. The Bell System technical journal . FOLLOW Fig. 1 (c) — High-speed photogiai)lis of welding operation. 888 THE BELL SYSTEM TECHNICAL JOURNAL, JULY 1954 supply excessive energy because of the large amounts of material thatare then burned off, and objectionable weld flash is produced. Probablythe major problem is to control the energy supplied by the circuit or,indirectly, the control of arc duration. DURATION OF ARC In this section the variables affecting arc duration ^xi\\ be the arcing period the gun moves essentially at constant arc time may then be said to be eq
. The Bell System technical journal . FOLLOW Fig. 1 (c) — High-speed photogiai)lis of welding operation. 888 THE BELL SYSTEM TECHNICAL JOURNAL, JULY 1954 supply excessive energy because of the large amounts of material thatare then burned off, and objectionable weld flash is produced. Probablythe major problem is to control the energy supplied by the circuit or,indirectly, the control of arc duration. DURATION OF ARC In this section the variables affecting arc duration ^xi\\ be the arcing period the gun moves essentially at constant arc time may then be said to be equal to the distance traveled afterarc initiation divided by the gun velocity. A. Initial Separation The voltage at which the arc is initiated is primarily a function of theseparation between the two electrodes. A series of static voltage break-down tests was made in order to define the distribution of initiationseparation under conditions to be expected in production welding of ablock to a wire. The block material w^as 70-30 per ce
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
