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2 118 581

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IPC

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Application

97101191/02, 1997-01-27

(22)

Actual filing date

1997-01-27

(45)

Published

1998-09-10

(72)

Inventor

Frolov P.V.Shport V.I.Mar'In B.N.Murav'Ev V.I.Serafimov M.A.

(73)

Holder

Komsomol'Skoe-Na-Amure Aviatsionnoe Proizvodstvennoe Ob"Edinenie

APPARATUS FOR ELECTROTHERMIC TREATMENT OF BLANK Russian patent published in 1998 - IPC

Abstract RU 2118581 C1

FIELD: plastic metal working, possibly plastic deformation of blank by heating. SUBSTANCE: apparatus includes connected with current source: thyristor contactor, transformer and clamping mechanism. Coils of transformer winding are in the form of unclosed rings provided on each core of transformer and they are connected by means of bridges with possibility of switching voltage. Surface areas of cross sections of bridges are sufficient for secondary circuit of transformer and provide low active resistance. EFFECT: enlarged manufacturing possibilities. 3 dwg, 1 tbl

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RU 2 118 581 C1

Authors

Frolov P.V.

Shport V.I.

Mar'In B.N.

Murav'Ev V.I.

Serafimov M.A.

Dates

1998-09-10—Published

1997-01-27—Filed

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