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Method for producing multiple material micro part

A manufacturing method and multi-material technology, applied in metal material coating process, superimposed layer plating, coating, etc., can solve the problem of multi-material tiny parts that cannot be formed with various complex material components, and achieve high efficiency The preparation and process are simple, and the effect of breaking through the bottleneck of manufacturing cost

Inactive Publication Date: 2010-01-13
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the inadequacy of the existing technology that cannot form multi-material micro-parts with various complex material components, the present invention provides a method for manufacturing multi-material micro-parts

Method used

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  • Method for producing multiple material micro part

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Embodiment 1

[0015] Example 1: Reference figure 1 , Forming Al-Li-Si multi-material kinematically loaded tiny components with wear resistance and fatigue crack propagation resistance. The workpiece is a 1×1×1cm cube, and part of it is a wear-resistant part. Since high-silicon aluminum alloy has excellent wear resistance and corrosion resistance, the material is selected as Al-18Si alloy; then the material gradually transitions to other parts of Al -3.8Li alloy, Al-3.8Li alloy is a low-density high-lithium alloy, which not only greatly reduces the weight of the component, but also has a good resistance to fatigue crack propagation, and can be used as a cyclic load-bearing component; firstly, according to the shape and Establish the digital model of the workpiece according to the distribution of materials, generate discrete files of the rapid deposition system according to the model, and combine the droplet deposition system to generate three-dimensional substrate motion trajectory data file...

Embodiment 2

[0016] Embodiment 2: refer to figure 1 , Al-Cu / SiC particle-reinforced metal-based multi-material micro-parts with gradient materials. Al-Cu alloys with different SiC volume fractions have different mechanical properties. For example, with the increase of SiC volume fraction, the elastic modulus E of Al-Cu alloys increases linearly, while the elongation δ decreases monotonously. Volume fraction changes can be made into multi-material tiny parts whose material properties change as required. The workpiece is a 1×1×1cm cube. Firstly, the digital model of the workpiece is established according to the shape of the workpiece and the distribution of materials, and the discrete file of the rapid deposition system is generated according to the model. Combined with the droplet deposition system, the three-dimensional substrate motion trajectory data file is generated. ; At the same time, formulate the data files of powder supply and droplet charging deflection deposition according to t...

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Abstract

The process of producing miniature part of multiple materials includes the following steps: smelting basic metal material in a crucible, setting multiple material powder in container, sealing vacuum cavity, starting the jet environment measuring and controlling system, jet controlling system and the molten drop / powder combining deposition controlling system, maintaining the jetting pressure of crucible in 40 KPa, applying charging voltage and deflection voltage, so as to form and deflect the molten drop flow; spraying the powder to the molten drop bath for mutual dissolving with the molten drop, and cooling the product in no-oxygen environment. The process can form miniature part of multiple materials in complicated material distribution at low cost.

Description

technical field [0001] The invention relates to a manufacturing method of a multi-material micro-part. Background technique [0002] Due to its unique physical and mechanical properties, high-performance multi-material micro-parts have broad application prospects and potential markets in the micro-structures of various aerospace vehicles, special parts of micro-aircraft, load-bearing parts of space power systems, and the nuclear industry. . The traditional preparation methods of metal multi-material parts mainly include vapor deposition method, coating method, laser cladding method, powder metallurgy method, self-propagating high-temperature combustion synthesis method, etc. The preparation of multi-material parts, such as the self-propagating high-temperature combustion synthesis method, requires molds, and the material composition is single, which cannot form complex parts such as tiny metal multi-material turbines with complex internal flow channels. In addition, becaus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C28/00C23C4/00C23C24/10
Inventor 齐乐华罗俊杨方黄华蒋小珊
Owner NORTHWESTERN POLYTECHNICAL UNIV