He aha ka uhi DACROMET?
ʻO ka uhi ʻana o DacrometʻO ia ka uhi metala zinc-aluminum i hoʻohana ʻia i nā metala ferrous (e like me ke kila, ka hao, a me nā mea hao ʻē aʻe) e pale iā lākou mai ka ʻino. Hoʻohana pinepine ʻia ka uhi ʻana ma o ka hoʻokomo ʻana i nā ʻāpana metala i loko o kahi paʻi wai i haku ʻia me ka zinc a me ka alumini paʻa maikaʻi, a laila e kālua iā lākou i nā wela kiʻekiʻe. ʻO kēia kaʻina hana i kahi paʻa metallurgical ma waena o ka mea i uhi ʻia a me ka mea kumu.
ʻO ka huaʻōlelo "Dacromet" he inoa inoa inoa, akā ua hoʻohana nui ʻia e wehewehe i kēia ʻano ʻenehana uhi. Haʻalele ia i ka ʻanuʻu pickling i mea nui loa i ke kaʻina hana electroplating maʻamau, pēlā e pale aku ai i ka hana ʻana o ka nui o ka wai ʻawaʻawa, chromium-, a me ka zinc. Loaʻa i ke kaʻina hana holoʻokoʻa ka hoʻokuʻu ʻana i ka wai ʻino ʻole, hoʻokō maoli i ka hana ʻōmaʻomaʻo a hoʻonohonoho i kahi pae hoʻomalu kaiapuni no ka ʻoihana lapaʻau. ʻAʻole i pane wale kēia hiʻohiʻona i ke kāhea no ka hoʻomohala hoʻomau honua, akā lanakila pū kekahi i ka makemake o nā mea kūʻai aku e nānā pono i ka mālama ʻana i ke kaiapuni.
Hāʻawi ka uhi ʻana i ke kūpaʻa corrosion maikaʻi loa, hiki ke kū i nā wela kiʻekiʻe, ʻaʻole hiki ke maʻalahi, e kūpono ia no nā ʻāpana kaʻa, nā lako, a me nā noi ʻē aʻe kahi e koi ʻia ai ka lōʻihi a me ke kūʻē ʻana i nā kaiapuni paʻakikī. Eia naʻe, pono e hoʻomaopopo ʻia hiki ke ʻokoʻa ke ʻano kikoʻī a me ke ʻano o ka noi, a ke hoʻomau nei ka noiʻi e hoʻomaikaʻi i kāna mau waiwai a hoʻonui i kāna mau hoʻohana.
♦ ʻO ka hopena pale o ka papa kiʻiʻoniʻoni Dacromet ma ke kapa kila
| 1. Pale Pale Hoʻokumu ka uhi ʻana o Dacromet i kahi pale kino e hoʻokaʻawale i ka substrate kila mai nā mea corrosive e like me ka moisture, oxygen, a me nā kemika. Ke pale nei kēia pale i kēia mau mea mai ka hoʻopili pololei ʻana me ke kila, no laila ke kāohi nei i ka hana ʻana o ka ʻōpala a me nā ʻano ʻino ʻē aʻe.
| 2. Hoʻomalu i ka ʻino Hana ʻia ka uhi Dacromet me ka zinc a me ka alumini, ʻoi aku ka ikaika o ka electrochemically ma mua o ka hao. Ma nā wahi i ʻoki ʻia a pohō paha ka uhi ʻana, hana kēia mau metala ma ke ʻano he anodes kaumaha, ʻoi aku ka maikaʻi o ka ʻino ʻana i ka hao. 'O ia ho'i, e 'ōpala lākou ma mua o ka hana 'ana o ke kila i lalo, a laila e ho'onui ai ke ola o ka mea kila.
| 3. Paʻa wela Paʻa ka uhi ʻana i nā wela kiʻekiʻe, kahi kūpono ia no nā noi kahi e ʻike ʻia ai nā ʻāpana i uhi ʻia i ka wela. Hiki i kēia kūpaʻa ke hoʻohana i nā ʻāpana i uhi ʻia ʻo Dacromet i nā kaiapuni kahi e hoʻohaʻahaʻa ai nā uhi ʻē aʻe.
| 4. Hoʻopili ʻO ke kaʻina hana bakena i ka wā o ka noi ʻana o Dacromet e hana i kahi paʻa metallurgical ikaika ma waena o ka uhi a me ka substrate. ʻO kēia adhesion ikaika e kōkua i ka pale ʻana i ka uhi mai ka ʻili a i ʻole ka ʻili ʻana ma lalo o nā kūlana maʻamau, e hōʻoiaʻiʻo ana i ka pale lōʻihi.
| 5. Kū'ē Kemika Hāʻawi nā uhi Dacromet i ke kūpaʻa maikaʻi i nā ʻano kemika, me nā waikawa a me nā alkalis, e hoʻonui hou ana i ko lākou hiki ke pale i nā wahi ʻoihana.
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ʻO ka hoʻokūkū koʻikoʻi o Dacrometaia i loko o kona pale ʻana i ka corrosion maikaʻi loa. Me ka mānoanoa o ka uhi o 8 microns wale nō, hiki iā ia ke hōʻike i ke kūpaʻa corrosion ma mua o 7-10 mau manawa o ka zinc electroplating kuʻuna i nā hoʻāʻo ʻana i ka paʻakai. ʻO kēia kūʻokoʻa kūʻokoʻa i ka wā e hana ai ka uhi ʻana o Dacromet i kahi koho kūpono no nā ʻāpana mea hana i nā wahi paʻakikī. ʻO ka paʻakai paʻakai erosion i loko o ka ʻenekinia moana a i ʻole ka corrosion kemika ma ke kahua ʻoihana, hiki iā Dacromet ke hāʻawi i kahi pale pale paʻa e hōʻoia i ka hana lōʻihi a paʻa o nā lako.
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