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Metal Stamping - Fine Blanking
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Fine blanking is an advanced metal forming process used to produce high accuracy, high quality stamped metal parts having burr-free, clean edges.
Some Advantages of fine blanking over conventional blanking
- Components of very high accuracy are attainable - tolerances of plus or minus 0.015mm are achievable
- Holes with a diameter as small as 60% of the material thickness can be pierced
- Material up to 20mm thick can be fine blanked.
- The edge quality and accuracy of the fine blank process can eliminate the need for secondary processes e.g. reaming of holes or shaving to get a square smooth edge
- Components remain very flat.
- Components can have features such as countersinks, extrusions, semi-pierces, weld projections, coined chamfers, counter bores, and offsets applied to them in the pressing operation.
- Tooling is generally of a compound nature (as opposed to progressive type). This ensures superior positional accuracy between features.
- Tooling prices are competitive compared with conventional tooling.
- Virtually any metal can be fine blanked.
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