Tungsten Carbide Woodcutting Tool Cutting Edge Profiles (2)

It is known that the cutting edge changes during use, which leads to changes of the strength and wear resistance of the tool and the force system with time. Therefore re-shapern and change should be taken place, when cutting edges reach a critical condition. Given the various tungsten carbide woodcutting tool combinations, the critical conditions need to be assessed for each combination separately. Cleaning the tools at regular intervals limits wear. Uncleaned knives lead to bad quality in wood products, shortens the cutting length and increases the cutting forces. Dirt particles can also act as abrasive wear particles during further cutting.

Frequently cutting edges do not wear evenly and due to a local wear ‘difference’ have to be changed even though they are still operational. The amount of edge recession was found to vary with board density variation, giving a jagged profile.
 

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