Patent ID: 6241431
Filing Date: 2001-06-05
Classification: C23C,Y10T

Abstract:
A set of two machining tools for satisfying different service requirements of two different cutting applications, comprising:a first machining tool comprising a basic body of metal, the basic body having a first active cutting region that contains a first cutting edge and a first surface area that is spaced from the first cutting edge but which is still part of the first active cutting region, a first hard material coating on the first active cutting region, the first hard material coating having a material composition which is constant along all of said first active cutting region, from said first cutting edge to said first surface area, so that said first machining tool is useful for a first application requiring higher adhesive strength of the first hard material coating as compared with the hardness of the first hard material coating; anda second machining tool comprising a basic body of metal, the basic body having a second active cutting region that contains a second cutting edge and a second surface area that is spaced from the second cutting edge but which is still part of the second active cutting region, a second hard material coating on the second active cutting region, the second hard material coating having a material composition which varies along said second active cutting region, from said second cutting edge to said second surface area, so that said second machining tool is useful for a second application requiring higher hardness of the second hard material coating as compared with the adhesive strength of the second hard material coating.