FIELD: plastic metal working. SUBSTANCE: method comprises steps of upsetting initial blank, forming hollow semifinished product having flanged thickened portion and boss with bridge at displacing metal by pressing it out from central part to boss; finally forging by direct extrusion at simultaneously shaping flange. Flanged thickened portion is formed by displacing upset metal towards free surface of flanged thickened portion until its dimensions in plan view no more than those of flange in plan view of ready forging. Cavity of semifinished product has depth in range consisting 0.8-1.2 of cavity depth of ready forging. EFFECT: improved process of making hollow flanged forgings, enlarged manufacturing possibilities of method. 8 cl, 2 dwg
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Authors
Dates
2001-06-27—Published
2000-02-04—Filed