Abstract
The novel magnetic gasbag polishing technology is presented in this paper. It can be used in polishing the contact or non-contact zone between gasbag and mould surface. By means of the interaction between magnetic field and magnetic abrasive, the magnetic abrasive brush is formed, and abrasive particles filed can be controlled actively. The force of a single magnetic abrasive in the contact or non-contact zone is analyzed. Moreover, the simulation is performed for the magnetic field generated by permanent magnet in gasbag polishing tool. The original state and feature of magnetic field distribution are obtained. On this basis, the changes of magnetic field in different downward depth and inclination angle of polishing tool are simulated and compared. Then, the magnetic field distribution in actual polishing is obtained. The polishing effect of the neighborhood of gasbag contact zone is studied by fix-point and movement polishing experiment, and a smooth high quality surface can be obtained. After movement polishing with beeline trajectory, the surface roughness of the neighborhood of gasbag contact zone reaches Ra 0.25μm.
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