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

A medium-thin slab continuous casting and production method technology, which is applied in the direction of metal rolling, can solve the problems of long rolling time, small buffer space between continuous casting machine and heating furnace, and high casting speed, so as to achieve sufficient production capacity and production Organizational flexibility and the effect of improving product quality

A medium-thin slab continuous casting and production method technology, which is applied in the direction of metal rolling, can solve the problems of long rolling time, small buffer space between continuous casting machine and heating furnace, and high casting speed, so as to achieve sufficient production capacity and production Organizational flexibility and the effect of improving product quality

CN1483521AInactive Publication Date: 2004-03-24ANGANG STEEL CO LTD
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Embodiment Construction

[0040] The present invention is specifically implemented in the 1700 medium and thin plate continuous casting and rolling production line (ASP), using a 100-135mm thick medium and thin slab R5m casting machine, two walking beam heating furnaces with long-stroke steel loading machines, two rolls and four rolls There is one reversible roughing mill, 6 stands of controlled-rolling and controlled-cooling finishing mill with roll bending and rolling device, laminar flow cooling and 2 downcoilers in front of the finishing mill, including the following Process steps:

[0041] 1. Continuous casting billet

[0042]90t converter steelmaking molten steel is transported to the casting machine in 6 minutes in a 100t insulation tank, the R5m casting speed is 3.5m / s, the casting billet is 100~135mm×900~1550mm×12.9mm~15.6m, one casting machine and one stream, the weight of the casting machine body 345.8t, the height of the workshop is low, and the height of the crane track beam is 24.5m.

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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...

Claims

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Application Information

Patent Timeline
24 Mar 2004
Publication
CN1483521A
IPC
B21B1/46
Inventors
刘玠; 孙一康