Progressive magnetic pulse forming method and device for thin-wall metal annular shell part

Abstract

The invention discloses a progressive magnetic pulse forming method for a thin-wall metal annular shell part, and relates to the technical field of forming of large thin-wall metal annular shell parts. The progressive magnetic pulse forming method comprises the following steps that a thin-wall metal annular shell and a forming assembly are installed; the coil and the forming assembly are positioned; the gap between the thin-wall metal annular shell and the forming assembly is adjusted to be uniform; first-step forming; follow-up forming is conducted, the position of the thin-wall metal annular shell on a forming assembly is kept unchanged, the coil is moved relative to the thin-wall metal annular shell according to the set feeding step pitch, the non-deformation area of the thin-wall metal annular shell enters the coil working area, and after discharging parameters are set, discharging machining is conducted; and the fifth step is repeated until the whole forming process of the thin-wall metal annular shell is completed. The invention further discloses a progressive magnetic pulse forming device for the thin-wall metal annular shell part. The large thin-wall metal annular shell is driven by the gradual pulse magnetic field force, so that precise forming of the thin-wall metal annular shell is realized.

Description

technical field [0001] The invention relates to the technical field of forming large-scale thin-walled metal annular shell parts, in particular to a progressive magnetic pulse forming method and device for thin-walled metal annular shell parts. Background technique [0002] At present, electromagnetic forming is developing in the direction of high energy, large size and high efficiency. The traditional electromagnetic forming process has two disadvantages in forming large parts: one is that the equipment energy is insufficient, and the energy utilization rate in the electromagnetic forming process is very low, and the energy utilization rate of pipe forming is less than 20%; the second is that the coil life is short, and forming large parts requires Large coil life, however, during the forming process, the existing coil is prone to failure and deformation due to the influence of magnetic field force and thermal effect. [0003] Thin-walled metal ring-shaped casings are a ty...

AI Technical Summary

Problems solved by technology

The traditional electromagnetic forming process has two disadvantages in forming large parts: one is that the equipment energy is insufficient, and the energy utilization rate in the electromagnetic forming process is very low, and the energy utilization rate of pipe forming is less than 20%; the second is that the coil life is short, forming large parts requires Large coil life, however, during the forming process, the existing coil is prone to failure and deformation due to the influence of magnetic field force and thermal effect

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