Corrosive Wear of Veneer Knives

The wear of a veneer knife when cutting of alpine on a veneer lathe with and without 60 volts of negative potential applied between the knife and nosebar was determined. The knife edge recession with potential applied was about 40 percent of that without potential. The veneer cut was 1/24 inch thick. By allowing extension of the working period between knife grinding from one to two shifts, potential savings of 50 percent of the cost of the knives and labor was estimated. Blue staining was not eliminated. It appears that corrosion is a dominant factor in knife wear. Some problems may arise in establishing a potential between the knife and nosebar; one of these elements must be insulated and possible safety devices provided. Further corrosion-wear studies should be considered.

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