Polycrystalline Cubic Boron Nitride (PCBN) cutting tools

Composed of many fine-grained (0.1 ~ 100) CBN CBN coalescing aggregates formed a class of super-hard material products. In addition to its high hardness, high wear resistance, but also has high toughness, chemical inertness, red hardness, etc., and can open the blade diamond grinding wheel. In all aspects of cutting grinding wheel excellent cutting performance, able to achieve stability at high temperature cutting, particularly suitable for processing a variety of hardened steel, tool steel, chilled cast iron and otherSynthetic diamond materials. Cutting tool sharp and good shape retention, high wear resistance, wear a small amount of units, fix the number of small, beneficial automatic processing of applications from roughing to finishing all the cutting. Finish turning of hardened workpiece is a new technology, process testing to be done prior to the synthetic diamond, use and workpiece material, hardness and size of the same bar, in the same machine for finishing or roughing test, the key is to experiment with the cutting tool parameter selection and process systems have sufficient rigidity. The process is currently the country has adopted, such as FAW Group with PCBN tooling carburizing (58 ~ 63HRC) of 20CrMnTi transmission gear shift fork groove, using the process parameters υc = 150m/min, f = 0.1mm / r, αp = 0.2 ~ 0.3mm, achieved by turning instead of grinding.