The curvature of copper-clad aluminum strip is one of the important indicators to measure its flexibility, ability to adapt to the installation environment and the firmness of the copper layer.Photovoltaic welding ribbon, electronic connection belt and other scenes.Copper clad aluminum strip bendingDetailed description:
? What is curvature?
Flexibility refers to the ability of a material to resist deformation when bent, generally expressed asMinimum bending radius(Bending Radius) orNumber of bendsFor copper-clad aluminum strip, the curvature shows its structural integrity and the stability of the copper-aluminum layer bonding.
? Key parameters of copper clad aluminum strip bending performance
| parameter | Conventional performance (reference value) | illustrate |
|---|---|---|
| Minimum bending radius | ≥10D (D=strip thickness) | Bending radii less than 10 times the tape thickness are generally not recommended |
| Bending times | ≥10 times (no copper layer cracking/falling off) | Indicates the maximum durability of the strip bending back and forth |
| Copper layer bonding strength | ≥10N/cm（RaytronExcellent level) | A strong combination can support multiple bends |
| Recommended copper layer thickness | ≥0.05mm | When the copper layer is too thin, it is easy to crack or lose its conductive performance when bent. |
| Thickness tolerance | ±0.003mm (high-quality strip) | The smaller the better it is at maintaining a stable structure when bending. |
? Factors affecting bending performance
- Copper-aluminum bonding process
- Adopt high pressure hot compound or continuous calendering technology, which can be tightly combined and bend without delamination;
- Copper layer thickness
- If the copper layer is too thin (e.g. <0.03mm), it is easy to crack or break during bending;
- Strip hardness matching
- If the hardness is too high, it is not easy to bend; if the hardness is too low, it is easy to collapse and deform;
- Whether annealing treatment
- Fully annealed copper-clad aluminum strip has better flexibility and is suitable for frequent bending processes;
- Strip width-to-thickness ratio
- The larger the width-to-thickness ratio, the more likely it is to cause curling or "edge chipping".
? Ruichuang's advantages (with examples)
High performance produced by RuichuangCopper clad aluminum strip, bending performance can achieve:
- Copper layer thickness ≥ 0.05mm, peel strength > 12N/cm;
- No cracking after repeated bending at ±180° for more than 10 times;
- Comprehensive annealing process + high-precision calendering technology, no delamination or warping when bending.
English 
Chinese 
Japanese 
Spanish 
Russian 
Dutch