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1. WO2022002973 - METHOD OF MANUFACTURING A STEEL STRIP AND COATED STEEL SHEET OBTAINABLE THEREBY

Publication Number WO/2022/002973
Publication Date 06.01.2022
International Application No. PCT/EP2021/067911
International Filing Date 29.06.2021
Chapter 2 Demand Filed 25.04.2022
IPC
C23C 2/00 2006.1
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
2Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
B21B 1/22 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
1Metal rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
22for rolling bands or sheets of indefinite length
B21B 1/42 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
1Metal rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
42for step-by-step or planetary rolling
C23C 2/02 2006.1
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
2Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
02Pretreatment of the material to be coated, e.g. for coating on selected surface areas
C23C 2/06 2006.1
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
2Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
04characterised by the coating material
06Zinc or cadmium or alloys based thereon
C23C 2/18 2006.1
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
2Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
14Removing excess of molten coatings; Controlling or regulating the coating thickness
16using fluids under pressure, e.g. air knives
18Removing excess of molten coatings from elongated material
CPC
B21B 1/227
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
1Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section
22for rolling ; plates, strips,; bands or sheets of indefinite length
227Surface roughening or texturing
B21B 1/28
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
1Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section
22for rolling ; plates, strips,; bands or sheets of indefinite length
24in a continuous ; or semi-continuous; process
28by cold-rolling ; , e.g. Steckel cold mill
B21B 2001/228
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
1Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section
22for rolling ; plates, strips,; bands or sheets of indefinite length
228skin pass rolling or temper rolling
B21B 2265/12
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
2265Forming parameters
12Rolling load or rolling pressure; roll force
B21B 2267/06
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
2267Roll parameters
02Roll dimensions
06Roll diameter
B21B 2267/10
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
2267Roll parameters
10Roughness of roll surface
Applicants
  • TATA STEEL IJMUIDEN B.V. [NL]/[NL]
Inventors
  • HENSEN, Guido Cornelis
  • MALLENS, Roel, Marinus, Maria
  • SLUIS, Freek
  • GRAVEMAKER, Jean-Paul
  • TOOSE, Edgar, Matthijs
Agents
  • GROUP INTELLECTUAL PROPERTY SERVICES
Priority Data
20183326.630.06.2020EP
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) METHOD OF MANUFACTURING A STEEL STRIP AND COATED STEEL SHEET OBTAINABLE THEREBY
(FR) PROCÉDÉ DE FABRICATION D'UNE BANDE D'ACIER ET TÔLE D'ACIER REVÊTUE POUVANT AINSI ÊTRE OBTENUE
Abstract
(EN) Method of manufacturing a steel strip, comprising the subsequent steps of hot rolling the strip into a hot rolled strip, cold rolling the hot rolled strip and hot dip coating the cold rolled strip with a Zn based coating by leading the strip through a bath comprising molten zinc and wiping the strip after said coating using a gas knife having a knife slot from which a wiping gas is projected and the steel strip is cold rolled to a final cold rolled thickness of between 0.40 mm and 1.00 mm in a multi-stand cold rolling mill wherein cold rolling, and coated steel sheet comprising a steel substrate provided with a hot dip metal coating.
(FR) L'invention concerne un procédé de fabrication d'une bande d'acier, comprenant les étapes suivantes consistant à laminer à chaud la bande en une bande laminée à chaud, à laminer à froid la bande laminée à chaud et à revêtir par immersion à chaud la bande laminée à froid avec un revêtement à base de Zn en amenant la bande dans un bain comprenant du zinc fondu et en essuyant la bande après ledit revêtement à l'aide d'une lame à gaz ayant une fente de couteau à partir de laquelle un gaz d'essuyage est projeté et la bande d'acier est laminée à froid à une épaisseur finale laminée à froid comprise entre 0,40 mm et 1,00 mm dans un laminoir à froid à cages multiples; le laminage à froid et une tôle d'acier revêtue comprenant un substrat en acier pourvu d'un revêtement métallique par immersion à chaud.
Latest bibliographic data on file with the International Bureau