Good slitting turns wide coils into clean narrow coils with the width, edge and flatness your line needs. Three things make the difference: the right target width, burr control and flatness/camber limits your process can handle.
Pick the right width
- Allow for your process: with edge-guiding/trim you can take tighter widths; without, give a little more tolerance.
- Guides: 0.3–1.0 mm → ±0.05–0.10 mm; 1.0–3.0 mm → ±0.10–0.20 mm (confirm by material/line).
- Ask the slitter to confirm spacer thickness and cumulative stack to hit nominal.
Control burr
- Set knife clearance to thickness/material; too little rubs (burr up), too much tears.
- Agree burr height (e.g., ≤ 5% of thickness or ≤ 0.03 mm) and measure high/low edges.
- Orient burr to the non‑cosmetic side for roll-forming.
Flatness and camber
- Recoiler tension to avoid telescoping/edge buckle.
- Camber limit per 2 m or per coil; enough to thread your line without edge wander.
- Request max wave height/wavelength or leveling after slitting for sensitive lines.
Edge condition
- Mill vs slit edges; consider deburred or lightly chamfered where fingers/visible edges are involved.
- Interleave paper/film on stainless or painted stock.
Spec (copy/paste)
- Material: 304 2B coil, 0.80 mm
- Slit to: 6 strips × 150.00 mm, tolerance ±0.08 mm
- Edges: Slit; burr ≤ 0.03 mm; burr to non‑cosmetic side
- Flatness: Camber ≤ 1.5 mm per 2 m; no edge wave visible on lay‑flat
- Packing: Paper interleave; plastic-wrapped; wood skids; labels per strip
FAQs
Q: Which side should burr face?
A: The non‑cosmetic side or the side that will be hidden in a fold.
Q: How tight can tolerance be on 0.5 mm stainless?
A: ±0.05–0.08 mm is realistic on a tuned line—confirm before PO.
Q: Can you remove burr?
A: Light deburr is possible; for safety edges consider chamfer.
Baoli Engineering Team · Reviewed Oct 31, 2025