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An electromagnetic forming device and a method for preparing fiber-reinforced metal matrix composites using the device

A fiber-reinforced and composite material technology is applied in the field of electromagnetic forming devices and the preparation of fiber-reinforced metal matrix composite materials by using the device, which can solve the problems of long-term pressure holding, low process and equipment costs, and low production efficiency by the hot-pressing method. , to achieve the effect of being suitable for mass production, slowing down the formation of interfacial brittle phases, and improving production efficiency

Inactive Publication Date: 2019-01-22
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an electromagnetic forming device and a method for preparing fiber-reinforced metal matrix composites by using the device to solve the above-mentioned shortcomings in the prior art. The device is simple, and the forming time of the device is extremely short (up to 10 -5 second level), which solves the problem of long-time pressure holding and low production efficiency in the hot pressing method. In addition, due to the short contact time between the molten metal and the fiber material, the problem of interface reaction in the die-casting method is alleviated, and the method only requires Electromagnetic forming equipment and heating furnace, the cost of process and equipment is lower than that of vacuum pressure infiltration method

Method used

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  • An electromagnetic forming device and a method for preparing fiber-reinforced metal matrix composites using the device
  • An electromagnetic forming device and a method for preparing fiber-reinforced metal matrix composites using the device
  • An electromagnetic forming device and a method for preparing fiber-reinforced metal matrix composites using the device

Examples

Experimental program
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Effect test

Embodiment 1

[0043] Such as figure 1 , 2 Shown is an electromagnetic pulse forming device for fiber-reinforced metal matrix composites in this embodiment. The electromagnetic forming device includes a lower platen 7, a coil charging and discharging device, a coil fixing device, a crucible 10, a crucible positioning device, a die 13 and a die fastening device. The lower pressing plate 7 is provided with a cylindrical groove. The coil charging and discharging device includes a discharge coil 9, a capacitor 18 connected in series with the discharge coil 9, and a power supply connected in parallel with the capacitor 18, wherein the power supply is connected in series with the charging control switch 19, and the discharge coil 9 is connected in series with the discharge control switch 17. The coil fixing device includes a concentric coil frame 8 with a cylindrical groove and a coil base 6, the discharge coil 9 is embedded and fixed in the groove of the coil frame 8, and the coil frame 8 is em...

Embodiment 2

[0049] Such as image 3 Shown is an electromagnetic pulse forming device for fiber-reinforced metal matrix composites in this embodiment. The electromagnetic forming device includes a lower platen 7, a coil charging and discharging device, a coil fixing device, a crucible 10, a crucible positioning device, a die 13 and a die fastening device. The lower pressing plate 7 is provided with a cylindrical groove. The coil charging and discharging device includes a discharge coil 9, a capacitor 18 connected in series with the discharge coil 9, and a power supply connected in parallel with the capacitor 18, wherein the power supply is connected in series with the charging control switch 19, and the discharge coil 9 is connected in series with the discharge control switch 17. The coil fixing device includes a concentric coil frame 8 with a cylindrical groove and a coil base 6, the discharge coil 9 is embedded and fixed in the groove of the coil frame 8, and the coil frame 8 is embedde...

Embodiment 3

[0056] This example uses the same device as Example 1 to prepare fiber-reinforced metal matrix composites. The undisclosed technical features are the same as Example 1, except that the discharge capacitance in step 2) is 12300 μF, the discharge voltage is 640V, and the discharge energy It is 2.52kJ. The distance between the bottom of the crucible 10 and the discharge coil 9 is 3 mm. The photo of the composite material formed part obtained in this embodiment is as follows Figure 6 As shown, its thickness is 0.5mm.

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Abstract

The invention relates to an electromagnetic forming device and a method for preparing a fiber reinforced metal base composite material by using the device. The electromagnetic forming device comprises a lower pressing plate (7), a coil charge / discharge device, a coil fixing device, a crucible (10), a crucible positioning device, a concave mold (13) and a concave mold fastening device; the crucible positioning device includes a crucible fixed plate (5) for supporting the crucible (10); the crucible fixed plate (5) is provided with an inner hole; the edge of the inner hole is matched with the outer side of the crucible (10); the crucible positioning device is used for controlling the mounting height of the crucible, so that a gap from the bottom of the crucible (10) to a discharge coil (9) is 1-3 mm; the concave mold (13) is semi-cylindrical, and is downwards opened; the lower edge of the concave mold (13) and the upper edge of the crucible (10) can be buckled to form closed space; and the concave mold fastening device is used for fixing the concave mold (13) and applying pressure to the concave mold (13), so that the concave mold (13) is tightly buckled with the crucible (10).

Description

technical field [0001] The invention belongs to the technical field of metal-matrix composite material processing and molding, and in particular relates to an electromagnetic forming device and a method for preparing fiber-reinforced metal-matrix composite materials using the device. Background technique [0002] In addition to the characteristics of high specific strength, high specific modulus and low thermal expansion coefficient, fiber-reinforced metal matrix composites also have higher temperature resistance, flame resistance, high transverse strength and stiffness, no moisture absorption, high thermal conductivity and electrical conductivity. The advantages of good radiation resistance and no gas emission during use show the incomparable characteristics of resin-based composite materials, and have been highly valued by researchers at home and abroad. [0003] The metals currently used to prepare fiber-reinforced metal matrix composites include aluminum, copper, titaniu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C47/08
CPCC22C47/08
Inventor 胡建华刘运展黄尚宇孙世民王斌胡明志
Owner WUHAN UNIV OF TECH
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