BENDING RESISTANCE CU-AL PIPE CONNECTOR, PRODUCING METHOD THEREOF AND SPECIAL CORE BAR

Title:

BENDING RESISTANCE CU-AL PIPE CONNECTOR, PRODUCING METHOD THEREOF AND SPECIAL CORE BAR

Document Type and Number:

WIPO Patent Application WO/2009/030099

Kind Code:

A1

Abstract:

A bending resistance Cu-Al pipe welding connector includes that a straight pipe guide (9) and a tape welding surface (8) are positioned on the Cu pipe (3) welding connector. The outer diameter of the guide (9) is slightly smaller than the inner diameter of Al pipe (12), and the guide (9) length of Cu pipe (3) is longer than the high temperature plastically deforming area of Al pipe (12). Grooves (13) are positioned axially on the inner surface of the guide (9), and can prevent Al pipe (12) from forming crack. A producing method for said Cu-Al pipe connector and a core bar (2) used in this method are disclosed.

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Inventors:

ZUO TIEJUN (CN)
ZHAO YUE (CN)

Application Number:

PCT/CN2008/001389

Publication Date:

March 12, 2009

Filing Date:

July 29, 2008

Export Citation:

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Assignee:

ZUO TIEJUN (CN)
ZHAO YUE (CN)

International Classes:

F16L13/02; B23K11/02

Domestic Patent References:

WO1997001057A1

1997-01-09

Foreign References:

CN1959171A	2007-05-09
CN1299038C	2007-02-07

Attorney, Agent or Firm:

AMBOYNA INTELLECTUAL PROPERTY AGENT LTD. (Suite 3-102 Hejingyuan Building A,Jimenli,Haidian District, Beijing 8, CN)

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