NIST Special PublicationThe Institute, 2002 |
From inside the book
Results 1-5 of 59
Page 7
... melting , during welding operation . The 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 ...
... melting , during welding operation . The 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 ...
Page 11
... melting . Region - 4 consists of the highest range of standard deviation among all four regions . Region - 2 and Region - 3 are in between Region - 1 and Region - 4 as shown in Figs . 14 and 15 . The lowest standard deviation and the ...
... melting . Region - 4 consists of the highest range of standard deviation among all four regions . Region - 2 and Region - 3 are in between Region - 1 and Region - 4 as shown in Figs . 14 and 15 . The lowest standard deviation and the ...
Page 17
... melting uniformity . This technique facilitates research into process - integrated quality assurance and to improve the design of GMAW - P equipment to ensure that preferred welding parameters are used and to research the cause of ...
... melting uniformity . This technique facilitates research into process - integrated quality assurance and to improve the design of GMAW - P equipment to ensure that preferred welding parameters are used and to research the cause of ...
Page 18
... melted to a proper size and one droplet is detached appropriately to the base metal during peak duration . 8. Control parameters that characterize the arc stability include average current , peak energy , and droplet detachment time ...
... melted to a proper size and one droplet is detached appropriately to the base metal during peak duration . 8. Control parameters that characterize the arc stability include average current , peak energy , and droplet detachment time ...
Page 21
... melting , spatter , gas pore , and even weld cracks during a gas metal arc welding ( GMAW ) process { Ref . 1-3 ) . Hence , in - process monitoring and control for metal transfer and weld pool penetration are crucial in order to ...
... melting , spatter , gas pore , and even weld cracks during a gas metal arc welding ( GMAW ) process { Ref . 1-3 ) . Hence , in - process monitoring and control for metal transfer and weld pool penetration are crucial in order to ...
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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.