WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Search
 
Browse
 
Translate
 
Options
 
News
 
Login
 
Help
 
Machine translation
1. (WO1979000960) PROCESS FOR THE MANUFACTURE OF METAL JOINING PASTE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1979/000960    International Application No.:    PCT/US1979/000248
Publication Date: 15.11.1979 International Filing Date: 18.04.1979
IPC:
B23K 35/02 (2006.01), B23K 35/36 (2006.01)
Applicants:
Inventors:
Priority Data:
897931 21.04.1978 US
Title (EN) PROCESS FOR THE MANUFACTURE OF METAL JOINING PASTE
(FR) PROCEDE DE FABRICATION D"UNE PATE POUR L"ASSEMBLAGE DES METAUX
Abstract: front page image
(EN)A process for making metal joining paste, particularly suitable for precision soldering and brazing, which comprises preparing a paste vehicle by mixing together, at an elevated temperature, paste ingredients including solvent, flux and specialized additives, cooling said vehicle, and blending metal powder therewith. Blending preferably is subsequent to cooling, but can be simultaneous with cooling, though without significant exposure of the metal to the vehicle at elevated temperature. Cooling of the vehicle takes place under shock cooling conditions, such as to obtain a fine particle size suspension, and is to a final temperature inhibitive of significant reaction of metal powder with vehicle acidic constituents. The present invention provides increased viscosity control and suspension stability necessary for fine bore automatic dispensing of the paste.
(FR)Un procede de fabrication d"une pate a assembler les metaux, particulierement appropriee au soudage et au brasage de precision, comprend la preparation d"un vehicule pateux en melangeant, a une temperature elevee, des ingredients de pate comprenant un solvant, un fondant et des additifs speciaux, le refroidissement dudit vehicule, et le melange avec la poudre metallique. Le melange, de preference, se fait apres le refroidissement, mais peut se faire simultanement au le refroidissement, sans toutefois trop exposer le metal au vehicule a temperature elevee. Le refroidissement du vehicule se fait brusquement, de maniere a obtenir une suspension de fines particules et empecher qu"une reaction ne se produise entre la poudre metallique et les composants acides du vehicule. La presente invention permet d"obtenir un meilleur controle de la viscosite et une meilleure stabilite de la suspension necessaires a la distribution automatique de la pate a travers un petit orifice.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)