Solid carbide milling cutter

roughingcobaltcutting edge

For stainless, austenitic steels like the workpiece materials 1.4571 or 1.4462, the material remo­val rate was markedly increased compared to past tool solutions. The tool life has even been doubled. The number of cutting edges contributes to performance gains, but that’s not all. Many factors play a role in this success. The biggest step forward was related to cutting material – a combination of new carbide types and a corresponding coating. Trochoidal milling is a very dynamic machining process, which manages an extremely high material removal rate when roughing to quickly mill a part that is close to its final contour. The milling cutter continuously plunges into the material and resurfaces again. This imposes special demands on the cutting edge with regard to high impact strength. Tough carbide is less sensitive Especially when it comes to machining stainless steel and dynamic processes like trochoidal milling, a tough carbide is required. It is less susceptible to breakage and jolts, so it does not chip as easily. Wear and tear can be greatly reduced with tough tool material. MAPAL achieves this high impact strength through the high cobalt content of the carbide. Further material additives ensure that the new cutting material HP826 also has similar hardness cha­racteristics to more brittle carbide. The cutting material was specifically developed for milling applications in the workpiece material groups ISO M and S. It does not react as sensitively to knocks or chip jamming as harder carbide with less cobalt content. Additives with higher thermal conductivity offer certain advantages during machining.