FIELD: technological processes.
SUBSTANCE: invention relates to metal treatment under pressure, particularly, to stamping in one matrix of multilayer decorative case of the article from sheet bars by number of layers of the decorative case. First, bar is stamped of inner layer of the article, then by sequence other sheet bars of layers are stamped of decorative case until full formation of multilayer decorative case. Note here that sheet bar of the next layer is exposed to punching with attached to punch of all previous deformed sheet bars. After treatment by blanking of all layers of sheet bars of decorative case the edge of produced multilayer is cut.
EFFECT: labor input is lowered and quality is improved.
12 cl, 8 dwg
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