Differential temperature electromagnetic forming method and forming device for plate microporous flanging

Abstract

The invention provides a differential temperature electromagnetism forming method and device of panel micropore flanging. The differential temperature electromagnetism forming method of the panel micropore flanging comprises the steps that S1, a translation route and a flanging route communicating with each other are arranged; S2, preheating areas are arranged above and below the translation route, and a high temperature area is arranged on the side part of the flanging route; S3, plate materials are placed into the translation route; S4, the preheating areas and the high temperature area areheated; S5, radial electromagnetic force is applied to the plate material, so that the plate material extrudes to the flanging route and forms flanging in the flanging route; and S6, the plate material after flanging is completed is taken out. The differential temperature electromagnetism forming device of the panel micropore flanging comprises a male die and a female die, the translation route and the flanging route communicating with each other are formed between the male die and the female die, the preheating areas are arranged above and below the translation route on the male die and the female die, the high temperature area is arranged on the side part of the flanging route on the male die, and a radial horizontal thrust coil used for applying the radial electromagnetic force on the plate material is arranged near the translation route. The differential temperature electromagnetism forming method and device of the panel micropore flanging have the advantages of uniform forming, high plastic deformation capacity, high forming rigidity and capable of improving the hole flanging depth.

Description

technical field [0001] The invention mainly relates to the technical field of high-speed forming in plastic processing of materials, in particular to a differential temperature electromagnetic forming method and a forming device for microporous flanging of plates. Background technique [0002] Small-diameter round hole flanging, especially the round hole flanging of thicker plates, due to the high rigidity of the deformation zone and the large degree of deformation, it is easy to break at the edge of the flanging hole, and the forming process of the steel mold flanging is many, The forming quality is unstable, the forming limit is low, and it is difficult to obtain flanged hole parts that meet the technical requirements. [0003] Electromagnetic pulse forming is a method of high-speed machining of metal workpieces using pulsed magnetic field force, which can effectively improve the forming limit and reduce springback of hard-to-deform materials such as aluminum alloys, magne...

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Problems solved by technology

But for the small hole flanging, this technology has the following problems: (1) when the small hole size is small, the size of the magnetic collector corresponding to the small hole is small

Therefore, the smaller the size of the small hole, the more uneven the distribution of the magnetic field force on the sheet due to the longitudinal seam of the magnet collector, so that the deformation of the part after flanging is uneven; (2) During the flanging process, it is difficult for the material at the flange of the sheet to flow into the concave Mold opening, resulting in low flange height

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