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The market of stainless electric steel kettles is growing significantly,but the main mechanism for polishing kettles via traditional handwork operations limits the growth of electric kettle manufacturing.Based on the successful multi-tool automatic polishing system for electric stainless steel kettles,regression analysis and orthogonal tests were employed to construct a polishing process model,with a purpose to improve the automatic polishing technology for electric stainless steel kettles.The model reveals the relationship between the surface roughness and processing parameters including gringding depth,abrasive tangent speed,workpiece rotating speed and axial feeding speed.Simulation and experimental results are in agreement,which shows that this modeling method is feasible in practice,and it can also be used as a guidance for planning automatic polishing process of electric stainless-steel kettles.