Infrared information-based metal additive manufacturing process control apparatus and method

A metal additive and manufacturing process technology, applied in the field of metal additive manufacturing process control devices based on infrared information, can solve problems such as the lack of a feedback link for welding parameters, and achieve intuitive geometry and temperature field distribution, and real-time inspection processes. , The effect of preventing product scrap

Pending Publication Date: 2017-02-15
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

However, the system and method disclosed in the patent document CN104741802A are mainly aimed at the process detection of laser welding, and the acquisition device used is a high-priced thermal imager, and the function of the system is mainly biased towards monitoring, lacking the welding parameter feedback link

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  • Infrared information-based metal additive manufacturing process control apparatus and method
  • Infrared information-based metal additive manufacturing process control apparatus and method

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[0040] 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.

[0041]figure 1 It is a schematic diagram of an infrared information-based metal additive manufacturing process control device according to an embodiment of the present invention. like figure 1 As shown, the system includes: an infrared acquisition device 1, a protective case 2, a radiator 3, an auxiliary power supply 4, an image acquisition card 5, a fixing mechanism 6, a data bus 7, a display ...

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Abstract

The invention discloses an infrared information-based metal additive manufacturing process control apparatus. The apparatus comprises: an additive manufacturing operating unit used for manufacturing a metal workpiece; an infrared image information acquisition unit comprising an infrared acquisition device (1) and used for acquiring infrared temperature field images of a melting bath of the workpiece and the circumference of the melting bath in real time; an image processing unit (9) connected with the infrared image information acquisition unit through a data bus (7) and used for processing the infrared temperature field images and generating a feedback instrument; and a feedback control unit (10) used for controlling the additive manufacturing operating unit to adjust parameters in order to eliminate defect or alarm shutdown. The invention also discloses a control method applying the apparatus. The apparatus can realize real-time quality detection of the whole metal additive manufacturing process, and can timely adopt measures to inhibit defect expansion or timely stop operation in order to prevent product discard or repairing after completion.

Description

technical field [0001] The invention belongs to the field of infrared detection and process control of metal additive manufacturing, and more particularly relates to a process control device and method for metal additive manufacturing based on infrared information. Background technique [0002] Metal additive manufacturing technology can process some products that are difficult to complete by conventional metal processing methods, and the production cycle is short and the efficiency is high. Nowadays, the field of metal additive manufacturing is more mature and applied in industrial production, mainly using laser or electron beam as heat source to melt and sinter metal powder or wire. Such as selective laser sintering (SLS), direct laser sintering (DMLS), laser surfacing (SLM) and electron beam melting (EMB). This type of metal additive manufacturing technology can quickly produce high-quality, high-precision products, and has begun to be used in industrial fields such as a...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/88G01N21/35G01J5/00
CPCG01J5/00G01N21/35G01N21/8851
Inventor 夏卫生万柴志夏盼盼田文扬刘凯
Owner HUAZHONG UNIV OF SCI & TECH
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