Metal fusion bonding – Process – With shaping
Patent
1977-01-21
1978-05-16
Kelly, Donald G.
Metal fusion bonding
Process
With shaping
228173F, 228 151, 228 445, B23K 3106
Patent
active
040894541
ABSTRACT:
In the process of assembling long, large diameter cylinders by welding together two or more relatively short cylinders of the same diameter, apparatus for facilitating the butt welding of the two cylinders comprises, a substantially horizontal boom which is supported by a horizontal trolley attached to a first vertical wall. Two circular cylindrical shells are rolled from sheets of the same width and to substantially the same diameter. They are supported on a plurality of pairs of rollers, which are adapted to coaxially support the two cylinders end to end. The boom includes at its outer end a hydraulic cylinder and piston, with the piston carrying a face plate, with the face concave and of the same radius of curvature as the cylinders. There is a second support wall on the side of the cylinders opposite to the boom, so that a force can be exerted by the piston against the cylinders, to reduce the horizontal diameter of one so as to match that of the other. When they are the same diameter along a selected diameter, tack welds are provided at opposite ends of the diameter. The assembly of the two component cylinders is then rotated on the rollers until a point is reached where one or the other of the two cylinders is larger in diameter. The boom is then moved along the trolley opposite the wider cylinder, which is compressed until it matches the diameter of the narrower one. When they are the same diameter the diametral points are tack welded, and so on.
REFERENCES:
patent: 2500204 (1950-03-01), Ronay
patent: 2525680 (1950-10-01), Ingemarson
patent: 2830551 (1958-04-01), Miller
patent: 3270411 (1966-09-01), Thomas
patent: 3284883 (1966-11-01), Haverfield
patent: 3422519 (1969-01-01), Fehlman
John Zink Company
Kelly Donald G.
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