B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
327/46
B23K 9/09 (2006.01) B23K 9/16 (2006.01) B23K 9/167 (2006.01) B23K 35/38 (2006.01)
Patent
CA 1151736
PULSE WELDING PROCESS ABSTRACT OF THE DISCLOSURE A gas-shielded, metal-arc, pulse welding process which comprises establishing an arc with a consumable metal electrode in a gas-shielded environment. A direct current in the range of from about 15 to 80 amps is applied to the electrode and pulsated at a frequency of from about 5000 to 25,000 pulses per second to a first maximum amplitude of from 100 to 125% of the minimum current required to produce a spray transfer of metal from the electrode. The pulsating current applied to the electrode is cyclically increased at a frequency of from about 90 to 400 cycles per second to a second maximum amplitude of from about 150 to 600% of the minimum current required to produce a spray transfer of metal from the electrode and is maintained at the second maximum amplitude for a time within the range of from 5 to 50% of each cycle. The process is particularly applicable to automatic welding processes wherein the weld must be accomplished out-of-position. In accordance with the present invention, the deposition rate is greatly enhanced in such a process without any detrimental effect on the quality of the weld.
356804
Iceland William F.
Viri Donald P.
Ridout & Maybee Llp
Rockwell International Corporation
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