Mapal says it has developed a CVD-coated cutting material series tailored to the demands of boring in all cast materials – GJL, GJV and GJS. The new cutting materials HC720, HC725, HC730 and HC735 differ in the carbide substrate used in each case. The company claims they offer a heat-resistant α-aluminium oxide coating with very good coating adhesion.
The company says these cutting edges with the new coating offer the potential for an increase in the cutting speed during boring, even with dry machining and longer tool lives.