ʻO nā electrodes graphite mana kiʻekiʻe loa, ma ke pani ʻana i nā electrodes keleawe me nā electrodes graphite no ka hana ʻana i ka mold, hoʻopōkole nui i ke kaʻina hana hana mold, hoʻonui i ka huahua hana, a hoʻemi i ke kumukūʻai hana mold. I nā makahiki i hala iho nei, me ka hoʻolauna ʻana o nā mold kikoʻī a me nā mold kiʻekiʻe (me nā pōʻaiapuni mold pōkole), ua piʻi aʻe nā koi o ka poʻe no ka hana ʻana i ka mold. Ma muli o nā palena like ʻole o nā electrodes keleawe ponoʻī, ua emi iki ka hoʻokō ʻana i nā koi hoʻomohala o ka ʻoihana mold. ʻO Graphite, ma ke ʻano he mea electrode EDM, ua hoʻohana nui ʻia i ka ʻoihana mold ma muli o kona mau pono e like me ke kiʻekiʻe o ka mīkini, ke kaumaha māmā, ka hana wikiwiki ʻana, ka wikiwiki hoʻonui haʻahaʻa loa, ka pohō haʻahaʻa a me ka maʻalahi o ke kāhiko ʻana. He mea hiki ʻole ke pale aku e pani ia i nā electrodes keleawe.
1. Nā ʻano o nā mea hana ʻelektrika Graphite
Loaʻa i ka mīkini CNC ka wikiwiki hana wikiwiki, ka machinability kiʻekiʻe a me ka maʻalahi o ke kāhiko ʻana. ʻO ka wikiwiki hana o nā mīkini graphite he 3 a 5 mau manawa o nā electrodes keleawe, a ʻo ka wikiwiki hana pololei he mea kupaianaha loa. Eia kekahi, kiʻekiʻe loa kona ikaika. No nā electrodes ultra-kiʻekiʻe (50 a 90mm) a me ultra-thin (0.2 a 0.5mm), ʻaʻole lākou e maʻalahi i ka deformation i ka wā e hana ai. Eia kekahi, i nā hihia he nui, pono nā huahana e loaʻa kahi hopena texture maikaʻi loa. Pono kēia i ka wā e hana ai i nā electrodes, pono e hana ʻia lākou e like me nā electrodes kāne integral. Eia nō naʻe, aia nā ʻano kihi huna like ʻole i ka wā o ka hana ʻana o nā electrodes kāne integral. Ma muli o ka maʻalahi o ka ʻoki ʻana o ka graphite, hiki ke hoʻoponopono maʻalahi i kēia pilikia a hiki ke hoʻemi nui ʻia ka helu o nā electrodes, ʻaʻole hiki i nā electrodes keleawe ke hoʻokō.
2. Hoʻokumu wikiwiki ʻana o EDM, hoʻonui iki ʻia ka wela a me ka pohō haʻahaʻa: Ma muli o ka conductivity uila maikaʻi o ka graphite ma mua o ke keleawe, ʻoi aku ka wikiwiki o kona wikiwiki hoʻokuʻu ma mua o ke keleawe, ʻo 3 a 5 mau manawa o ke keleawe. Eia kekahi, hiki iā ia ke kū i kahi au nui i ka wā o ka hoʻokuʻu ʻana, ʻoi aku ka maikaʻi no ka mīkini hoʻokuʻu uila ʻino. I kēia manawa, ma lalo o ka nui like, ʻo ke kaumaha o ka graphite he 1/5 mau manawa o ke keleawe, kahi e hoʻemi nui ai i ka ukana o EDM. Loaʻa iā ia nā pono nui i ka hana ʻana i nā electrodes nui a me nā electrodes kāne integral. ʻO ka mahana sublimation o ka graphite he 4200 ℃, ʻo ia hoʻi he 3 a 4 mau manawa o ke keleawe (ʻo ka mahana sublimation o ke keleawe he 1100 ℃). I nā mahana kiʻekiʻe, loli
ʻElekoda graphite mana kiʻekiʻe loa
He ʻano liʻiliʻi loa kona (1/3 a 1/5 o ke keleawe ma lalo o nā kūlana uila like) a ʻaʻole palupalu. Hiki ke hoʻoili ʻia ka ikehu hoʻokuʻu i ka ʻāpana hana me ka maikaʻi a me ka hoʻohana haʻahaʻa. Ma muli o ka piʻi ʻana o ka ikaika o ka graphite i nā mahana kiʻekiʻe, hiki iā ia ke hōʻemi pono i ka nalowale o ka hoʻokuʻu ʻana (ʻo ka nalowale o ka graphite he 1/4 o ke keleawe), e hōʻoiaʻiʻo ana i ka maikaʻi o ka hana ʻana.
