Electromagnetic Flanging Forming of Pipe Fitting Based on Bidirectional Electromagnetic Force Loading of Convex Coil
The single electromagnetic force of the traditional coil leads to the poor flanging angle of the pipe fittings.A method of flanging a pipe fitting with a convex coil was proposed.By designing a new type of coil,two-way electromagnetic force was provided for the flanging of the pipe fitting at the same time.Two sets of models were established,and the traditional coil and the convex coil were used to drive the electromagnetic flanging forming of the pipe fittings,respectively and the changes of the electromagnetic force vector and the deformation rate during the flanging forming process of the two sets of pipe fitting models were discussed and analyzed.The results show that the results show that the bidirectional electromagnetic force provided by the convex coil when loading the flange of the pipe greatly improves the fluidity of the deformation of the pipe,thereby increasing the flange angle.In addition,under the same discharge parameters,the flange angle of the pipe fitting based on the convex coil is 1.25 times higher than that of the traditional coil.Obviously,the new coil can improve the quality problem of electromagnetic flanging of pipe fittings to a certain extent,and provide more possibilities for the industrial application of electromagnetic flanging forming.
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