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1. (WO1992010323) SHIELD GAS WAVE SOLDERING
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1992/010323 International Application No.: PCT/CA1991/000399
Publication Date: 25.06.1992 International Filing Date: 13.11.1991
Chapter 2 Demand Filed: 13.03.1992
IPC:
B23K 1/008 (2006.01) ,B23K 1/08 (2006.01) ,B23K 3/06 (2006.01) ,H05K 3/34 (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
1
Soldering, e.g. brazing, or unsoldering
08
Soldering by means of dipping in molten solder
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
1
Soldering, e.g. brazing, or unsoldering
08
Soldering by means of dipping in molten solder
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
3
Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
06
Solder feeding devices; Solder melting pans
H ELECTRICITY
05
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
K
PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
3
Apparatus or processes for manufacturing printed circuits
30
Assembling printed circuits with electric components, e.g. with resistor
32
electrically connecting electric components or wires to printed circuits
34
by soldering
Applicants:
ELECTROVERT LTD. [CA/CA]; 1305 Industriel Boulevard LaPrairie, Quebec J5R 2E4, CA
Inventors:
DEAMBROSIO, Carlos, A.; CA
GILETA, John; CA
Agent:
FETHERSTONHAUGH & CO.; Suite 456 409 Granville Street Vancouver, British Columbia V6C 1H5, CA
Priority Data:
626,72813.12.1990US
Title (EN) SHIELD GAS WAVE SOLDERING
(FR) BRASAGE TENDRE A LA VAGUE A GAZ DE PROTECTION
Abstract:
(EN) A wave soldering apparatus and process occurs in an atmosphere which substantially excludes oxygen. By providing a gas blanket over the solder, reduction in dross occurs and improved soldering results avoiding the necessity of removing flux residues. Gas diffusers are provided on both sides of a solder wave in an enclosure, the diffusers are placed below the path of the element to be soldered and a further gas diffuser is positioned above the element to be soldered. The gas diffusers supply a calm gas blanket over the solder wave so no turbulent movement of gas occurs within the enclosure.
(FR) Appareil et procédé de brasage tendre à la vague utilisés dans une atmosphère sensiblement exempte d'oxygène. En plaçant un écran de gaz sur l'appareil de brasage, on obtient une diminution des déchets et des meilleurs résultats de brasage, et on peut éviter de devoir enlever des résidus de flux. Des diffuseurs de gaz sont placés des deux côtés d'une vague de brasage dans une enceinte, les diffuseurs étant placés en-dessous de la trajectoire de l'élément à braser, tandis qu'un autre diffuseur de gaz est placé au-dessus de l'élément à braser. Les diffuseurs de gaz diffusent un écran de gaz calme sur la vague de brasage, de sorte qu'il n'y a aucun mouvement turbulent de gaz dans l'enceinte.
Designated States: BR, CA, JP, KR
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0561794