Auxiliary processing device for electric pulse pipe fitting

Abstract

The invention discloses an auxiliary processing device for an electric pulse pipe fitting. The auxiliary processing device comprises a pulse power supply, a concave die, a core rod, insulating layers, a first positive electrode, a second positive electrode, a first negative electrode and a second negative electrode, wherein the first positive electrode and the second positive electrode are arranged on the inner surface of the concave die; the first negative electrode and the second negative electrode are arranged on the outer surface of the core rod; the first positive electrode, the second positive electrode, the first negative electrode and the second negative electrode are annular electrodes; the first positive electrode, the second positive electrode, the first negative electrode and the second negative electrode are connected with a pulse power supply; the insulating layers are uniformly distributed on the surfaces of the concave die and the core rod except the positive electrodes and the negative electrodes. According to the auxiliary processing device for the electric pulse pipe fitting, pulse current is introduced and an electro-plastic effect is used for enabling a raw material pipe fitting to be easily extruded and molded; the device disclosed by the invention is simple in structure, rapid in heating and high in working efficiency, and the cost loss and the energy source loss are reduced.

Description

technical field [0001] The invention relates to the field of extrusion molding in plastic processing, in particular to an electric pulse assisted pipe material processing device. Background technique [0002] Extrusion molding is an important forming technology in the field of plastic processing. It applies strong pressure to the metal billet placed in the die cavity (or extrusion cylinder) to force the metal billet to produce directional plastic deformation. A plastic processing method for parts or semi-finished products that are extruded in a die hole to obtain the desired cross-sectional shape, size and certain mechanical properties. Extrusion can produce tubes, rods, profiles, wires and various mechanical parts. The traditional extrusion technology is a plastic processing method that applies a certain external force to the metal billet placed in the mold to make it press out of the die hole or flow into a specific pore. According to the metal plastic flow direction and...

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Problems solved by technology

[0004] There are many related invention patents for hot extrusion forming. In the invention with the publication number CN2715873Y, a tool and die for seamless aluminum tube extrusion is provided. It is mainly aimed at aluminum tubes that are easier to be plastically formed, but this invention cannot Realize the processing of pipe thinning and thinning

And publication number is in the invention of CN101670385A, has used to apply pulse current to metal material to increase the formability of material, but its device is simple, is not suitable for processing pipe

In the invention with the publication number CN202516868U, in order to realize extrusion forming, a heater is installed in the middle of the extrusion cylinder to heat the metal. Since the heating object is a whole piece of raw material, there are problems of long heating time, large heat loss and low efficiency.

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