Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Reexamination Certificate
1999-03-16
2001-05-29
King, Roy (Department: 1742)
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
C148S595000, C148S598000, C148S654000
Reexamination Certificate
active
06238498
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates generally to intermetallic alloy wire, and more particularly to the fabrication of a homogeneous intermetallic alloy wire which can be produced in a much larger range of wire diameters with better handling and feeding characteristics.
BACKGROUND OF THE INVENTION
Intermetallic alloys such as provided by nickel aluminides, iron aluminides and titanium aluminides are increasingly utilized in engineering structures in place of other metals, such as stainless steel. Intermetallic alloys have been found to be less expensive and to possess highly desirable mechanical properties at elevated temperatures. Developments in these intermetallic alloys have resulted in significant improvements in their mechanical properties so as to even further increase their suitability for use in engineering structures.
U.S. Pat. No. 5,525,779 to Santella et al, which is commonly assigned herewith and incorporated herein by reference, points out several developments in the art of intermetallic alloys. Santella et al specifically addresses a problem in the art associated with the welding of intermetallic alloys due to difficulties encountered in processing the alloys into consumable welding rods or wires by employing known metal working techniques. However, Santella et al describes an inhomogeneous wire which is most useful as welding wire.
SUMMARY OF THE INVENTION
It is an object of this invention to produce a homogeneous wire of intermetallic alloy with useful properties which can be used for a wide range of applications
This and other objects of the invention are achieved by a method for fabricating a homogeneous wire of inter-metallic alloy comprising the steps of providing a base-metal wire bundle comprising a metal, an alloy or a combination thereof; working the wire bundle through at least one die to obtain a desired dimension and to form a precursor wire; and, controllably heating the precursor wire such that a portion of the wire will become liquid while simultaneously maintaining its desired shape, whereby substantial homogenization of the wire occurs in the liquid state and additional homogenization occurs at an elevated temperature below the melting point resulting in a homogenous alloy product.
REFERENCES:
patent: 5447754 (1995-09-01), Jasper
patent: 5525779 (1996-06-01), Santella et al.
patent: 5824166 (1998-10-01), McDonald
patent: 5846351 (1998-12-01), Masahashi et al.
patent: 5980659 (1999-11-01), Kawaura et al.
patent: 6010580 (2000-01-01), Dandliker et al.
patent: 6019736 (2000-02-01), Avellanet et al.
Blue Craig Alan
Ohriner Evan Keith
Hardaway/Mann IP Group Nexsen Pruet Jacobs & Pollard, LLC
King Roy
O'Toole J. Herbert
U T Battelle
Wilkins, III Harry D.
LandOfFree
Method of fabricating a homogeneous wire of inter-metallic... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of fabricating a homogeneous wire of inter-metallic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of fabricating a homogeneous wire of inter-metallic... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2447616