US3823589A - Inductor for magnetic pulse pressure shaping of metals - Google Patents

Abstract

An inductor for magnetic pulse pressure shaping of metals comprises a concentrator having a radial slot and an axial opening for placing a part to be shaped therein; recesses made at the concentrator outer surface with a working winding disposed therein; radial openings made in the concentrator body in the plane of said radial slot at both sides of each recess and to the recess depth; and current conducting inserts mounted in said radial openings, said inserts being insulated from the concentrator and bridging said radial slot, and each current conducting insert mounted between the recesses consisting of two current conducting sections insulated from each other to their depth by a lining.

Description

United States Patent 1191 Tikhonovich et al.

[11] 3,823,589 1451 July 16, 1974 INDUCTOR FOR MAGNETIC PULSE PRESSURE SHAPING OF METALS [76] Inventors: Alexandr Tikhonovich, ulitsa Dheprovskaya, 19, kv. 7, Mezhuev, Kharkov; Lev Timofeevich, poselick Pokatilovka, ulitsa Ulyanovskaya, 35, Khimenko, Kharkov; Alfred Lvovich, ulitsa Dzerzhinskaya, 32, kv. 15, Shlyakht, Kharkov,'all of, U.S.S.R. v g

22 Filed: June 1, 1973 211 Appl. No.: 366,213

[52] US. Cl.. 72/56, 336/178 10/1967 Weadock, Jr 72/56 4/1970 Schwinghamer et a1 72/56 [57] ABSTRACT An inductor for magnetic pulse pressure shaping of metals comprises a concentrator having a radial slot and an axial opening for placing a part to be shaped therein; recesses made at the concentrator outer surface with a working winding disposed therein; radial openings made in the concentrator body in the plane of said radial slot at both sides of each recess and to the recess depth; and current conducting inserts mounted in said radial openings, said inserts being insulated from the concentrator and bridging said radial slot, and each current conducting insert mounted between the recesses consisting of two current conducting sections insulated from each other to their depth by a lining.

2 Claims 3 Drawing Figures PATENTED JUL 1 51914 INDUCTOR FOR MAGNETIC PULSE PRESSURE SHAPING OF METALS The present invention relates to the art of shaping metals by pulsed magnetic field pressure, and more specifically to inductors for magnetic pulse pressure shaping of metals.

Known in the prior art is an inductor for magnetic pulse pressure shaping of metals comprising a concentrator having a radial slot and an axial opening for placing a part to be shaped therein, and a winding disposed in recesses made at the outer surface of the concentrator.

The disadvantage of this'prior art inductor resides in that the axial electrodynamic forces affecting the winding disposed in the recesses are not balanced at the radial slot zone. This unbalance leads to an earlyfailure of the inductor due to the breakdown of the winding electrical insulation.

It is an object of the invention to eliminate the aforementioned disadvantages.

It is another object of the invention to provide for the balance of the axial electrodynamic forces affecting the winding at the radial slot zone.

These and other objects and purposes are achieved by making radial openings in the concentrator body in the radial slot plane at both sides of each recess to the recess depth and mounting current conducting inserts insulated from the concentrator and bridging the radial slot.

Preferably, the insert mounted between the recesses is made of two current conducting sections insulated from each other to their length.

The above solution ensures practically a complete removal of the axial electrodynamic forces from the winding at the radial slot zone, thereby considerably increasing the inductor service life in terms of the number of production operation before breakdown of the winding electrical insulation.

The invention will now be explained in greater detail with reference to embodiments thereof which are represented in the accompanying drawings, wherein:

FIG. 1 shows an inductor for magnetic pulse pressure shaping of metals, and an electrical diagram illustrating its connection to a power supply source;

FIG. 2 is a sectional view taken along llll of FIG. 1 showing a concentrator with an insert mounted therein;

FIG. 3 is a top view of FIG. 1 showing a concentrator with an insert mounted therein.

The inductor (FIGS. 1 and 2) consists of a concentrator 1 having recesses 2 made in its body which are connected with an axial opening 4 by radial slot 3. A working winding 5 is laid down in recesses 2. At the lateral surfaces of concentrator 1 between the end faces and end recesses 2 and between recesses 2 themselves, radial openings 6 are made along radial slot 3 to the recess depth. Inserts 7 and an interrecess insert consisting of two current conducting sections 9 and 10 insulated by a lining 8 are mounted in these radial openings. Each end insert 7 and an interrecess insert are insulated from concentrator 1 by an insulation 11.

Working winding 5 is electrically connected to a capacitor bank 13 wia a switching means 12.

