FIELD: technological processes.
SUBSTANCE: invention may be used to make welded header blocks, used, for instance in cooling systems of power transformer vessels. Panels are made with necks in the form of collars. Flat panels are assembled into blocks with their pressing to header pipe, and neck of each panel is welded to it. Neighboring panels are assembled with gap between edges of collars and are welded to header pipe by means of annular overlapping seam with provision of simultaneous fusion of two neighboring collars. After all annular seams are completed, edges of panel block neck collars are welded to header pipe by two longitudinal seams.
EFFECT: invention provides for increased efficiency and production of reliable welded seams without burn-throughs, and also makes it possible to reduce number of annular seams in narrow space between panels and to facilitate monitoring of welding process and visual inspection of overall appearance of welded seams.
3 dwg
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