Electrode wire for one-way silking electro discharge machining and preparation method thereof

A technology of electrode wire and electric spark, which is applied in the field of electrode wire for unidirectional wire electric discharge machining and its preparation, can solve the problem of workpiece parallelism, surface roughness, dimensional accuracy, workpiece damage, restricting the development of high-end manufacturing, and poor cutting quality High-level problems, to achieve the effect of fast discharge cutting, shorten ignition delay time, and optimize discharge energy

Active Publication Date: 2017-01-04
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, wo

Method used

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  • Electrode wire for one-way silking electro discharge machining and preparation method thereof
  • Electrode wire for one-way silking electro discharge machining and preparation method thereof
  • Electrode wire for one-way silking electro discharge machining and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example 1:

[0033] Take the copper-zinc alloy required to prepare the core material 1 and process it into a bus bar with a diameter of 0.6mm, and perform the degreasing-pickling-water washing-galvanization treatment on the prepared bus bar. The thickness of the zinc plating layer 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. Perform alloying heat treatment on the first wire blank prepared above at a temperature of 390°C and a heat treatment time of 8 hours to form a fast discharge cutting layer 3 on the core material 1 to obtain a second wire blank (such as figure 2 Shown). The second wire blank prepared above was polished and pretreated with a processing rate of 5%. After the polishing pretreatment, the oil removal-pickling-water washing-galvanizing treatment was carried out. The thickness of the zinc coating 7 was 1um, and the third wire blank (such as image 3 Shown), where the ele...

Example Embodiment

[0035] Example 2:

[0036] Take the copper-zinc alloy required to prepare the core material and process it into a bus bar with a diameter of 1.0mm. The prepared bus bar is subjected to degreasing-pickling-water washing-galvanization treatments. The thickness of the zinc coating is 10um to obtain the first wire blank. The electroplating current is 2000A and the voltage is 180V. The first wire blank prepared above is subjected to alloying heat treatment at a temperature of 400° C., and the heat treatment time is 2-10 hours to form a fast discharge cutting layer on the core material to obtain a second wire blank. The second wire blank prepared above was subjected to polishing pretreatment with a processing rate of 10%. After the polishing pretreatment, the oil removal-pickling-water washing-galvanizing treatment was carried out. The thickness of the zinc coating was 3um, and the third wire blank was prepared. The electroplating current is 1500A and the voltage is 150V. Finally, th...

Example Embodiment

[0038] Example 3:

[0039] Take the copper-zinc alloy required to prepare the core material and process it into a bus bar with a diameter of 1.2mm. The prepared bus bar is subjected to degreasing-pickling-water washing-galvanization treatments. The thickness of the zinc coating is 15um to obtain the first wire blank. The electroplating current is 2500A and the voltage is 220V. Perform alloying heat treatment on the first wire blank prepared above at a temperature of 440° C. and a heat treatment time of 10 hours to form a fast discharge cutting layer on the core material to obtain a second wire blank. The second wire blank prepared above was subjected to polishing pretreatment with a processing rate of 15%. After the polishing pretreatment, degreasing-pickling-water washing-galvanizing treatment was carried out. The thickness of the zinc coating was 10um, and the third wire blank was prepared. The electroplating current is 2000A and the voltage is 220V. Finally, the third wire b...

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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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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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