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Coil-free electromagnetic-pulse forming device and method of metal plates

A metal sheet and electromagnetic pulse technology, applied in the field of material plastic forming, can solve the problems of high cost of coil production, high conductivity, easy failure, etc., and achieve the effect of improving the forming limit, high service life and long service life.

Inactive Publication Date: 2016-07-06
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the above defects or improvement needs of the prior art, the present invention provides a coilless electromagnetic pulse forming device and method for metal plates. A coilless electromagnetic pulse forming device and method for metal sheets, thereby solving technical problems such as high coil manufacturing cost, easy failure, and restrictions on the high conductivity of the material to be formed in the existing electromagnetic pulse forming process

Method used

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  • Coil-free electromagnetic-pulse forming device and method of metal plates
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  • Coil-free electromagnetic-pulse forming device and method of metal plates

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Effect test

Embodiment 1

[0040] like figure 2 Shown is the coilless electromagnetic pulse forming device for metal sheets of the present invention, including a die 1, a pressing plate 3, an induction plate 4, and a power supply system 6; the pressing plate 3 presses the plate 2 on the die 1, and the induction plate 4 is arranged on The press plate 3 is located directly below the plate 2 to be formed, and its shape can be a cylinder, a truncated cone, a hexahedron or an irregular shape; the power supply system 6 includes parallel power supplies, energy storage capacitors, voltage dividing resistors and switches; the power supply system 6 and the The forming plates 2 are directly connected; both the pressing plate 3 and the die 1 are made of insulating materials. When the concave mold is made of metal material, an insulating material must be laid between the plate to be formed and the mold.

[0041] The specific process of forming by using the above-mentioned coilless electromagnetic pulse forming dev...

Embodiment 2

[0043] like Figure 4a The shown coilless electromagnetic pulse forming device for metal sheets is different from the device in Embodiment 1 in that there are two induction plates in the pressing plate, namely induction plate 4-1 and induction plate 4-2. Both induction plates are located on the same side of the plate 2 to be formed. The power supply system 6 includes a parallel power supply, energy storage capacitors, voltage divider resistors and switches; the power supply system 6 is directly connected to the plate to be formed 2-1; the pressing plate 3-1 and the die 1-1 are made of insulating materials. When the concave mold is made of metal materials, insulating materials must be laid on the contact between the plate to be formed and the contact.

[0044] The specific process of adopting the forming device of the above-mentioned metal plate without coil electromagnetic pulse forming device includes: placing the plate to be formed 2-1 between the pressing plate 3-1 and the...

Embodiment 3

[0046] like Figure 4b The shown coilless electromagnetic pulse forming device for metal sheets differs from the device in Embodiment 2 in that the induction plate 4-3 and the induction plate 4-4 in the pressing plate are respectively located on both sides of the sheet to be formed 2-2. The power supply system 6 includes a parallel power supply, energy storage capacitors, voltage dividing resistors and switches; the power supply system 6 is directly connected to the plate to be formed 2-2; the die press plate assembly 1-2 and the die press plate assembly 3-2 are both The concave mold acts as a pressing plate again, and is made of insulating materials. When the part of the die is assembled with metal materials, insulating materials must be laid at the contact between the plate to be formed and the die.

[0047] The specific process of adopting the above-mentioned sheet metal forming device without coil electromagnetic pulse forming includes: placing the plate to be formed 2-2 ...

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Abstract

The invention provides a coil-free electromagnetic-pulse forming device and method of metal plates. The device comprises a female die, a sensing plate, a pressing plate and a power supply system. The method includes: placing a to-be-formed metal plate between the female die and a high-conductivity sensing plate; by the power supply system, directly applying pulse currents to the to-be-formed plate to generate an electromagnetic field, allowing the sensing plate close to the to-be-formed metal plate to generate reverse sensing currents to generate an electromagnetic field, and achieving plate formation by the pulse repulsion electromagnetic force effect, generated by the electromagnetic fields, on the to-be-formed plate. The coil-free electromagnetic-pulse forming device and method has the advantages that a winding type discharge coil structure required by traditional electromagnetic formation is not used, low-conductivity materials can be formed directly, a high-conductivity drive plate is not needed, and device cost can be lowered; the device is simple in structure, long in service life, capable of achieving cold formation of high-strength materials, and the like.

Description

technical field [0001] The invention belongs to the field of plastic forming of materials, in particular to electromagnetic pulse forming of metal plates, and in particular to a coilless electromagnetic pulse forming method and device. Background technique [0002] Electromagnetic pulse forming technology can improve the material forming limit, and has the characteristics of easy and precise control, fast forming speed, high precision of formed workpiece, simple mold structure and strong versatility of equipment. It has been widely used in many fields such as machinery, electronics, automobile industry, light chemical industry, instrumentation, aerospace, weapon industry, etc., with broad application prospects. [0003] In the traditional electromagnetic pulse forming process, the coil is a key component that converts electrical energy into magnetic field energy. The structure of the discharge coil determines the distribution of the spatial magnetic field and the magnetic f...

Claims

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Application Information

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IPC IPC(8): B21D26/14
CPCB21D26/14
Inventor 莫健华方进秀周波
Owner HUAZHONG UNIV OF SCI & TECH
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