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Fire Damper Blade Line vs Frame Line
Table of Contents
1. Different jobs
HVAC damper plants need both a frame (outer casing members) and blades (moving vanes). Industry articles treat them as paired machines with different dies: the frame line builds the structural envelope with multi-punch notching; the blade line forms flat, V, or airfoil sections that must fit that frame.
Sharing one roller set for both is not a default.
2. Parameter snapshot
| Item | Blade line (ref.) | Frame line (ref.) |
|---|---|---|
| Role | Damper vane / VCD blade | Damper casing / VCD frame |
| Speed | ~0–15 m/min | Punch line ~0–6 m/min (VCD EN variant up to ~20 — do not merge) |
| Main power | ~11 kW (+ hyd ~4 kW) | ~7.5 kW form (+ ~20 kW installed class) |
| Stands | ~14 changeable | ~16 |
| Thickness | ~1.8 mm GI | ~1.5–2.0 mm (EN ~1.5–1.8) |
| Punch story | Stop cut + end drawn holes (~6 mm) | Servo feed + multi hyd punch before form |
3. Workshop pairing
- Order blade and frame lines separately; keep CAD for each.
- Riveting / folding platforms are often third machines in market “full damper workshops” — confirm scope.
- Do not import C/Z structural mill or full auto duct-box folder numbers into either column.
4. What not to mix
- Do not paste blade 11 kW into a frame RFQ (or frame 7.5 kW into a blade RFQ).
- Do not treat frame EN ~20 m/min as the blade speed answer.
- Do not assume one “damper machine” quote covers vanes, frames, and box folding.
- Do not import C/Z structural or rectangular-duct host numbers into either column.
If a brochure shows a “complete damper workshop,” list each host (blade, frame, fold/rivet) with its own rating table before comparing capacity.
5. Inquiry checklist
- Name blade, frame, and any folding/riveting need explicitly
- Attach both CAD packages
- Pick frame punch-band document (recommended 0–6 vs EN ~20)
- Confirm GI thickness per member
A single photo of an assembled damper is useful context, but still name each forming host on the RFQ.
6. Buyer FAQ
One inquiry for “damper machine” — enough?
Name blade, frame, and any folding/riveting need. Ambiguous “damper line” invites mixed ratings.
Which is faster?
Blade reference forms up to ~15 m/min; frame punch band is slower (~0–6). Compare apples to apples on the named proposals.
Can one roller set make both?
Not as a casual changeover. Dies, punch layouts, and strip widths differ — buy as a workshop pair.
Where do full auto box folders fit?
Often a third machine class after frame profiles are cut — specify separately from blade and frame mills.
Selection map only. Final ratings follow the confirmed blade and frame proposals. Price and lead time are out of scope.