Process for producing thin-hot rolled strip

Details Process for producing thin-hot rolled strip Process for producing thin-hot rolled strip

1998-07-22

2000-02-15

Echols, P. W.

Metal working

Method of mechanical manufacture

Combined manufacture including applying or shaping of fluent...

72202, 72229, B21B 2706

Patent

active

060238356

ABSTRACT:
The invention relates to a process for producing thin hot-rolled steel strip with a final thickness of <1 mm from strip-cast feedstock in sequential steps, including surface descaling a cast feedstock, rolling the feedstock in six passes in a tandem Steckel roll line, coiling and uncoiling the feedstock after its first and second passage through the tandem Steckel roll line in furnaces arranged on the entry and exit sides of the tandem Steckel roll line. After a third passage through the Steckel roll line, the feedstock is coiled up in an exit-side coiling device having two furnaces one atop the other, which serves as a storage device for the roughed strip. Simultaneously with the coiling of the first strip, a second strip is uncoiled from the storage device. The cropped front end of the second strip is welded to the cropped rear end of the already uncoiled roughed strip. After passing through a second roughed strip storage device, the roughed strip that has been welded into an endless strip is fed to the finishing train, where it is reduced to the desired finished strip thickness.

REFERENCES:
patent: 5540074 (1996-07-01), Smith et al.
patent: 5689991 (1997-11-01), Kircher
patent: 5743125 (1998-04-01), Kneppe et al.
patent: 5771732 (1998-06-01), Kramer et al.

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