EP 3556936 A1 20191023 - METHOD FOR MANUFACTURING A STEEL-MADE YANKEE CYLINDER
Title (en)
METHOD FOR MANUFACTURING A STEEL-MADE YANKEE CYLINDER
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES AUS STAHL GEFERTIGTEN YANKEE-ZYLINDERS
Title (fr)
PROCÉDÉ DE FABRICATION D’UN CYLINDRE DE YANKEE EN ACIER
Publication
Application
Priority
SE 1850436 A 20180417
Abstract (en)
The invention relates to a method for manufacturing a steel-made Yankee cylinder. According to the invention is the Yankee cylinder divided into several cylindrical shell sections (2a,2b,2x) and these cylindrical shell sections are welded together in an aligned relation to each other, maintaining the roundness of the Yankee, by applying shorter mutually opposed weld seams in pairs along a circumferentially running weld joint. Each weld in a subsequently applied weld pair is preferably applied furthest away from the last weld in a precedingly applied weld pair in a sequential weld pattern. By this welding method is the roundness in the fast-revolving pressure vessel maintained, improving structural rigidity of the Yankee during operation.
IPC 8 full level
CPC (source: EP)
D21F 5/021 (2013.01); D21F 5/181 (2013.01)
Citation (applicant)
- US 9452498 B2 20160927 - KRASSER JOSEF [AT], et al
- US 5816528 A 19981006 - EKSTROEM GOERAN [SE], et al
- US 9511968 B2 20161206 - MALMQVIST PER-OLOF [SE]
- US 8959790 B2 20150224 - ANERUD JOHNNY [SE]
- US 5537756 A 19960723 - HAESSNER WINFRIED [DE], et al
Citation (search report)
- [A] WO 2012126603 A1 20120927 - ANDRITZ AG MASCHF [AT], et al
- [A] WO 2008105005 A1 20080904 - TOSCOTEC S P A [IT], et al
- [A] US 3029504 A 19620417 - NIELSEN EINER S
- [A] WO 2015000647 A1 20150108 - VOITH PATENT GMBH [DE]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3556936 A1 20191023; EP 3556936 B1 20200429; PL 3556936 T3 20200810
DOCDB simple family (application)
EP 18189484 A 20180817; PL 18189484 T 20180817