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A synchronous monitoring system for laser additive manufacturing

A monitoring system and additive manufacturing technology, which is applied in the field of laser additive manufacturing synchronous monitoring system, can solve the problems that the molten pool morphology and melting process cannot be observed, the structure of the detection device is complicated, and it is difficult to detect accurately, etc., to achieve Good commercialization prospects, high scientific research value, simple structure effect

Active Publication Date: 2022-03-11
瑞吉仿生智造技术(杭州)有限公司
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  • Claims
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Problems solved by technology

When monitoring the thickness of the cladding layer, it is difficult to accurately detect the thickness of the cladding layer because the thickness of the cladding layer is thin, and the structure of the detection device is too complicated, which has great restrictions on the geometry of the molded part and the laser scanning method
For the powder of a certain material, when the laser power reaches a certain value, the molten metal in the molten pool has reached thermal saturation, the increase of the temperature of the molten pool is not obvious, and effective feedback cannot be obtained by monitoring the temperature of the molten pool
Infrared thermal imaging can only detect the distribution of the heat-affected zone of the molten pool at different surface temperatures, and cannot observe the morphology of the molten pool and the melting process

Method used

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  • A synchronous monitoring system for laser additive manufacturing
  • A synchronous monitoring system for laser additive manufacturing
  • A synchronous monitoring system for laser additive manufacturing

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Embodiment 1

[0032] The technical parameter of the part that the present invention adopts is as follows:

[0033] The technical parameters of the high-speed camera device are: CMOS sensor, the trigger mode is manual, continuous, synchronous, and pulse, the operating environment is WindowsXP / 7 / 10, the resolution is 800×600-1280×1024, and the camera frequency is 5000 frames / s-100000 frames / s, the exposure time is continuously adjustable within the range of 1μs-24ms, the zoom can reach 1x-160x, auto focus, accessory lens, image acquisition card, professional driver software, etc.;

[0034] The filter is a band-pass filter with a wavelength of 632.8nm and a half-bandwidth of 10nm; a red filter is optional for the colored filter;

[0035] The backlight source laser 8 is a helium-neon laser, the model is 25LHP928-230, the wavelength is 632.8nm, and the rated power is 35MW;

[0036] The power of the 3D printer laser transmitter 6 is 2000W-15000W;

[0037] The 3D printer model is LDM8060 powder...

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Abstract

The invention discloses a synchronous monitoring system for additive manufacturing, which includes a computer, a high-speed camera, a 3D printer laser emitter and a photoelectric sensor; wherein, the high-speed camera mounting bracket is installed on one side of the 3D printer laser emitter, and the photoelectric sensor and After the high-speed camera is connected, it is fixed on the laser transmitter of the 3D printer; the manipulator is installed on the inner wall of the 3D printer box, and the workbench is placed directly under the laser transmitter of the 3D printer. The initial position of the workbench is kept on the same level as the lens of the high-speed camera , the high-speed camera is connected with the computer. The monitoring system accurately monitors the additive manufacturing process, obtains the shadow topography image of the molten pool in real time, solves the problem that the current process cannot dynamically monitor the change of the molten pool throughout the process, and can capture devices and backlight sources in the monitoring system Reasonable matching to monitor the shape of the molten pool.

Description

technical field [0001] The invention relates to real-time monitoring of molten pool morphology during additive manufacturing, in particular to a synchronous monitoring system for additive manufacturing. Background technique [0002] Additive manufacturing technology is a manufacturing technology that accumulates special metal materials, non-metal materials, and medical biomaterials layer by layer through sintering, sintering, extrusion, spraying, etc. through software and numerical control systems to produce physical objects. At present, additive manufacturing technology has become one of the important methods for rapid and direct manufacturing of metal parts and green remanufacturing of failed metal parts, and has been widely used in various fields such as petroleum, automobiles, and aviation. [0003] Due to the deformation and cracking of parts during the laser forming process of metal components, the internal defects and internal quality of additive manufacturing technol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/105B33Y30/00B33Y50/02
CPCB22F3/003B33Y30/00B33Y50/02B22F10/00B22F10/25B22F12/90B22F12/222B22F10/30B22F10/28B22F12/224Y02P10/25
Inventor 张志辉王庆梁云虹周倜张鹏祖硕王熙于征磊任露泉
Owner 瑞吉仿生智造技术(杭州)有限公司
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