Hoʻohana nui ʻia ʻo Edm no ka mīkini ʻana i nā ʻōmole a me nā ʻāpana me nā ʻano paʻakikī o nā lua a me nā lua; ka hana ʻana i nā mea conductive like ʻole, e like me ka metala paʻakikī a me ke kila paʻakikī; ka hana ʻana i nā lua hohonu a maikaʻi, nā lua ʻano kūikawā, nā ʻauwaha hohonu, nā hui haiki a me ka ʻoki ʻana i nā ʻāpana lahilahi, a pēlā aku; ka mīkini ʻana i nā mea hana hana like ʻole, nā template a me nā ana apo kaula, a pēlā aku.

Ke kumumanaʻo hana

I ka wā o ka EDM, ua hoʻopili ʻia ka electrode mea hana a me ka workpiece i nā pou ʻelua o ka lako mana pulse a hoʻokomo ʻia i loko o ka wai hana, a i ʻole e hoʻouka ʻia ka wai hana i loko o ka hakahaka hoʻokuʻu. Hoʻokele ʻia ka electrode mea hana e hānai i ka workpiece ma o ka ʻōnaehana hoʻokele aunoa o ka hakahaka. Ke hiki ka hakahaka ma waena o nā electrodes ʻelua i kahi mamao, ʻo ka volta impulse i hoʻopili ʻia ma nā electrodes ʻelua e wāwahi i ka wai hana a hoʻoulu i ka hoʻokuʻu ʻana o ka spark.

Ma ke kahawai micro o ka hoʻokuʻu ʻana, ua hoʻopili koke ʻia ka nui o ka ikehu wela, hiki ke kiʻekiʻe ka mahana i 10000 ℃ a he loli koʻikoʻi hoʻi ke kaomi, no laila e heheʻe koke a vaporize nā mea metala kūloko ma ka ʻili hana o kēia wahi, a pahū i loko o ka wai hana, e hoʻopili koke, e hana i nā ʻāpana metala paʻa, a lawe ʻia e ka wai hana. I kēia manawa ma ka ʻili o ka workpiece e waiho i kahi lua liʻiliʻi, ua oki ka hoʻokuʻu ʻana no ka manawa pōkole, e hoʻihoʻi ka wai hana ma waena o nā electrodes ʻelua i ke kūlana insulation.

A laila haki ka volta pulse aʻe ma kahi ʻē aʻe kahi e kokoke loa ai nā electrodes kekahi i kekahi, e hana ana i kahi hoʻokuʻu ʻana o ka huna ahi a hana hou i ke kaʻina hana. No laila, ʻoiai he liʻiliʻi loa ka nui o ka metala i ʻānai ʻia no kēlā me kēia hoʻokuʻu ʻana o ka pulse, hiki ke hoʻopau ʻia ka metala hou aʻe ma muli o nā tausani o nā hoʻokuʻu pulse i kēlā me kēia kekona, me kahi huahana kikoʻī.

Ma lalo o ke kūlana o ka mālama ʻana i ka hakahaka hoʻokuʻu mau ma waena o ka electrode mea hana a me ka workpiece, ua ʻānai ʻia ka metala o ka workpiece ʻoiai e hānai mau ʻia ana ka electrode mea hana i loko o ka workpiece, a ʻo ka hope loa ke ʻano e pili ana i ke ʻano o ka electrode mea hana e mīkini ʻia. No laila, inā like ke ʻano o ka electrode mea hana a me ke ʻano neʻe pili ma waena o ka electrode mea hana a me ka workpiece, hiki ke mīkini ʻia nā ʻano ʻano paʻakikī. Hana pinepine ʻia nā electrodes mea hana me nā mea pale i ka corrosion me ka conductivity maikaʻi, ke kiʻekiʻe o ka heheʻe ʻana a me ka hana maʻalahi, e like me ke keleawe, graphite, keleawe-tungsten alloy a me ka molybdenum. I ke kaʻina hana o ka mīkini ʻana, loaʻa pū ka pohō o ka electrode mea hana, akā emi ma mua o ka nui o ka pohō o ka metala workpiece, a kokoke paha i ka nalowale ʻole.

