CPC B21C 25/02 (2013.01) [B21C 25/04 (2013.01)] | 14 Claims |
1. An extrusion die comprising:
a cylindrical mandrel having a unitary, single-piece construction, the mandrel having a circumferential groove formed therein;
a cylindrical die plate, the mandrel and the die plate being coupled together; and
a shrink ring disposed in the circumferential groove of the mandrel,
wherein the shrink ring is separate from the cylindrical die plate and is coupled to the mandrel by interference fit,
wherein the shrink ring has a radially innermost surface abutting the circumferential groove,
wherein the shrink ring has an additional circumferential groove formed therein, and
wherein the die plate has a circumferential tab formed therein, the circumferential tab engaging the additional circumferential groove of the shrink ring.
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