Global Patent Index - EP 1838470 A1

EP 1838470 A1 2007-10-03 - METHOD FOR THE COLD ROLLING OF METALLIC ROLLED STOCK

Title (en)

METHOD FOR THE COLD ROLLING OF METALLIC ROLLED STOCK

Title (de)

VERFAHREN ZUM KALTWALZEN VON METALLISCHEM ROHMATERIAL

Title (fr)

METHODE POUR LE LAMINAGE D'UN PRODUIT SEMI-LAMINE METALLIQUE

Publication

EP 1838470 A1 (EN)

Application

EP 06700773 A

Priority

  • EP 2006000070 W
  • DE 102005001806 A

Abstract (en)

[origin: CN101102856A] The invention is based on a known method for the cold rolling of metallic rolled stock (4) , which for plastic deformation enters a roll gap (3) formed between oppositely rotating rolls (1, 2) on a run-in side and leaves the roll gap on a run-out side, deformation heat that is produced being removed by supplying an industrial gas which is at a lower temperature than the rolled stock. In order on this basis to provide a cold rolling method with which, on the one hand, corrosion of the surfaces of the rolled stock and the surfaces of the rolls in the region of the roll .gap is effectively prevented and with which, on the other hand, condensation of moisture on the rolls and a reduction of the oxygen content of the ambient air of relevance to health as a result of the supply of large amounts of inert gas are avoided, it is proposed according to the invention that a measured value for the surface temperature of at least one of the rolls is determined, and that the supply of industrial gas is set on the basis of the measured value.

IPC 8 full level (invention and additional information)

B21B 27/10 (2006.01); B21B 45/02 (2006.01)

CPC (invention and additional information)

B21B 37/32 (2013.01); B21B 27/10 (2013.01); B21B 9/00 (2013.01); B21B 38/006 (2013.01); B21B 2001/221 (2013.01); B21B 2027/103 (2013.01); B21B 2045/0212 (2013.01)

Citation (search report)

See references of WO 2006074875A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

EPO simple patent family

DE 102005001806 A1 20060720; BR PI0606654 A2 20090707; CN 101102856 A 20080109; EP 1838470 A1 20071003; WO 2006074875 A1 20060720

INPADOC legal status


2009-12-30 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20090710

2008-05-07 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'E

2008-05-07 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: AIR LIQUIDE DEUTSCHLAND GMBH

2008-04-16 [DAX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT (TO ANY COUNTRY) DELETED

2007-10-03 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20070813

2007-10-03 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR