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Electrolyte for electro-chemical machining of metal product

a technology of electrochemical machining and electrochemical machining, which is applied in the manufacture of electrolysis components, manufacturing tools, printed circuits, etc., can solve the problems of defective machining, defective machining, and electrolyte must be changed, so as to reduce the defect of an electrochemical machining product, improve the efficiency of electrochemical machining, and increase the lifespan of an electrolyte and an electrod

Inactive Publication Date: 2009-06-04
SAMSUNG ELECTRO MECHANICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0011]An aspect of the present invention provides an electrolyte for electro-chemical machining of a metal product, which can reduce a defect of an electrochemical machining product, increase a lifespan of an electrolyte and an electrode, and improve efficiency of the electrochemical machining.

Problems solved by technology

Such a metal precipitate deposit on a surface of the workpiece, a surface of the electrode or on an electrolyte bath, causing defects in micro ECM.
The precipitate in the form of sludge distorts a shape of the workpiece or interrupts power supply, resulting in defective machining.
However, this method also has limitations in that an electrolyte must be changed when the amount of precipitates increases above a predetermined level.

Method used

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Examples

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embodiments

[0037]In embodiments below, electrolytes for electrochemical machining for a metal product were prepared according to the embodiment of the present invention, metal ions (e.g., iron ions) were added to check an effect of removing metal precipitates in these electrolytes, and removal rates thereof were calculated.

[0038]First, to prepare an electrolyte, sodium nitride (NaNO3) as an inorganic salt was dissolved in pure water serving as a solvent, thereby preparing a NaNO3 aqueous solution of about 150 g / L. A predetermined amount of ferric nitride (Fe(NO3)3.12H2O) was added to the solution. Thus, the electrolyte contained iron ions at a predetermined concentration. The electrolyte was controlled at neutral pH by using a sodium hydroxide (NaOH) solution of about 0.1M. As a result, ochre yellow precipitates were observed with the naked eye.

[0039]It was observed whether the precipitates were removed, adding a predetermined amount of a complexing agent and a reducing agent in the electrolyt...

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Abstract

Disclosed is an electrolyte for electrochemical machining of a metal product, which can reduce a defect of an electro-chemical machining product, increase a lifespan of an electrolyte and an electrode, and improve efficiency of the electrochemical machining. The electrolyte includes an inorganic salt and at least one of a complexing agent and a reducing agent in a solvent.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the priority of Korean Patent Application No. 2007-123791 filed on Nov. 30, 2007, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to an electrolyte for electrochemical machining of a metal product, and more particularly, to an electrolyte for electro-chemical machining of a metal product, which can reduce a defect of an electrochemical machining product, increase a lifespan of an electrolyte and an electrode, and improve efficiency of the electrochemical machining.[0004]2. Description of the Related Art[0005]In general, electrochemical machining (ECM) is a machining method that uses an electro-chemical reaction of a conductive material. In the ECM, an electrode with a specific shape and a workpiece that is to be machined are dipped in an electrolyte. The workpiece ser...

Claims

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Application Information

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IPC IPC(8): C25F3/02
CPCC25F3/02B23H3/08
Inventor KIM, JONG YUNLEE, SEOUNG JAEKIM, BAE KYUNKIM, YOUNG TAECHOI, MI JIN
Owner SAMSUNG ELECTRO MECHANICS CO LTD
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