Research on Rheological Property of Magnetorheological Fluid

摘要

The magnetorheological (MR) fluid is a new functional material. It is colloidal solution that solid grain was spread around fluid equably. It has been used in many regions for good controllable feature and mechanical feature. As for advanced optical manufacturing technology, magnetorheological finishing (MRF) was decided by the rheological property of MR fluid to a great extent. Take into account the need of MRF, the components of MR fluid were chosen, the evaluate system of rheological property of MR fluid was established. The effect on MR fluid by component scale is researched by experiments on measurement equipment. From that, the rheological property that magnetorheological fluids in the presence of an applied magnetic field and in the different shear strain rate was obtained. Meanwhile, the effect on MRF is researched by experiments on the MRF prototype machine e tool. The influence to surface quality was analyzed. The results shows that the relationship among the rheological property and the component scale of MR fluid and applying effect can be established by the theoretically analyzed and experiment research. The results provide the basis for MR fluid engineering development and engineering applications.