Upon closing of switching means 12, capacitor bank 13 discharges into working winding 5. As a result, high frequency current flows in the circuit of winding 5, inducing eddy currents in the walls of recesses 2. These eddy currents, via a radial slot 3, are linked at axial opening 4. The current at the axial opening, in its turn, induces eddy currents in a part 14 being shaped, and these currents, interacting with the current flow at the working opening, provide for the deformation of part 14. At the same time, the current flow in working winding 5 induces eddy currents in end inserts 7 and insert sections 9 and 10 (the directions of current flows are shown in FIG. 3). In accordance with the law of electromagnetic induction, the currents in end inserts 7 and insert sections 9 and 10 are opposite in direction to the current flowing in working winding 5. Therefore, the total magnetic flux in radial slot 3 at the zone of respective recess 2 is reduced, and as a result of this, the electrodynamic interaction of windings 5 disposed in adjacent recesses is weakened.

We claim:

1. An inductor for magnetic pulse pressure shaping of metals comprising: a concentrator having a radial slot and an axial opening for placing a part to be shaped therein; a working winding disposed in recesses made at the outer surface of said concentrator; radial openings made in the body of said concentrator in the plane of said radial slot at both sides of each of said recesses to the recess depth; current conducting inserts mounted in said radial openings, insulated from said concentrator and bridging said radial slot.

2. An inductor for magnetic pulse pressure shaping of metals as claimed in claim 1, wherein each current conducting insert mounted between said recesses consists of two current conducting sections insulated from each other to their depth by a lining.

Patent No. 598252589 Dated July 7 Inventor(s) Alexandr Tikhonovich Mezhuev et a1.

It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

On the cover sheet the correct addresses of the inventors should read as follows:

Alexandr I'ikhonovich Mezhuev: ulitsa Dne rovskaya, l9, kv. 7

Kharkov,

Lev Timofeevich Khimenko: poselok Pokatilovka,ulitsa Ulyanovskaya, 35

Kharkov, USSR I Alfred Lvovic'h Shlyakht: uli'tsa Dzerzhinskaya, 52, kv. l5

Kharkov, USSR Signed and sealed this 4th day of March 1.975.

(SEAL) Attest:

- C. MARSHALL DANN RUTH C. MASON Commissioner of Patents Attesting Officer and Trademarks F ORM PO-105O (10-69) USCOMM'DC 6037G-P69 U.S. GOVERNMENT PRIN'IING OFHCE: 869. 930

Patent No, D d 16,

Inventor) Alexandr Tikhonovich Mezhuev et a1.

It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

On the cover sheet the inventor's names should read Alexandr Tikhonovich Mezhuev Lev Timofeevich Khimenko Alfred Lvovich Shlyakht Signed and sealed this 29th day of October 1974.

(SEAL) Attest:

MCCOY M. GIBSON JR. C. MARSHALL DANN Attesting Officer Commissioner of Patents FORM PO-IOSO (IO-G9) uscoMM-Dc 60376-P69 U 5 GUVERNMENY PRINTING OFFICE: 9 9 o UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION v Patent No. 5,823,589 Dated J ly 97 Inventor(s) Alexandr Tikhonovich Mezhuev et a1.

It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

On the cover sheet the correct addresses of the inventors should read as follows:

Alexandr Tikhonovioh Mezhuevzulitsa Dnegrovskaya, l9, kv. 7

Kharkov, U SR Lev Timofeevioh Khimenko: poselok Pokatilovka,ulitsa Ulyanovskaya, 55

Kharkov, USSR Alfred Lvovich Shlyakht: ulitsa Dzerzhinskaya, 32, kv. l Kharkov, USSR 7 Signed and sealed this 4th day of March 1975.

(SEAL) Attest:

C. MARSHALL DANN RUTH C. MASON Commissioner. of Patents Arresting Officer and Trademarks FORM P0-105O (10-69) USCOMM-DC scam-pas u,s. GOVERNMENY Pmn'rmc orncc; 930 Q UNITED STATES PATENTYJOFFICE CERTIFICATE OF CORRECTION Patent No, D d 16,

Inventoflg) Alexandr Tikhonovich Mezhuev et a1.

It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

On the cover sheet the inventor's names should read Alexandr Tikhonovich Mezhuev Lev Timofeevich Khimenko Alfred Lvovich Shlyakht Signed and sealed this 29th day of October 1974.

(SEAL) Attest:

McCOY M. GIBSONVJR. C. MARSHALL DANN Attesting Officer Commissioner of Patents FORM PO-105O (10-69) UscoMM-Dc 50375.}:59

u s sovsnnmzm PRINTING OFFICE: 93o

Claims (2)

1. An inductor for magnetic pulse pressure shaping of metals comprising: a concentrator having a radial slot and an axial opening for placing a part to be shaped therein; a working winding disposed in recesses made at the outer surface of said concentrator; radial openings made in the body of said concentrator in the plane of said radial slot at both sides of each of said recesses to the recess depth; current conducting inserts mounted in said radial openings, insulated from said concentrator and bridging said radial slot.

2. An inductor for magnetic pulse pressure shaping of metals as claimed in claim 1, wherein each current conducting insert mounted between said recesses consists of two current conducting sections insulated from each other to their depth by a lining.

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