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1. (WO2018119517) DIE-CASTING PISTON, AND DIE-CASTING APPARATUS INCORPORATING SAME

Pub. No.:    WO/2018/119517    International Application No.:    PCT/CA2017/051594
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Sat Dec 23 00:59:59 CET 2017
IPC: B22D 17/30
B22D 17/14
B22D 35/04
Applicants: EXCO TECHNOLOGIES LIMITED
Inventors: ROBBINS, Paul Henry
Title: DIE-CASTING PISTON, AND DIE-CASTING APPARATUS INCORPORATING SAME
Abstract:
A piston of a die-casting apparatus comprises: a piston head fabricated of a first material; an elongate, inner carrier coupled to the piston head; a generally annular body seated on the carrier adjacent the piston head; and a wear ring disposed on the piston head, the wear ring being fabricated of a second material. The first material has a higher toughness and a lower hardness than the second material.