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Electrode wire for unidirectional wire electric discharge machining and preparation method thereof

An electrode wire and electric spark technology is applied in the field of electrode wire for unidirectional wire EDM and its preparation. Advanced problems, to achieve the effect of rapid discharge cutting, shortening the ignition delay time, and optimizing the discharge energy

Active Publication Date: 2018-05-15
NINGBO BODE HIGHTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the current domestic unidirectional WEDM wire electrode generally has problems such as low precision, low cutting quality, workpiece parallelism, surface roughness, dimensional accuracy, and workpiece damage, which restricts my country's high-end manufacturing development

Method used

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  • Electrode wire for unidirectional wire electric discharge machining and preparation method thereof
  • Electrode wire for unidirectional wire electric discharge machining and preparation method thereof
  • Electrode wire for unidirectional wire electric discharge machining and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Take the copper-zinc alloy required for the preparation of the core material 1 and draw and process it into a bus bar with a diameter of 0.6 mm. The bus bar is subjected to degreasing-acid washing-water washing-galvanizing treatment, and the thickness of the zinc coating 2 is 5um to obtain the first wire billet (such as figure 1 shown), where the electroplating current is 1500A and the voltage is 150V. Carry out alloying heat treatment to the first wire billet obtained above, temperature is 390 ℃, heat treatment time is 8h, forms fast discharge cutting layer 3 on core material 1, makes second wire billet (such as figure 2 shown). Carry out polishing pretreatment to the second wire billet obtained above, the processing rate is 5%, carry out degreasing-pickling-washing-galvanizing treatment after polishing pretreatment, the thickness of galvanized layer 7 is 1um, makes the third wire billet (such as image 3 Shown), wherein, the electroplating current is 1000A, and the...

Embodiment 2

[0036] Take the copper-zinc alloy required for the preparation of the core material and stretch it into a bus bar with a diameter of 1.0mm, and then perform degreasing-pickling-water washing-galvanizing treatment on the bus bar, the thickness of the zinc coating is 10um, and the first wire blank is obtained. Among them, the electroplating current is 2000A, and the voltage is 180V. Alloying heat treatment is carried out on the first wire billet prepared above, the temperature is 400° C., and the heat treatment time is 2-10 hours, a fast discharge cutting layer is formed on the core material, and the second wire billet is obtained. Carry out polishing pretreatment on the second wire billet obtained above, the processing rate is 10%, after the polishing pretreatment, carry out degreasing-pickling-water washing-galvanizing treatment, the thickness of the zinc coating is 3um, and the third wire billet is obtained, wherein, The electroplating current is 1500A, and the voltage is 150...

Embodiment 3

[0039] The copper-zinc alloy required for the preparation of the core material is stretched and processed into a bus bar with a diameter of 1.2mm, and the bus bar is subjected to degreasing-acid washing-water washing-galvanizing treatment, and the thickness of the zinc coating is 15um to obtain the first wire blank. Among them, the electroplating current is 2500A, and the voltage is 220V. Alloying heat treatment is carried out on the first wire billet prepared above, the temperature is 440° C., the heat treatment time is 10 h, a fast discharge cutting layer is formed on the core material, and the second wire billet is obtained. Carry out polishing pretreatment on the second wire billet obtained above, the processing rate is 15%, after polishing pretreatment, carry out degreasing-pickling-water washing-galvanizing treatment, the thickness of the zinc coating is 10um, and the third wire billet is obtained, wherein, The electroplating current is 2000A, and the voltage is 220V. F...

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Abstract

The invention relates to an electrode wire for one-way silking electro discharge machining. The electrode wire comprises a core material and a case layer, wherein the case layer comprises a fast discharging cutting layer, a low-damage fine trimming layer and a lubrication gap; the fast discharging cutting layer covers the surface of the core material; the low-damage fine trimming layer is arranged on the surface of the electrode wire; the lubrication gap is formed between the fast discharging cutting layer and the low-damage fine trimming layer; the fast discharging cutting layer is prepared from the following ingredients in percentage by mass: 40 to 65 percent of zinc, the balance copper and unavoidable impurities brought by the raw materials; the low-damage fine trimming layer is prepared from the following ingredients in percentage by mass: 80 to 100 percent of zinc, the balance copper, and unavoidable impurities brought by the raw materials. The invention also relates to a preparation method of the electrode wire. Compared with the prior art, the electrode wire provided by the invention can realize the fast discharging cutting; the low-damage corrosion processing can be realized; a workpiece is enabled to reach the specified quality requirements; the processing precision is effectively improved.

Description

technical field [0001] The invention relates to the technical field of electrical discharge machining, in particular to an electrode wire for unidirectional wire electrical discharge machining and a preparation method thereof. Background technique [0002] According to the different running speeds of electrode wires, electrode wires for EDM are divided into slow wire electrode wires and fast wire electrode wires. Among them, slow wire electrode wires perform low-speed one-way movement in EDM, so they are also called one-way wires. The speed of wire-feeding electrode wire is generally lower than 0.2mm / s, the precision reaches 0.001mm level, and the surface quality is close to the grinding level. With the development of key manufacturing fields such as aviation, aerospace, military industry, automobiles, and semiconductors, especially the rapid development of precision mold manufacturing, the demand for various high, medium, and low-grade slow-feeding wire-cut electric dischar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23H7/08B23H7/22B23H7/24
CPCB23H7/08B23H7/22B23H7/24
Inventor 梁志宁万林辉吴桐孟宪旗林火根陈小军钟杰
Owner NINGBO BODE HIGHTECH CO LTD
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