Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method of evaluating performance of electrician's regenerated copper rod

A technology of recycled copper and electrolytic copper rods, applied in the direction of electrical excitation analysis, material excitation analysis, etc., can solve the problems of insufficient evaluation of material properties, and achieve the effect of a convenient evaluation method

Active Publication Date: 2017-09-19
SHANGHAI ELECTRIC CABLE RES INST
View PDF1 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional detection methods have limitations in the evaluation of renewable copper rods for electrical purposes, and cannot fully evaluate the material properties. At present, there is an urgent need for a reliable and simple evaluation method for renewable copper rods for electrical purposes.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method of evaluating performance of electrician's regenerated copper rod
  • Method of evaluating performance of electrician's regenerated copper rod
  • Method of evaluating performance of electrician's regenerated copper rod

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The evaluation method of the performance of the recycled copper rod for electricians in this embodiment,

[0028] 1) Determine the mass percentage of each element in the copper rod to be tested;

[0029] 2) Prepare the copper rod to be tested into a metallographic sample, and determine the average grain intercept of the metallographic sample;

[0030] 3) Determine the surface Vickers hardness of the copper rod to be tested;

[0031] 4) When the mass percentage of each element in the copper rod to be tested meets the preset standard of the element mass percentage of electrolytic copper rod, and the average value of the grain intercept of the metallographic sample prepared from the copper rod to be tested The metallographic sample prepared by the electrolytic copper rod is within the range of the average value of the grain intercept of the metallographic sample, and the surface Vickers hardness of the copper rod to be tested is within the preset surface Vickers hardness of the el...

Embodiment 2

[0047] Regarding the determination of the mass percentages of various elements in recycled copper rods and electrolytic copper rods for electrical purposes, this implementation will explain:

[0048] 1) Determine the mass percentage of oxygen in recycled copper rods and electrolytic copper rods for electrical engineering

[0049] Three types of soft electrical recycled copper rods with a diameter of 8.0mm that are common in the domestic market are selected as test samples, numbered 1#, 2#, 3#. Another piece of soft T1 electrolytic copper rod with a diameter of 8.0mm was taken as a reference sample, numbered 4#.

[0050] In an environment with a temperature of 23°C and a humidity of 50%, weigh 0.30g~1.00g for each sample, accurate to 0.001g, and put it into the sampler of the nitrogen oxygen analyzer; measure it according to the operating procedures of the instrument, independent Take the average of the two measurements. In an environment with a temperature of 23°C and a humidity of...

Embodiment 3

[0065] Regarding the determination of the average value of the grain intercepts of the metallographic samples corresponding to the recycled copper rods and electrolytic copper rods for electrical purposes, this implementation will explain:

[0066] Metallographic samples were prepared, and the average grain intercepts of samples 1#, 2#, 3#, and 4# in Example 2 were measured according to the national standard GB / T6394-2002 "Metal Average Grain Size Measurement Method". Among them, 1#, 2#, 3#, 4# samples were taken to prepare metallographic samples. Using hot-press inlay method, the samples were made into inlay samples respectively, and they were ground with No. 2000 sandpaper, and polished with woolen polishing cloth and 0.5μm diamond polishing agent to the surface without scratches. After cleaning, use ferric chloride to corrode for 5s and then rinse. Use ZEISSAxio Scope A1 metallographic microscope to take metallographic pictures.

[0067] The intercept point method in the nation...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
Vickers hardnessaaaaaaaaaa
quality scoreaaaaaaaaaa
Login to View More

Abstract

The invention provides a method of evaluating performance of an electrician's regenerated copper rod; the method comprises: measuring mass percent of each element in the cooper rod under measurement; making the cooper rod under measurement into a gold phase specimen, and measuring average grain intercept of the gold phase specimen; measuring surface Vickers hardness of the copper rod under measurement; when the mass percent of each element in the copper rod under measurement meets a preset standard for mass percent of elements in electrolytic copper rods and the average grain intercept of the gold phase specimen made with the copper rod under measurement is within a preset range of a gold phase specimen made with an electrolytic copper rod, determining the copper rod under measurement is an electrolytic copper rod; otherwise, determining the copper rod under measurement is an electrician's regenerated copper rod. By analyzing microscopic tissue composition and material performance of the copper rod under measurement, the reliable and convenient method for evaluating whether a copper rod under measurement is an electrician's regenerated copper rod is provided.

Description

Technical field [0001] The invention relates to the technical field of performance evaluation of copper rods, in particular to a method for evaluating the performance of recycled copper rods for electricians. Background technique [0002] my country's copper resources are in short supply, and the amount of copper scrap used has been increasing year by year. In recent years, the amount of scrap copper imported from abroad has reached more than 4 million tons. Statistics show that as of the end of 2012, the use of copper conductors in the cable industry has reached 5.4 million tons, of which about 2.7 million tons of recycled copper conductors have accounted for half of the consumption. The use of waste copper to recycle and produce copper can save 70% to 80% of energy compared with the production of primary copper, and has significant energy saving and cost advantages. The recycling and utilization of scrap copper not only expands the application scope of copper metal resources, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/67
CPCG01N21/67
Inventor 姚大伟张远望袁德华
Owner SHANGHAI ELECTRIC CABLE RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com