NIST Special PublicationThe Institute, 2002 |
From inside the book
Results 1-5 of 37
Page
... Frequency Technology · • Electromagnetic Technology ' • Optoelectronics ' Chemical Science and Technology Laboratory · • · Biotechnology Physical and Chemical Properties2 Analytical Chemistry • Process Measurements • Surface and ...
... Frequency Technology · • Electromagnetic Technology ' • Optoelectronics ' Chemical Science and Technology Laboratory · • · Biotechnology Physical and Chemical Properties2 Analytical Chemistry • Process Measurements • Surface and ...
Page 4
... Frequency , FPU = 1 / T IAV -Average current ( A ) ; IAV = ( Ip Tp + IB TB ) / ( Tp + TB ) Ir - Spray current level ( A ) ; Above IT - Spray metal transfer Below IT- Globular metal transfer ; IB - Background current ( A ) Vp - Peak ...
... Frequency , FPU = 1 / T IAV -Average current ( A ) ; IAV = ( Ip Tp + IB TB ) / ( Tp + TB ) Ir - Spray current level ( A ) ; Above IT - Spray metal transfer Below IT- Globular metal transfer ; IB - Background current ( A ) Vp - Peak ...
Page 6
... frequencies below 5 kHz to pass but reject all other frequencies , which are above 5 kHz . Since the expected molten droplet frequency is well within 5 kHz , the droplet detachment phenomena could be clearly studied from the voltage ...
... frequencies below 5 kHz to pass but reject all other frequencies , which are above 5 kHz . Since the expected molten droplet frequency is well within 5 kHz , the droplet detachment phenomena could be clearly studied from the voltage ...
Page 10
... frequency of droplet detachment decreases at a constant feeding rate of filler metal , resulting in continual increased fluctuations of the arc length . Zone ' F ' In the zone ' F ' , arc breaks because of the excessive arc length ...
... frequency of droplet detachment decreases at a constant feeding rate of filler metal , resulting in continual increased fluctuations of the arc length . Zone ' F ' In the zone ' F ' , arc breaks because of the excessive arc length ...
Page 18
... frequency ( 1 / T ) TP Peak duration GMAW - P Pulsed Current Gas Metal Arc Welding TD Time between the beginning of the pulse and the second droplet detachment Time between the beginning of the pulse and the third droplet detachment ...
... frequency ( 1 / T ) TP Peak duration GMAW - P Pulsed Current Gas Metal Arc Welding TD Time between the beginning of the pulse and the second droplet detachment Time between the beginning of the pulse and the third droplet detachment ...
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.