Plasma melt casting quick forming device and forming method

Abstract

The invention discloses a plasma melt casting quick forming device and a forming method. The device is composed of a monitoring system, a plasma beam processing system, and a printing platform. The plasma beam processing system is composed of a plasma generator, a printing distance adjustment apparatus, a gas supply apparatus, and a wire feeding apparatus which continuously feeds a to-be-processed wire material. The monitoring system comprises a position regulating controller, a temperature detection unit, a distance detection unit and a printing distance adjustment controller. A temperature regulating apparatus is composed of the temperature detection unit and the printing distance adjustment controller. The forming method includes the steps of: 1) obtaining a three-dimensional stereo model of a to-be-formed work piece and performing layered slicing treatment; 2) performing scanning path filling; 3) obtaining a printing path; and 4) printing the product from bottom to top layer by layer. The device has reasonable design, simple operation, high forming efficiency and good use effects and is free of a sealed forming chamber and also is free of a protective atmosphere or a vacuum environment, wherein the work piece forming process is directly carried out under atmospheric environment.

Description

technical field [0001] The invention belongs to the technical field of rapid prototyping, and in particular relates to a rapid prototyping equipment and a prototyping method of plasma melting casting. Background technique [0002] At present, the rapid prototyping technology of metal parts at home and abroad is mainly the selective laser melting rapid prototyping technology (Selective laser melting, SLM). For example, the US Patent No. US7047098 "PROCESS AND DEVICE FOR PRODUCING A SHAPED BODY BY SELECTIVE LASERMELTING" describes in detail a selective laser melting forming method and equipment for manufacturing dense parts using a three-dimensional digital model. The Chinese invention patent "selective laser melting rapid prototyping equipment for direct manufacturing of large parts" with the publication number CN 102266942A discloses a selective laser melting rapid prototyping equipment for direct manufacturing of large dense parts, which mainly includes laser arrays, optica...

AI Technical Summary

Problems solved by technology

[0010] First, the laser cannot protect the droplet, and it is necessary to pass a protective gas at the wire feeder. The protective gas is easy to cool the droplet, which has an adverse effect on the solidification and layered formation of the droplet, resulting in low mechanical properties of the three-dimensional metal parts.

[0011] Second, the laser power is low and the diameter of the metal wire is large, so it is difficult to realize the rapid prototyping of ceramic and composite material parts

[0012] Third, due to the surface tension, the droplet cooling and solidification will produce circular shrinkage, resulting in the surface of the part is not smooth

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