Method for forming metal wire through resistance and electromagnetic induction composite heating

Abstract

The invention discloses a method for forming a metal wire through resistance and electromagnetic induction composite heating. A geometric model of a metal part is established through computer software, layered discretization is performed, and the movement track of the part is set and simulated; the metal wire is fed to an electromagnetic induction heating zone and a resistance heating zone at the constant speed by a pulsed wire feeding mechanism and is preheated to a certain temperature by an electromagnetic induction heating power supply, the wire with certain heat is continuously fed until the metal wire and a base material are short-circuited, resistance heat is produced at the part where the metal wire makes contact with the base material, and the metal wire melts to form melt under the effect of the resistance heat; the melt is stably transited to the base material under the effects of the gravity and the electromagnetic force and is solidified; and a three-dimensional movement system controls melting, transition and solidification of the metal wire according to the originally set movement track, and a formed workpiece of the metal part is completed gradually in a point-line-surface-body manner. With the technical scheme, the method has the characteristics that the cost is reduced, the efficiency is improved, the heat input to the base material is reduced, and deformation of the base material is reduced.

Description

technical field [0001] The invention belongs to the field of forming and processing of metal parts, and in particular relates to a forming method of resistance electromagnetic induction composite heating metal wire. Background technique [0002] With the rapid development of advanced manufacturing technology, 3D printing and forming technology methods of metal parts are emerging, such as laser sintering method and laser cladding forming method, electron beam forming method, Metal parts forming methods such as plasma deposition forming method, these methods have broad application prospects in many fields such as aerospace, micro-nano manufacturing, biomedical engineering, etc., but the above-mentioned methods also have some obvious disadvantages: [0003] The investment and maintenance costs of equipment used for laser beams, electron beams and plasma beams are high, so that the manufacturing costs of metal parts are very expensive; [0004] The three forming methods of lase...

AI Technical Summary

Problems solved by technology

The heating time is longer, the efficiency is low, and the tissue performance is poor;

[0007] Electromagnetic induction wire heating takes a long time, and the molten droplets will solidify instantly after dripping out of the nozzle, which cannot guarantee the smooth transition and forming of the wire

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