Effects of Several Test Variables on Evaluation of Particleboard Abrasiveness

The effects of number of cuts (degree of knife dulling), depth of cut, knife hardness, and knife-sharpening techniques on evaluation of the abrasiveness of particleboard were studied. The experimental procedure involved automatic edge-machining of particleboard on a shaper and calculation of abrasion parameters based on wear (weight loss) incurred by the shaper knife divided by either the weight or volume of material removed from the sample. Abrasion parameters were independent of number of cuts, or degree of knife dulling, over the range of 50 cuts (about 19.4 linear meters) to 250 cuts (about 97 linear meters). One hundred cuts were sufficient for accurate evaluation of abrasiveness. The abrasion parameters decreased from 2.6 u/g to 1.7 u/g when depth of cut was increased from 0.16 cm to 0.44 cm. Abrasion parameters increased somewhat as knife hardness decreased, and were increased by a severe knife-sharpening procedure.

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