METHOD OF FABRICATION OF HOLLOW BLADE Russian patent published in 2009 - IPC B21K3/04

Abstract RU 2366530 C1

FIELD: metallurgy.

SUBSTANCE: blank of cartridge is fabricated. Further, a shank end out of cartridge bottom metal is preliminary formed. An extension of blade is fabricated out of a wall of the cartridge by preliminary forming. The end of the extension part of the blade is welded. The blade is finally punched to a required size.

EFFECT: upgraded quality and reliability of ready item without welding seams in structure of blade.

9 cl, 3 dwg, 1 ex

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Authors

Dates

2009-09-10—Published

2008-03-19—Filed