Electric heating – Metal heating – By arc
Patent
1990-02-02
1991-05-28
Shaw, Clifford C.
Electric heating
Metal heating
By arc
219 7614, B23K 904
Patent
active
050196871
ABSTRACT:
A welding system and apparatus comprising an elongated carbon rod about three inches in diameter and a foot or more in length laid on top of a damaged or cracked cast iron workpiece to be welded. The elongated carbon rod is spaced apart from the workpiece about two inches by insulating bricks, one end of the carbon rod having a plurality of insulated electrical conductor connected thereto, the other ends of the conductors being connected to five welding machines with each machine producing about 600 amps thereby providing approximately 3000 amps to the elongated carbon rod. A cast iron welding rod one inch or greater in diameter is placed against the carbon rod, with the tip of the welding rod placed above the crack or void in the workpiece to be welded. The cast iron welding rod serves as an electrode to create an arc between it and the workpiece at the crack or void to melt cast iron from the rod to fill and close the crack or void in the workpiece. The cast iron workpiece having the crack or void to be welded is pre-heated to approximately 1000.degree. F. before the welding method is begun.
REFERENCES:
patent: 3891821 (1975-06-01), Evertz
patent: 3934107 (1976-01-01), Evertz
patent: 3989918 (1976-11-01), Onarheim
patent: 4590357 (1986-05-01), Winkler
patent: 4686345 (1987-08-01), Oakes
Kettelson Ernest
Shaw Clifford C.
LandOfFree
Welding system and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Welding system and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Welding system and apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-36830