Numerical and experimental analysis on multi-pass conventional spinning of the cylindrical part with GH3030

Metal spinning, as a kind of rotary forming process, is widely applied in the production of various areas. In this paper, the mathematical model of the conchoid roller path is proposed based on the cylindrical part and applied in the experiments. The possible problems of the roller path and the product shape are verified by 2D simulation, while the 3D simulation is used to predict the product dimensions and defects. Based on the advantage of both 2D and 3D simulation, the flow of target product trial production is proposed. The simulation is verified by the experiments with hard-deformed superalloy GH3030. The crack mechanism of cylindrical part spinning process is studied with a combination of macro- and micro-methods. Results show that the forming effect of the conchoid roller path is good; the flow can reduce the trial production cost and time. The grain elongated obviously at the crack zone while metal accumulated at the edge of the product which is the main cause of the crack.

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