FIELD: technological processes.
SUBSTANCE: stamping of tubular rectangular or square in cross section billets by means of filling billets cavities with filler and their sealing with axial puncheons, creation of high hydrostatic pressure of filler in billets cavities and displacement of medium parts of billets or their end parts in direction that is perpendicular to their initial axes. Several billets are stamped simultaneously, which are installed parallel to each other prior to stamping with contact of lateral surface of the following billet with lateral surface of previous billet, and contact of end billets with walls of semi-matrix.
EFFECT: power inputs are reduces and labour productivity is increased.
7 dwg
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