MA42529A - Procédé de fabrication d'une pièce apte à la phosphatation à partir d'une tôle d'acier revêtue d'un revêtement métallique à base d'aluminium - Google Patents

Procédé de fabrication d'une pièce apte à la phosphatation à partir d'une tôle d'acier revêtue d'un revêtement métallique à base d'aluminium

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Publication number
MA42529A
MA42529A MA42529A MA42529A MA42529A MA 42529 A MA42529 A MA 42529A MA 42529 A MA42529 A MA 42529A MA 42529 A MA42529 A MA 42529A MA 42529 A MA42529 A MA 42529A
Authority
MA
Morocco
Prior art keywords
weight
blank
steel sheet
coated
aluminum
Prior art date
Application number
MA42529A
Other languages
English (en)
Other versions
MA42529B1 (fr
Inventor
Christian Allely
Grégory Leuillier
Amorim Tiago Machado
Original Assignee
Arcelormittal
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Arcelormittal filed Critical Arcelormittal
Publication of MA42529A publication Critical patent/MA42529A/fr
Publication of MA42529B1 publication Critical patent/MA42529B1/fr

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    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/10—Alloys based on aluminium with zinc as the next major constituent
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    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C21D1/673—Quenching devices for die quenching
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0257—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment with diffusion of elements, e.g. decarburising, nitriding
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    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
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    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite

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  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

La présente invention concerne un procédé de fabrication d'une pièce durcie revêtue d'un revêtement apte à la phosphatation, le procédé comprenant les étapes suivantes consistant à : a) fournir une tôle d'acier pré-revêtue d'un revêtement métallique comprenant de 4,0 à 20,0 % en poids de zinc, de 1,0 à 3,5 % en poids de silicium, éventuellement de 1,0 à 4,0 % en poids de magnésium et éventuellement d'autres éléments choisis parmi pb, ni, zr, ou hf, la teneur en poids de chaque élément additionnel étant inférieure à 0,3 % en poids, le reste étant constitué d'aluminium, des impuretés inévitables et d'éléments résiduels ; b) découper la tôle d'acier revêtue pour obtenir une ébauche ; c) traiter thermiquement l'ébauche à une température comprise entre 840 et 950 °c pour obtenir une microstructure complètement austénitique dans l'acier ; d) transférer l'ébauche dans un outil de presse ; e) soumettre l'ébauche à un formage à chaud pour obtenir une pièce ; f) refroidir la pièce obtenue à l'étape e) de manière à obtenir une microstructure d'acier martensitique ou martensito-bainitique ou constitué d'au moins 75 % de ferrite équiaxe, de 5 à 20 % de martensite et une quantité inférieure ou égale à 10 % de bainite.
MA42529A 2015-07-30 2016-07-29 Procédé de fabrication d'une pièce apte à la phosphatation à partir d'une tôle d'acier revêtue d'un revêtement métallique à base d'aluminium MA42529B1 (fr)

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Application Number Priority Date Filing Date Title
PCT/IB2015/001285 WO2017017485A1 (fr) 2015-07-30 2015-07-30 Procédé de fabrication d'une pièce phosphatable à partir d'une tôle d'acier revêtue d'un revêtement métallique à base d'aluminium
PCT/IB2016/001076 WO2017017521A1 (fr) 2015-07-30 2016-07-29 Procédé de fabrication d'une pièce apte à la phosphatation à partir d'une tôle d'acier revêtue d'un revêtement métallique à base d'aluminium

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MA42529A true MA42529A (fr) 2018-06-06
MA42529B1 MA42529B1 (fr) 2021-04-30

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JP (1) JP6628863B2 (fr)
KR (1) KR102094089B1 (fr)
CN (2) CN110592516B (fr)
BR (1) BR112018000460B8 (fr)
CA (1) CA2991549C (fr)
ES (1) ES2864840T3 (fr)
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MA (1) MA42529B1 (fr)
MX (1) MX2018001303A (fr)
PL (1) PL3329029T3 (fr)
RU (1) RU2682508C1 (fr)
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WO (2) WO2017017485A1 (fr)

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CN107923024A (zh) 2018-04-17
BR112018000460B1 (pt) 2022-02-22
WO2017017521A1 (fr) 2017-02-02
CA2991549A1 (fr) 2017-02-02
JP6628863B2 (ja) 2020-01-15
ES2864840T3 (es) 2021-10-14
BR112018000460B8 (pt) 2022-03-15
MA42529B1 (fr) 2021-04-30
PL3329029T3 (pl) 2021-09-20
US11414737B2 (en) 2022-08-16
BR112018000460A2 (pt) 2018-09-11
US20220356552A1 (en) 2022-11-10
EP3329029A1 (fr) 2018-06-06
JP2018527461A (ja) 2018-09-20
CN107923024B (zh) 2019-12-17
CA2991549C (fr) 2021-03-30
CN110592516A (zh) 2019-12-20
WO2017017521A8 (fr) 2018-02-22
MX2018001303A (es) 2018-04-30
US20180216218A1 (en) 2018-08-02
UA119406C2 (uk) 2019-06-10
EP3329029B1 (fr) 2021-03-24
KR20180022929A (ko) 2018-03-06
KR102094089B1 (ko) 2020-03-27
RU2682508C1 (ru) 2019-03-19
WO2017017485A1 (fr) 2017-02-02
CN110592516B (zh) 2021-10-29

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