Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Reexamination Certificate
2007-12-04
2007-12-04
King, Roy (Department: 1742)
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
C148S421000
Reexamination Certificate
active
10847740
ABSTRACT:
Systems and methods for enhancing the cold-formability of Ti 6-2-4-2 sheet material are described herein. Embodiments of these methods comprise cold-forming a predetermined, pretreated Ti 6-2-4-2 alloy into a cold-formed shape; subjecting the cold-formed shape to a post-forming annealing cycle comprising: heating the cold-formed shape to about 1450±25 ° F.; holding the cold-formed shape at about 1450±25° F. for about 15±2 minutes; and cooling the cold-formed shape to room temperature. Embodiments of these methods further comprise subjecting the predetermined Ti 6-2-4-2 alloy to a pre-forming annealing cycle comprising: heating the predetermined alloy to a pre-forming annealing temperature of about 1550-1750° F.; holding the predetermined alloy at the pre-forming annealing temperature for about 30 minutes; and cooling the predetermined alloy to room temperature. These methods allow components comprising 90° bend angles, having a bend factor as low as about 6.2 T, to be achieved.
REFERENCES:
patent: 3169085 (1965-02-01), Newman
patent: 3492172 (1970-01-01), Sauvageot et al.
patent: 3901743 (1975-08-01), Sprague et al.
patent: 4543132 (1985-09-01), Berczik et al.
patent: 4738822 (1988-04-01), Bania
patent: 5849112 (1998-12-01), El-Soudani
patent: 0 263 503 (1988-04-01), None
Davis et al., The ASM Handbook, Oct. 31, 1990, vol. 2, pp. 614-615 and 619.
European Search Report dated Sep. 5, 2005.
Anderson David William
Hansen James Olaf
King Roy
Loughlin Tracy R.
Roe Jessee
LandOfFree
Ti 6-2-4-2 sheet with enhanced cold-formability does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ti 6-2-4-2 sheet with enhanced cold-formability, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ti 6-2-4-2 sheet with enhanced cold-formability will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3834145