Material increase manufacturing method based on high-speed spray forming of multi-material particles

An additive manufacturing and high-speed jetting technology, applied in the field of additive manufacturing, can solve problems such as three-dimensional solid parts, strength and precision research of manufactured parts, and additive manufacturing of multi-material composite structural parts that have not yet been carried out, so as to eliminate boundaries. The effect of the loss phenomenon

Inactive Publication Date: 2014-01-22
XI AN JIAOTONG UNIV
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Problems solved by technology

However, most of the current research focuses on the surface material, microstructure, and performance of the cold spraying process, focusing on the properties of the coating material, the microstructure of the interface layer, the bonding mechanism, and the strength of the coating. Research on the spra

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  • Material increase manufacturing method based on high-speed spray forming of multi-material particles
  • Material increase manufacturing method based on high-speed spray forming of multi-material particles

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Embodiment 1

[0040] see figure 1 , Figure 2-2 , diagram 2-1 , high-speed spray forming to prepare rapid prototyping parts with complex structures of copper and titanium particles, including the following steps:

[0041] 1. According to theoretical calculation and structural design, use Pro / E to complete the 3D modeling of the part and save it in STL file format;

[0042] 2. Uniformly seal the CAD model, obtain the information of the layered section material of the model, and write the motion program of the spray gun and the platform;

[0043] 3. Load 20um spherical copper particles and titanium particles into the screw powder feeder respectively, adjust the conveying efficiency, and control the powder feeding rate at 5kg / h;

[0044] 4. In order to improve the efficiency of particle acceleration and save costs, use a mixed gas of nitrogen and helium with a mass fraction of He of 10%, transport the gas from the powder feeder, and use two heaters to preheat the temperature of the working...

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Abstract

The invention discloses a material increase manufacturing method based on high-speed spray forming of multi-material particles. According to the method, metal and ceramic particles are carried by means of certain compressed air and impact a substrate at a high speed after speeding up through a spray gun. When the speed of the particles exceeds a clinical depositing speed, the particles effectively deposit on the substrate or on the deposited and formed particles through mechanical impact. In the spraying forming process of the particles, the material particles do not melt, and accordingly selection of materials is not limited by melting points, and synchronous spray forming manufacturing of various materials can be achieved. A spray forming part has high compactness and can achieve unique mechanical, physical and chemical performance. Material increase manufacturing of three-dimensional functional parts which have complex space structures, controllable material distribution and micro structures is achieved through a multi-freedom-degree spray device. The process is simple, environmentally-friendly, low in energy consumption, strong in operability and capable of solving the difficult problem that multi-material functional parts with composite structures cannot be manufactured through a traditional quick forming process.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing and relates to an additive manufacturing method based on high-speed spray forming of multi-material particles. Background technique [0002] The rapid development of additive manufacturing technology has become the key technology of the "third industrial revolution", and it is developing towards the integrated rapid manufacturing of multi-functional multi-material complex structural parts. In particular, the additive manufacturing of functional parts with complex structures made of metals and ceramics as raw materials has been widely used in aerospace, medical equipment, automotive industries and other fields. At present, the additive manufacturing technologies of metal or ceramic powder or wire mainly include laser selective sintering, laser cladding, electron beam forming, etc. They are based on the basic principle of melting and solidification, and are restricted by the melting ...

Claims

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Application Information

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IPC IPC(8): B22F3/115B28B1/24
Inventor 田小永曹家赫李涤尘
Owner XI AN JIAOTONG UNIV
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