Abstract
Abstract Active fillers play a major role in the dry grinding of stainless steel. However, the mechanism altering the process is still unknown. In this work, the efficiency of cryolite as filler was studied with a pin-on-disk tribometer. Simplified coated abrasives with and without active filler were used to reduce possible non-cryolite related interactions to a minimum. Diffusion experiments with stainless steel pins and cryolite were performed and the change in efficiency during abrasion investigated. The analysis of the pins revealed a FexCr1-xF2 phase. Tensile tests were performed of heat-treated specimens to investigate changes in brittleness. Finally, dissolution experiments were conducted, which proved a decrease in built-up edge volume in presence of cryolite, leading to a higher cutting efficiency.
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