GB/T 31980-2015 in English
VALIDRecycling copper wire for electrodeposited copper foil
- Issued on:2015-09-11
- Implemented on:2016-08-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
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《GB/T 31980-2015电解铜箔用再生铜线》由TC243（全国有色金属标准化技术委员会）归口，TC243SC2（全国有色金属标准化技术委员会重金属分会）执行，主管部门为中国有色金属工业协会。
本标准规定了电解铜箔用再生铜线的要求、试验方法、检验规则、标志、包装、运输、贮存、质量证明书和订货单。本标准适用于废电线电缆经分类、加工而产生的再生金属铜线，主要用作电解铜箔的原料。
Introduction
GB/T 31980—2015 Standard Overview
GB/T 31980—2015 "Recycled Copper Wire for Electrolytic Copper Foil" is a national standard of the People's Republic of China, which aims to regulate the quality requirements of recycled metal copper wire produced by sorting and processing of waste wires and cables. This standard is mainly applicable to the production raw materials of electrolytic copper foil to ensure that its chemical composition and physical properties meet the needs of the industry.
Standard Development Background and Technology Evolution Analysis
With the development of electronic information technology, the demand for electrolytic copper foil has increased year by year. However, limited resources and environmental protection requirements have prompted industries to turn to the use of recycled materials. The formulation of this standard is based on in-depth research on the quality control of recycled copper wire, reflecting the industry's technological progress and sustainable development concept.
Comparative analysis of standard frameworks
| Dimensions | GB/T 31980—2015 | Comparison with similar international standards |
|---|---|---|
| Classification basis | Diameter range division (TX1: 0.35~1.6mm, TX2:>1.6~3.5mm) | ISO standard adopts a similar classification method and focuses on material consistency |
| Chemical composition requirements | Cu is not less than 99.90%, and the content of impurity elements is strictly controlled (As, Sb, etc. do not exceed 0.0015%) | Basically consistent with ASTM standards, but some indicators are more relaxed |
| Appearance quality standards | Uniform color, no coating, oil or foreign matter | EU standards additionally require surface smoothness testing |
Implementation recommendations and practical application cases
1. Compliance check: When purchasing recycled copper wire, the chemical composition and diameter range should be checked to see if they meet the standard requirements. For example, the diameter of TX1 copper wire should be between 0.35 and 1.6 mm, while TX2 should be greater than 1.6 to 3.5 mm.
2. Quality control: Enterprises should establish a complete inspection system, including chemical composition analysis and appearance quality inspection. It is recommended to use the GB/T 5121 method for chemical composition testing and visual inspection to ensure that there is no foreign matter mixed in.
3. Application Optimization: When recycled copper wire is used as raw material for electrolytic copper foil, attention should be paid to the impact of its impurity content on subsequent processes. It is recommended to introduce advanced impurity filtering technology in the production process to improve product quality.
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