FIELD: metallurgy.
SUBSTANCE: invention relates to metal forming and can be used in stamping a sheet billet. Sheet blank is arranged in press tooling. At the first stage of forming, concave lines of rib, concave area and areas connected with concavity of vertical wall areas are made, which are adjacent to concave rib lines. At the second stage of forming, molding is performed by drawing of the product of ribs convex lines, convex area and areas related to convexity of vertical wall areas, which are adjacent convex rib lines by means of the product produced as a result of the first stage of forming.
EFFECT: preventing occurrence of wrinkles when making a pressed article.
6 cl, 7 dwg, 1 tbl
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