Uhlmann, EckartEckartUhlmannHein, ChristophChristophHeinDargin, MuzafferMuzafferDargin2024-08-062024-08-062023https://publica.fraunhofer.de/handle/publica/4728372-s2.0-85175206189In order to be able to use the resources more sustainably and at the same time reduce the costs of machining, it is important to identify new types of cutting materials. Up to now, tools made of carbide have often been used in machining. Carbide has a high hardness H and, compared to other tool materials, enables long tool life T. This has a positive effect on process reliability. Conventional carbide usually consists of tungsten carbide WC and cobalt Co. The tungsten carbide WC represents the hard material itself. The cobalt Co is a binder and ensures that the hard materials are kept together. This combination makes the carbide less hard than the pure hard materials. The reduction of the hardness H of the material also results in a reduction in the tool life T of the milling tool. Various approaches are being pursued to increase the tool life T of the milling tool. One approach is the reduction of the binder in carbides. The reduction of the binder increases the hardness H of the material and thus the tool life T of the milling tool. Conventional carbide has a cobalt content of 6% < Co < 10%. The new cutting material, the binderless carbide, on the other hand, has a cobalt content of 0.40 % < Co < 3 %. The complete elimination of a binder is not possible from a manufacturing point of view at this time. To validate the milling tool made of binderless carbide, it is compared with milling tools made of conventional carbide. The two milling tools have identical geometries. This is to ensure that the influence of the cutting material on the machining result can be identified. For this reason, the identical experimental milling tests are carried out with the milling tool made of binderless carbide and the milling tool made of conventional carbide. The following parameters are recorded during the experimental tests: - Mean roughness depth Rz depending on the cutting path lc - Arithmetic average roughness Ra depending on the cutting path lc - Cutting edge rounding rß depending on the cutting path lc The experimental results show that the increased hardness H of the material has increased the tool life T of the milling tool. This makes it possible to use the available resources more sustainably and efficiently. In addition, the increase in tool life T results in an increase in the economic efficiency of milling.enCobaltMillingMilling toolsTungsten carbideWear behaviourconference paper