Refractory metal pots

Details Refractory metal pots Refractory metal pots

2005-03-23

2011-11-22

Tolan, Edward (Department: 3725)

Metal deforming

By use of closed-die and coacting work-forcer

Forcing work into or within closed die; e.g., forging

C072S364000, C072S377000, C072S700000

Reexamination Certificate

active

08061177

ABSTRACT:
Computer-implemented processes for making refractory metal pots, including: cutting an a refractory metal ingot into a first workpiece; subjecting the first workpiece to multiple upset forgings, annealings in a vacuum or inert gas to a temperature sufficiently high to cause at least partial recrystallization, forging-backs, and rollings to form a plate; wherein the forged, annealed workpiece undergoes a reduction in thickness after at least one rolling pass and is turned between at least one pass, to form the plate; and deep drawing the plate to form a pot; wherein dimensions of at least one workpiece or plate suitable for processing into a pot are pre-determined with a computer-implemented finite element modeling assessment method.

REFERENCES:
patent: 4939829 (1990-07-01), Maki et al.
patent: 5374323 (1994-12-01), Kuhlman et al.
patent: 6071360 (2000-06-01), Gillespie
patent: 6142001 (2000-11-01), Collier
patent: 6193821 (2001-02-01), Zhang
patent: 6210502 (2001-04-01), Takahashi
patent: 6250128 (2001-06-01), Ando et al.
patent: 6283357 (2001-09-01), Kulkarni et al.
patent: 6302977 (2001-10-01), Liu
patent: 6331233 (2001-12-01), Turner
patent: 6348139 (2002-02-01), Shah et al.
patent: 6419806 (2002-07-01), Holcomb et al.
patent: 6569270 (2003-05-01), Segal
patent: 6887356 (2005-05-01), Ford et al.
patent: 7014722 (2006-03-01), Arimoto et al.
patent: 2002/0112789 (2002-08-01), Jepson et al.
patent: 6-158297 (1994-06-01), None
patent: 8-232061 (1996-09-01), None
Thiebaut, C. (C.E.A. Centre De Valduc Service MM) et al: “Sheet forming of tantalum: comparison between experimental results and modelling.” Plansee Ag. Reutte, Tyrol, Austria. May 1997. 971-983, Numerical Data, Photomicrographs, Graphs 12 Ref. Conference: 14thInternational Plansee Seminar '97. vol. 1: Metallic High Temperature Materials, Tirol, Austria, May 12-16, 1997, 1997, XP009050687.

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