EP 4299784 A1 20240103 - METHOD AND DEVICE FOR APPLYING A FILM TO A FLAT STEEL PRODUCT
Title (en)
METHOD AND DEVICE FOR APPLYING A FILM TO A FLAT STEEL PRODUCT
Title (de)
VERFAHREN UND VORRICHTUNG ZUM AUFBRINGEN EINER SCHICHT AUF EIN STAHLFLACHPRODUKT
Title (fr)
PROCÉDÉ ET DISPOSITIF D'APPLICATION D'UNE COUCHE SUR UN PRODUIT PLAT EN ACIER
Publication
Application
Priority
EP 22182311 A 20220630
Abstract (en)
[origin: WO2024002813A1] The invention relates to a device (150) for applying a layer onto a flat steel product (100), comprising: - a molten zinc alloy bath (11) having an entry side (E) and an exit side (A); - an air-knife device (14) which comprises at least one knife-edge gap and which is located in the region of the exit side (A) in such a way that the layer which is still in liquid form on the flat steel product (100) can be blown off by means of gas exiting through the knife-edge gap. The device (150) is designed to carry out at least one of the following adjustments: - raising the bath temperature of the molten alloy bath (11) if the current local absolute humidity decreases, and vice versa, and/or - reducing the width of the knife-edge gap if the current local absolute humidity decreases, and vice versa, and/or - reducing the distance between the knife-edge gap and the side of the flat steel product (100) if the current local absolute humidity decreases, and vice versa, and - automatically adjusting the flow rate of the gas in order to keep the target thickness of the layer to be applied substantially constant.
IPC 8 full level
C23C 2/06 (2006.01); C23C 2/00 (2006.01); C23C 2/14 (2006.01); C23C 2/16 (2006.01); C23C 2/18 (2006.01); C23C 2/20 (2006.01)
CPC (source: EP)
C23C 2/003 (2013.01); C23C 2/06 (2013.01); C23C 2/14 (2013.01); C23C 2/16 (2013.01); C23C 2/18 (2013.01); C23C 2/20 (2013.01); C23C 2/50 (2022.08); C23C 2/51 (2022.08); C23C 2/52 (2022.08); C23C 2/525 (2022.08)
Citation (applicant)
- WO 2014033153 A1 20140306 - VOESTALPINE STAHL GMBH [AT]
- EP 0172682 B1 19890201
- JP 2020100886 A 20200702 - NIPPON STEEL CORP
- EP 13826634 A 20131220
- JP 2008256208 A 20081023 - VOLVO CONSTR EQUIP AB
- C.V. TU ET AL.: "Experimental Thermal and Fluid Science", vol. 16, 1996, ELSEVIER SCIENCE INC., article "Wall Pressure and Shear Stress Measurements Beneath an Impinging Je", pages: 364 - 373
Citation (search report)
- [XAI] EP 0172682 A1 19860226 - ARMCO INC [US]
- [XAI] DE 1521405 A1 19690821 - NAT STEEL CORP
- [XAI] DE 3933244 C1 19900613
- [A] DE 2709551 A1 19780907 - INLAND STEEL CO
- [A] WO 2014033153 A1 20140306 - VOESTALPINE STAHL GMBH [AT]
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
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DOCDB simple family (application)
EP 22182311 A 20220630; EP 2023066778 W 20230621