Pulse width modulated pulsed DC arc welding

Electric heating – Metal heating – By arc

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

21913021, 21913051, B23K 909

Patent

active

044031351

ABSTRACT:
A method of arc welding is disclosed. Specifically, a method of pulsed DC arc welding is disclosed wherein the pulse width of the current pulses are modulated to maintain a constant time averaged power flow to the work pieces being welded. This method of arc welding is especially useful with a type of pulsed DC arc welding wherein the ratio of peak current to maintenance current is maintained at a selected high value and the current is cycled in a time duration whereby oxides on the surface of the work pieces are dissipated as the weld is made. When used with this type of pulsed DC arc welding the present method is especially suited for fluxless welding of aluminum work pieces, such as thin wall aluminum tubing used in making heat exchangers for air conditioning systems.

REFERENCES:
patent: 3510676 (1970-05-01), Pierce, Jr.
patent: 3522412 (1970-08-01), Bell et al.
patent: 3538301 (1970-11-01), Bray et al.
patent: 3598954 (1971-08-01), Iceland et al.
patent: 3614378 (1971-10-01), Goodell et al.
patent: 3818177 (1974-06-01), Needham et al.
patent: 3826890 (1974-07-01), Bartlett
patent: 3838244 (1974-09-01), Petrides et al.
patent: 3894210 (1975-07-01), Smith et al.
patent: 3932728 (1976-01-01), Maxwell
patent: 3989922 (1976-11-01), Fahey
patent: 3995138 (1976-11-01), Kalev et al.
patent: 4016484 (1977-04-01), Crouthamel
patent: 4092517 (1978-05-01), Woodacre
patent: 4123646 (1978-10-01), Keinanen
patent: 4301355 (1981-11-01), Kimbrough et al.
P. T. Houldcraft, Welding Process Technology, 1977, pp. 96-99.
A Look at the Brazing of Aluminum-Particularly Fluxless Brazing by O. R. Singleton in Welding Journal of Nov. 1970, pp. 843 through 849.
Safe and Sure Aluminum Brazing by H. K. Kerr and L. E. Pennington in Machine Design of Nov. 14, 1974, pp. 171 through 175.
The Future of Copper and Aluminum in Fluxless Vacuum Brazing of Aluminum by Harry K. Herr in Metal Progress of Dec. 1969, pp. 68 through 73.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Pulse width modulated pulsed DC arc welding does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pulse width modulated pulsed DC arc welding, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pulse width modulated pulsed DC arc welding will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1593548

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.