3. Māmā ke kaumaha a me ke kumukūʻai haʻahaʻa: I ke kumukūʻai hana o kahi hoʻonohonoho o nā mold, ʻo ka manawa mīkini CNC, ka manawa EDM, a me ke komo ʻana o ka electrode o nā electrodes ka hapa nui o ke kumukūʻai holoʻokoʻa, a ua hoʻoholo ʻia kēia mau mea a pau e ka mea electrode ponoʻī. Ke hoʻohālikelike ʻia me ke keleawe, ʻo ka wikiwiki o ka mīkini a me ka wikiwiki EDM o ka graphite he 3 a 5 mau manawa o ke keleawe. I kēia manawa, ʻo ka hiʻohiʻona o ka komo liʻiliʻi a me ka hana ʻana o ka electrode graphite integral hiki ke hōʻemi i ka helu o nā electrodes, a laila e hōʻemi ana i ka hoʻohana ʻana i nā mea a me ka manawa mīkini o nā electrodes. Hiki i kēia mau mea a pau ke hōʻemi nui i ke kumukūʻai hana o nā mold.
2. Nā Pono a me nā ʻAno o ka Hana ʻana i nā Mechanical a me nā Uila o nā Graphite Electrodes
1. Ka hana ʻana o nā electrodes: Hoʻohana nui ka hana ʻana o nā electrodes graphite ʻoihana i nā mīkini hana wikiwiki no ka hana ʻana. Pono nā mīkini hana e kūpaʻa maikaʻi, me nā neʻe ʻekolu-axis like a paʻa me ka ʻole o ka haʻalulu. Eia kekahi, pono e like ka pololei o ka wili ʻana o nā ʻāpana e like me ke koʻokoʻo nui me ka maikaʻi. Hiki ke hana ʻia ka electrode ma nā mīkini hana maʻamau, akā ʻokoʻa ke kaʻina hana o ke kākau ʻana i ke ala o ka mea hana mai nā electrodes keleawe.
2. ʻO nā electrodes graphite machining uila EDM he mau electrodes kalapona. Ma muli o ka conductivity uila maikaʻi o ka graphite, hiki iā ia ke mālama i ka manawa nui i ka machining hoʻokuʻu uila, ʻo ia kekahi o nā kumu e hoʻohana ʻia ai ka graphite ma ke ʻano he electrode.
3. Nā ʻano hana o nā electrodes Graphite: He paʻakikī a palupalu ka graphite ʻoihana, e hōʻeha nui ana i nā mea hana i ka wā o ka mīkini CNC. Ma ke ʻano laulā, ua ʻōlelo ʻia e hoʻohana i nā mea hana i uhi ʻia me ka alloy paʻakikī a i ʻole ka daimana. I ka wā e hana ana i ka graphite maʻamau, hiki ke kau pololei ʻia ka mea hana ma luna a ma waho o ka workpiece. Eia nō naʻe, i ka wā o ka mīkini hoʻopau, i mea e pale ai i ka chipping a me ka nahā ʻana, hoʻohana pinepine ʻia kahi mea hana māmā a me ke ʻano hele wikiwiki.
