A kind of electrode wire and preparation method thereof

Abstract

The invention discloses an electrode wire. The electrode wire comprises an electrode wire core material and an annular structure arranged on the surface of the core material, the annular structure iscomposed of a plurality of irregular arc-shaped sheet bodies and a plurality of connecting bridges for connecting the arc-shaped sheet bodies, the inner surfaces of the connecting bridges are attachedto the outer surface of the core material, the core material, the arc-shaped sheet bodies and the connecting bridges are all made of copper-zinc alloy, and the materials of the arc-shaped sheet bodies and the connecting bridges comprise M, wherein the M is any two kinds of elements of Ag, Sn, Ti, Ni, Nb, Mo and Sb. The electrode wire is high in straightness and good in wear resistance. The invention further discloses a preparation method of the electrode wire.

Description

technical field [0001] The invention relates to the technical field of electrode wires, in particular to an electrode wire and a preparation method thereof. Background technique [0002] As we all know, the electrode wire used in slow-moving wire electric discharge machining is usually wound on a spool for storage and transportation; when in use, the wound electrode wire is pulled out from the spool one by one. Since the electrode wire has a certain hardness, and the adjacent wires on the spool are closely arranged without gaps, it is easy to be squeezed and deformed, so the extracted electrode wire is in a bent state and cannot be completely restored to a straight state immediately. Although the straightness of the traditional brass wire is relatively good, that is, the traditional brass wire can recover the straight line quickly when it is pulled out from the spool, but the mechanical properties, electrical properties and EDM effects of the traditional brass wire are far i...

AI Technical Summary

Problems solved by technology

However, if the tension of the electrode wire is too large and the electrode wire exceeds the limit of elastic deformation, due to the wire loss caused by electric corrosion and the effect of electromagnetic force, coupled with the influence of rapid heating and rapid cooling during discharge, it is easy to cause fatigue and cause fracture. If the tension force of the electrode wire is too small, especially when cutting thicker workpieces, due to the large span of the electrode wire, the electrode wire will be bent and deformed by the discharge pressure during the processing, resulting in the electrode wire cutting The trajectory lags behind and deviates from the contour of the workpiece, resulting in defects in the shape and size of the workpiece that are too large. For example, when cutting a thicker cylindrical workpiece, the shape of the waist drum will appear.

Generally speaking, the straightness of the electrode wire is closely related to the tension adjustment function of the tensioning device. The electrode wire needs to use the tension tensioning device to achieve a higher straightness, while the fluctuation range of the tensioning device in the prior art is very large. Large ones will cause poor straightness of the electrode wire and easy wire breakage

[0006] In summary, the straightness of the coating electrode wire in the prior art needs to be improved

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