Thin Fins Are Easy to Design,
But Hard to Extrude
Real extrusion trial records showing fin deformation,
die correction, and flow stabilization during thin-fin profile production.
01 Problem → Thin-fin instability during die trials
The first trial showed severe fin deformation and unstable flow in the thin-fin section.
After die correction and flow adjustment, the extrusion became significantly more stable.
02 Flow Stability → Metal flow becomes difficult to balance
As fin spacing became smaller, metal flow across the thin-fin area became increasingly difficult to balance.
Thin die teeth and uneven local flow could easily affect fin straightness and extrusion stability.
03 Die Adjustment → Improving fin straightness and stability
After die correction and flow adjustment, fin straightness became more stable across the profile.
Small changes in die structure directly affected extrusion consistency and fin formation.
Fin straightness comparison after die adjustment
04 Production Stability → Consistent thin-Fin extrusion
After multiple tooling refinements, extrusion stability and fin consistency were significantly improved across the full profile.
The final structure was successfully transferred from trial production into stable batch extrusion with improved fin consistency and profile straightness.
Stable thin-fin extrusion result
05 Proven Thin-Fin Structures → Engineering reference from actual extrusion projects
Different thin-fin structures may require different tooling and extrusion control strategies depending on fin density and profile geometry.
The examples below show selected thin-fin extrusion structures developed through actual production experience.
Wide-profile thin-fin extrusion
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