Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Reexamination Certificate
1999-11-08
2001-09-04
Sheehan, John (Department: 1742)
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
C148S112000, C148S559000, C148S579000, C148S595000
Reexamination Certificate
active
06284068
ABSTRACT:
CROSS REFERENCE TO RELATED APPLICATIONS
Electric charge pumps have been in use for several generations and a prime example is the battery charger. The difference between the well known battery charger and the herein defined electric charge pump is that the battery charger transfers electric charges from one plate to another within the battery and the electric charge pump transfers charges from an object to the ground or from the ground to an object. The difference in these two systems produces profoundly different results. Metal processing to change or modify the internal structure of a metal is also not new. Examples are carbonizing, annealing, cold working, hot working, alloying, precipition hardening and very rapid cooling from liquid to a solid to obtain an amorphous material. Metal processing while under a high electrical potential can now be added to the list.
Reference is made herein to Rao, et al. U.S. Pat. No. 5,914,088 of June 22, 1999. This apparatus is for continuously annealing amorphous alloy cores with closed magnetic field path. This system utilizes electricity to maintain a magnetic field that in turn causes the cores to retain their amorphous characteristics, it does not utilize a high electric potential to produce a nano crystalline or amorphous structure within said cores.
FEDERAL SPONSORED R & D
No Federal R & D funds were received.
REFERENCE TO MICROFICHE APPENDIX
Microfiche appendix is not required.
BACKGROUND OF THE INVENTION
This invention relates to the removal of or the addition of electric charges while a metal or metal part is at a temperature above the crystallization point and maintaining the surfeit or the deficiency until said metal or metal part has a temperature well below the crystallization point. This is the process that changes the molecular structure of said metal or metal part.
SUMMARY OF THE INVENTION
It is the object of my invention to provide a method to reduce electromagnetic core energy losses by modifying the molecular structure in said core materials.
It is another object of my invention to modify the crystalline structure so as to change the material characteristics such as the ultimate tensile strength, the yield point, the elongation and the fatigue factors.
The aforementioned and other objects of this invention are achieved by the utilization of direct current electric energy applied to an insulated metal or metal part to add or remove electric charges from said part usually with the application of heat energy. When direct electric potential is applied to metal or metal parts insulated from the ground or the opposite charged conductor, negative electric charges are either added or extracted from said metal or parts dependent upon how the connections are made. This connection causes a shortage or excess of electric charges in and on the material or part and when the part is heated to just under the melting point or the material is heated to the molten stage and then cooled to below the recrystallization temperature, while the electric potential is maintained, the internal structure of said material or part is changed. This changed structure, when applied to silicon electric steel cores, used in alternating current devices will reduce the core energy losses significantly. The extent of this change to the metal molecular structure can be controlled by varying the electrical potential/temperature ratios. The crystalline structure change in metallic parts alters many of the physicals of the metal. This stated process has applications in electrical inductance, structural applications and fatigue life of many different parts.
REFERENCES:
patent: 3847775 (1974-11-01), Prestridge
patent: 4606801 (1986-08-01), Prestridge et al.
patent: 4931613 (1990-06-01), Salsgiver et al.
patent: 5914088 (1999-06-01), Rao et al.
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