Tungsten Carbide Woodcutting Tool Cutting Edge Wear Forms

Generally ,there are three typical cutting edge wear forms of a tungsten carbide woodcutting tool  regarded to its working environment and tool life, which may occur simultaneously. The three types could be cataloged as rounding wear, free surface wear and erosive wear.



Depending on geometric descriptions of the worn, the tool nose rounding could be examined. Rounding wear defines the rounding off of the cutting edge so that it has a constant radius. Free surface wear defines a combination of rounding wear and in addition flattening of the edge occurs. Erosive wear occurs in the area close to the cutting edge. There are many ways in which to describe the changing wear profile , simply the three dimensional descriptions are listed as, the edge recession from the original edge parallel to the rake face(RR), the cutting edge offset(CEO) and the nose width(NW).


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