CU-CR-ZR ALLOY CONTACT LINE FOR ELECTRIFIED RAILWAYS AND MANUFACTURING METHOD THEREFOR

WIPO Patent Application WO/2021/208307

A1

A Cu-Cr-Zr alloy, a manufacturing method therefor, a Cu-Cr-Zr alloy contact line for electrified railways and a manufacturing method therefor. The chemical composition and weight percentage of the Cu-Cr-Zr alloy are as follows: Cr: 0.2%-1.0%, Zr: 0.02-0.2%, and the balance being Cu. The manufacturing method for the Cu-Cr-Zr alloy material contact wire for high-speed railways comprises the following steps: (1) in an inert atmosphere, subjecting an alloy solution to an upper casting process to obtain a copper rod blank; and (2) subjecting the copper rod blank in step (1) to hot rolling treatment, solid solution treatment, cold rolling treatment and aging treatment. Said method realizes large-length and large-unit-weight industrial production of a Cu-Cr-Zr contact wire for high-speed railways, has the advantages of excellent performance, stable quality, continuous operation and high material utilization rate, and can realize large-scale production.

WANG CONGLI (CN)
YU GAOFENG (CN)
ZHANG HANG (CN)
JING LIN (CN)
WU BIN (CN)
WU XUHONG (CN)
WANG WENBIN (CN)
ZHANG QI (CN)
MA MINGYUE (CN)
LI XIAOYANG (CN)

PCT/CN2020/109325

October 21, 2021

August 14, 2020

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SHAANXI SIRUI ADVANCED MAT CO LTD (CN)

C22C9/00; B22D11/14; C22C1/02; C22F1/08

CN107586975A	2018-01-16
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CN107739872A	2018-02-27
CN1477651A	2004-02-25
CN106591753A	2017-04-26
CN104148598A	2014-11-19
CN105543514A	2016-05-04
CN101531149A	2009-09-16
JP2005096678A	2005-04-14

SHANGHAI BESHINING LAW OFFICE (CN)

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