Method to part welded vessel sections without violating internal

Details Method to part welded vessel sections without violating internal Method to part welded vessel sections without violating internal

1995-08-24

1997-08-12

Cuda, Irene

Metal working

Method of mechanical manufacture

Heat exchanger or boiler making

29890051, 2940219, B23P 1526

Patent

active

056552971

ABSTRACT:
A method and apparatus of separating a vessel which is partly welded to a tubesheet of a tube bundle, includes removing the weld seam and reducing the wall thickness of the vessel until only approximately 1/8" of wall thickness remains and thereafter parting the vessel from the tubesheet by extruding the remaining wall thickness using a wheel cutter. The wheel cutter itself comprises a uniform thickness disk having a frusto-conical, cylindrical and subsequent conical portion on its outer periphery, the conical portion tapering to a greater extent that the frusto-conical portion.

REFERENCES:
patent: 4406856 (1983-09-01), Wilkins et al.
patent: 4633555 (1987-01-01), Legge
patent: 4830551 (1989-05-01), Brennan et al.
patent: 4872249 (1989-10-01), Vanderpol et al.
patent: 4979294 (1990-12-01), Bowman et al.

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