Ua ʻike nui ʻia ke kila kila no kona kūpaʻa, ikaika, a ʻo ka mea nui loa, ʻo iapale ʻino. ʻO kēia waiwai ka mea i koho ʻia no nā ʻoihana lehulehu, mai ke kūkulu ʻana a me ka hoʻoili ʻana i ka meaʻai a hiki i ka hana kai a me ka hana kemika. Akā, he aha ka mea e hāʻawi ai i ke kila kila i kona kūpaʻa ʻana i ka pala a me ka degradation? A pehea e hiki ai iā ʻoe ke hōʻoia i ka hana ʻana o kāu kila kila e like me ka mea i manaʻo ʻia ma nā wahi like ʻole?
Ma kēia ʻatikala, wehewehe mākou i ka ʻepekema ma hope o ke kūpaʻa ʻana o ke kila kila, nā ʻano like ʻole i loaʻa, a pehea e koho ai i ka papa kūpono no kāu noi kikoʻī.
He aha ka mea e pale ai i ka ʻinoʻino?
ʻO ke kī i ka pale ʻana i ka corrosion o ke kila kila ma kānamaʻiʻo chromium. Loaʻa i nā kila kuhili ʻole he 10.5% chromium ma lalo o ka liʻiliʻi, e hoʻopili me ka oxygen i ka lewa e hana i kahi.papa hāmauo ka chromium oxide ma ka ili. Mālama kēia ʻāpana ʻike ʻole, hoʻoponopono iā ia iho i ka metala ma lalo mai ka oxidation a me ka corrosion.
ʻOi aku ka kiʻekiʻe o ka chromium maʻiʻo, ʻoi aku ka maikaʻi o ka pale ʻana i ka corrosion. Nui nā māka kila kuhiliʻole pū kekahi me nā mea hoʻohui like ʻolenikela, molybdenum, anitrogene hoʻonui i kēia pale pale, ʻoi aku hoʻi i nā kaiapuni koʻikoʻi.
Nā ʻano maʻamau o ka ʻinoʻino a me ke ʻano kila kuhili ʻole
ʻAʻole paʻa loa ke kila kila i nā ʻano ʻino a pau. ʻO ka hoʻomaopopo ʻana i nā ʻano maʻamau e kōkua i ke koho ʻana i ka papa kūpono.
1. ʻAiʻino nui
ʻO kēia ka ʻinoʻino like ʻole e kū mai ana ma luna o ka ʻili i ka wā e ʻike ʻia ai i nā kaiapuni ʻakika a i ʻole nā caustic. Paipai maikaʻi nā papa e like me 304 a me 316 i kēia ʻano.
2. ʻAi ʻAha
Hana ʻia ma nā wahi waiwai chloride e like me ka wai kai a i ʻole nā wahi loko. ʻO nā māka i loaʻa i ka molybdenum e like me316 or 904Lhāʻawi i ke kūʻē maikaʻi.
3. ʻAi ʻAi ʻAha
Hana ʻia ma nā wahi paʻa kahi hiki ʻole i ka oxygen ke hiki i ka ʻili e mālama i ka papa passive. ʻO ke koho ʻana i nā māka haʻahaʻa kalapona a i ʻole kiʻekiʻe-alloy hiki ke pale i kēia.
4. ʻO ka māhā ʻinoʻino
ʻO kēia ka hui pū ʻana o ke koʻikoʻi mechanical a me kahi kaiapuni corrosive. Hoʻohana pinepine ʻia nā mea kila kila ʻole Duplex a i ʻole nā mea hao nickel kiʻekiʻe e kūʻē i kēia ʻano.
Ke hoʻohālikelike ʻana i nā papa kila kila kila kaulana
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304 Ke kila kila: Kūleʻa ʻino maʻamau maikaʻi loa, kūpono no nā kaiapuni i loko a i ʻole nā kaiapuni haʻahaʻa.
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316 Ke kila kila: Loaʻa i ka molybdenum, kūpono ia no ke kai, lāʻau lapaʻau, a me nā noi hana meaʻai.
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430 Ke kila kila: He emi ke kumu kūʻai akā he haʻahaʻa haʻahaʻa ke kūpaʻa corrosion, hoʻohana nui ʻia i nā noi i loko.
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904L kila kila: He kila kila austenitic kiʻekiʻe me ke kūʻē kūʻē i nā ʻakika ikaika a me nā chlorides.
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Duplex 2205: Hāʻawi i ka ikaika kiʻekiʻe a me ke kū'ē i ke koʻikoʻi corrosion māhā.
At sakysteel, Hāʻawi mākou i kahi ākea o nā māka kila kila me nā mea hoʻohui kemika i hōʻoia ʻia a hoʻāʻo ʻia ke kūpaʻa corrosion, e kōkua ana i nā mea kūʻai aku ma ke ao holoʻokoʻa e ʻike i ka hoʻokūkū maikaʻi loa no kā lākou mau papahana.
