Electrolytic Copper Wire Cleaning for Defect-Free Profile Extrusion
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Solution Overview
Problem
The continuous production of copper profiles often results in imperfections such as blisters, grooves, and edge cracks due to the quality of the starting material, leading to lower market value or the need for re-melting, and existing methods like multi-stage electrolysis are complex and quality-dependent.
Innovation Solution
Electrolytic cleaning of the copper starting material before extrusion, which removes impurities and improves the surface structure, reducing defects by homogenizing the surface and ensuring high-quality copper profiles without interrupting the continuous manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional extrusion process is used without electrolytic cleaning, then production continuity is maintained, but defects such as bubbles, grooves, and edge cracks occur in the copper profile
Solution Approach 1:
The copper starting material is electrolytically cleaned before extrusion to remove impurities and homogenize the surface structure. This preliminary action prevents defects during the subsequent extrusion process, eliminating bubbles, grooves, and edge cracks without interrupting production continuity.
Solution Approach 2:
The patent replaces conventional mechanical cleaning methods with electrolytic cleaning. By applying electrical current through an electrolyte solution, the process chemically removes impurities and homogenizes the copper surface, achieving superior cleaning effectiveness without mechanical contact.
2Manufacturing precision
If multi-stage electrolytic process is used as described in US Patent 5,516,408 A, then copper wire quality is improved, but production complexity and time increase significantly
Solution Approach 1:
Instead of using the complex multi-stage electrolytic process described in US Patent 5,516,408 A, the patent applies a simplified single-stage electrolytic cleaning process. This partial action approach achieves sufficient surface homogenization and impurity removal for extrusion quality without the excessive complexity and time requirements of multiple electrolytic stages.
Solution Approach 2:
The patent separates the electrolytic cleaning function from the extrusion process, performing cleaning as a distinct preliminary step. This segmentation allows the cleaning process to be optimized independently, using simple electrolytic treatment rather than complex multi-stage electrolysis, while still achieving the required surface quality.
3Productivity
If defective copper profiles are produced, then production continuity is maintained, but material waste and energy consumption increase due to re-melting
Solution Approach 1:
Electrolytic cleaning is performed as a preliminary step before extrusion to homogenize the copper starting material surface and remove impurities. This prevents the formation of defects such as bubbles, grooves, and edge cracks during extrusion, eliminating the need for re-melting and reprocessing, thereby reducing material waste while maintaining continuous production.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method significantly reduces material and energy requirements, increases product quality and quantity, and minimizes rejects, producing high-quality copper profiles with fewer defects, allowing for continuous production without interruptions.
Implementation Method 1
the copper starting material is drawn through an electrolyte bath in which at least one electrode is polarized by means of a voltage supply, in particular drawn through the electrolyte bath in a currentless state
Implementation Method 2
electrolytic cleaning of the copper starting material not only removes contaminants such as oil and other adhering substances, but also improves the surface structure of the copper starting material by homogenizing the surface of the copper starting material through the removal and/or deposition of copper
Data Source
Figure 1
AI summary
Method for producing a copper profile from a copper starting material, in particular a copper wire, with the following steps - electrolytic cleaning of the copper starting material, the copper starting material being introduced into a copper-containing electrolyte in an electrolytic bath with at least one electrode, the electrode being polarized by means of a voltage supply and the copper starting material being polarizing the electrolyte so that the copper feedstock is free from a direct voltage supply, and - extruding the electrolytically cleaned copper feedstock through a forming die so that the copper profile is present. Furthermore, the invention relates to a copper profile and a device for producing a copper profile.