Processing

Please wait...

Settings

Settings

Goto Application

1. WO2020141147 - ALUMINUM-BASED COATING FOR FLAT STEEL PRODUCTS FOR PRESS MOLD HARDENING COMPONENTS, AND METHOD FOR PRODUCING SAME

Publication Number WO/2020/141147
Publication Date 09.07.2020
International Application No. PCT/EP2019/087067
International Filing Date 27.12.2019
IPC
C23C 2/12 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
12Aluminium or alloys based thereon
C23C 2/26 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
26After-treatment
C23C 2/40 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
34characterised by the shape of the material to be treated
36Elongated material
40Plates; Strips
CPC
C21D 1/00
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
1General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
C21D 1/26
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
1General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
26Methods of annealing
C23C 2/12
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
12Aluminium or alloys based thereon
C23C 2/26
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
26After-treatment
C23C 2/28
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
26After-treatment
28Thermal aftertreatment, e.g. treatment in oil bath
C23C 2/40
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
34characterised by the shape of the material to be treated
36Elongated material
40Plates; Strips
Applicants
  • SALZGITTER FLACHSTAHL GMBH [DE]/[DE]
Inventors
  • DEBEAUX, Marc
  • LUTHER, Friedrich
  • KOLL, Thomas
Agents
  • MOSER GÖTZE & PARTNER PATENTANWÄLTE MBB
Priority Data
10 2019 100 140.404.01.2019DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) ALUMINIUMBASIERTE BESCHICHTUNG FÜR STAHLFLACHPRODUKTE ZUR PRESSFORMHÄRTUNG VON BAUTEILEN UND VERFAHREN ZUR HERSTELLUNG HIERZU
(EN) ALUMINUM-BASED COATING FOR FLAT STEEL PRODUCTS FOR PRESS MOLD HARDENING COMPONENTS, AND METHOD FOR PRODUCING SAME
(FR) REVÊTEMENT À BASE D'ALUMINIUM POUR DES PRODUITS PLATS EN ACIER POUR LE DURCISSEMENT DANS LE MOULE DE PIÈCES ET PROCÉDÉ POUR LES FABRIQUER
Abstract
(DE)
Die Erfindung betrifft eine aluminiumbasierte Beschichtung eines Stahlflachprodukts, wobei die Beschichtung einen im Schmelztauchverfahren aufgebrachten, aluminiumbasierten Überzug mit 1,8 bis 15 Massenprozent Silizium, vorteilhaft mit 5 bis 13 Massenprozent Silizium, noch vorteilhafter mit 8 bis 11 Massenprozent Silizium, umfasst. Um eine aluminiumbasierte Beschichtung eines Stahlflachprodukts, insbesondere zur Pressformhärtung von Bauteilen, anzugeben, die bei einer Erwärmung in einem Ofen verkürzte, minimal notwendige Ofenverweilzeiten und ein ausreichend großes Prozessfenster bietet, wird vorgeschlagen, dass die Oberfläche der Beschichtung vor der Glühbehandlung einen Absorptionsgrad für Wärmestrahlung zwischen 0,35 und 0,95 aufweist, wobei der Absorptionsgrad auf eine Ofentemperatur im Bereich von 880 bis 950 °C während der austenitisierenden Glühbehandlung bezogen ist. Des Weiteren wird ein verbessertes Verfahren zur Herstellung eines Stahlflachprodukts mit einer aluminiumbasierten Beschichtung, ein kostengünstiges Verfahren zur Herstellung von pressgehärteten Bauteilen aus derartigen Stahlflachprodukten und ein pressgehärtetes Bauteil aus derartigen Stahlflachprodukten angegeben.
(EN)
The invention relates to an aluminum-based coating of a flat steel product. The coating comprises an aluminum-based coating which is applied in a hot-dipping method and comprises 1.8 to 15 mass.% of silicon, preferably 5 to 13 mass.% of silicon, more preferably 8 to 11 mass.% of silicon. The aim of the invention is to provide an aluminum-based coating for a flat steel product, in particular for press mold hardening components, said coating offering a shortened required minimum oven dwell time and a sufficiently large processing window when heating in an oven. This is achieved in that the surface of the coating has a degree of absorption for thermal radiation ranging between 0.35 and 0.95 prior to an annealing treatment, wherein the degree of absorption relates to an oven temperature ranging from 880 to 950 °C during the austenitizing annealing treatment. The invention additionally relates to an improved method for producing a flat steel product with an aluminum-based coating, to an inexpensive method for producing press-hardened components from such flat steel products, and to a press-hardened component made of such flat steel products.
(FR)
L'invention concerne un revêtement à base d'aluminium d'un produit plat en acier, le revêtement comprenant un enrobage à base d'aluminium appliqué au moyen d'un procédé de trempage en bain de matière en fusion, comportant de 1,8 à 15 pour cent en masse de silicium, avantageusement comportant de 5 à 13 pour cent en masse de silicium, plus avantageusement encore comportant de 8 à 11 pour cent en masse de silicium. Pour permettre l'obtention d'un revêtement à base d'aluminium d'un produit plat en acier, en particulier pour permettre un durcissement de pièces dans le moule qui garantit, pour le chauffage dans un four, des temps de séjour en four nécessaires minimaux raccourcis et une fenêtre de processus suffisamment grande, la surface du revêtement avant le traitement de recuit présente un degré d'absorption du rayonnement thermique compris entre 0,35 et 0,95, le degré d'absorption se rapportant à une température de four dans la plage de 880 à 950 °C pendant le traitement de recuit austénitisant. En outre, l'invention concerne un procédé amélioré pour la préparation d'un produit plat en acier doté d'un revêtement à base d'aluminium, un procédé économique pour la préparation de pièces durcies dans le moule à partir de tels produits plats en acier et une pièce durcie dans le moule obtenue à partir de tels produits plats en acier.
Also published as
RU2021110151
Latest bibliographic data on file with the International Bureau