Wood processing

Knife cracks

Knife Cracks (Wood processing)

The chipper/flaker knives sometimes break which might have various reasons:

1) The chipper knife hits foreign matters or impurities (for example metal/bearing balls/stones...)

This foreign matter can reach into the chipper machine when it passed the steel detector at the beginning of the process chain. When the knife hits steel / stones normally there will be outbreaks on the cutting edge. This cannot be avoided, unfortunately.

2) Improper regrinding from customer might also cause knife cracks

3) Improper knife installation

  • First of all you have to check the steel detector and cleaning of the wood. Regarding the knife a lower hardness or a different and very low steel grade may reduce the outbreak.
  • Check for suitable grinding abrasives and/or cooling during regrinding process. TKM can assist and give recommendations ad 3) Knives might not fit 100% into the holder. Customer must check and clean the knife holder.

Do you need further information?

We could not clarify your individual request, or you have a question concerning another topic?

Then we will be happy to help you by phone: +49 2191 969 325   or by e-mail at: wood@tkmgroup.com

You can also send us your message using the following contact form.