Ma ke ʻano laulā, ʻaʻole pinepine ka haki ʻana o ka graphite i ka wā e emi ai ka hohonu o ka ʻoki ʻana ma mua o 0.2mm, a hiki nō hoʻi ke loaʻa kahi ʻano maikaʻi o ka ʻili o ka paia ʻaoʻao. He nui ka lepo i hana ʻia i ka wā o ka mīkini CNC o nā electrodes graphite a hiki ke komo i loko o nā ala alakaʻi, nā wili alakaʻi a me nā spindle o ka mīkini hana, a pēlā aku. Pono kēia i ka mīkini hana graphite e loaʻa nā mea hana like no ka hana ʻana me ka lepo graphite, a pono hoʻi e maikaʻi ka hana sila o ka mīkini no ka mea he mea ʻawahia ka graphite. ʻO ka pauka graphite kahi mea i maʻalahi loa i nā hopena kemika. Hoʻololi kona resistivity i nā ʻano like ʻole, ʻo ia hoʻi, ʻokoʻa kona waiwai kū'ē. Eia nō naʻe, aia kekahi mea e mau ana: ʻo ka pauka graphite kekahi o nā mea alakaʻi maikaʻi ʻole. Inā mālama ʻia ka pauka graphite i loko o kahi mea insulating me ka ʻole o ka hoʻōki ʻana, e like me ke kaula lahilahi, e hoʻomāʻū ʻia nō ia. Akā he aha ka waiwai kū'ē? ʻAʻohe helu paʻa no kēia waiwai, no ka mea, ʻokoʻa ka maikaʻi o ka pauka graphite, a ʻokoʻa hoʻi ka waiwai kū'ē o ka pauka graphite i hoʻohana ʻia i nā mea like ʻole a me nā ʻano like ʻole.
ʻAʻole paha ʻoe e ʻike he hoʻohana alakaʻi ko ka pauka graphite maʻemaʻe kiʻekiʻe:
Ma keʻano laulā, he mea hoʻokaʻawale ka laholio. Inā pono ka conductivity uila, pono e hoʻohui i nā mea conductive. Loaʻa i ka pauka graphite ka conductivity uila maikaʻi loa a me nā waiwai demolding lubricating. Hana ʻia ka graphite i pauka graphite, nona nā waiwai lubricating a me conductive maikaʻi loa. ʻO ke kiʻekiʻe o ka maʻemaʻe o ka pauka graphite, ʻoi aku ka maikaʻi o kāna hana conductive. Pono nā hale hana huahana laholio kūikawā he nui i ka laholio conductive. A laila, hiki ke hoʻohui ʻia ka pauka graphite i ka laholio e alakaʻi i ka uila? ʻAe ka pane, akā aia kekahi nīnau: He aha ka hapa o ka pauka graphite i loko o ka laholio? Hoʻohana kekahi mau ʻoihana i kahi hapa o ka ʻoi aku ma mua o 30%, kahi i hoʻopili ʻia i nā huahana laholio pale ʻaʻahu e like me nā kaila kaʻa, a pēlā aku. Aia kekahi mau hale hana laholio kūikawā e hoʻohana ana i kahi hapa o 100%. ʻO ia mau huahana wale nō ke alakaʻi i ka uila. ʻO ke kumu nui o ka conductivity, ʻaʻole hiki ke hoʻopau ʻia ke alakaʻi, e like me ka uea. Inā hoʻopau ʻia ma waena, ʻaʻole ia e uila ʻia. ʻO ka pauka graphite conductive i loko o ka laholio conductive ka mea alakaʻi Inā ua ālai ʻia ka pauka graphite e ka laholio insulating, ʻaʻole ia e alakaʻi hou i ka uila. No laila, inā haʻahaʻa loa ka hapa o ka pauka graphite, ʻaʻole paha e maikaʻi ka hopena conductive.
He mea koʻikoʻi loa ka pauka graphite i nā hopena kemika. Hoʻololi kona resistivity i nā ʻano like ʻole, ʻo ia hoʻi, ʻokoʻa kona waiwai kūʻē. Eia nō naʻe, hoʻokahi mea e mau ana: ʻo ka pauka graphite maʻemaʻe kiʻekiʻe kekahi o nā mea alakaʻi maikaʻi ʻole. Inā mālama ʻia ka pauka graphite i loko o kahi mea insulating me ke keakea ʻole, e like me ke kaula lahilahi, e hoʻomāʻū ʻia nō ia. Akā he aha ka waiwai kūʻē? ʻAʻohe helu paʻa no kēia waiwai, no ka mea, ʻokoʻa ka maikaʻi o ka pauka graphite, a ʻokoʻa nō hoʻi ka waiwai kūʻē o ka pauka graphite i hoʻohana ʻia i nā mea like ʻole a me nā ʻano like ʻole.
Ka manawa hoʻouna: Mei-09-2025