Capsule for isostatic pressing and method
AssigneeBodycote H.I.P. Limited
InventorsDavid John, Susan Davies
Life of this patent
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Abstract
A capsule 2 for HIPing comprises a rigid, self-supporting additive manufactured (AM) component 3 which is welded to inner and outer cylindrical liners 4, 6 through which cooling channel tubes 8, 10 extend. A solid end plate 11 is welded to ends of the liners 4, 6 and tubes 8, 10 extend through the end plate 11 and open to the outside. A fill tube 12 communicates with an annular void 14 defined between liners 4, 6 which is filled with powder 16. In use, the capsule 2 is subjected to Hot Isostatic Pressing (HIP). Thereafter, the inner and outer liners 4, 6 are removed to define a valve seat assembly comprising the AM component 3, tubes 8, 10, HIPed powder 16 and end plate 11.
Claims28
A capsule for hot isostatic pressing (HIPing) comprising:
- (i) an additive manufactured (AM) element, wherein said AM element includes a first volume which has density of less than 100% of its fully dense density;
- (ii) a capsule element (A), wherein said capsule element (A) is arranged to define at least part of a void for containing a powder arranged to be subjected to hot isostatic pressing (HIP), wherein capsule element (A) is secured to the AM element and is made from a different material compared to that of said AM element and capsule element (B) is secured to the AM element and is made from a different material compared to that of said AM element;
- wherein said AM element includes a second volume which has a density which is less than that of the first volume, wherein said second volume includes unconsolidated powder which is flowable within a volume (A);
- and
- wherein volume (A) comprises support elements which extend between upper and lower walls which define volume (A).
Dependencies are inferred from the claim text.