Operating principle of sfe electrochemical machines
SFE electrochemical machines produced by the Manufacturing and Commercial Enterprise STANKOFINEXPO, LLC are intended for dimensional electrochemical machining of shaping surfaces of die tooling, matrices, cavities and parts of press molds, punches, tooling for press tools regardless of raw material hardness.
Electrochemical machining process diagram
Direct pulse current power supply (TCS) is connected to two electrodes:
- to the tool electrode – cathode (-)
- and the processed workpiece – anode (+).
Electrolyte, which is a water solution of sodium nitrate (NaNO3) is pumped into the spark gap.
There is a purposeful dissolution of anode workpiece under influence of electric current.
Cathode tool is fluctuating in the Z coordinate position with frequency F=50 Hz and amplitude A=0.3 mm.
At moving to the workpiece there is an anodic dissolution of the workpiece under influence of pulse current.
At moving away from the workpiece there is absence of electric current and there is exchange of electrolyte and entrainment of electrode reaction product.
Tracking system of SFE electrochemical machine supports a minimum required spark gap.