Page 146 - Demo

144 ISCAR GENERAL PURPOSE DRILLINGThis is problematic, especially in automated production plants. To overcome this, chemical vapor deposition (CVD) diamond coating technology is used. CVD is a very hard tool material that is ideal for machining composites and multilayer materials. Applying CVD layers across the entire cutting edge can significantly increase tool life, and due to low CVD friction and high thermal conductivity, tool edges are less prone to built-up edge (BUE). Because the CVD stays sharp, it dissipates heat, has low friction, and minimizes the tendency for bore problems. Thus, CVD grade is preferred where there are a large number of holes and higher productivity is required. SCD...CVD provides excellent tool life, reduced tool changes, and repeatability and reliability when machining composite materials. The SCD...CVD is a specialty cutting tool that is critical to successful holemaking, especially in components made from composite or stacked materials. Such a tool can also play a critical role in helping companies fully automate their processes, even when processing rigid composite materials.