Additive manufacturing device and method for plasma arc gradient material of bypass hot wire consumable electrode

Abstract

The invention provides an additive manufacturing device and method for a plasma arc gradient material of a bypass hot wire consumable electrode. The device consists of an MIG welding power supply, a bypass hot wire consumable electrode plasma arc welding gun, an IGBT shunt controller, a workpiece, a current sensor and a current controller, wherein the MIG welding power supply, the bypass hot wireconsumable electrode plasma arc welding gun, the workpiece and the current sensor define a closed circuit; the MIG welding power supply, the bypass hot wire consumable electrode plasma arc welding gun, the workpiece, the IGBT shunt controller and the current controller define a closed circuit. The additive manufacturing device efficiently improves conventional electric arc welding basically, is controllable in heat input, is high in welding electric arc restraint intensity, and has the characteristics of low cost, high efficiency, high stability and the like of electric arc additive manufacturing.

Description

technical field [0001] The invention relates to a device and method for additive manufacturing, in particular to a device and method for additive manufacturing of plasma arc gradient materials bypassing hot wire melting electrodes, and belongs to the technical field of high-efficiency arc additive manufacturing. Background technique [0002] Gradient material refers to a new type of material composed of one or several components with different components. Its single or comprehensive structure, physical parameters, and physical, chemical, and biological properties are continuously changed to adapt to different environmental needs. implement a specific function. There are many traditional manufacturing methods for gradient materials, such as vapor deposition, particle alignment, and electrodeposition. However, because traditional gradient materials can only obtain blanks such as thin films or blocks, and cannot achieve near-net shape, with the progress and development of addi...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the excessive heat input in the additive manufacturing process of the melting electrode plasma arc welding makes it difficult to control the mechanical properties and forming accuracy of the material, and the composition of the deposited weld bead can only be changed by changing the welding wire, which cannot be realized. Provide a device and method for additive manufacturing of plasma arc gradient materials bypassing the hot wire melter to solve the problem of continuous adjustment of composition

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