A method for producing head element for heaters and head...

F - Mech Eng,Light,Heat,Weapons – 28 – D

Patent

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F28D 1/053 (2006.01) F28F 9/26 (2006.01) F28F 21/08 (2006.01)

Patent

CA 2451363

According to a method for producing head elements for heaters, a piece of sheet metal (1) is deep drawn and cut along the edge of an open side to obtain a hollow body (8) with larger and narrower sides (4,5, 14m15). An aperture (12) is made on each opposite larger side (4,5) of the hollow body, and threaded rings (26) are then applied around the lateral through apertures (12). Notches (16) are made on the opposite large sides (4,5), along the edge (9) of the open side (6), and then three cores (18) are introduced through the edge (9), so that a flange (17) around the notches (16) can be made by pressing, so as to close the sheet metal around the cores (18) widening the notches (16). After the cores (18) have been removed, the edge (9) is welded along the flange (17) of the widened notches (16), thus obtaining holes (21) separated from each other.

L'invention concerne un procédé de production d'éléments supérieurs pour radiateurs. Ce procédé consiste à réaliser un emboutissage profond et une coupe d'une partie de plaque de tôle, le long du bord d'un coté ouvert, pour obtenir un corps creux (8) présentant des côtés larges et des côtés étroits (4, 5, 14m15). Une ouverture (12) est effectuée sur chaque coté large opposé (4, 5) du corps creux, et des bagues filetées (26) sont ensuite appliquées au niveau des ouvertures latérales (12). Des encoches (16) sont effectuées sur les cotés larges opposés (4, 5), le long le bord (9) du coté ouvert (6), puis trois noyaux (18) sont introduits par le bord (9), de sorte qu'un rebord (17) entourant les encoches (16) peut se former par pression, de sorte à fermer la plaque de tôle autour des noyaux (18), pour élargir les encoches (16). Une fois les noyaux (18) retirés, le bord (9) est soudé le long du rebord (17) des encoches élargies (16) permettant ainsi d'obtenir des orifices (21) séparés les uns des autres.

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