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Transparent droplet strengthened composite additive manufacturing method

An additive manufacturing and transparent liquid technology, applied in the field of additive manufacturing, can solve the problems of difficult to solve the problem of residual and laying of the constraining layer, and achieve the effect of small size, high universality, and easy manipulation.

Active Publication Date: 2021-09-03
WUHAN UNIV
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AI Technical Summary

Problems solved by technology

In the continuous additive manufacturing process of layer-by-layer accumulation, it is difficult to solve the problem of residue and laying of conventional constrained layers

Method used

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  • Transparent droplet strengthened composite additive manufacturing method
  • Transparent droplet strengthened composite additive manufacturing method

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Embodiment 1

[0024] see figure 1 , the transparent droplet reinforced composite additive manufacturing method of the present invention, the specific steps are as follows:

[0025] (1) Additive manufacturing and temperature laser shock parameter setting. In this example, if figure 1 As shown, the energy of the pulsed laser 1 is 1J, the power of the continuous laser 4 is 700W, the spot diameter of the continuous laser beam is 1mm, the spot diameter of the pulsed laser beam is 1mm, the scanning speed is 4mm / s, and the pulse laser frequency is 5Hz. The thickness of the powder bed 5 is 30 μm, the powder is selected as CoCrFeNi high-entropy alloy, and the base material 6 is 316 stainless steel.

[0026] (2) Setting the initial position and laying frequency of the liquid confinement layer; determine the initial action position of the pulse laser 1 according to the pulse laser indicator light, determine the exit position of the mobile droplet constrained layer generation device 2 according to th...

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Abstract

The invention discloses a transparent droplet strengthened composite additive manufacturing method. The method is mainly characterized in that a laser shock system and a transparent droplet instillation system are additionally arranged in traditional additive manufacturing equipment. High-flexibility and residue-free transparent droplets serve as a restraint layer, and synchronous laser shock strengthening based on the high-flexibility restraint layer is achieved in additive manufacturing. According to the method, high-flexibility, non-contact, residue-free and accurate laying of the restraint layer in the warm laser shock and laser additive composite manufacturing process can be achieved, the laser shock strengthening effect is effectively improved, the compactness and mechanical property of a deposition layer are improved, and the method is suitable for the composite manufacturing field of other advanced manufacturing processes such as laser shock and additive manufacturing and welding.

Description

technical field [0001] The invention relates to the field of additive manufacturing, in particular to a transparent droplet reinforced composite additive manufacturing method. Background technique [0002] Additive manufacturing, also known as 3D printing, is an emerging rapid prototyping technology in recent years. The basic principle is to directly manufacture high-performance metal parts by "manufacturing layer by layer and superimposing layer by layer" on raw materials based on CAD model data. Along with the Fit iteration of lasers, additive manufacturing technology has also begun to enter a stage of rapid development. The rise of additive technology is considered to be "an important symbol of the third industrial revolution", which is of milestone significance for the generation and development of innovative technologies in the future. [0003] Compared with traditional manufacturing technology, although additive manufacturing technology can realize the direct forming ...

Claims

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Application Information

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IPC IPC(8): B22F10/50B22F10/28C21D10/00B22F12/43B33Y10/00
CPCB22F10/50B22F10/28C21D10/005B22F12/43B33Y10/00Y02P10/25
Inventor 胡耀武刘健张啸寒夏敏刘胜
Owner WUHAN UNIV
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