Denkena, B., Grove, T., Göttsching, T.:
|Titel:||Material removal and chip formation mechanisms of UHC-steel during grinding|
|Stichworte:||Grinding, UHC-steel, Material removal mechanisms, Chip formation|
The grinding process is still an important manufacturing process for the machining of automotive components. For
power train components, ultra-high carbon steel (UHC-steel) is a promising new innovative alloy because of its low specific density. Results from turning of UHC-steel showed that the texture of UHC-steel significantly differs from conventional steels. Furthermore, extremely hard carbides, which are embedded into a soft ferrite matrix, result in a UHC-steel specific machining behavior and a high tool wear rate. Therefore, UHC-steel is marked as a difficult-to-cut material. So far, there are no research results available for the grinding of UHC-steel. Therefore, fundamental
investigations were conducted in order to analyze the material removal and chip formation mechanisms. Scratching
tests with a geometrically defined cubic boron nitride cutting edge showed ductile material removal mechanisms for a single grain chip thickness variation from hcu = 1.5 up to 14 μm. Analysis of the contact zone by means of an innovative quick stop device confirms these results.