Uhi electrophoreticUa like ia me nā ʻano hana uhi ʻē aʻe. Pono e mālama ʻia nā ʻāpana i uhi ʻia ma mua o ka uhi ʻana. He hana koʻikoʻi ka mālama ʻana i ka ʻili e pono ai ke hana ma mua o ka uhi ʻana. ʻOkoʻa nā ʻano hana uhi, nā mea like ʻole a me ko lākou mau kūlana ʻili, no laila ʻaʻole like nā kaʻina hana a me nā ʻano hana mālama ʻili e pono ai. ʻAʻole wale nā kaʻina hana mālama ʻili like ʻole a me ka maikaʻi o ka mālama ʻana e hoʻopilikia nui i ka maikaʻi o ka uhi ʻana, akā ʻoi aku ka hopena o ke kumukūʻai mālama ʻili. No laila, ke hana mākou i ka hoʻolālā loea, pono mākou e koho i ke ʻano hoʻonohonoho, ke ʻano o ka mea a me ke ʻano o ka ʻili o nā ʻāpana i uhi ʻia, a me ke kaʻina hana mālama ʻili a me ke ʻano me ka pili ikaika, ka hopena mālama maikaʻi a me ke kumukūʻai haʻahaʻa e like me ka hiki.
No ke aha he kaʻina hana hoʻomākaukau mua ʻia ka electrophoresis?
I ke kaʻina hana hoʻomākaukau mua o ka electrophoresis, aia ka laulima like ʻana o ka degreasing, ka wehe ʻana i ka popo, ka phosphating, ka hoʻoponopono ʻana i ka ʻili a me nā kaʻina hana ʻē aʻe. Hiki ke ʻōlelo ʻia he mea nui ka pretreatment i ka uhi electrophoretic, e pili ana i ke kūpaʻa o ka ʻauʻau pena electrophoretic ma hope o ka electrophoresis a me ke ʻano o ka ʻili uhi ma ka ʻili o ka workpiece.
I mea e loaʻa ai ke kūpaʻa a me ke kūpaʻa ʻana i ka pala o ke kiʻiʻoniʻoni uhi o ka mea hana electrophoretic, hoʻohana ʻia ka mālama ʻana i ka phosphating ma ke ʻano he mālama mua ʻana o ka uhi. ʻO ka mālama ʻana i ka phosphate (ʻike ʻia hoʻi ʻo ka mālama kemika phosphate) he ʻenehana (phosphating film) e hoʻohana ana i ka hopena dissociation (equilibrium) o ka waikawa phosphoric e hoʻoheheʻe i nā paʻakai metala phosphate insoluble ma luna o ka ʻili o nā substrates metala i hoʻomaʻemaʻe ʻia (degreased). ʻO ka hana o ke kiʻiʻoniʻoni phosphating ka hoʻomaikaʻi ʻana i ka pipili a me ke kūpaʻa ʻana i ka pala o ke kiʻiʻoniʻoni uhi (electrophoretic coating) i kau ʻia ma luna.
E pili ana i ka hoʻopili ʻana, ua hoʻoheheʻe iki ʻia nā kristal o ka ʻili phosphide i loaʻa i loko o ka ʻili metala, a maikaʻi ka hoʻopili ʻana o nā kristal. Eia kekahi, ua hoʻonui ʻia ka ʻili ma muli o ka ʻokoʻa o ka ʻili o nā kristal he nui, a ua hoʻomaikaʻi ʻia ka hoʻopili ʻana o ka ʻili uhi. A laila, me ka hoʻomaikaʻi ʻana o ka hoʻopili ʻana o ka ʻili uhi, ua pale ʻia ke komo ʻana o nā mea hana corrosion, a ua hoʻomaikaʻi ʻia ke kūpaʻa ʻana i ka corrosion (ʻoi aku ka hiki ke pale ʻia ka hoʻonui ʻia ʻana o ka corrosion ma lalo o ka ʻili pena).
E pehu a popo ka uhi i loko o kahi manawa pōkole me ka ʻole o ka phosphating. Hiki ka wai a me ka ea e hele ana ma o ka ʻili uhi i ka ʻili o ka mea hana e hana i ka popo ʻulaʻula a pehu i ka ʻili pena. Hiki ka wai a me ka ea e hele ana ma o ka ʻili uhi i ka pepa kila galvanized e hana i ka popo keʻokeʻo, kahi e hana pū ai me ka ʻili uhi e hana i ke kopa metala. He mau manawa nui aʻe, i ʻoi aku ka ikaika o ka pehu ʻana o ka ʻili uhi. ʻO ka ʻili phosphating kahi ʻili hiki ʻole ke hoʻoheheʻe ʻia i hana ʻia ma luna o ka ʻili metala e ka hopena kemika. Ma muli o kona hoʻopili maikaʻi ʻana (kino) a me ke kūpaʻa kemika, ua mālama ʻia ʻo ia he substrate uhi anti-rust paʻa.
I mea e loaʻa ai kahi kiʻiʻoniʻoni phosphating maikaʻi loa a paʻa hoʻi a hōʻoia i kona pipili a me ke kūpaʻa i ka pala, he mea nui loa ka hoʻokele ʻana o ka pretreatment. I ka manawa like, pono e loaʻa kahi ʻike maikaʻi o ke ʻano hana kumu a me nā mea o ka mālama ʻana i ka phosphating.
Ka manawa hoʻouna: Iulai-08-2022
