水を加工液とする高速放電加工の添加剤による効果
1971 年 5 巻 9 号 p. 26-34
詳細
1971 年 5 巻 9 号 p. 26-34
Increasee of material removal rate in high speed EDM is obtained by addition of the addition agent to the water-base working fluid which contains electric-conductive powder.
The addition agent used in the experiment is the mixture of surface achieve agent and mineral oil Which is also effective for rust prevention.
It is found that the removal rate increases with increase of the content of the addition agent aproaching a constant with the content of over 7% of the agent.
The maximum removal rate obtainei in the experiments is about 40g/min with the mean electric current 200A which is about 20% bigger than that with the conventional water-base working fluid.
Measurement of the electric capacity by using the pulse technique shows formation of the electric double layer on the surface of the electrodes with the addition agent. The increase of the removal rate with the addition agent could be attributed to less adhesivity of erosion products on the work surface due to formation of the adsorption layer.
