CHROMIUM-CONTAINING CEMENTED TUNGSTEN CARBIDE COATED CUTTING INSERT

• Main Authors: JINDAL, PREM, C, NORTH, BERNARD
• Format: Patent
• Language: English; French
• Published: 01.08.2002
• Edition: 7
• Subjects: ALLOYS; 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; DIFFUSION TREATMENT OF METALLIC MATERIAL; FERROUS OR NON-FERROUS ALLOYS; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; MILLING; PERFORMING OPERATIONS; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; TURNING

A chromium-containing coated cemented tungsten carbide cutting insert (10, 40) that has a substrate (18, 42) and a coating (30, 32, 34, 50). The substrate comprises between about 5.7 and about 6.4 weight percent cobalt, between about 0.2 and about 0.8 weight percent chromium and the balance tungsten and carbon, and a coercive force of about 195 to 245 oersteds. L'invention porte sur un insert (10, 40) d'outil de coupe de carbure de tungstène cémenté enrobé contenant du chrome comprenant un substrat (18, 42) et un revêtement (30, 32, 34, 50). Le substrat, qui comprend entre environ 5,7 et environ 6,4 % en poids de cobalt, entre environ 0,2 et environ 0,8 % en poids de chrome et le reste de tungstène et de carbone, présente un champs coercitif d'environ 195 à 245 oersteds.