FIELD: machine engineering.
SUBSTANCE: flange is made of rolled sheets and contains a central hole, flat surface to accomodate a sealant, mounting holes, outer bend serving as an edge and a stiffening rib. Rolled sheets are chopped for workpieces. And then a round is cut out of the workpieces. A through hole is made, the central part is drawn to get a flat surface, the outer bend as an edge is formed. Then a through hole is made again and mounting holes are pierced.
EFFECT: flange stiffness is increased.
8 cl, 7 dwg
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