NIST Special PublicationThe Institute, 2002 |
From inside the book
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Page 5
... mode , operating with constant 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 ...
... mode , operating with constant 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 ...
Page 21
... modes of short- circuiting , globular , and spray can be observed in sequence as the welding current is increased ( Ref . 2-5 ) when steel electrode wire is used . The critical welding currents at which the metal transfer mode changes ...
... modes of short- circuiting , globular , and spray can be observed in sequence as the welding current is increased ( Ref . 2-5 ) when steel electrode wire is used . The critical welding currents at which the metal transfer mode changes ...
Page 23
... mode , the current during the pulse period of a cycle forms a droplet with a certain size , while the current during the base period of a cycle prevents the arc from extinguishing . The melting rate of the wire ( the wire feed speed ) ...
... mode , the current during the pulse period of a cycle forms a droplet with a certain size , while the current during the base period of a cycle prevents the arc from extinguishing . The melting rate of the wire ( the wire feed speed ) ...
Page 24
... mode where the droplet suspends at the tip of an electrode wire for a comparatively longer time because the electromagnetic force inside the droplet is not large enough to detach it ( Ref . 11-13 ) . This type of oscillation is not ...
... mode where the droplet suspends at the tip of an electrode wire for a comparatively longer time because the electromagnetic force inside the droplet is not large enough to detach it ( Ref . 11-13 ) . This type of oscillation is not ...
Page 27
... Mode in GMAW . Proc . 2nd International Conf . on Trends in Welding Res . , 5 : 377-381 , Gatlinburg , Tenn . 8. Madigan R. B .; Quinn T. P .; and Siewert T. A .. 1989. Sensing Droplet Detachment and Electrode Extension for Control of ...
... Mode in GMAW . Proc . 2nd International Conf . on Trends in Welding Res . , 5 : 377-381 , Gatlinburg , Tenn . 8. Madigan R. B .; Quinn T. P .; and Siewert T. A .. 1989. Sensing Droplet Detachment and Electrode Extension for Control of ...
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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.