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Cold hydrostatic extrusion with and without back pressure of ferritic-pearlitic grey cast iron EN-GJL 250 and ferritic-pearlitic nodular cast iron EN-GJS 500-7 has been performed. The experiments were performed on a originally designed hydrostatic extrusion press operating up to 2000 MPa with back pressure up to 700 MPa. Cast irons were cold hydrostatically extruded with back pressure in one pass...
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