Process for the manufacture of a high carbon cobalt-chromium-molybdenum alloy

摘要

A process for the manufacture of a high carbon cobalt-chromium-molybdenum alloy article which comprises: (i) subjecting a raw material charge of controlled composition to vacuum induction melting in a first furnace; (ii) casting the molten alloy from the first furnace into a first ingot; (iii) preparing the ingot into an electrode and subjecting the electrode to electroslag refining in a second furnace; (iv) casting the molten refined alloy progressively through the second furnace into a second ingot; (v) heat treating the second ingot to promote homogenisation thereof; (vi) forging the second ingot into a billet; and (vii) optionally, rolling the billet into a desired shape.