Electrolyte for electro-chemical machining of metal product

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.

1 . An electrolyte for electrochemical machining for a metal product, comprising:
 an inorganic salt in a solvent; and   at least one of a completing agent and a reducing agent.   
   
   
       2 . The electrolyte of  claim 1 , wherein the metal product comprises one selected from the group consisting of iron (Fe), copper (Cu), nickel (Ni), aluminum (Al), tin (Sn), chrome (Cr), zinc (Zn) and an alloy thereof. 
   
   
       3 . The electrolyte of  claim 1 , wherein the solvent is pure water. 
   
   
       4 . The electrolyte of  claim 1 , wherein the inorganic salt is at least one selected from the group consisting of NaNO 3 , NaCl, NaClO 4 , Na 2 SO 4 , KNO 3 , KCl, KClO 4 , K 2 SO 4 , LiNO 3 , LiCl, LiClO 4 , and Li 2 SO 4 . 
   
   
       5 . The electrolyte of  claim 1 , wherein the inorganic salt has a concentration ranging from 100 g/L to 500 g/L with respect to a volume of the entire electrolyte. 
   
   
       6 . The electrolyte of  claim 1 , wherein the complexing agent is at least one selected from the group consisting of citric acid, acetic acid, oxalic acid, fulvic acid, succinic acid, tartaric acid, lactic acid, gluconic acid, maleic acid, malic acid and a salt thereof. 
   
   
       7 . The electrolyte of  claim 6 , wherein the complexing agent is at least one selected from the group consisting of ethylenediaminetetraacetic acid, hydroxyethylethylenediaminetriacetic acid, and nitrilotriacetic acid. 
   
   
       8 . The electrolyte of  claim 1 , wherein the complexing agent has a concentration ranging from 0.5 g/L to 20 g/L with respect to a volume of the entire electrolyte. 
   
   
       9 . The electrolyte of  claim 1 , wherein the reducing agent is at least one selected from the group consisting of L-ascorbic acid, D-isoascorbic acid and a salt thereof. 
   
   
       10 . The electrolyte of  claim 1 , wherein the reducing agent has a concentration ranging from 0.5 g/L to 20 g/L with respect to a volume of the entire electrolyte. 
   
   
       11 . The electrolyte of  claim 1 , further comprising a corrosion inhibitor, a surfactant, a viscosity modifier and a pH adjuster. 
   
   
       12 . The electrolyte of  claim 1 , wherein pH of the electrolyte ranges from pH 2 to pH 7.