Nondestructive on-line quality inspection equipment and method applicable to powder spreading type additive manufacturing

Abstract

The invention discloses nondestructive on-line quality inspection equipment and method applicable to powder spreading type additive manufacturing and belongs to the field of nondestructive inspection.A forming assembly of the equipment is provided with a power spreading quality inspection module, a constituent inspection module, a defect inspection module, a deformation inspection module, a stress inspection module and a dimensional precision inspection module. All the modules can work separately and simultaneously; and the nondestructive on-line quality inspection equipment is high in use flexibility. By means of the equipment, comprehensive integrated inspection is conducted on powder spreading quality, component constituents, defects, deformation, the stress and dimensional precision in the powder spreading type additive manufacturing and forming process; powerful guarantee can be provided for the forming process of metal components of different materials, dimensions and structuresand in different shapes, and thus the excellent-quality metal components are manufactured one time efficiently; the yield can be increased to a certain extent; and economic losses are reduced. The nondestructive on-line quality inspection equipment and method can be widely applied to manufacturing of various types of powder spreading type additives of heat sources utilizing laser, electron beams,plasmas and the like.

Description

technical field [0001] The invention belongs to the field of non-destructive on-line detection, and specifically relates to a non-destructive on-line detection method and equipment suitable for the quality of powder coating and components, defects, deformation, stress, and dimensional accuracy of parts in the powder-spraying additive manufacturing process. Background technique [0002] Powder-spreading additive manufacturing is an advanced manufacturing technology based on powder bed laying. It is based on the principle of "discrete-stacking". Layers of metallic, non-metallic or composite powder are selectively melted or sintered to form the final part. Due to the advantages of no need for molds, no restrictions on the complexity of parts, and one-time net shape, it is widely used in aerospace, aviation, medical and other important fields. [0003] In simple terms, powder-coated additive manufacturing is divided into two processes: the powder-coating process and the melting...

AI Technical Summary

Problems solved by technology

However, the above-mentioned online detection method has a single detection object, and only detects the local process in the powder-spreading additive manufacturing process, and it is difficult to guarantee the quality of the parts in all aspects.

[0007] To sum up, among the existing detection methods for powder-spraying additive manufacturing technology, although offline detection can accurately detect the problems existing in parts, the detection effect is lagging and cannot improve the yield of parts

Although the online detection method can detect and intervene in the problems generated during the processing process, the detection object is single, and it cannot monitor the quality of the parts quickly, efficiently and comprehensively.

Additive manufacturing of large-sized parts usually takes tens or even hundreds of hours. If the defects in the manufacturing process cannot be detected in time and given early warning and control, it may lead to the failure of the forming of the parts and cause great waste.

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