Metal additive manufacturing quality on-line detection system

Abstract

The invention belongs to the related technical field of additive manufacturing and discloses a metal additive manufacturing quality on-line detection system. The metal additive manufacturing quality on-line detection system comprises an electric arc additive manufacturing module, a spectral collection head module, a collected light path adjusting and aligning module, a spectral collection and welding synchronous triggering module and the like, wherein the electric arc additive manufacturing module is used for executing electric arc additive manufacturing according to preset process parameters;the collected light path adjusting and aligning module performs moving adjustment in X, Y and Z three-axis directions on the spectral collection head module, and arc light of a welding electric arc plasma is collected and is transmitted to a spectrometer to perform analysis on the aspects of element burn loss amount and the like; and the spectral collection and welding synchronous triggering module is used for guaranteeing synchronous triggering of spectral analysis and electric arc additive manufacturing. The metal additive manufacturing quality on-line detection system can realize componenton-line detection in the metal additive manufacturing process precisely and can realize efficient synchronous on-line detection on electric arc additive manufacturing shape controlling and property controlling by a mode that the structure is compact and control is facilitated.

Description

technical field [0001] The invention belongs to the technical field related to additive manufacturing, and more specifically relates to an online quality detection system for metal additive manufacturing. Background technique [0002] Additive manufacturing technology, commonly known as 3D printing technology, is a new manufacturing technology that has developed rapidly in recent years. It has the characteristics of digital forming. It uses powder or wire to manufacture three-dimensional solid parts in a layer-by-layer manner. In terms of high-quality, high-performance near-net shape of complex metal components, it has significant technical advantages such as short manufacturing cycle, low cost, excellent component performance, and small follow-up processing. It has been successfully applied to large structural parts in the fields of aerospace, weapons, and shipbuilding. The manufacture shows broad prospects for industrial application. [0003] In the field of additive manu...

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Problems solved by technology

[0006] However, further studies have shown that although the above-mentioned existing solutions propose the use of spectral analysis of photoplasma to reflect the controllable online detection of the additive manufacturing process, there are still the following defects or deficiencies: First, the welding arc plasma Arc light contains a wealth of information. Spectral intensity and plasma temperature information are the most primary level of information obtained by spectral processing. None of the above-mentioned patents involves the use of spectral information for online analysis of element composition and element burning loss; secondly, spectral intensity and spectral fluctuations are greatly affected by the collection environment. The application fields of the above two patents are laser powder additive manufacturing (SLM, SLS and LCD), and continuous laser processing light sources are used. Under this condition, the laser light source Insignificant effect on spectral intensity and volatility

However, the arc additive manufacturing technology adopts the pulsed arc or variable polarity arc processing mode, and the periodic magnitude change of the current has a great influence on the spectral intensity. Therefore, the above two patent solutions are difficult to be effectively applied to the arc additive manufacturing field.

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