PVDAl2O3 canning cutting tool

摘要

(57) Abstract This invention regards the canning cutting tool for metal machining. Coat heatproof chemical compound 1 or includes multiple formations, at least one of the formation of that consists of the crystal gamma-phase alumina (Al₂ O₃) of the fine crystal grain which possesses the crystal grain size under 0.1 millimicrons. As for Al₂ O₃ formation, depending on the material of specification of the tool itself canning, 450 - 700 , desirably it is formed with bipolar impulse DMS modulo (duplex magnetron sputtering) 550 - 650 in backing material temperature. Alumina phase is texture converting to direction (440) very and strongly. Al₂ O₃ formation is not included substantially the crack or the halogen impurity, Al₂ O₃ formation brings the completion of the very smooth surface to the cutting edge of the tool, to also the processed component where the is machined brings the improvement of the completion of the surface. When canning the cemented carbide cutting tool, being used for machining the steel or the cast iron, you can see several important revised dots until recently by comparison with technology.