Title:
ALUMINUM ALLOY COMPOSITE STRIP FOR INTERNAL THREADED HEAT EXCHANGE TUBE, AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2018/049585
Kind Code:
A1
Abstract:
An aluminum alloy composite strip for producing an internal threaded heat exchange tube, and a method for manufacturing the aluminum alloy composite strip. The method comprises the following steps: melting ingots; performing surface treatment; performing composite hot-rolling to obtain a hot-rolled composite strip comprising an external aluminum alloy layer and an internal aluminum alloy layer; performing cold rolling on the composite strip; annealing to obtain a completely softened composite aluminum strip; thread rolling, i.e., rolling threads on the surface of the internal aluminum alloy layer of the softened composite aluminum strip to obtain a threaded composite strip; and slitting the threaded composite strip to obtain a composite strip for manufacturing the heat exchange tube.
Inventors:
ZHOU DEJING (CN)
XIA CHENGDONG (CN)
LV JINMING (CN)
LI LONG (CN)
XIA CHENGDONG (CN)
LV JINMING (CN)
LI LONG (CN)
Application Number:
PCT/CN2016/099000
Publication Date:
March 22, 2018
Filing Date:
September 14, 2016
Export Citation:
Assignee:
YINBANG CLAD MAT CO LTD (CN)
International Classes:
C22C21/00; F28F1/00; F28F21/08
Foreign References:
| CN103343269A | 2013-10-09 | |||
| CN102747255A | 2012-10-24 | |||
| JP2000129458A | 2000-05-09 | |||
| JPH11172359A | 1999-06-29 | |||
| JPH11351791A | 1999-12-24 |
Attorney, Agent or Firm:
BEIJING LAWSING IP FIRM (CN)
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