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Magnetic collector for electromagnetic bulging

A magnetic concentrator and bulging technology, applied in the field of magnetic concentrators for electromagnetic bulging, can solve the problems of unfavorable air circulation cooling treatment, excessive weight of the magnetic concentrator, poor ventilation and heat dissipation performance, etc., to improve the forming efficiency, simple processing, lightening quality effect

Pending Publication Date: 2022-08-09
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the electromagnetic forming technology, most of the existing magnetic collectors for bulging are a solid rotating body. The pulsed magnetic field generated by the driving coil will induce a large eddy current in the magnetic collector. Due to the skin effect of the current, the induced eddy current tends to concentrate the flow at the surface of the collector; this means that there is only a small amount of stray current in a large part of the middle of the collector, which has no effect on shaping and brings unwanted ohms loss, so this part belongs to the "useless area", resulting in waste of materials and excessive weight of the magnet collector; moreover, the pulsed large current flowing through the magnet collector is bound to bring about a sharp heat change, and the solid metal body structure makes the overall shape The ventilation and heat dissipation performance of the system is poor, which is not conducive to air circulation and subsequent cooling treatment

Method used

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  • Magnetic collector for electromagnetic bulging
  • Magnetic collector for electromagnetic bulging
  • Magnetic collector for electromagnetic bulging

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Experimental program
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Effect test

Embodiment 1

[0027] Refer to figure 1 -Attach Figure 4 As an embodiment of the present invention, an electromagnetic bloating is proposed, which includes a magnetic bodel 10 and a coil 20, the magnetic body 10 includes the inner sleeve 11 and the coat connected to the outer side of the inner sleeve 11 Body 12, the inner sleeve 11 is a hollow circular tube structure. The coil 20 is all covered with the inner side of the inner sleeve 11, and the outer cylindrical surface of the coat 12 is opened between the outer cylinder and the inner cylindrical surface of the inner sleeve 11. The upper and lower ends of the body 12 are all opened along the axis of multiple ring grooves 14, and the ring -shaped groove 14 is connected to the outside world. The wall surface is coated with insulation coating and high temperature resistance, and the appearance area of ​​the coat 12 is 0.8 times the surface area of ​​the inner cover 11.

[0028] Please refer to the swelling state Figure 5 In the figure, the arrow r...

Embodiment 2

[0041] In another preferred embodiment, on the basis of the above embodiments, see the attachment Image 6 In the figure, the coil is omitted. Each ring -shaped groove 14 is set in the cooling water pipe 15 made of non -metallic materials, and the outer side of the cooling water pipe 15 in each ring groove 14 is set. The exterior area of ​​the coat 12 is 0.4 times the surface area of ​​the inner cover 11.

[0042] In this embodiment, cooling water pipe 15 and cooling trachea were set up in each ring -shaped groove 14. When swelling, the cooling water and air were opened in the cooling water pipe 15 and the cooling trachea 16, respectively. Cooling and cooling make the magnetic body 10 maintain a sustainable temperature state, preventing the magnetic collector from being damaged by high temperature.

Embodiment 3

[0044] In another preferred embodiment, see the attachment Figure 7In the multi -tract -shaped groove 14 of the coat body 12, one of the ring -shaped grooves 14 is set up in a cooling water pipe 15, and the cooler tracheal 16 is set in the ring groove with the cooling water pipe 15, that is, the cooling water pipe 15 and the cooling trachea 16 In the interval settings in different ring grooves 14, the appearance area of ​​the coat 12 is 0.9 times the surface area of ​​the inner cover 11.

[0045] In this embodiment, cooling water pipe 15 and cooling trachea 16 are set up in different ring -shaped grooves 14 to separate water cooling and air cooling to facilitate the layout of the water cooling system and the air -cooled system to avoid the interference of different cooling systems. Due to the setting of the set, due to the set, due to the collection, due to the collection, due to the setting of the set. The magnetic device is small, and the separation layout can simplify the struc...

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Abstract

The invention relates to the technical field of magnetic collectors, in particular to a magnetic collector for electromagnetic bulging, which comprises a magnetic collector body and coils, the magnetic collector body comprises an inner sleeve body and an outer sleeve body connected to the outer side of the inner sleeve body, the inner sleeve body is of a hollow structure, and the coils are uniformly distributed on the inner side of the inner sleeve body. A cutting groove is formed between the outer cylindrical face of the outer sleeve body and the inner cylindrical face of the inner sleeve body, and a plurality of annular grooves communicated with the outside are formed in the upper end and the lower end of the outer sleeve body in the axial direction. The induction eddy current of a traditional magnetic collector is analyzed, the skin depth of the current is combined, the enough thickness is reserved after the annular groove is formed so as to guarantee the flowing of the eddy current and the structural strength of the magnetic collector, the annular groove is formed in the useless part of the magnetic collector, the mass of the magnetic collector is reduced, the utilization rate of materials is improved, and redundant ohmic loss is reduced.

Description

Technical field [0001] The present invention involves the field of bloating -shaped magnetic technology, and especially involves an electromagnetic bloating -shaped magnetic collector. Background technique [0002] At present, lightweight alloys are widely used in pipelines, automobiles, aerospace and other fields to meet the needs of these industries for lightweight. Electromagnetic Forming (EMF) technology is very suitable Therefore, it has been developed rapidly; the magnetic auxiliary tool is a common auxiliary tool in the process of electromagnetic forming, which has the effect of improving magnetic field positions and improving the quality of forming. The shape of the magnetic part is a trapezoidal structure on the vertical section. The shape of this sectional shape along the vertical center axis is formed by a certain angle. figure 1 Show; its key structural design shows the bottom surface and slit. The general implementation method is to place the coil on the inner space ...

Claims

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Application Information

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IPC IPC(8): B21D26/14
CPCB21D26/14
Inventor 熊奇李青山赵翔高顿李哲习凌然
Owner CHINA THREE GORGES UNIV