| abstract |
THE INVENTION CONCERNS METAL MACHINING. THE CUTTING TOOL WHICH IS THE OBJECT OF THE INVENTION, EQUIPPED WITH A WEAR-RESISTANT COATING, CONSISTING OF REFRACTORY COMPOUNDS OF DIFFICULT FUSIBLE METALS, IS OF THE TYPE INCLUDING BETWEEN THE SUBSTRATE AND THE COATING AN INTERMEDIATE LAYER OF PURE METAL , AND IS CHARACTERIZED IN THAT THE SUBSTRATE IS MADE OF CERAMIC OR METALLOCERAMIC MATERIAL BASED ON ALUMINUM OXIDE AND IN THAT THE SAID INTERMEDIATE LAYER IS DISCONTINUED. THE INVENTION ALLOWS TO REDUCE THE COST OF MANUFACTURING THE TOOL AND TO IMPROVE ITS HOLD. |