Wire and arc additive manufacture forming method and device based on laser stabilization and regulation mechanism

Abstract

The invention belongs to the field of technologies related to additive manufacturing, and discloses a wire and arc additive manufacture forming method based on a laser stabilization and regulation mechanism. The method comprises the steps that when electric arcs are adopted as a heat source to melt a wire, stable laser excitation is applied to arc columns of the electric arcs, and the defocusing amount from laser spots to central axes of the arc columns is within + / - 0.5 mm; through the manner, metal components in the arc columns are gasified and ionized under the direction action of laser, a lot of charged particles are formed, and stability of the electric arcs is improved; and besides, neutral particles in the arc columns are ionized into plasmas, a compression phenomenon occurs, the diameter of the electric arcs is decreased, and surface shaping precision of the metal components is improved. The invention further discloses a corresponding shaping device. Through the adoption of the device, surface precision and product quality of the various finally obtained metal components can be remarkably improved, and the device has the characteristics of compact structure, convenient control, high adaptability and high operation efficiency.

Description

technical field [0001] The invention belongs to the technical field related to additive manufacturing, and more specifically relates to an arc additive manufacturing forming method and device based on a laser stabilization and regulation mechanism. Background technique [0002] The so-called Wire and Arc Additive Manufacture (WAAM) technology is a technology that utilizes the principle of layer-by-layer cladding, uses arc as a heat source to melt wire, and gradually forms metal from wire-surface-body according to the three-dimensional digital model. Advanced digital manufacturing technology for parts. Because WAAM technology has the characteristics of high deposition efficiency, high wire utilization rate, short overall manufacturing cycle, low cost, and less restrictions on the size of parts, it is widely used in the additive manufacturing process of various high-performance large metal components. [0003] WAAM technology usually uses metal wire to ignite the arc, uses th...

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Problems solved by technology

[0003] WAAM technology usually uses metal wire to ignite the arc, uses the arc heat to melt the metal wire, and accumulates the required metal components according to the specified path. However, further research has found that in the actual operation of arc additive manufacturing , the phenomenon of arc instability is common, and may deteriorate the final forming accuracy; on the other hand, due to the large heating area of ​​the arc column, the flatness of the surface of the formed metal component is also relatively large (generally within ±1.5mm left and right), so metal components usually need to be machined after arc deposition forming, which not only reduces production efficiency, but also easily adversely affects the final forming accuracy

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