Plasma electric arc additional material device and method

Abstract

The invention discloses a plasma electric arc additional material device and method. The device comprises a furnace body for containing molten metal, a wire feeding mechanism arranged on the furnace body and used for feeding a metal wire into the furnace body, a gas conveying mechanism for conveying gas into the furnace body, an electric arc generating mechanism comprises a positive electrode anda negative electrode oppositely arranged inside the furnace body, and a discharging mechanism which is arranged at the bottom end of the furnace body and communicates with the furnace body and the gasconveying mechanism to control the molten metal to be discharged, wherein an electric arc region is formed between the positive electrode and the negative electrode to melt the metal wire into moltenmetal. The metal wire inside the furnace body is fused, the molten metal is pressed out of the furnace body through the pressure of gas inside the furnace body, the molten metal is subjected to layer-by-layer additional material printing, the printing speed can be increased, the problem of the stability of a furnace hearth in the printing process is solved, and the problems that slag in the electric arc additional material printing process is splashed and the printing shaft precision is poor are avoided.

Description

technical field [0001] The invention relates to the technical field of metal additive devices, in particular to a plasma arc additive device and a material additive method. Background technique [0002] The existing arc metal additive technology generally uses an arc welding power source to melt the metal wire, and directly deposits the molten droplets on the parts. Due to the continuous generation and dripping of the melting process, the entire deposition process is prone to metal spatter and uneven print sizes. Contents of the invention [0003] The purpose of the present invention is to provide a plasma arc material adding device and a material adding method, in which the metal wire is melted in the furnace body, and the molten metal is hydraulically released from the furnace body through the air pressure in the furnace body, and the molten metal liquid is added layer by layer for printing , which can increase the printing rate, and at the same time solve the problem o...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a plasma arc material adding device and a material adding method, in which the metal wire is melted in the furnace body, and the molten metal is hydraulically released from the furnace body through the air pressure in the furnace body, and the molten metal liquid is added layer by layer for printing , can increase the printing rate, and at the same time solve the problem of the stability of the molten pool during the printing process, avoiding the problems of slag splashing and poor printing shape accuracy during the arc additive printing process

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