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2 028 571

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C1

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IPC

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Application

4755557/06, 1989-11-03

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Actual filing date

1989-11-03

(45)

Published

1995-02-09

(72)

Inventor

Lipets A.U.Vivsik S.N.Bondarev A.I.Kharin V.P.Ermakov G.N.Andreeva A.Ja.Fomina V.N.Savin A.N.Kogan V.Ja.Ratnikov V.N.Terekhov V.M.

(73)

Holder

Aktsionernoe Obshchestvo Sp Mashinostroitel'Nyj Zavod"

HEAT EXCHANGE TUBE AND METHOD OF ITS MANUFACTURE Russian patent published in 1995 - IPC

Abstract RU 2028571 C1

FIELD: heat exchangers. SUBSTANCE: heat exchange tube 1 has spiral round ribs 2. Located at diametrically opposite sides of ribs 2 are bent off end face segment 3. In process of manufacture, tube is rotated and fed axially and pre-tensioned tape is fed tangentially, then tube is heated to 1450-1550 C and tube and tape are pressure-welded by applying welding force to tape square to direction of tape feeding. Welding pressure is equal to 1.0-1.3 of tape tension force. EFFECT: enhanced quality of heat exchange tube. 2 cl, 6 dwg

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RU 2 028 571 C1

Authors

Lipets A.U.

Vivsik S.N.

Bondarev A.I.

Kharin V.P.

Ermakov G.N.

Andreeva A.Ja.

Fomina V.N.

Savin A.N.

Kogan V.Ja.

Ratnikov V.N.

Terekhov V.M.

Dates

1995-02-09—Published

1989-11-03—Filed

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