Patent ID: 6413294
Filing Date: 2002-07-02
Classification: B22F,C22C,C22F,F42B

Abstract:
An article comprising a worked tungsten heavy alloy article having a general shape chosen from the group consisting of: a cylinder, a cone, an ogive, and any combination thereof, wherein the article is produced by a method comprising the steps of:(i) subjecting said alloy article to a first working step comprising at least one pass that reduces the initial cross-sectional area of the article; (ii) annealing said article subsequent to said at least one pass; and (iii) subjecting said article to a final working step comprising at least one pass conducted at a temperature between ambient and 300Â° C., said final working step further reducing the cross-sectional area of the workpiece such that a total reduction in said initial cross-sectional area of said article after said final working step is 40%-70%.