Title:
PREPARATION METHOD FOR BRIGHT HIGH-ACCURACY OXYGEN-FREE COPPER BAR
Document Type and Number:
WIPO Patent Application WO/2017/140099
Kind Code:
A1
Abstract:
Provided is a preparation method for a bright high-accuracy oxygen-free copper bar, comprising: smelting of electrolytic copper, up-drawing continuous casting of a high-purity oxygen-free copper rod, continuous extrusion of a copper bar blank, drawing, inspection and test, and package. A high-purity oxygen-free bright copper bar prepared using the method has a simple process and a short process flow, low cost and energy consumption, and a short delivery time. Continuous production without interruption can be achieved, and a copper bar blank of thousands of meters or longer in length is obtained. A copper bar material prepared has a high accuracy, a low oxygen content, good mechanical properties and a high conductivity; and the size accuracy error is ≤±0.15, Cu+Ag≥99.99wt％, the O content is ≤10 PPM, the Brinell hardness is ≥75HB, and the conductivity is ≥98％IACS.
More Like This:
| JP3026584 | [Name of device] Wire drawing bobbin |
| JPH11167826 | CABLE COATED WITH SOLID LUBRICANT |
| JP2012507117 | Magnetic nanostructures to replace TCO |
Inventors:
WANG PENGJU (CN)
CHEN AIHUA (CN)
ZHANG DA (CN)
ZHANG LIXU (CN)
ZHANG XIAOTING (CN)
LI YE (CN)
CHEN AIHUA (CN)
ZHANG DA (CN)
ZHANG LIXU (CN)
ZHANG XIAOTING (CN)
LI YE (CN)
Application Number:
PCT/CN2016/097082
Publication Date:
August 24, 2017
Filing Date:
August 29, 2016
Export Citation:
Assignee:
ZHONGTIAN ALLOY TECH CO LTD (CN)
International Classes:
H01B13/00
Foreign References:
| CN105551688A | 2016-05-04 | |||
| CN104599787A | 2015-05-06 | |||
| CN102034563A | 2011-04-27 | |||
| CN104625591A | 2015-05-20 | |||
| JP2014094386A | 2014-05-22 |
Download PDF: