FIELD: process engineering.
SUBSTANCE: invention relates to metal forming, particularly to making parts like hollow solids of revolution with stiffness varying in cross-section. Rolled normal grade carbon steel blank is cut to produce welded cylindrical shell. Made shell ends are machined and subjected to local heat-treatment. Variable-stiffness elements are forged to ring ribs at shell ends.
EFFECT: lower labour and material input.
6 cl, 4 dwg, 2 ex
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