Method for continuous casting, continuoccs rolling intermediate and thin sheet blanket

Abstract

The production method of sheet billet conticasting tandem-rolling coil sheet is characterized by that said invention adopts the following technical measures: using conticasting machine and making pulling rate of casting blank low, and making the blank material have reasonable section; compactly arranging conticasting machine and heating furnace, making the conticasting blank output roller conveyer and inlet roller conveyer of heating furnace have double purpose, making inlet temp. of casting blank be above 900 deg.C; adopting double furnace and hating; and adopting small-cross charging and tapping process; two-high reversing rougher for three passes, four-high reversing rougher for one pass; and adopting thermal coiler box process of workpiece so as to raise coil sheet quality and reduce its production cost.

Description

technical field

[0001] The invention relates to a production method of continuous casting and rolling coils of medium and thin slabs. In particular, it relates to the production process of medium-thin slab continuous casting and continuous rolling strip steel of carbon steel and low alloy steel, and belongs to the technical field of metallurgical metal pressure processing. Background technique

[0002] At present, the traditional production process of continuous hot-rolled strip steel has the advantages of complete varieties, high output, flexible production, and large product compression ratio. Steelmaking by converter, continuous casting of 200mm-250mm thick slab, flame cutting, step-by-step Heating furnace heating, descaling, rolling by roughing mill, shearing, descaling, rolling by finishing mill, laminar cooling, coiling and coiling. The main disadvantages are: heavy weight of casting machine equipment, long rolling line, workshop The building is tall, occupies a large...