Copper & Brass Strip Slitting Lines
Copper strip is the most valuable material that passes through a slitting line — which changes the economics of everything. Edge trim is money, burrs are rejects in electrical applications, and a marked surface downgrades material priced by the kilogram.
Friend Engineering Works builds precision slitting lines for copper and brass processors: transformer strip, busbar blanks, cable industry strip and brass strip for hardware and ammunition. Lines are configured for burr-free electrical-grade edges and maximum trim recovery.
Why Copper Slitting Is a Precision Job
- Electrical-grade edges: burrs on transformer or busbar strip cause insulation damage and field concentration — edge quality is a functional spec, not cosmetic
- High material value: scrap winders and trim handling are sized to recover every kilogram of edge trim cleanly for remelt
- Soft, gall-prone surface: copper picks up marks from bare rolls; contact surfaces are covered or non-metallic
- Work-hardening tempers: from soft annealed to spring-hard brass, knife clearance and tension are set per temper
Copper & Brass Line Specifications
| Parameter | Configuration |
|---|---|
| Materials | ETP copper, DHP copper, brass (63/37, 70/30), bronze |
| Thickness range | 0.1mm – 4mm |
| Width tolerance | ±0.1mm, burr-free electrical-grade edges |
| Tension control | Fine-adjustment pads/units scaled for non-ferrous strip |
| Trim recovery | Dedicated scrap winders for clean, sorted trim coils |
Applications
- Transformer winding strip and foil
- Busbar and switchgear blanks
- Cable industry copper tapes
- Brass strip for hardware, zippers, lamp caps and ammunition
- Connector and terminal strip for electronics stampers
Recommended Equipment
- Slitting Line — Friend Engineering Works slitting lines are designed to ensure the highest standards of quality and productivity while processing different materials.
- Recoiler Machine — Our recoiler machines provide consistent tension control for rewinding processed metal strips.
- Straightening Machine — Our straightening machines use multiple precision rollers to achieve flatness in metal sheets and strips.
Frequently Asked Questions
What edge quality can be achieved when slitting copper strip?
With correct knife grade, clearance and tension, slit copper edges are burr-free to electrical-industry standards — suitable for transformer winding and busbar use without secondary edge finishing. For the most demanding applications, edge conditioning can be added downstream.
How is expensive copper edge trim handled?
Edge trim on copper is revenue, not waste. Our lines wind trim onto dedicated scrap winders as clean, alloy-sorted coils that go straight to remelt at full scrap value, rather than mixed floor scrap.
Can the same line slit copper, brass and aluminium?
Yes — non-ferrous combination lines are common. The requirements (soft surfaces, fine clearances, low tension) are similar across these metals. Knife setups are changed per material and temper; we provide setup charts for your specific product mix.