FIELD: metallurgy.
SUBSTANCE: inventions of the claimed group relate to metal forming and can be used for manufacture of a molded metal product having a tubular part with a gap. At the first stage, a U-shaped part having a U-shaped cross section is formed from a metal sheet. At the second stage, the U-shaped part is deformed using a matrix node with a protruding part into a tubular part with a gap. At the same time, the peripheral length LH of the cross section of the tubular part is reduced.
EFFECT: shape of the product is improved by adjusting the gap width.
12 cl, 15 dwg
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