摘要:
A method for manufacturing a brazed part is disclosed that includes coating a substrate surface to be joined by first cold spraying a braze filler metal powder upon the surface to clean the surface followed by further spray the powder to form a coating layer of a braze alloy upon the surface. The coated surface is assembled with another surface to be joined and brazed together to form the brazed part. The substrate and braze alloy may be nickel-based super alloy materials.
摘要:
A method for the attachment of solder powder includes the steps of treating an exposed metallic surface of an electronic circuit board with a tackif ier compound, thereby imparting tackiness to the metallic surface to form a tacky part, and supplying the tacky part with a solder powder slurry suspended in a liquid, thereby inducing attachment of the solder powder. A method for the production of a soldered electronic circuit board, includes the steps of treating an exposed metallic surface of an electronic circuit board with a tackifier compound, thereby imparting tackiness to the metallic surface to form a tacky part, supplying the tacky part with a solder powder slurry suspended in a liquid, thereby inducing attachment of the solder powder, and thermally fusing the attached solder powder, thereby forming a circuit .
摘要:
A jetting device and a method for improving the performance of the jetting device for jetting droplets of viscous medium onto a substrate. The jetting device comprises a jetting outlet through which said droplets are jetted. The jetting device further comprises a wall located at the jetting outlet, downstream of the jetting outlet seen in the jetting direction. The wall is provided with an orifice through which jetted droplets are permitted to pass through. A gaseous flow is provided within said space past the jetting outlet such that an adverse effect on the performance of the jetting device is prevented, the adverse effect resulting from the accumulation of viscous medium residue at the jetting outlet.
摘要:
Eine Vorrichtung zum Aufbringen von Lotkugeln auf ein Sub-strat (7, 9) und zum Umschmelzen der Lotkugeln auf Lötstel-len (6) des Substrats (7, 9) hat eine Kapillare (3) zum Zuführen einer Lotkugel (5) zu der Lötstelle (6) und zum Pla-zieren der Lotkugel (5) am freien Ende (4) der Kapillare (3) gegenüber der Lötstelle, eine Einrichtung zum Zuführen von Wärme zu der Lotkugel (5), um diese umzuschmelzen, und eine Andrückvorrichtung (10) zum Niederhalten des Substrats (7, 9), um zu verhindern, daß das Substrat (7, 9) bei dem Pla-zieren und Umschmelzen der Lotkugel (5) federt.
摘要:
The invention relates to a device for positioning a tool (1) in relation to a workpiece (6). Said device controls drives (2, 3, 4) in relation to three spatial axes (x, y, z) by means of two cameras (10, 11). The first camera (10) records an image essentially along a spatial axis (y), and the other camera (11) is oriented essentially perpendicularly to a surface (8) of the workpiece.
摘要:
A method of printing solder paste comprising a mixture of metal solder beads or particles and a flux onto a circuit board (PCB) or other electronic component, comprises storing the metal solder beads or particles separately from the flux until shortly before needed for printing and then bringing together the metal solder particles and flux shortly prior to printing and mixing the flux and solder metal particles in the required proportions and then applying the thus mixed solder paste to a circuit board or electronic component.
摘要:
The present invention refers to a method and a device for jetting droplets of a viscous medium onto an electronic circuit board. According to the invention, said viscous medium is applied from a viscous medium supply container (140) to an eject chamber (137) through a tubular passage using a rotatable feed screw (143) arranged within said tubular passage. The viscous medium is then jetted from said eject chamber through an eject nozzle by the rapid decreasing of the volume of said chamber.
摘要:
A process (1) for printing a printed circuit board (4, 4a, 4b) by means of a mask (5) and of a doctor blade (9) has a support (3) for positioning the printed circuit board (4) and a frame (22) for holding the mask (5). The cross section of the frame (22) is smaller than the surface of the printed circuit board (4) which bears the connecting points (43) for electronic components. An adjusting device (2, X, Y) allows the printed circuit board (4, 4a, 4b) and the frame (22) to be adjusted or moved with respect to each other in a direction parallel to the surface.