Ma ke ʻano he mea hoʻokuʻu, he kuleana ko ka wai hana i ka hoʻoluʻu ʻana a me ka wehe ʻana i nā ʻāpana i ka wā o ke kaʻina hana. ʻO nā wai hana maʻamau he medium me ka viscosity haʻahaʻa, kahi flash point kiʻekiʻe a me ka hana paʻa, e like me ke kerosene, ka wai deionized a me ka emulsion. ʻO ka mīkini uila uila kahi ʻano hoʻokuʻu hoʻonāukiuki ponoʻī, ʻo kona mau ʻano penei: ʻo nā electrodes ʻelua o ka hoʻokuʻu ʻana i ka uila he voltage kiʻekiʻe ma mua o ka hoʻokuʻu ʻana, ke hoʻokokoke aku nā electrodes ʻelua, ua haki ka medium, a laila hana ʻia ka hoʻokuʻu ʻana o ka uila. Me ke kaʻina hana haki, emi nui ka pale ma waena o nā electrodes ʻelua, a emi nui hoʻi ka voltage ma waena o nā electrodes. Pono e kinai ʻia ke kahawai uila i ka manawa ma hope o ka mālama ʻia ʻana no kahi manawa pōkole (maʻamau 10-7-10-3s) e mālama i nā ʻano "pou anuanu" o ka hoʻokuʻu ʻana o ka uila (ʻo ia hoʻi, ʻaʻole hiki i ka ikehu wela o ka hoʻololi ikehu kahawai i ka hohonu o ka electrode i ka manawa), i hoʻopili ʻia ka ikehu kahawai i kahi pae liʻiliʻi. Hiki i ka hopena o ka ikehu kahawai ke hana i ka electrode e ʻānai ʻia ma kahi kūloko. ʻO ke ʻano hana e hana ai ka hanana corrosion e hana ai i ka wā e hoʻohana ai i ka hoʻokuʻu ʻana o ka uila e hana i ka mīkini dimensional i ka mea i kapa ʻia ʻo ka mīkini uila uila. ʻO Edm kahi hoʻokuʻu uila i loko o kahi wai wai i loko o kahi pae voltage haʻahaʻa. Wahi a ke ʻano o ka electrode mea hana a me nā ʻano o ka neʻe pili ma waena o ka electrode mea hana a me ka workpiece, hiki ke hoʻokaʻawale ʻia ʻo edM i ʻelima mau ʻano. ʻO ka ʻoki ʻana o ka edM uea o nā mea conductive me ka hoʻohana ʻana i ka uea neʻe axially e like me ka electrode mea hana a me ka workpiece e neʻe ana ma ke ʻano a me ka nui i makemake ʻia; ʻO ka wili ʻana o Edm me ka hoʻohana ʻana i ka uea a i ʻole ke hana ʻana i ka huila wili conductive e like me ka electrode mea hana no keyhole a i ʻole ke hana ʻana i ka wili; Hoʻohana ʻia no ka mīkini ʻana i ke apo kaula, ke kaula plug gage [1], gear etc. Hana ʻana i nā lua liʻiliʻi, ka hoʻohui ʻana i ka ʻili, ka hoʻoikaika ʻana i ka ʻili a me nā ʻano hana ʻē aʻe. Hiki iā Edm ke hana i nā mea a me nā ʻano paʻakikī i paʻakikī ke ʻoki ʻia e nā ʻano hana maʻamau. ʻAʻohe ikaika ʻoki i ka wā o ka mīkini ʻana; ʻAʻole hana i ka burr a me ka ʻoki ʻana i ke awāwa a me nā hemahema ʻē aʻe; ʻAʻole pono e ʻoi aku ka paʻakikī o ka mea electrode mea hana ma mua o ka mea workpiece; Hoʻohana pololei i ka hana mana uila, maʻalahi e hoʻokō i ka automation; Ma hope o ka hana ʻana, hana ka ʻili i kahi papa metamorphosis, kahi i kekahi mau noi e pono e wehe hou ʻia; He mea pilikia ke hana me ka haumia uahi i hoʻokumu ʻia e ka hoʻomaʻemaʻe a ka hana ʻana o ka wai hana.