Performance of coated carbide tools when grooving wood-based materials: effect of work materials and coating materials on the wear resistance of coated carbide tools

This paper presents the performance of coated carbide tools when grooving v arious density hardboards and wood-chip cement boards. Work materials of lo w density (about 0.8 g/cm(3)) and high density (about 1.2 g/cm(3)) were tes ted. The coating materials studied were chromium carbide, titanium carbonit ride, and titanium carbide, which were synthesized on P30 carbide substrate using a chemical vapor deposition method; titanium nitride, chromium nitri de, and titanium carbonitride were synthesized using the physical vapor dep osition method. Cutting tests were performed during grooving at a cutting s peed of 1000 m/min and a feed rate of 0.1 mm/rev. The results of the study show that the coated carbide tools are more advantageous in reducing the pr ogression of tool wear and retaining lower normal force and noise level whe n cutting both hardboard and wood-chip cement board of high density than wa s the uncoated carbide tool, The wear rate of the coated carbide tools for the wood-chip cement board increased more rapidly than that of the hardboar d with increasing densities. Though the coated carbide tools suffered more wear with the low-density wood-chip cement board than with hardboard, their normal force and noise level were always lower for the low-density wood-ch ip cement board.