Improvement of Sawmill Cutting Tool Sharp Life By Surface Hardening

This paper reports on a spark impregnation process called Carbitroning” that is reported to increase service life of chipper blades, planer knives, circular saws, and edger bits from 200 to 800 precent. In spark impregnation, the transfer of impregnating material takes place through an arc passing from anode composed of the impregnating material to the metal tool which is the cathode. Recent modifications to the basic process have greatly reduced the cost, and the process has now been successfully applied to the hardening of forging dies and hard rock drilling bits.

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