ʻO ka paipu kila kila ke ʻano o ke kila cylindrical lōʻihi.Hoʻohana ʻia kāna ʻano o ka noi ma ke ʻano he pipeline no ka lawe ʻana i ka wai.Hoʻohana nui ʻia ia i nā pipeline hoʻoili ʻenehana e like me ka petroleum, ʻoihana kemika, mālama olakino, meaʻai, ʻoihana māmā, nā mea hana mechanical a me nā mea hana mechanical.Hana ʻia nā paipu kila kila me ka ʻakika a me ka wela ma o ka hoʻomehana ʻana, ka perforation, ka nui, ka ʻōwili wela a me ka ʻoki ʻana.ʻOiaʻiʻo, ʻaʻole hiki ke pale ʻia kahi huahana mai ka corrosion ke ʻole ia i kekahi mau hihia koʻikoʻi.Inā ʻino kā mākou pā kila kila, pili paha ia i kona hoʻohana maʻamau.No laila, pono mākou e hana i kekahi mau mea pale e pale aku i kēia kūlana.I kēia manawa, e hoʻomaopopo mua kākou i nā kumu e hoʻopōʻino ai i nā papa kila kila?
(1) Electrochemical corrosion:ʻO ka ʻōpala i hana ʻia e ka hoʻopili ʻana ma waena o ka pā kila kila a me nā ʻāpana kila kalapona, a laila hoʻokumu i kahi cell galvanic me ka corrosive medium, kahi e hoʻohua ai i ka electrochemical corrosion.Inā ʻaʻole maikaʻi ka hopena pickling passivation, ʻaʻole like a lahilahi paha ke kiʻi passivation ma ka ʻili o ka pā, a maʻalahi hoʻi e hana i ka corrosion electrochemical, ʻoki ʻoki, splash a me nā mea ʻē aʻe e pili ana i ka pā. a laila, e hana i ka galvanic cell me ka corrosive medium, ka hopena i ka electrochemical corrosion.ʻAʻole maʻemaʻe ka hoʻomaʻemaʻe ʻana a me ka hoʻomaʻemaʻe passivation, e hopena i nā huahana corrosion kemika ma waena o ke koena pickling a me ke koena passivation a me ka pā, a laila ʻo electrochemical corrosion me ka pā.
(2) Ma lalo o kekahi mau kūlana, nui ka lepo momona, ka lepo, ka waikawa, ka alkali, ka paʻakai, a me nā mea ʻē aʻe i hoʻopili ʻia i ka ʻili o nā papa kila kuhiliʻole e hoʻohuli ʻia i loko o ka media corrosive, kahi e hoʻopili kemika me kekahi mau mea i loko o nā papa, e hopena i ka ʻino a me ka ʻōpala.ʻAʻole lawa ka maʻemaʻe o ka hoʻomaʻemaʻe, pickling a me ka passivation, ka hopena i ka paʻa ʻana o ke koena wai, kahi e hoʻopau pono ai i ka pā.Hoʻopili ʻia ka ʻili o ka pā, e alakaʻi ana i ka luku ʻana i ka kiʻiʻoniʻoni passive, no laila ua hoʻemi ʻia ka hiki ke pale ʻia o ka pā, a ua maʻalahi ka pane ʻana me ka media kemika.
Ka manawa hoʻouna: ʻAukake-05-2022