The drawing process on copper
The copper drawing process has specific features related to the unique properties of this material.
The key points are as follows:
1. High ductility and malleability
Copper is extremely ductile and malleable, making it ideal for the drawing process. Its ability to deform without breaking allows complex shapes to be obtained with extreme precision, even with low thicknesses.
2. Low deformation resistance
Compared with other materials, copper requires lower forces during drawing, which reduces equipment wear and improves process efficiency.
3. High conductivity
Copper drawing does not significantly compromise its excellent electrical conductivity and thermal conductivity properties. For these reasons, copper is mainly chosen in the electromechanical industry.
4. Sensitivity to surface marking
Copper is a soft material that is subject to scratching and imperfections. For this reason, the drawing process requires highly finished dies and the use of specific lubricants to reduce friction and preserve surface quality.
5. Risk of strain hardening
Like all metals, copper hardens during drawing, resulting in loss of plastic reserve and percentage elongation. The finished part will therefore be harder with higher mechanical strength.
6. Application versatility
Due to the unique combination of malleability, strength and conductivity of this material, copper drawing is used to create components in a wide range of sectors, including the medical and energy industries.
7. Custom die design
For best results, copper dies must be designed to prevent defects such as wrinkling or breaking on the deep-drawn part. In addition, specific oils that do not lead to corrosion must be used during the stamping process.
In summary, the copper drawing process requires advanced equipment, specific expertize, and optimized fabrication techniques to make the most of the extraordinary properties of this metal.
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