Method and installation for producing a hot rolled strip...

Details Method and installation for producing a hot rolled strip... Method and installation for producing a hot rolled strip...

B - Operations, Transporting

21

B

B21B 1/26 (2006.01) B21B 1/46 (2006.01) C21D 8/02 (2006.01) B21B 1/18 (2006.01) B21B 3/02 (2006.01) B21B 37/74 (2006.01) B21B 45/00 (2006.01) C21D 6/00 (2006.01)

Patent

CA 2471481

The invention relates to a method for producing rolled products from austenitic rust-resistant steels. In a first step, a product to be cast (6) is subjected to a rolling process in a rolling mill (13), and in a second step, said product is subjected to heat treatment for preventing susceptibility to corrosion, especially inter-crystalline corrosion caused by chrome carbide precipitation. The aim of the invention is to render the inventive method more cost-effective and energy-saving. To this end, the rolling heat is directly exploited for the heat treatment for preventing susceptibility to corrosion. The invention also relates to a corresponding installation.

L'invention vise à mettre au point, de manière économique en termes d'énergie et de coûts, un procédé de production de produits laminés à base d'aciers austénitiques inoxydables, selon lequel, dans une première étape, un produit de coulée (6) est soumis à une opération de laminage dans un train de laminoir (13) et, dans une seconde étape, il est prévu un traitement thermique pour éviter tout risque de corrosion, notamment en termes de corrosion intercristalline due à des dépôts de carbure de chrome. A cet effet, pour éviter tout risque de corrosion, le traitement thermique doit être effectué directement à partir de la chaleur de laminage. L'invention concerne également une installation correspondante.

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