Electrochemical Surface Finishing of Tungsten Carbide Alloy

A review of physical experimental research in jet electrochemical machining

“…Mizugai et al offer another option of using an AC current to machine the tungsten carbide samples, similar to what would be later seen on stainless steel by Kawanaka and Kunieda [16]. The concept was that when the polarity was reversed, the now cathodic workpiece would produce NaOH on the surface as previously found on the metallic tool, a concept based upon the work of Masuzawa and Kimura [26]. The NaOH produced on the workpiece dissolves the tungsten oxide layer on the workpiece surface.…”

On-machine tool resharpening process for dry machining of aluminum alloys employing LME phenomenon

“…The conventional chemical removal process employing acid and alkali solutions to dissolve aluminum adhesion on the tool surface cannot be applied because acid solutions, such as hydrochloric acid, slightly dissolve cobalt, which serves as a binder of a cemented carbide tool [12], and alkali solutions, such as aqueous sodium hydroxide, dissolve tungsten carbide [13]. Moreover, chemical processes are generally not acceptable in factories due to the hazardous characteristics of these solutions.…”

On-machine Tool Resharpening for Dry Machining of Aluminum Alloys

“…The conventional chemical removal process employing acid and alkali solutions to dissolve aluminum adhesion on the tool surface cannot be applied, because acid solutions such as hydrochloric acid slightly dissolve cobalt as a binder of a cemented carbide tool [10] and alkali solutions such as aqueous sodium hydroxide dissolve tungsten carbide [11]. Moreover, chemical processes are generally not acceptable in factories due to the hazardous characteristics of these solutions.…”