Wire powder composite plasma arc additive manufacturing device and using method

Abstract

The invention discloses a wire powder composite plasma arc additive manufacturing device and a using method, and relates to the field of additive manufacturing for intermetallic compound alloys. The device comprises a plasma welding device, an arc height sensor (12), a wire powder composite filling material device and a computer (16), wherein the arc height sensor (12) is assembled on the plasma welding device; and the plasma welding device, the arc height sensor (12) and the wire powder composite filling material device are connected with the computer (16) separately. According to the invention, a powder adding device is introduced on the basis of double dissimilar wires, so that flexible regulation and control for alloy trace elements of a target intermetallic compound are realized, and various properties of the intermetallic compound are effectively improved. The arc height sensor is additionally arranged to feed back and adjust a plasma arc height, so that the transition stability of a plasma arc, a molten pool and wire powder filling materials in an additive process is effectively improved, and the defect rate of additive components is reduced.

Description

technical field [0001] The invention relates to the field of additive manufacturing of intermetallic compound alloys, in particular to a silk powder composite plasma arc additive manufacturing device and a use method. Background technique [0002] Intermetallic compound alloys benefit from their low density and excellent performance in special working environments such as high temperature and strong corrosion and wear. , biomedicine (nickel-titanium alloy) and other engineering fields have broad application prospects. However, due to the generally high room temperature brittleness of intermetallic compound alloys, defects such as cold cracks and solidification cracks are prone to occur during the preparation and forming process. Therefore, existing intermetallic compound alloy preparation and forming methods, such as precision casting, vacuum arc smelting, and plasma sintering, all require complicated processes, resulting in extremely high manufacturing costs and low effici...

AI Technical Summary

Problems solved by technology

In addition, the arc height of the electric / plasma arc has a great influence on the stability of the additive forming process, and the existing system cannot achieve stable control of the arc height, resulting in unstable forming of additive components

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