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Electroplastic forming method and device for bulk metallic glass workpiece

A bulk metal, electroplastic technology, applied in metal processing equipment, forming tools, manufacturing tools, etc., can solve the problems of uneven mechanical properties, difficult processing of bulk metal glass, etc., to avoid crystallization and maintain unique properties , the effect of improving the plastic deformation ability

Active Publication Date: 2016-06-01
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the above defects or improvement needs of the prior art, the present invention provides a bulk metallic glass electroplastic forming device and method, the purpose of which is to perform electroplastic processing and forming by controlling the temperature conditions of the bulk metallic glass, thereby Solve the technical problems existing in the prior art that complex products of bulk metallic glass are difficult to process and have uneven mechanical properties

Method used

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  • Electroplastic forming method and device for bulk metallic glass workpiece
  • Electroplastic forming method and device for bulk metallic glass workpiece
  • Electroplastic forming method and device for bulk metallic glass workpiece

Examples

Experimental program
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Embodiment 1

[0032] Such as image 3 Said, this example uses Zr 55 Cu 30 Al 10 Ni 5 (Atomic percentage) Bending processing of bulk metallic glass rod blanks at 200°C is an example, and the specific steps are as follows:

[0033] Zr-based metallic glass is machined into a bulk metallic glass rod-shaped blank 1 with a uniform cross-section, and the bulk metallic glass rod-shaped blank 1 is placed between a first fixture 2A and a second fixture 2B made of oxygen-free copper , adjust the positions of the first fixture 2A and the second fixture 2B so that they fit and clamp the bulk metallic glass rod-shaped blank 1, so as to ensure that the first fixture 2A and the second fixture 2B are always in contact with the bulk metallic glass rod-shaped blank 1 during the molding process. Blank material 1 is in good contact;

[0034] Set the pulse current parameters. According to the volume of the bulk metallic glass blank, the pulse parameters are selected: the current size is 100-1000A / mm 2 , th...

Embodiment 2

[0041] Such as figure 2 As shown, a device for realizing electroplastic forming of bulk metallic glass includes a first clamp 2A, a second clamp 2B, a pulse current source 5, a first electrode clamp 3A, a second electrode clamp 3B, a temperature sensor 6, a temperature Controller 8 , displacement sensor 7 , actuator 9 and actuation controller 10 .

[0042] Wherein, the front of the first fixture 2A and the front of the second fixture 2B are always attached and clamped to the bulk metallic glass blank 1 placed between them, so as to fix the bulk metallic glass blank and transmit current; The back of the first clamp 2A is fixedly connected to the front of the first electrode clamp 3A, and the back of the first electrode clamp 3A is electrically connected to the positive pole of the pulse current source 5; the back of the second clamp 2B is connected to the second The front of the electrode clamp 3B is fixedly connected; the back of the second electrode clamp 3B is electrically...

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Abstract

The invention discloses an electroplastic forming method for block metallic glass. The method is used for processing and forming the block metallic glass, and comprises the steps that a block metallic glass blank with a uniform cross section is manufactured; the block metallic glass blank is fixed, and a pulse current source is connected to the two ends of the block metallic glass blank; pulse current parameters are set according to forming requirements of block metallic glass workpieces, and the pulse current source is turned on; after the block metallic glass blank is heated to a forming temperature under the action of a pulse current, mechanical forming force is applied to the block metallic glass blank; the pulse current source is turned off, the block metallic glass blank is cooled to an indoor temperature, and then the block metallic glass workpieces can be obtained. The invention further discloses a corresponding electroplastic forming device for the block metallic glass. The electroplastic forming method and device for the block metallic glass have the advantages that operation is easy and energy is saved, and are particularly suitable for making the block metallic glass workpieces with high requirements for shape complexity and performance.

Description

technical field [0001] The invention belongs to the technical field of bulk metallic glass manufacturing and molding, and in particular relates to an electroplastic forming device and method for preparing bulk metallic glass workpieces. Background technique [0002] Metallic glass (metallic glass) is also called amorphous alloy (amorphous alloy), non-crystalline metal (non-crystalline metal), vitrified metal (glassymetal), etc., because of its special structure of short-range order and long-range disorder in solid state. In many aspects, it has better performance than conventional polycrystalline alloys. In terms of application, the high strength, high corrosion resistance and excellent electromagnetic properties of bulk amorphous materials will present a wide range in industries such as machinery, chemical industry, electronics and biological engineering. application prospects. In the late 1980s and early 1990s, the Inoue research group at Tohoku University in Japan first ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D22/20B21D37/16
Inventor 谌祺韩小涛柳林李亮
Owner HUAZHONG UNIV OF SCI & TECH
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