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The novel drop-on-demand (DOD) solder droplet jetting system, which can be characterized as the non-heat affection of the piezoelectric actuator, the control mechanism of the piston head-to-nozzle distance, and disposable nozzle parts, is devised. This system consists of the piezoelectric actuator, insulator, piston head-to-nozzle distance control apparatus, pressure control unit, and furnace. For...
In this paper, we present high aspect ratio 3D metal micro column and 65deg-inclined micro column made by molten metal DoD inkjet system. A design, fabrication and performance test of the DoD metal-jet system are introduced for application to the molten metal such as lead free solder. In the experimental test, we set up the test apparatus for visualization of the droplet ejection and measure the ejected...
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