放電切断加工の加工面品質と加工特性の研究

抄録

Electric discharge cutting by using an electolytic working fluid (silicic acid soda) has become to be applied widely for special or particular metal and products machining. This method is better economy than mechanical cutting methods, and the demand has an increasing every year as the progress of development for special or particular materials. But there are many problems to be solved in the point of improvement the cutting characteristics and security of cutting surface quality.
In this paper, the residual stress on working surface, hardness in the affected zone and working characteristics such as working (cutting) speed, wear rate of electrode and etc. were examined experimentaly in the electric discharge cutting by the belt-shaped tool electrode.
As a result, it became clear that the residual stress and the affected zone by thermal action were mainly affected by working current and running speed of tool electrode, working (cutting) speed was influenced considerably to working current, density of working fluid and tool electrode running speed, and generally wear rate of electrode was inclined conversely to the tendency of working (cutting) speed, etc.