Newsletter July 2010

PASS Coating Versions to reduce material build-up

H-PM® tools are produced with steel made on powder-metallurgical base with a high degree of purity to fullfil the highest punching demands. Furthermore we attach great importance to a high quality hardening process by repeated temporing and deep-freeze subsequently. This process guarantees an extremely high hardness with an outstanding wear resistance of our punching tools.

Associated with modern production methods (grinding of the cutting edges with special grinding wheels) we can ensure that the wide range of different sheet qualities can be punched up to 1.600 N/mm² - no matter if it concerns mild alloyed aluminium, mild steel, stainless steel or spring band steel.

A high punch hardness as well as an excellent grinding surface are important in order to counteract the problem with edge build-up. This newsletter will inform our customers of our latest research results concerning modern variation of coatings in order to get a better understanding regarding these problems.
Tests show us that the well-known TICN coating is a good coating to increase the lifetime (especially working with stainless steel). However, the problem of material build-up on the edges have not really been counteracted.

Built-up edges are known especially when working with:

  • zinced steel
  • aluminium sheets

After specialized tests at PASS Stanztechnik AG the below mentioned coatings turned out to be the most successful coatings:

A-MAX coating

for dry processing with aluminium sheet

TICN coating

for working with stainless steel

T-MAX coating

for working with galvanized sheet

We recommend draw-polished punch edges to increase tool lifetime and reduce material build up.

Our technical sales staff working daily with these situations are please to answer any questions you may have.

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PASS Stanztechnik AG

Am Steinkreuz 2
D 95473 Creußen
Germany

Phone: +49 9270/985 - 0
Fax: +49 9270/985 - 99
Email: