Discharge device for magnetic-pulse working and welding of metals

• US 4,990,732 A
• Filed: 11/16/1988
• Issued: 02/05/1991
• Est. Priority Date: 03/19/1987
• Status: Expired due to Fees

• Current Assignee: Institut Elektrosvarki Imeni EO Patona Akademii NAUK Ukrainskoi SSR
• Original Assignee: Institut Elektrosvarki Imeni EO Patona Akademii NAUK Ukrainskoi SSR
• Inventors: Dudko, Daniil A., Chudakov, Vyacheslav A.
• Primary Examiner(s): Pellinen, A. D.
• Assistant Examiner(s): Evans, Geoffrey S.
• Application Number:
  US07/274,806
• Time in Patent Office: 811 Days
• Field of Search: 219/130.4, 219/7.5, 219/8.5, 219/9.5, 219/123, 219/124.01, 219/121.45, 219/121.46, 219/121.57, 219/121.52, 219/383, 315/97, 315/148, 315/236, 315/335, 315/361, 315/111.21, 315/111.41, 72/56
• US Class Current: 219/617
• CPC Class Codes: B23K 20/06 by means of high energy impulses, e.g. magnetic energy
• CPC Class Codes: H01T 2/02 comprising a trigger electrode or an auxiliary spark gap

Abstract

A discharge device for magnetic-pulse working and welding of metals includes two working electrodes with an igniter electrode in the form of a slotted ring placed therebetween. One of the working electrodes has a current-carrying portion connected to a working portion of the working electrode and is T-shaped, while the second working electrode is separated from the first working electrode and arranged coaxially therewith, and represents a sleeve, one end of which faces the working portion of the electrode and is provided with projections on the outside and inside so as to form a developed working portion of the working electrode.

Claims

1. A discharge device for magnetic-pulse working and welding of metals, comprising:

a body with current-supply elements and a discharge chamber accomodating a first working electrode and a second working electrode and an igniter electrode, said electrodes being arranged coaxially, an insulating sleeve being placed between the working electrodes, one of said working electrodes being electrically connected to a positive terminal of a capacitor bank, while the other working electrode is connected to a negative terminal of the capacitor bank through an inducter, characterized in that the discharge chamber is secured to said body said first working electrode is connected via current supply elements to said negative terminal of said capacitor bank and comprises a current-carrying portion connected to a working portion of the first working electrode, being T-shaped, while said second working electrode is separated from the first working electrode by an insulating sleeve and arranged coaxially with the first working electrode, said second working electrode being in the shape of a sleeve, one end of which faces the working portion of the first working electrode and is provided with projections on the outside and inside so as to form a developed working portion of the second working electrode and an igniter electrode is disposed between the working portions of the working electrodes and secured to a cover of the gas-discharge chamber in an insulated condition, said igniter electrode being in the shape of a slotted ring.

2. A discharge device as claimed in claim 1, wherein the current-carrying portion of the first working electrode is a cylindrical sleeve with taper surfaces on the inside of the ends of the cylindrical sleeve, the working portions of the first working electrode being adjacent to one of said taper surfaces, the diameter of the working portion of the first working electrode adjacent to the cylindrical sleeve being smaller than the diameter of the cylindrical sleeve.

3. A discharge device as claimed in claim 1, wherein the projection of the second working electrode arranged on the inside is a toroidal lug facing the working portion of the first working electrode an insulating sleeve being disposed on the other side of said projection, the end of said insulating sleeve adjacent to the working portion of the first working electrode having at least one circular bore, while the second working electrode is secured to the body of the gas-discharge chamber.

4. A discharge device as claimed in claim 1, wherein the ring of the igniter electrode is composed of two symmetrical parts arranged in a manner allowing opposing movement of one part relative to the other part.

5. A discharge device as claimed in claim 1, wherein the current supply elements comprise flat buses separated by a suitable dielectric and rigidly-secured to the body of the discharge device.

6. A discharge device as claimed in claim 1, wherein the cover of the gas-discharge chamber has ducts adapted to feed air to an area wherein the plasma effect is maximum and to remove the air therefrom.