Where the
world gathers for metal finishing
Q&As since 1989


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Punch And Die Surface Finishing

2003

1) Is the surface finishing of the piercing punch and die important?

2) Will the surface finishing of the punch and die causes high burr to the stamped product?

3) Where can I find the resources of the surface finishing of the punch and die?

Chong Joo Peow
Process Engineer - Singapore

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First of two simultaneous responses --

Some interesting work on surface finishing stamping dies was published approx. 10-15 years ago. in one application stamping dies for beer can tabs from aluminum had their service life extended by TEN TIMES. This was done because the specialized finishing procedures altered surfaces in a way that greatly increased the load bearing ratio of the surface profile.

David A. Davidson
finishing specialist - Spokane, Washington
2003

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Second of two simultaneous responses --

I think you can answer your own question. In any manufacturing process, the finer the machined tolerances and surface finishes the better the end product. That goes for all support mold and dies. In your case, that is true, but you also left out harness, lubricant, etc.

AF Kenton
retired business owner - Hatboro, Pennsylvania
2004