Abstract:
Device for soldering a printed board, which has a nozzle (14a) provided in a solder tank (14) containing molten solder so as to form a molten solder fountain (15), printed board conveyor (25) passing a printed board (17) through the solder fountain (15) to solder a chip (26) onto the printed board (17), and a vibration applying unit (22) for applying vibrations to the printed board (17) as the board passes through the solder wave (15).
Abstract:
A dual solder layer for fluidic self assembly, an electrical component substrate, and method employing same is described. The dual solder layer comprises a layer of a self-assembly solder disposed on a layer of a base solder which is disposed on the solder pad of an electrical component substrate. The self-assembly solder has a liquidus temperature less than a first temperature and the base solder has a solidus temperature greater than the first temperature. The self-assembly solder liquefies at the first temperature during a fluidic self assembly method to cause electrical components to adhere to the substrate. After attachment, the substrate is removed from the bath and heated so that the base solder and self-assembly solder combine to form a composite alloy which forms the final electrical solder connection between the component and the solder pad on the substrate.
Abstract:
Die Erfindung betrifft eine 1.Vorrichtung zum Selektivlöten aufweisend einen Behälter (10) für flüssiges Lot, der ein sog. Lotbad (9) enthält, mit einem Lotkanal (2) und mindestens einer auf den Lotkanal (2) aufgesetzten Düse (4) und einer Lotpumpe zum unter Druck Setzen von flüssigem Lot (1) im Lotkanal (2), dadurch gekennzeichnet, dass der Lotkanal (2) von einer vertikal bewegbaren Haube (5) umgeben ist, die in das Lotbad (9) eintaucht oder anderweitig zur Oberfläche des Lotbades (9) abgedichtet ist und die für jede Düse (4) einen Durchbruch (7) aufweist, und mindestens eine Eintragsvorrichtung (6) für Schutz- und/oder Aktivgas unter der Haube (5) vorgesehen ist, wobei Strömungsbleche (8) an der Haube (5) angebracht sind, die sich von der Haube im wesentlichen abwärts Richtung Lotbad erstrecken. Desweiteren betrifft die Erfindung ein Verfahren zum Selektivlöten.
Abstract:
A dual solder layer for fluidic self assembly, an electrical component substrate, and method employing same is described. The dual solder layer comprises a layer of a self-assembly solder (12) disposed on a layer of a base solder (14) which is disposed on the solder pad (16) of an electrical component substrate(18). The self-assembly solder (12) has a liquidus temperature less than a first temperature and the base solder (14) has a solidus temperature greater than the first temperature. The self-assembly solder (12) liquefies at the first temperature during a fluidic self assembly method to cause electrical components (10) to adhere to the substrate (18). After attachment, the substrate(18) is removed from the bath (20) and heated so that the base solder (14) and self-assembly solder (12) combine to form a composite alloy (22) which forms the final electrical solder connection between the component (10) and the solder pad (16) on the substrate (18).
Abstract:
An end processing method for processing an end of an electric cable (11) including a conductor (12) made from aluminum or an aluminum alloy and a sheath (13) covering the conductor (12) is provided. The end processing method includes steps of: removing an end portion of the sheath (13) to expose an end portion (16) of the conductor (12); immersing the a part of the exposed end portion (16) of the conductor (12) into molten solder to coat the immersed part of the exposed end portion of the conductor (12) with solder (14); providing a heat shrinkable tube (15) through which the conductor (12) is inserted so that a remaining portion (14a) of the conductor (12) which is not coated with solder (14) is covered by the heat shrinkable tube (15); and shrinking the heat shrinkable tube (15) by heating the heat shrinkable tube (15) so as to be close contact with the conductor (12) and the sheath (13).