| One of the great advantages of Fine blanking is its ability to produce a straight, clean edge. The final quality of the edge surface is influenced by many factors, the main ones being:
- Quality of the Tooling
- Quality of the Raw Material
- Type of Raw Material
- Cutting Lubricant
In mild steel grades such as 1008/ 1010 Cold Rolled, surface finishes of 16 microinches are obtainable. As the material gets harder, and therefore less ductile, edge condition will suffer. Use of full sheroidized annealed material is necessary in many applications.
Fine blanked edges are also extremely perpendicular to the face of the part. For a .25 thick part, perpendicularity of .001 inches is obtainable.
The table below shows how edge finish is related to the die sharpening schedule.
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Fineblanked Edge Quality
