NIST Special PublicationThe Institute, 2002 |
From inside the book
Results 1-5 of 24
Page 8
... Al - 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.
... Al - 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 9
... period ( Fig.6 ) or during peak duration ( Fig.7 ) in the single droplet detachment zone ' C ' where Ip > 168A and Tp min ≤ Tp ≤ Tp ideal . The waveforms with less variations in the average current for the one droplet detachment ...
... period ( Fig.6 ) or during peak duration ( Fig.7 ) in the single droplet detachment zone ' C ' where Ip > 168A and Tp min ≤ Tp ≤ Tp ideal . The waveforms with less variations in the average current for the one droplet detachment ...
Page 21
... period of the base current , a flag signal was generated to trigger the imaging of a weld pool . The approach makes droplet detachment and image acquisition be proceeded without outside intervention . This provides the possibility for ...
... period of the base current , a flag signal was generated to trigger the imaging of a weld pool . The approach makes droplet detachment and image acquisition be proceeded without outside intervention . This provides the possibility for ...
Page 22
... period of pulse consists of a square wave form and a sine wave form with a pre - selected frequency . The peak current for a square pulse is experimentally set at around 160 A that is below the spray transition current , the function of ...
... period of pulse consists of a square wave form and a sine wave form with a pre - selected frequency . The peak current for a square pulse is experimentally set at around 160 A that is below the spray transition current , the function of ...
Page 23
... period of a square pulse because of the low electromagnetic pinch - off force resulted from the acting current . The sine wave current pulse not only promotes the continuous growth of a droplet as it oscillates but also assists in ...
... period of a square pulse because of the low electromagnetic pinch - off force resulted from the acting current . The sine wave current pulse not only promotes the continuous growth of a droplet as it oscillates but also assists in ...
Contents
3 | |
21 | |
31 | |
39 | |
47 | |
57 | |
71 | |
79 | |
147 | |
155 | |
173 | |
183 | |
203 | |
211 | |
223 | |
233 | |
87 | |
97 | |
105 | |
117 | |
125 | |
137 | |
241 | |
251 | |
265 | |
281 | |
297 | |
317 | |
Other editions - View all
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.