Nā mea e hoʻoikaika ai i ka pale ʻana i ka ʻino
ʻO kekahi mau kumu o waho e pili ana i ka hana ʻana o ke kila kila ma ka lawelawe:
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Mahana: Hiki i nā wela kiʻekiʻe ke hoʻolalelale i ka ʻinoʻino, ʻoi aku ka nui ma nā wahi ʻakika a i ʻole chloride-waiwai.
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Hōʻike i nā Chloride: He mea ʻino loa nā iona chloride a hiki ke wāwahi i ka papa passive.
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Kaʻakika a me ka alkalinity: Hiki i nā pae pH kiʻekiʻe ke hoʻololi i nā kila kila kila kiʻekiʻe.
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Hoʻopau ʻili: ʻOi aku ka maikaʻi o ka hoʻopau ʻana (e like me ka No. 4 a i ʻole 2B) i ka pale ʻana i ka ʻino ma mua o nā ʻaoʻao ʻeleʻele a i ʻole ʻia.
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Ka malama ana: Hoʻomaʻemaʻe mau ka pale ʻana i nā mea haumia mai ka wāwahi ʻana i ke kiʻi pale.
ʻO ke koho kūpono, ka hoʻokomo ʻana, a me ka mālama ʻana e hiki ke hoʻolōʻihi i ke ola o ke kila kila ma nā hoʻonohonoho corrosive.
Nā noi e hilinaʻi ana i ka pale ʻana i ka ʻino
Pono ke kila kila ma nā ʻoihana kahi e alakaʻi ai ka corrosion i nā pōʻino palekana, downtime, a i ʻole contamination. Aia nā laʻana maʻamau:
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ʻenehana moana: No nā lako waʻa, nā lāʻau, a me nā paepae waho
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ʻO ka hana kemika: No na reactors, tanks, and pipelines
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Meaʻai a mea inu: I loko o ka paipu maʻemaʻe a me nā lako kīhini
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Kūkulu: ʻOi loa no nā facades waho a me nā hale kahakai
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ʻO ka lāʻau lapaʻau a me ka lāʻau lapaʻau: Ma kahi e koʻikoʻi ai ka maʻemaʻe a me ke kūʻē ʻana i nā kemika
sakysteelhāʻawi i nā mea kila kila i hōʻoia ʻia e kū ana i nā kūlana o ka honua, e hoʻolilo iā mākou i hoa hilinaʻi no ke koi ʻana i nā noi pili i ka corrosion.
Pehea e hoʻomaikaʻi ai i ka pale ʻana i ka ʻino
Hiki i nā māka kū'ē i ka corrosion ke pōmaikaʻi mai ka mālama ʻana:
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E hoʻohana i ka papa kūponono kou kaiapuni kiko'ī
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E hōʻoia i ka wili kūponoe pale i ka sensitization a me ka corrosion intergranular
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E noi i nā lāʻau lapaʻau passivatione hoʻonui i ka pale pale ma hope o ka mīkini a i ʻole ka hana ʻana
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Hōʻalo i ka pilina me ke kila kalaponai ka wā o ka lawelawe ʻana a i ʻole ka mālama ʻana i mea e pale ai i ka hoʻopōʻino
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E hoʻomaʻemaʻe maume nā mea hoʻomaʻemaʻe non-chloride e mālama i ka papa passive
E hana pū me nā mea hoʻolako ʻike likesakysteele hōʻoia i kāu mau mea ʻaʻole wale ke kiʻekiʻe kiʻekiʻe akā ua mālama pono ʻia a mālama ʻia.
Ka hopena
ʻO ka hoʻomaopopo ʻana i ke kūpaʻa corrosion o ke kila kila ke kī i ke koho ʻana i ka mea kūpono no kāu papahana. Mai ka papa passive i hoʻokumu ʻia e ka chromium a i ka ikaika hoʻohui o ka molybdenum a me ka nickel, ua hana ʻia ke kila kila e hana i nā wahi paʻakikī loa.
Inā ʻoe e kūkulu nei i kahi laina hana ʻai meaʻai a i ʻole ke kāhiko ʻana i kahi kahua hoʻoheheʻe kai waho, ʻo ke koho ʻana i ka pae kila stainless kūpono e hōʻoia i ka hilinaʻi lōʻihi, palekana, a me ka pono.
No nā huahana kila kila kila kiʻekiʻe i kākoʻo ʻia e ka ʻike loea a me ka lawelawe honua, hilinaʻisakysteel—kāu mea hāʻawi hoʻonā i ka corrosion.
Ka manawa hoʻouna: Iune-27-2025