Eccentric pipe sections

Details Eccentric pipe sections Eccentric pipe sections

B - Operations, Transporting

29

C

B29C 47/08 (2006.01) B21C 23/08 (2006.01) B21C 37/15 (2006.01) B29D 23/00 (2006.01) F16L 9/00 (2006.01)

Patent

CA 2354241

The invention relates to an extrusion tool for an extrusion press for manufacturing seamless, eccentric pipe sections (12) - in particular pipe sections with circular outer and inner contours - from extrusion blocks (2), in particular from extrusion billets. The extrusion tool contains a container (3) with a chamber (4) with longitudinal axis MR which accommodates the extrusion block, an extrusion stem (5) which is introduced into the container chamber, and features an dummy block (6), a mandrel arm (16) with longitudinal axis M D forming the inner wall of the pipe- section, and a die (8) with an opening (9) with longitudinal axis M M forming the outer wall of the pipe section, whereby the mandrel arm (16) is arranged such that it can be pushed out of the dummy block (6) through the extrusion block (2) up to or into the die opening (9), and the mandrel arm (16) in the position for extrusion is arranged eccentric in cross-section with respect to the container chamber (4) and the die opening (9) and the die opening (9) is arranged eccentric in cross- section with respect to the container chamber (4).

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