Process for manufacturing extrusion dies and dies thus obtained

Details Process for manufacturing extrusion dies and dies thus obtained Process for manufacturing extrusion dies and dies thus obtained

1992-07-13

1993-12-14

Evans, Geoffrey S.

Electric heating

Metal heating

Cutting or disintegrating

219 6917, B23H 912, B23H 702

Patent

active

052705137

ABSTRACT:
In this process for manufacturing extrusion dies each comprising a main body (4) and a mandrel (12M) for channeling the material or materials extruded simultaneously, mounted in this body and provided, or not, with a core (15) and, on the one hand, the main body (4) of the die is provided with a central extrusion passage (5) made, along the outer profile (17) of the product desired, by means of a cutting operation using wire (2) erosion and, on the other hand, the mandrel (12M) internal to the die body, provided, or not, with a core (15), is obtained by molding a material suitably resisting the heat of extrusion and having good toughness.

REFERENCES:
patent: 3768344 (1973-10-01), Feldcamp
patent: 4333000 (1982-06-01), Shimizu
patent: 4736656 (1988-04-01), Futamura
patent: 4756682 (1988-07-01), Blaise
patent: 5095734 (1992-03-01), Asher

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