A research based on advance dual-coil electromagnetic forming method on flanging of small-size tubes

Xiong, Qi; Huang, Hao; Xia, Liangyu; Tang, Hongtao; Qiu, Li

doi:10.1007/s00170-019-03498-4

Cited by 28 publications

(14 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Electromagnetic forming (EMF) is a high speed pulsed technology that has been developed to replace conventional mechanical forming [1]- [3]. EMF improves the forming limit of metal materials to a great extent [4], [5].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Electromagnetic Force and Formability of Tube Electromagnetic Bulging Based on Convex Coil

et al. 2020

Self Cite

View full text Add to dashboard Cite

Non-uniform axial deformation and tube wall thinning are the main issues restricting the further development of the tube electromagnetic bulging technology. Aiming at overcoming these issues, a tube electromagnetic bulging method based on convex driving coil is proposed in this paper. An electromagneticstructure coupling model of the tube electromagnetic expansion process is established and the influence of detailed convex coil parameters on radial and axial Lorentz forces are analyzed. Results show that with the new proposed method, the homogeneous length of the tube axial deformation is 4.7 times that of the expansion loading with conventional driving coil. Meanwhile, the issue of tube wall thinning in the conventional electromagnetic bulging method is restrained due to the produced axial electromagnetic force using the proposed convex coil. The proposed tube electromagnetic bulging based on convex coil can effectively overcome the issues currently exist in the conventional tube electromagnetic bulging and promote wide industrial application of the electromagnetic forming technology. INDEX TERMS Electromagnetic forming, tube wall thickness, non-uniform axial deformation.

show abstract

Section: Introductionmentioning

confidence: 99%

Analysis of Electromagnetic Force and Formability of Tube Electromagnetic Bulging Based on Convex Coil

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…Electromagnetic forming (EMF) is an industrial technology that uses high speed pulsed electromagnetic force to achieve a forming process for metal material [1]- [3]. The electromagnetic forming technology features high strain rate (10 3 − 10 5 s −1 ) and hence [4]- [7], it can improve the material plastic deformation ability and increase the forming limit by 5 to 10 times when compared to traditional machining processing [8]- [9].…”

Section: Introductionmentioning

confidence: 99%

Research on Forming Efficiency in Double-Sheet Electromagnetic Forming Process

et al. 2020

Self Cite

View full text Add to dashboard Cite

Improving the forming efficiency at a reasonable cost has been the main challenge in the electromagnetic forming technology. Towards this aim, this paper proposes a simultaneous cost-effective double-sheet electromagnetic forming method using single driving coil. In order to highlight the features of the proposed technique, comparison of the performance of five electromagnetic forming models is presented. These models include a no-sheet model, single-sheet stationary model, single-sheet moving model, doublesheet stationary model and double-sheet moving model. For each model, electromagnetic force distribution and forming efficiency of the workpiece are analyzed. Furthermore, the influence of the pulse current width of the driving coil on the electromagnetic forming efficiency of the plate is investigated for all models. Results show that for the same system discharge parameters, electromagnetic forming efficiency of doublesheet is 21.14% whereas the single-sheet electromagnetic forming model only achieves 14.68% efficiency. Thus, the double-sheet electromagnetic forming technology can improve the low forming efficiency of a single-sheet electromagnetic forming method and at the same time, the method can form two workpieces simultaneously which makes it more cost effective than the single-sheet method. INDEX TERMS Electromagnetic force, electromagnetic forming technology, double-sheet model, forming efficiency.

show abstract

“…Nevertheless, due to the non-axisymmetric structure of the helical coil, it is very difficult to establish the actual helical coil model, which eventually leads to a sharp increase in the high precision calculation of the magnetic field, and the simulation results cannot converge. Hence, researchers usually use software such as COMSOL [12][13][14] , ANSYS/MEGA [15][16] and LS-DYNA [17][18] to analyze the magnetic field by equating the solenoid coil model with a 2-D or 3-D axisymmetric model. What's more, these studies mainly focus on aspects such as electromagnetic bulging [19][20] , electromagnetic welding [21][22] , electromagnetic superposed forming [23] , and the electromagnetic-assisted forming [24][25] .…”

Section: Introductionmentioning

confidence: 99%