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1. (WO2017203321) METHOD FOR PREPARING A PRECOATED SHEET AND ASSOCIATED INSTALLATION
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2017/203321 International Application No.: PCT/IB2016/053017
Publication Date: 30.11.2017 International Filing Date: 23.05.2016
IPC:
B23K 26/00 (2014.01) ,B23K 26/362 (2014.01) ,B23K 26/40 (2014.01) ,B23K 26/60 (2014.01) ,B23K 26/70 (2014.01) ,B23K 31/10 (2006.01) ,B23K 9/235 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
K
SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
26
Working by laser beam, e.g. welding, cutting, boring
[IPC code unknown for B23K 26/362]
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
K
SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
26
Working by laser beam, e.g. welding, cutting, boring
36
Removing material
40
taking account of the properties of the material involved
[IPC code unknown for B23K 26/60][IPC code unknown for B23K 26/70]
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
K
SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
31
Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups B23K1/-B23K28/193
10
relating to cutting or desurfacing
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
K
SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
9
Arc welding or cutting
235
Preliminary treatment
Applicants:
ARCELORMITTAL [LU/LU]; 24-26, Boulevard d'Avranches L-1160 Luxembourg, LU
Inventors:
VIERSTRAETE, René; FR
Agent:
DOMENEGO, Bertrand; FR
Priority Data:
Title (EN) METHOD FOR PREPARING A PRECOATED SHEET AND ASSOCIATED INSTALLATION
(FR) PROCÉDÉ DE PRÉPARATION D'UNE FEUILLE PRÉ-REVÊTUE ET INSTALLATION ASSOCIÉE
Abstract:
(EN) Method for preparing a precoated sheet (1 ) comprising: - providing a precoated sheet (1 ) comprising a metallic substrate provided with a precoating on at least one of its faces; - removing through laser ablation at least a portion of the precoating on said at least one face of the precoated sheet (1 ) in a removal zone (6), said ablation step being carried out in an installation (20). The installation (20) comprises at least one protective element (26) comprising a protective surface (28). During the ablation step, the protective surface (28) contacts the precoated sheet (1 ) in a contact area in register with the laser beam (22) as the laser beam (22) removes the portion of the precoating. A plane tangent to said protective surface (28) at the contact area forms a dihedral angle with the plane of the face (12) of the precoated sheet (1 ), this angle being strictly smaller than 90°.
(FR) L'invention concerne un procédé de préparation d'une feuille pré-revêtue (1) comprenant : - la fourniture d'une feuille pré-revêtue comprenant un substrat métallique doté d'un pré-revêtement sur au moins l'une de ses faces; - l'élimination par ablation laser d'au moins une partie du pré-revêtement sur ladite au moins une face de la feuille pré-revêtue (1) dans une zone d'élimination (6), ladite étape d'ablation étant mise en œuvre dans une installation (20). L'installation (20) comprend au moins un élément de protection (26) comprenant une surface de protection (28). Pendant l'étape d'ablation, la surface de protection (28) entre en contact avec la feuille pré-revêtue (1) dans une zone de contact en alignement avec le faisceau laser (22) lorsque le faisceau laser (22) élimine la partie du pré-revêtement. Un plan tangent à ladite surface de protection (28) au niveau de la zone de contact forme un angle dièdre avec le plan de la face (12) de la feuille pré-revêtue (1), cet angle étant strictement inférieur à 90°.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)