Research on electropolishing of transfer-needle of computerized flat knitting machine

The defects on the transfer needle surface and problems which cannot be solved by the conventional polishing method,were analyzed,and an electropolishing method for local polishing the needle has been introduced.The inner surface of the transfer needle hook and the sheared surface have been polished and studied by the electro-polishing method respectively,which results show that most of the tiny pleats inside the surface hook can be removed by electro-polishing,and the polished surface is smooth without any pleat.However,the effects of electro-polishing on reducing the roughness of the sheared surface were limited with poor gloss.In addition,the most of the jagged defects induced by the punching procedure can be removed during the electro-polishing process with smooth surface,but no sharp peak.