EP 0001198 A1 19790321 - Process for the manufacture of articles by the thermoforming of aluminium or magnesium or of aluminium or magnesium base alloys.
Title (en)
Process for the manufacture of articles by the thermoforming of aluminium or magnesium or of aluminium or magnesium base alloys.
Title (de)
Verfahren zum Herstellen von Gegenständen aus Aluminium, Magnesium oder Legierungen auf Aluminium- oder Magnesiumbasis durch Warmverformung.
Title (fr)
Procédé de fabrication par thermoformage de pièces en aluminium ou magnésium ou en alliages à base d'aluminium ou de magnésium.
Publication
Application
Priority
- FR 7727533 A 19770905
- FR 7734521 A 19771110
Abstract (en)
[origin: ES472930A1] A process for producing thermoformed articles from thin-walled blanks composed of aluminum or magnesium alloys, the present invention particularly provides for forming a layer of alumina or magnesia on the surfaces of the respective aluminum or magnesium blank. The alumina or magnesia layers so formed are artificially formed in order to obtain desired thicknesses, the regular layers allowing ready removal of the articles from thermoforming molds. The present process is particularly intended for the production of thin-wall packaging members and motor vehicle components.
Abstract (fr)
Ce procédé consiste à thermoformer dans des moules (1) des ébauches (2) à paroi mince. Les problèmes de démoulage sont résolus grâce à une couche régulière d'alumine ou magnésie formée artificiellement à la surface de l'ébauche. Ce procédé trouvera ses principales applications dans les fabrications d'emballages à parois minces ainsi que celles de pièces pour l'automobile.
IPC 1-7
IPC 8 full level
B21D 22/20 (2006.01); B21D 26/055 (2011.01); B21J 1/06 (2006.01); C23C 22/00 (2006.01); C25D 11/02 (2006.01)
CPC (source: EP US)
B21D 22/201 (2013.01 - EP US); B21D 26/055 (2013.01 - EP US); C25D 11/02 (2013.01 - EP US); Y10S 72/70 (2013.01 - EP US)
Citation (search report)
- [A] GB 1251488 A 19711027
- [A] FR 2158536 A1 19730615 - ISC ALLOYS LTD
- [A] FR 2187450 A1 19740118 - ISC ALLOYS LTD [GB]
- [A] FR 717014 A 19311231 - VAW VER ALUMINIUM WERKE AG
- [A] WERKSTATT UND BETRIEB, vol. 109, nr. 9, September 1976, M}nchen (DE) Carl Hanser Verlag, J.A. WHITTAKER: "Superplastisches Umformen von Aluminium", pages 513-515
- [A] MACHINES PRODUCTION, 8 Septembre 1976, Softec, Boulogne, "Formage: un alliage superplastique concurrence sérieusement les alliages légers connus", pages 12-14
- [A] LIVRE de, S. Wernick et al: "The surface treatment and finishing of aluminium and its alloys", édition 4, vol. 1, 1972, Robert Draper Ltd., Teddington (GB) pages 34-35
Designated contracting state (EPC)
DE FR GB NL SE
DOCDB simple family (publication)
EP 0001198 A1 19790321; EP 0001198 B1 19800820; AT 358892 B 19801010; AT A636178 A 19800215; CA 1116475 A 19820119; CH 627669 A5 19820129; DE 2860234 D1 19801204; DK 385178 A 19790306; ES 472930 A1 19790216; IT 1098413 B 19850907; IT 7827091 A0 19780829; JP S5447859 A 19790414; JP S5650646 B2 19811130; LU 80174 A1 19790515; US 4250727 A 19810217
DOCDB simple family (application)
EP 78420003 A 19780726; AT 636178 A 19780901; CA 310495 A 19780901; CH 913778 A 19780830; DE 2860234 T 19780726; DK 385178 A 19780831; ES 472930 A 19780830; IT 2709178 A 19780829; JP 10697778 A 19780831; LU 80174 A 19780830; US 93387678 A 19780815