Electrode wire for slow-moving wire electric discharge machining with carbon on the surface layer and preparation method thereof

A technology of electrode wire and slow wire walking, which is applied in the direction of electric processing equipment, electrode manufacturing, metal processing equipment, etc., to achieve uniform discharge intensity, increase discharge frequency, and improve processing accuracy.

Active Publication Date: 2020-12-08
NINGBO BODE HIGHTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, the processing accuracy, surface finish and processing speed have developed by leaps and bounds compared with the first generation of copper wire, but the development of the industry will never satisfy the status quo. In the new manufacturing environment, the current slow-moving wire Spark machining users are facing new difficulties and challenges

Method used

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  • Electrode wire for slow-moving wire electric discharge machining with carbon on the surface layer and preparation method thereof
  • Electrode wire for slow-moving wire electric discharge machining with carbon on the surface layer and preparation method thereof
  • Electrode wire for slow-moving wire electric discharge machining with carbon on the surface layer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 1. Prepare brass grades H65 and wire blanks with a diameter of Φ1.2mm. After electroplating pretreatment, carry out alkali cleaning and pickling. After the surface of the wire blanks is cleaned, enter the electroplating tank. The bath liquid is zinc sulfate 1000g / L, CHO A mixed solution of 20g / L of organic matter, 15g / L of aluminum salt and 15g / L of potassium salt, the production speed is set to 100m / min, the electroplating current is 900A, the voltage is 8V, and the coating thickness of the final electroplating wire billet is 10 microns. The surface roughness of the blank is Ra 0.12 μm.

[0038] 2. Carry out the carbon precipitation reaction in the annealing furnace with 97% nitrogen content, the reaction temperature is 150°C, the reaction time is 10 hours, the furnace temperature is 50°C, and the uniformity in the furnace is ±10 ℃.

[0039] 3. The wire blank after the carbon precipitation reaction is cleaned with aviation kerosene, stretched to Φ0.6mm after cleaning,...

Embodiment 2

[0045] 1. Prepare brass grades H65 and wire blanks with a diameter of Φ1.2mm. After electroplating pretreatment, carry out alkali cleaning and pickling. After the surface of the wire blanks is cleaned, enter the electroplating tank. The bath liquid is zinc sulfate 1000g / L, CHO A mixed solution of 20g / L of organic matter, 15g / L of aluminum salt and 15g / L of potassium salt, the production speed is set to 100m / min, the electroplating current is 2000A, the voltage is 9V, and the coating thickness of the final electroplating wire billet is 20 microns. The surface roughness of the blank is Ra 0.15 μm.

[0046] 2. Carry out the carbon precipitation reaction in the annealing furnace with 97% nitrogen content, the reaction temperature is 750°C, the reaction time is 3 hours, the furnace temperature is 80°C, and the uniformity in the furnace is ±10 ℃.

[0047] 3. The wire billet after the carbon precipitation reaction is cleaned with aviation kerosene, and drawn to the specification of ...

Embodiment 3

[0053] 1. Prepare brass grades H65 and wire blanks with a diameter of Φ1.2mm. After electroplating pretreatment, carry out alkali cleaning and pickling. After the surface of the wire blanks is cleaned, enter the electroplating tank. The bath liquid is zinc sulfate 1000g / L, CHO A mixed solution of 20g / L of organic matter, 15g / L of aluminum salt and 15g / L of potassium salt, the production speed is set to 100m / min, the electroplating current is 900A, the voltage is 8V, and the coating thickness of the final electroplating wire billet is 10 microns. The surface roughness of the blank is Ra 0.12 μm.

[0054] 2. Carry out carbon precipitation reaction in the annealing furnace with 97% nitrogen content in the plated wire blank. The reaction temperature is 750°C, the reaction time is 10 hours, the furnace temperature is 80°C, and the uniformity in the furnace is ±10 ℃.

[0055] 3. The wire billet after the carbon precipitation reaction is cleaned with aviation kerosene, and drawn to ...

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Abstract

The invention discloses a slow-moving wire electric discharge machining electrode wire containing carbon in the surface layer and a preparation method thereof, which is characterized in that the electrode wire includes a core material (1), an outermost carbonized layer (3), and a The phase change layer (2) between the material (1) and the carbonized layer (3). The electrode wire with this special structure can not only increase the processing speed by more than 15% compared with the coated wire, but also outperform the coated wire in processing accuracy. The electrode wire has simple processing technology, greatly improved performance, and has stronger market competitiveness compared with the coated wire.

Description

technical field [0001] The invention relates to the technical field of slow wire electric discharge machining, in particular to a carbon-containing electrode wire for slow wire electric discharge machining and a preparation method thereof. Background technique [0002] WEDM (Wire cut Electrical Discharge Machining) is also called wire cutting. The principle is to use the continuously moving electrode wire as the electrode, conduct pulse spark discharge on the workpiece to etch the metal, and finally process and shape it according to the set trajectory. Compared with other processing methods, WEDM has better roundness error, straight line error and dimensional error, and is widely used in aerospace manufacturing. Especially since 1980, as the molds of precision machinery parts, home appliances, and communication equipment have gradually become more sophisticated, wire discharge machining has become an indispensable processing method in the mold manufacturing industry. In re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23H7/10B23H7/22
CPCB23H7/10B23H7/22B23H7/08C25D7/0607C25D5/50C25D3/22C25D5/34C25D5/605B23H1/06
Inventor 林火根孟宪旗梁志宁吴桐胡美俊顾洪方陈益波
Owner NINGBO BODE HIGHTECH CO LTD
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