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IPC

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Application

97103606/02, 1997-03-05

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Actual filing date

1997-03-05

(45)

Published

1998-03-10

(72)

Inventor

Krasikov A.E.Konovalov A.V.Zheleznjak L.M.Khajkin B.E.Ivanov P.I.Svinin V.I.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa Zavod Po Obrabotke Tsvetnykh Metallov"

METHOD FOR PRODUCTION OF COPPER LONG BLANK Russian patent published in 1998 - IPC

Abstract RU 2106215 C1

FIELD: plastic metal working; may be used in production of cold-drawn articles from electrical copper on drawbenches provided with resistance welding machines. SUBSTANCE: after butt resistance welding of blank and trimming of flash, blank is subjected to local hot deformation, for instance, blank upsetting in axial direction within the zone of thermal effect of weld at temperature of 810-870 C to form local bulging on blank with diameter equalling 1.5-2.0 diameters of initial blank. After cooling, bulge is removed by the known methods. EFFECT: higher plastic properties of metal in zone of weld thermal effect due to reducing copper grains, and provision of use of long blank. 2 dwg

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RU 2 106 215 C1

Authors

Krasikov A.E.

Konovalov A.V.

Zheleznjak L.M.

Khajkin B.E.

Ivanov P.I.

Svinin V.I.

Dates

1998-03-10—Published

1997-03-05—Filed

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