NIST Special PublicationThe Institute, 2002 |
From inside the book
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Page 3
... show that one droplet detachment during peak duration can provide stable weld compared to other types of droplet detachments . This experimental study helped to achieve high - quality cost - effective welds with high production rate ...
... show that one droplet detachment during peak duration can provide stable weld compared to other types of droplet detachments . This experimental study helped to achieve high - quality cost - effective welds with high production rate ...
Page 8
... Mg filler metal used in this research work . It shows that higher currents are necessary to realize the spray type of molten droplet detachment . The pendant droplet is stationary at the end of the background period 8.
... Mg filler metal used in this research work . It shows that higher currents are necessary to realize the spray type of molten droplet detachment . The pendant droplet is stationary at the end of the background period 8.
Page 10
... shows a typical pulsed current waveform with less variation in the mean average current for the two droplets detachment during peak duration . The pulsed current waveform with less variation in the mean average current for the three ...
... shows a typical pulsed current waveform with less variation in the mean average current for the two droplets detachment during peak duration . The pulsed current waveform with less variation in the mean average current for the three ...
Page 11
... shows good regularity of average current in Region - 1 , during filler metal melting . Region - 4 consists of the highest range of standard deviation among all four regions . Region - 2 and Region - 3 are in between Region - 1 and ...
... shows good regularity of average current in Region - 1 , during filler metal melting . Region - 4 consists of the highest range of standard deviation among all four regions . Region - 2 and Region - 3 are in between Region - 1 and ...
Page 25
... shows sequential images of droplet oscillations and detachment created using the composite pulse wave form shown in Fig . 1. It can be seen that the arc is maintained and the electrode wire melts from frame 1 to frame 7. From frame 8 to ...
... shows sequential images of droplet oscillations and detachment created using the composite pulse wave form shown in Fig . 1. It can be seen that the arc is maintained and the electrode wire melts from frame 1 to frame 7. From frame 8 to ...
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Common terms and phrases
algorithm analysis angular distortion arc length arc voltage average current background duration boundary butt weldment calculated camera coefficient of variation detachment during peak developed droplet detachment dynamic effect electrode equation experimental Figure filler metal Friction Stir Welding geometry GMAW GMAW-P GTA weld GTAW hoop stress increase interface keyhole laser machine vision martensite material measured mechanical melting metal arc welding method microstructure mm/min mm/s mode molten pool monitoring NIST oscillation frequency peak duration penetration plasma arc welding plate predicted procedure pulsed current resetting residual stress robot rotational sensor shear stress shown in Fig splash strain structure surface technique Technology thermal types of droplet variation VPPAW waveform weld diameter weld fixture weld joint weld pool weld quality welding current Welding Journal welding parameters welding power supply welding process welding simulation welding speed width wire feed speed workpiece zone
Popular passages
Page ii - Certain commercial equipment, instruments, or materials are identified in this paper in order to adequately specify the experimental procedure. Such identification does not imply recommendation or endorsement by the National Institute of Standards and Technology, nor does it imply that the materials or equipment identified are necessarily the best available for the purpose.
Page 94 - Proceedings of the institution of Mechanical Engineers; Part B: Journal of Engineering Manufacture, Vol. 207, pp.9- 1 4, 1 993 [4] Soar RC and Dickens, PM, "Design of Laminated Tooling for High Pressure Die -Casting," Proceedings-SPIE The international society for Optical Engineering, pp.
Page 123 - Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy.