps: long slab reception; span-transversing; width centering; length and temperature measurement; cut-to-length slab mark spraying; cut-to-length cutting; cutting burr removing; unloading; and storing, wherein three pairs of flame cutting machines are distributed in a series-connection manner on the cutting line. Accordingly, the process of the invention is capable of simultaneously cutting two long slabs on-line according to various requirements for cut-to-length cutting; the process of the invention has the advantages of high production efficiency and small equipment occupied area; the cut-to-length cutting procedure has little impact on the main production line for continuous casting and heavy-plate milling; the process is capable of carrying out the mixed cutting process on cold and hot slabs, thus being favoring for the hot-loading and hot-feeding processes of slabs. Accordingly, the process of the invention is widely applicable to the online cut-to-length cutting production of the continuous casting slabs for the heavy plate plant.

Description

technical field [0001] The invention relates to an on-line fixed-length cutting production process for a continuous casting slab used in a thick plate rolling mill. Through the continuous production method, the continuous casting long slab input by the steel plant through the roller table is cut into the fixed-length slab required by the thick plate rolling mill, which shortens the storage time of the slab and realizes the hot charging of the continuous casting slab. The continuous casting slabs of different temperatures and specifications are mixed with high-efficiency cut-to-length production process. Background technique [0002] With the advancement of continuous casting technology, continuous casting slabs are mainly used as raw materials for heavy plate factories. When continuous casting machines cast slabs, the cutting of the length of the slabs must match the casting speed of the continuous casting machine. The length is usually in the range of 6-10m. When the slab ...

AI Technical Summary

Problems solved by technology

The cut-to-length cutting line is connected with the slab charging roller table through a traverse device, and the deburring machine is installed on the heating furnace charging roller table. If the deburring machine fails or the deburring effect is not good, the slab needs to be processed offline, which affects Slab charging and main rolling line production, this arrangement makes long billet cut-to-length cutting line and main rolling line lack of flexibility, which is not conducive to production

The maximum length of the long billet in the plant is limited to 9m, so that the ratio of cutting one long billet into three cut-to-length billets will decrease, which will help improve the capacity of the secondary cutting line, but cannot meet the requirements of the 1.8 million-ton continuous production capacity of the double-stand thick plate rolling mill. Demand for cast slabs, a large number of cold-loaded slabs still need to be manually cut off-line

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