Electrode wire for wire electric discharge machining

Abstract

The invention discloses an electrode wire for wire electrical discharge machine. The electrode wire includes a core material in a silk thread shape and a surface layer covering the surface of the corematerial, wherein the surface layer includes a base layer attached to the surface of the core material, the base layer includes a plurality of irregular polygon large blocks which are intermittentlyattached to the surface of the core material, and first cracks are formed between the adjacent large blocks; the surface layer further includes a face layer attached to the surface of the base layer,a plurality of intermittent polygonal small blocks are attached to the outer surface of each large block, irregular second cracks are formed between the adjacent small blocks, and the face layer is formed by all the small blocks and all the second cracks together. The electrode wire is provided with a net crack structure with the two-stage cracks and can effectively cut hard-machining workpieces with corners. The invention further discloses a preparation method of the electrode wire for wire electrical discharge machine.

Description

technical field [0001] The invention relates to the technical fields of electric discharge wire cutting processing technology and electrode wire, in particular to an electrode wire for electric discharge wire cutting processing. Background technique [0002] Wire electrical discharge machining, English name Wire electrical discharge machine, referred to as WEDM, is a processing technology based on the principle of electric discharge machining, using wire-shaped tool electrodes, that is, electrode wires for precision manufacturing, mainly using cutting methods to process various Various workpieces. Due to the extremely short pulse discharge time of EDM, which belongs to the microsecond level, and the processing is accompanied by complex physical processes such as electricity, magnetism, and heat, and chemical erosion processes. Therefore, during the machining process, within a very short period of time, a discharge channel is generated between the two electrodes, and local t...

AI Technical Summary

Problems solved by technology

The continuous β-brass sub-layer in the above-mentioned electrode wire coating is better than the discontinuous sub-layer, and the fracture structure of the surface layer has no obvious characteristics, which is suitable for rough cutting of ordinary workpieces, and cannot cut high-precision, surface Difficult to machine workpieces with clean corners

[0006] To sum up, the wire electrode of the prior art is difficult to cut difficult-to-machine workpieces with high precision and smooth surfaces, and the efficiency of WEDM needs to be improved.

Images