Wheel-disc-type multi-material selective laser melting molding device and method

Abstract

The invention discloses a wheel-disc-type multi-material selective laser melting molding device and a method. The wheel-disc-type multi-material selective laser melting molding device comprises a molding chamber, a powder supply device and the like, wherein the powder supply device is a rotatable wheel-disc-type powder cylinder and is of a cylindrical structure, partitions divide the interior of the wheel-disc-type powder cylinder into four equant powder cylinders, and the four powder cylinders can be used for holding powder of different materials; and when a rotating shaft of the wheel-disc-type powder cylinder rotates, the four powder cylinders are driven to alternate and to be aligned to a powder spreading station of the molding chamber, so that powder in the powder cylinder is spread onto the molding cylinder through the powder spreading mechanism. The four powder cylinders can hold powder of different materials, the flexibility is high, the structure is simple, the occupied space is small, the manufacturing cost is low, the molding requirement for processing various powder of a part is satisfied, and the molding efficiency and quality are greatly improved. As the molding chamber does not need to be opened for powder replacement during processing, the favorable metallurgical bonding performance of dissimilar materials of the part is greatly improved.

Description

Technical field [0001] The invention relates to the field of rapid prototyping of metal parts by laser selective melting and forming, in particular to a roulette type multi-material laser selective melting and forming device and method. Background technique [0002] Selective laser melting (SLM) forming technology is a kind of additive manufacturing technology and the latest development technology of rapid prototyping technology. This technology is based on the principle of layer-by-layer accumulation of discrete materials, and based on the 3D data of digital parts designed by 3D design software, using high-energy laser beams to melt the raw material powder point by point, line by line, and layer by layer to directly manufacture functional parts. Compared with metal additive manufacturing technologies such as electron beam selective melting and laser selective sintering, laser selective melting and forming technology has the characteristics of high molding accuracy, high density ...

AI Technical Summary

Problems solved by technology

[0003] Although laser selective melting technology has developed rapidly and has been widely used in industries, transportation, molds, aerospace, and medical fields, but at present, laser selective melting molding equipment can only choose one material each time, and can only shape a single material. Part products with high material properties, which cannot meet people's direct molding requirements for integrated parts of multiple materials, severely limit the application range of laser selective melting technology

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