Method and apparatus for short circuit welding

Details Method and apparatus for short circuit welding Method and apparatus for short circuit welding

2006-02-07

2006-02-07

Shaw, Clifford C. (Department: 1725)

Electric heating

Metal heating

By arc

C219S130210, C219S137710

Reexamination Certificate

active

06995338

ABSTRACT:
A method and apparatus for short circuit welding includes providing welding power suitable for short circuit welding, sensing the stick out length, and adjusting the welding speed, such as wire feed speed or travel speed, adjusting a welding parameter, or adjusting thee gas mixture in response thereto. Stick out is preferably determined by measuring a welding parameter, and performing an FFT on the parameter, and then calculating stick out, in one embodiment. Stick out can be either CTTWD or CPTPD. The system can determine when a short is about to clear by calculating a value Vcdefined by Vc=d/dt(kl*dp/dt), and comparing Vcto a Vthreshhold, which varies in response to welding cycle history.

REFERENCES:
patent: 4469933 (1984-09-01), Mizuno et al.
patent: 4485293 (1984-11-01), Tabata et al.
patent: 4533817 (1985-08-01), Makimaa
patent: 4544826 (1985-10-01), Nakanishi et al.
patent: 4717807 (1988-01-01), Parks et al.
patent: 4866247 (1989-09-01), Parks et al.
patent: 4897523 (1990-01-01), Parks et al.
patent: 4954691 (1990-09-01), Parks et al.
patent: 5003154 (1991-03-01), Parks et al.
patent: 5270516 (1993-12-01), Hamamoto et al.
patent: 5349156 (1994-09-01), Madigan et al.
patent: 6087626 (2000-07-01), Hutchison et al.
patent: 6160241 (2000-12-01), Stava et al.
patent: 6329636 (2001-12-01), Geissler
patent: 58-84678 (1983-05-01), None

Affiliated with

Also associated with

Rating

Method and apparatus for short circuit 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 Method and apparatus for short circuit welding, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for short circuit welding will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3701830