LPBF additive manufacturing device and method with in-situ monitoring function

An additive manufacturing, in-situ technology, applied in the field of LPBF additive manufacturing devices, can solve problems such as poor stability and insufficient repeatability, and achieve the effects of strong applicability, shortened development cycle, and strong real-time performance.

Pending Publication Date: 2022-03-25
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shortcomings of insufficient repeatability and poor stability of LPBF technology hinder the further development and application of this technology. How to improve the stability and quality of manufactured parts has always been a hot research issue in this field.

Method used

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  • LPBF additive manufacturing device and method with in-situ monitoring function
  • LPBF additive manufacturing device and method with in-situ monitoring function
  • LPBF additive manufacturing device and method with in-situ monitoring function

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Embodiment Construction

[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0026] In describing the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or positional relationship. Elements must hav...

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Abstract

The invention relates to an LPBF additive manufacturing device and method with an in-situ monitoring function, the manufacturing device comprises a powder conveying system, the powder conveying system is located in a vacuum environment, and a powder material F is spread in the powder conveying system and gradually forms a micro powder bed; the laser system is located at the top of the micro powder bed and emits laser impact; x-rays emitted by the X-ray source irradiate the micro powder bed from one side; the X-ray imaging system and the X-ray source are oppositely arranged, and the X-ray imaging system is used for receiving X-rays synchronous with powder material diffusion in the powder material diffusion process, imaging and conducting on-site X-ray imaging analysis on powder diffusion in real time. According to the method, in-situ monitoring is achieved, real-time performance is achieved, applicability is high, defects can be recognized as early as possible, therefore, the rejection rate and post-treatment procedures are reduced, the development period is shortened, and possibility is created for providing whole-course traceable machining information. And the problems of insufficient stability and repeatability of the selective laser melting process are effectively solved.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, and more specifically relates to an LPBF additive manufacturing device and method with an in-situ monitoring function. Background technique [0002] Laser powder bed fusion (LPBF) technology is an advanced manufacturing technology that is developing rapidly in the field of metal additive manufacturing, and has been widely used in aerospace, automobile manufacturing, biomedical and other industries. The technology enables the direct fabrication of complex shapes and lightweight structures not possible with conventional manufacturing processes. However, the shortcomings of insufficient repeatability and poor stability of LPBF technology hinder the further development and application of this technology. How to improve the stability and quality of manufactured parts has always been a hot research issue in this field. [0003] It is well known that the quality of the powder bed is one ...

Claims

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Application Information

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IPC IPC(8): B22F12/90B22F10/28B22F10/85B22F10/32G01N23/04B33Y50/02
CPCB22F12/90B22F10/28B22F10/85B22F10/32G01N23/04B33Y50/02Y02P10/25
Inventor 郭伟王优李怀学
Owner BEIHANG UNIV
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