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1. (WO2018049585) ALUMINUM ALLOY COMPOSITE STRIP FOR INTERNAL THREADED HEAT EXCHANGE TUBE, AND MANUFACTURING METHOD THEREFOR

Pub. No.:    WO/2018/049585    International Application No.:    PCT/CN2016/099000
Publication Date: Fri Mar 23 00:59:59 CET 2018 International Filing Date: Thu Sep 15 01:59:59 CEST 2016
IPC: C22C 21/00
F28F 21/08
F28F 1/00
Applicants: YINBANG CLAD MATERIAL CO., LTD.
银邦金属复合材料股份有限公司
Inventors: ZHOU, Dejing
周德敬
XIA, Chengdong
夏承东
LV, Jinming
吕金明
LI, Long
李龙
Title: ALUMINUM ALLOY COMPOSITE STRIP FOR INTERNAL THREADED HEAT EXCHANGE TUBE, AND MANUFACTURING METHOD THEREFOR
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.