Method for forming a workpiece by a magnetic field generated by

Details Method for forming a workpiece by a magnetic field generated by Method for forming a workpiece by a magnetic field generated by

1996-11-15

1998-09-29

Jones, David

Metal deforming

By application of fluent medium, or energy field

By kinetic energy of fluid or field

72 62, B21D 2614

Patent

active

058132643

ABSTRACT:
A method for forming and joining workpieces by a magnetic field produced by a current impulse applied through a high current loop, whereby the magnetic field exerts a force from outside on an electrically conducting workpiece or on electrically conducting compression rings encircling the workpiece, wherein the current impulse begins in the form of a half sine wave defined by the equation (.omega.t=0 . . . .pi.); and then fades away as defined by the equation (.omega.t>.pi. . . . .infin.).

REFERENCES:
patent: 3321946 (1967-05-01), Ferguson
patent: 3345732 (1967-10-01), Brower
patent: 4063208 (1977-12-01), Bernett
patent: 4135379 (1979-01-01), Hansen et al.
patent: 4285224 (1981-08-01), Shkatov
patent: 4619127 (1986-10-01), Sano et al.
patent: 5442846 (1995-08-01), Snaper
patent: 5457977 (1995-10-01), Wilson

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