NIST Special PublicationThe Institute, 2002 |
From inside the book
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Page 4
... position welding . It offers the possibility of welding thin metal with spray transfer or using thick wire diameter for low average welding current . Peak duration -Background duration Peak duration -Background duration A verage current ...
... position welding . It offers the possibility of welding thin metal with spray transfer or using thick wire diameter for low average welding current . Peak duration -Background duration Peak duration -Background duration A verage current ...
Page 7
... pulsed current waveform with lesser standard deviation and coefficient of variation of average current was considered to be good from the standpoint of good arc stability . Welding Procedure The flat position bead - on - plate 7.
... pulsed current waveform with lesser standard deviation and coefficient of variation of average current was considered to be good from the standpoint of good arc stability . Welding Procedure The flat position bead - on - plate 7.
Page 8
Welding Procedure The flat position bead - on - plate welds were prepared under mechanized conditions at a fixed welding speed of 10 mm / s and fixed wire speed of 100 mm's . The welding torch was positioned normal to the base metal ...
Welding Procedure The flat position bead - on - plate welds were prepared under mechanized conditions at a fixed welding speed of 10 mm / s and fixed wire speed of 100 mm's . The welding torch was positioned normal to the base metal ...
Page 23
... position on 6.0 - mm thick mild steel plates . The electrode wire is 1.2 - mm diameter steel ( AWS standard ER 70S ) and the shielding gas is argon- rich ( 85 % Ar + 15 % CO2 ) . RESULTS AND DISCUSSION According to the static force ...
... position on 6.0 - mm thick mild steel plates . The electrode wire is 1.2 - mm diameter steel ( AWS standard ER 70S ) and the shielding gas is argon- rich ( 85 % Ar + 15 % CO2 ) . RESULTS AND DISCUSSION According to the static force ...
Page 26
... positions are shown in Fig . 3. It can be seen that the metal transfer process is avoided while the image of a weld pool is captured . The side view of a weld pool shows that the weld pool possesses a convex shape that is much different ...
... positions are shown in Fig . 3. It can be seen that the metal transfer process is avoided while the image of a weld pool is captured . The side view of a weld pool shows that the weld pool possesses a convex shape that is much different ...
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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.