Electric heating – Metal heating – By arc
Patent
1975-03-17
1978-07-25
Truhe, J. V.
Electric heating
Metal heating
By arc
219160, 228 50, B23K 902
Patent
active
041031423
ABSTRACT:
Apparatus is provided for use in welding together work pieces along a weld line including backing locating means which applies progressively a backing strip over the weld line in advance of the formation of a reverse bead along such weld line and which maintains the flexible backing strip in position over the weld line as the reverse bead is formed along the weld line, first means from which the flexible backing strip is passed to the backing locating means, second means which lifts the flexible backing strip progressively off the weld line as formation of the reverse bead along the weld line is completed and support means which holds the backing locating means, the first and the second means relative to a welding head. Provision is made for the backing locating means to comprise a roller, for a sensing means in the form of a thermocouple for controlling the formation of the reverse bead and for a tracking means for positioning the backing locating means relative to the weld line. The invention also includes in its scope the method of one-sided welding including use of the aforementioned apparatus.
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Dr. K. Teraland, Dr. M. Arikawa, "Recent Developments in One-Side Automatic Welding," 1969, p. 16.
Shaw Clifford C.
Truhe J. V.
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