Patent · US Active

Method and device for descaling a metal strip

US8728244B2 · kind B2 · utility

1Cited by

3References

6Claims

0Family size

Assignee

SMS SIEMAG AG · DE

Inventors

Holger Behrens · Reutlingen, DE
Rolf Brisberger · Issum, DE
Klaus Frommann · Mülheim an der Ruhr, DE
Matthias Kretschmer · Walldorf, DE
Rüdiger Zerbe · Neuss, DE
Evgeny Stepanovich Senokosov · Saint Petersburg, RU
Andrei Evgenievich Senokosov · Saint Petersburg, RU

Key dates

Filing date	Apr 14, 2011
Grant date	May 20, 2014
Priority date	—
Expiry date	Apr 14, 2031

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB21B45/06
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A method for descaling a metal strip, in which the metal strip is guided in a direction of conveyance through at least two plasma descaling units, in which it is subjected to a plasma descaling, where the plasma descaling is followed directly or indirectly by an operation in which the metal strip is coated with a coating metal by hot dip galvanizing of the metal strip. The metal strip is coated with the coating metal by a vertical passage process. The coating metal is retained as a coating bath in a coating tank by an electromagnetic seal. The metal strip preheated by the plasma descaling is guided, without exposure to air, from the plasma descaling into a protective gas atmosphere of a continuous furnace necessary for the coating.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.