NIST Special PublicationThe Institute, 2002 |
From inside the book
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Page 3
... voltage , welding current as well as the reproduction of welding data and complete documentation of all parameters and welding machine adjustments . Therefore , this method was used to select the suitable pulse parameter to welding ...
... voltage , welding current as well as the reproduction of welding data and complete documentation of all parameters and welding machine adjustments . Therefore , this method was used to select the suitable pulse parameter to welding ...
Page 4
... Voltage , V Background voltage b ) Pulsed voltage Time , ms Ip - Peak current ( A ) ; T - Pulse cycle time ( ms ) , T = Tp + TĖ ; Pulse Frequency , FPU = 1 / T IAV -Average current ( A ) ; IAV = ( Ip Tp + IB TB ) / ( Tp + TB ) Ir ...
... Voltage , V Background voltage b ) Pulsed voltage Time , ms Ip - Peak current ( A ) ; T - Pulse cycle time ( ms ) , T = Tp + TĖ ; Pulse Frequency , FPU = 1 / T IAV -Average current ( A ) ; IAV = ( Ip Tp + IB TB ) / ( Tp + TB ) Ir ...
Page 5
... voltage output characteristics . In the pulsed current mode , peak voltage , background voltage , peak duration , and cycle time can be vary over the ranges 10 to 40V , 10 to 30V , 1 to 15ms and 3.3 to 50 ms , respectively . Direct ...
... voltage output characteristics . In the pulsed current mode , peak voltage , background voltage , peak duration , and cycle time can be vary over the ranges 10 to 40V , 10 to 30V , 1 to 15ms and 3.3 to 50 ms , respectively . Direct ...
Page 6
... voltage signal 7. Torch 8. Filler metal 9. Electric arc 10. Base metal 11. Carriage 12. Filler metal feed rollers 13. Filler metal reel 14.Transistorized welding power ... voltage spikes on the peak voltage levels along the peak duration . 6.
... voltage signal 7. Torch 8. Filler metal 9. Electric arc 10. Base metal 11. Carriage 12. Filler metal feed rollers 13. Filler metal reel 14.Transistorized welding power ... voltage spikes on the peak voltage levels along the peak duration . 6.
Page 7
... voltage traces . Stored waveforms of pulsed current and voltage were transferred from the oscilloscope to a personal computer and saved for later analysis . The personal computer was equipped with the General purpose Instrumentation Bus ...
... voltage traces . Stored waveforms of pulsed current and voltage were transferred from the oscilloscope to a personal computer and saved for later analysis . The personal computer was equipped with the General purpose Instrumentation Bus ...
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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.