Précédent
Suivant
Brevet : EP0970256 - LAMINAGE A CHAUD DE FEUILLARD D'ACIER
Titre
LAMINAGE A CHAUD DE FEUILLARD D'ACIER
N° et date de publication de la demande
EP0970256 - 12/01/2000
Type de la demande
A1
N° et date de dépôt
EP98912456.5 - 07/03/1998
N° et date de priorité
DE19712616 - 26/03/1997
Classification CPC
B21B 1/26 ; B21B 1/46 ; B21B2201/02 ; B21B2201/04 ; B21B2201/16 ; C21D 8/0226 ; C21D 8/0231 ; C21D 8/0226 ; C21D 8/0236 ; C21D 9/54 ; C22C 38/02 ; C22C 38/04 ; C22C 38/001 ; C21D 8/0273 ; C21D2211/005 ; C21D2211/001 ; B21B 1/26 ; B21B 1/46 ; C21D 8/0226 ; C21D 8/0231 ; B21B2201/04 ; B21B2201/02 ; B21B2201/16
Famille de brevets
EP0970256A1 ; KR20010005742A ; JP2001520707A ; AU6728698A ; US6284069B1 ; ATE199101T1 ; CA2284635A1 ; GR3035532T3 ; WO9842881A1 ; DE19712616A1 ; ES2155285T3
Abrégé
The invention relates to a process for producing strips of homogenous structures and characteristics made of non-alloyed and low-alloyed steel by continuous hot rolling in several roll passes in the austenitic region and subsequently in the ferritic region, as well as coiling. The invention is characterised in that continuous-cast strip and/or strip rough rolled in the austenitic region, starting with a temperature T>=Ar3+30° C., with a total degree of deformation of eh>=30% is rolled in two or several roll passes in the austenitic region and in that the rolling stock is intensively cooled after every roll pass until the ferritic transformation has been completed, after which the rolling stock is end rolled to final thickness in the ferritic range in several passes with a total degree of deformation eh>=60%.
INTERVENANTS
Déposant
THYSSEN STAHL AG (THYSSEN STAHL AKTIENGESELLSCHAFT) - DE
Titulaire
Thyssen Krupp Stahl AG
Inventeur
PIRCHER HANS (PIRCHER, HANS) - DE
ESPENHAHN MANFRED (ESPENHAHN, MANFRED) - DE
KAWALLA RUDOLF (KAWALLA, RUDOLF) - DE
WOLPERT WALDEMAR (WOLPERT, WALDEMAR) - DE
Mandataire
CABINET LAVOIX - 2 PLACE D ESTIENNE D ORVES - 75441 PARIS CEDEX 09 - FR - N° Siren : 331829754
STATUT EN FRANCE : Dossier déchu
Délivrance
07/02/2001
Remise de traduction du brevet
06/04/2001 (BOPI 2001-14)
Date de constatation de déchéance
-
30/11/2017 (BOPI 2017-52)
Dernière annuité payée
24/03/2016
Quantième- N° de l'annuité payée
19
Date de paiement de la prochaine annuité
31/03/2017
