I ka wā o ka hoʻoili mana, he mea nui ka hale kiaʻi hao. I ka wā o ka hana ʻana i nā huahana kila hale kiaʻi hao, ʻo ke kaʻina hana o ka hot-dip galvanizing e hoʻohana maʻamau ʻia ma luna o ka ʻili e pale i ka ʻili o nā huahana kila mai ka ʻino o ka ea o waho a me nā ʻano kaiapuni. Hiki i ka hoʻohana ʻana i ke kaʻina hana galvanizing wela ke hoʻokō i ka hopena anti-corrosion maikaʻi. Me nā koi kiʻekiʻe o ka hoʻoili mana, ʻoi aku ka kiʻekiʻe o nā koi no ke kaʻina hana o nā huahana kila galvanized.
（1） Kumu kumu o ka hoʻoheheʻe wela wela
ʻO ka galvanizing wela wela, ʻike ʻia hoʻi ʻo ka hot dip galvanizing, ʻo ia kekahi o nā ala ʻoi loa o ka uhi ʻana no ka pale ʻana i ka substrate kila. I loko o ka zinc wai, ma hope o ka hoʻomaʻamaʻa kino a me ke kemika o ka mea hana kila, ua hoʻokomo ʻia ka mea hana kila i loko o ka zinc hoʻoheheʻe me ka mahana o 440 ℃ ~ 465 ℃ a i ʻole ke kiʻekiʻe no ka mālama ʻana. Hoʻopili ke pani kila me ka zinc hoʻoheheʻe ʻia e hana i kahi papa gula Zn Fe a me kahi papa zinc maʻemaʻe a uhi i ka ʻili holoʻokoʻa o ka mea hana kila. He paʻakikī ko ka ʻili galvanized, hiki ke kū i ka friction nui a me ka hopena, a he hui maikaʻi me ka matrix.
ʻAʻole kēia ʻano plating wale nō ka pale ʻana o ka corrosion o ka galvanizing, akā loaʻa pū kekahi Zn Fe alloy layer. Loaʻa iā ia ke kūpaʻa corrosion ikaika ʻaʻole hiki ke hoʻohālikelike ʻia me ka galvanizing. No laila, ʻoi aku ka maikaʻi o kēia ʻano plating no nā ʻenehana corrosive ikaika e like me ka waikawa ikaika, alkali a me ka noe.
（2） Nā hiʻohiʻona hana o ka galvanizing wela
Loaʻa iā ia kahi papa zinc maʻemaʻe mānoanoa a paʻa i ka ʻili kila, hiki ke pale aku i ka hoʻopili ʻana o ka substrate kila me kekahi hopena corrosion a pale i ka substrate kila mai ka corrosion. I ka lewa maʻamau, ua hoʻokumu ʻia kahi ʻāpana zinc oxide lahilahi a paʻakikī ma ka ʻili o ka papa zinc, he mea paʻakikī ke hoʻoheheʻe ʻia i ka wai, no laila ke pāʻani nei ia i kekahi kuleana i ka pale ʻana i ka matrix kila. Inā hana ka zinc oxide a me nā mea ʻē aʻe i ka lewa i nā paʻakai zinc insoluble, ʻoi aku ka maikaʻi o ka hopena anti-corrosion.
Ma hope o ka galvanizing wela, loaʻa i ke kila kahi ʻāpana Zn Fe alloy, he paʻa a he kūʻokoʻa kūʻokoʻa kūʻokoʻa i ka lewa paʻakai moana a me ka lewa ʻoihana. Ma muli o ka hoʻopaʻa paʻa ʻana, hiki ke hoʻopili ʻia ʻo Zn Fe a me ke kūpaʻa ikaika. Ma muli o ka ductility maikaʻi o ka zinc a ua hoʻopili paʻa ʻia kona ʻāpana paʻa i ka substrate kila, hiki ke hana ʻia ka mea hana wela wela ma ke kuʻi anu, ka ʻōwili ʻana, ke kaha kiʻi uea, ke kuʻi, a me nā mea ʻē aʻe me ka ʻole o ka hōʻino ʻana i ka uhi zinc.
Ma hope o ka galvanizing wela, ua like ka mea hana kila me kahi hoʻomaʻamaʻa annealing, hiki ke hoʻomaikaʻi maikaʻi i nā waiwai mechanical o ka substrate kila, hoʻopau i ke koʻikoʻi o ka mea hana kila i ka wā o ka hoʻokumu ʻana a me ke kuʻi ʻana, a hiki ke hoʻohuli i ka mea hana kila.
ʻO ka ʻili o ka mea hana kila ma hope o ka galvanizing wela he mālamalama a nani. ʻO ka papa zinc maʻemaʻe ka papa zinc plastic loa i ka galvanizing hot-dip. Ua like kona mau waiwai me ka zinc maʻemaʻe, a he ductility kona, no laila hiki ke maʻalahi.
Ka manawa hoʻouna: ʻAukake-26-2022
