Composite metallic forging.

摘要

Improved threaded tubular connectors such as tool joints, for tubular oilfield products are prepared by joining two dissimilar metallic billets to form a composite billet and by forging the composite billet to give a rough bimetallic forging, which may subsequently be heat treated and machined. One of the two metallic billets is of the alloy commonly used for the end product, the other is selected for its desirable characteristics of strength and/or corrosion resistance.