Electric heating – Metal heating – Of cylinders
Patent
1986-08-11
1988-01-05
Scott, J. R.
Electric heating
Metal heating
Of cylinders
219 85, 219 1073, 219 1077, B23K 1300
Patent
active
047178019
ABSTRACT:
A welding control circuit for induction heating of a pair of articles to a welding temperature and for pressing the heated articles together. A pair of induction coils are positioned in a gap between the portions of the articles to be heated and a pair of temperature sensors monitor the temperature of both articles and controls heating rates so both articles reach a welding temperature at approximately the same time. The temperature sensors provide signals which cause the coils to be retracted from the gap and cause the heated articles to be pressed together to form a welded pair. When similar articles are to be welded together a single coil can be used to provide induction currents which heat the articles.
REFERENCES:
patent: 2892914 (1958-07-01), Rudd
patent: 3007022 (1959-10-01), Jackson et al.
patent: 4012616 (1977-03-01), Zelahy
patent: 4327265 (1982-04-01), Edinger et al.
Brolin Charles A.
Jennerjohn Dennis A.
Pike Ronald L.
FMC Corporation
Fuller Leon K.
Guernsey Lloyd B.
Megley Richard B.
Parks Raymond E.
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