Small sizeCopper clad aluminum strip(e.g. 0.05×2mm, 0.1×3mm, 0.15×4mm, etc.) because it is widely used inPhotovoltaic welding ribbon, battery connectors, microelectronics and other high-precision applicationsThe technical requirements for dimensional accuracy are very highThe following are the dimensional accuracy requirements that these products need to achieve in industrial applications:
? Technical requirements for dimensional accuracy of small-sized copper-clad aluminum strips
one,Thickness accuracy requirements
- Tolerance range：±0.003 mm ～ ±0.005 mm
- Control measures：Use high-precision rolling equipment, combined with laser/inductive online thickness measurement system
- stability: The thickness deviation of the whole roll is controlled within ±3%
two,Width accuracy requirements
- Tolerance range: ±0.02 mm or tighter (RaytronControllable to ±0.01 mm)
- Cutting method：Use high-precision slitting equipment, blade wear control is the key
- Edge Control: No burrs, no warping, no cracks
three,Thickness-to-width ratio consistency
- Small size stripThe thickness-to-width ratio may exceed 1:20~1:50, the equipment is required to haveWide pressure balance compensation systemOtherwise, "width drift" or "thickness jump" problems are very likely to occur.
Four,Edge quality control
- No Blade, no curling, neat and clear edges
- No micro cracks or delamination, especially the edge bonding of copper-aluminum junction must be good
five,Curvature (flatness) requirements
- The curvature is less than 1.5‰ of the strip length(For example, the maximum bend of a 1 meter long strip is no more than 1.5 mm)
- Leveling: Use tension control + leveling wheel group for precise straightening
six,Transverse consistency of thickness (lateral deviation)
- Transverse (from one side of the strip to the other side) thickness difference ≤ ±0.002 mm
- Control method: rolling mill roll temperature balance + load balance system
seven,Surface finish and dimensional accuracy
- Dimensional accuracy does not exist alone, but also withSurface roughness Ra ≤ 0.8μm or lessMatch
- Smooth surface ensures welding consistency, prevents cold joints and increased resistance
?? Examples of Ruichuang’s technical advantages:
- High-precision imported 20-roll rolling mill, thickness tolerance can be controlled up to ±0.003mm
- Real-time online detection system, automatic feedback to adjust thickness
- Professional small-size winding and slitting system to prevent edge warping and tape breakage
- Strict SPC measurement and sampling statistical system to ensure batch size consistency
If you want, I can help you design a set of technical parameter specifications for small-sized copper-clad aluminum strips, or a page of exquisite customer specification confirmation (in both Chinese and English). If necessary, tell me several specifications you commonly use.
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