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2 167 735

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IPC

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Application

99111452/02, 1999-05-24

(24)

Start date

1999-05-24

(22)

Actual filing date

1999-05-24

(45)

Published

2001-05-27

(72)

Inventor

Mishin A.F.Volgunin A.A.Temjanko L.S.Romanchenko A.F.Vikulin V.V.Sulin A.N.Gorshkov V.I.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo

METHOD FOR MAKING LEAF SPRING SHEETS WITH CENTRAL OPENING Russian patent published in 2001 - IPC

Abstract RU 2167735 C2

FIELD: plastic metal working, possibly manufacture of variable-profile leaf spring sheets of thick sheet blanks. SUBSTANCE: method comprises steps of induction heating of blanks for rolling, rolling blanks between non-driven rolls. Blanks are heated at two stages. Central opening is made after first stage of heating realized by heating central opening zone due to heat transfer from zones of blank subjected to rolling. Intensity of heat transfer is provided due to drawing inductors together. At second heating stage temperature of zones of blank subjected to rolling is increased up to rolling temperature. Rolled blank heated by heat remained after rolling is based with use of central opening on basing rod and then end portions of blank are worked. EFFECT: reduced power consumption, simplified manufacturing cycle. 3 cl, 7 dwg, 1 tbl

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RU 2 167 735 C2

Authors

Mishin A.F.

Volgunin A.A.

Temjanko L.S.

Romanchenko A.F.

Vikulin V.V.

Sulin A.N.

Gorshkov V.I.

Dates

2001-05-27—Published

1999-05-24—Filed

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