CUTTING TOOL MADE OF SURFACE COATED CEMENTED CARBIDE EXCELLENT IN WEAR RESISTANCE

• Main Authors: SUDO TOSHIKATSU, UCHIDA SUSUMU, TANAKA TETSUYA
• Format: Patent
• Language: English
• Published: 09.06.1998
• Edition: 6
• Subjects: BORING; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; COMBINED OPERATIONS; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; OTHER WORKING OF METAL; PERFORMING OPERATIONS; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; TURNING; UNIVERSAL MACHINE TOOLS

PROBLEM TO BE SOLVED: To provide a cutting tool made of surface coated cemented carbide excellent in wear resistance and showing an excellent cutting performance over a long period. SOLUTION: This cutting tool made of surface coated cemented carbide is obtd., on the surface of a substrate of WC base cemented carbide or cemented carbide composed of TiCN base cermet, by forming a heated and oxidized vapor depositing hard layer having a structure in which fine Ti oxide and Al oxide are dispersedly distributed on a basis composed of (Ti, Al) NO and/or a heated and oxidized vapor depositing hard layer having a structure in which fine Ti oxide and Al oxide are dispersedly distributed on a basis composed of (Ti, Al) CNO by the average layer thickness of 0.5 to 15μm.