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Micro-channel plate with dual performance and composite forming process and equipment thereof

A compound forming and micro-channel technology, which is applied to the improvement of process efficiency, sheet/plate, additive processing, etc., can solve the problems of coarse microstructure, low precision of parts, poor surface quality, etc., and achieve the improvement of coarse microstructure, Effect of suppressing grain growth and improving molding efficiency

Active Publication Date: 2022-03-18
HUAZHONG UNIV OF SCI & TECH
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  • Description
  • Claims
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Problems solved by technology

Although composite microchannel parts can be directly formed by selective laser melting technology, the parts formed by this method have the defects of coarse microstructure, low part precision, poor surface quality and high porosity.

Method used

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  • Micro-channel plate with dual performance and composite forming process and equipment thereof
  • Micro-channel plate with dual performance and composite forming process and equipment thereof
  • Micro-channel plate with dual performance and composite forming process and equipment thereof

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0028] see figure 1 and figure 2 , the composite forming process of the micro-channel plate with dual properties provided by the present invention first forms a composite material slab by selective laser melting, and then adopts the method of electric pulse-assisted micro-rolling to form the micro-channel structure. The manufacturing method mainly includes the following steps:

[0029] Step ...

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Abstract

The invention belongs to the related technical field of composite material micro-forming, and discloses a micro-channel plate with double properties and a composite forming process and equipment thereof, and the composite forming process comprises the following steps: (1) uniformly laying a layer of A powder, and carrying out selective laser melting on a preset area of the formed A powder layer for forming; (2) a layer of B powder continues to be evenly laid, selective laser melting is conducted on the formed B powder layer for forming, then printing of a layer of composite material is completed, and a composite material layer is obtained; (3) repeating the step (1) and the step (2), and carrying out layer-by-layer stacking forming to obtain a composite material plate blank; and (4) the composite material plate blank is subjected to micro-rolling forming under the assistance of pulse current to obtain a micro-channel structure, and then the dual-performance micro-channel plate is obtained. According to the method, the corrosion resistance, the heat conductivity and the strength of the micro-channel plate are improved, and the forming quality is improved through the process of combining selective laser melting and electric pulse auxiliary micro rolling.

Description

technical field [0001] The invention belongs to the technical field related to micro-forming of composite materials, and more specifically relates to a dual-performance micro-channel plate and its composite forming process and equipment. Background technique [0002] The micro-channel structure on the surface of the plate can improve the heat transfer effect, increase the reaction area, and reduce friction and drag. It has been widely used in heat transfer systems, microreactors, and fuel cell bipolar plates. The current micro-channel structure is usually formed with a single material, and the use of composite materials to form micro-channel structure parts can further improve the service performance of the part. [0003] Among them, selective laser melting technology (English is "selective laser melting", also known as: SLM selective laser melting technology) involves a forming method in which a (metallic) powder material is melted by means of a laser Remelts on defined si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F10/28B22F12/00B33Y10/00B33Y30/00B33Y80/00F16S1/12B22F5/00B22F7/02
CPCB22F10/28B22F5/00B22F12/00F16S1/12B33Y10/00B33Y30/00B33Y80/00B22F7/02Y02P10/25
Inventor 邓磊张海栋王新云金俊松李成龚攀张茂唐学峰
Owner HUAZHONG UNIV OF SCI & TECH
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