Kāhea ʻia ka pā kila i uhi ʻia i ka kala pā kila i uhi ʻiaa i ʻole ka pā kila i uhi mua ʻia. Ma ke ʻano he hana hoʻomau no nā coils, hiki ke hoʻokaʻawale ʻia nā papa kila kala i ʻelua mau ʻano: electro-galvanized a me hot-dip galvanized.
I ka manawa like, ʻo ka electro-galvanizing kahi ala e hana ai i ka pena gula-plated-"layer zinc metal a i ʻole zinc alloy" ma o ka electroplating.
Hot-dip galvanizing, ʻike ʻia hoʻi ʻo ka hot-dip galvanizing, ʻo ia ke kaomi ʻana i nā huahana metala e pono ai ka mālama ʻana i loko o ka metala zinc i hoʻoheheʻe ʻia e hana i ke ʻano o ka uhi metala mālama. Ke hoʻohālikelike ʻia me ka electroplating, ʻoi aku ka mānoanoa o ka uhi wela wela; ma lalo o ke kaiapuni hoʻokahi, ua lōʻihi kona ola.
ʻO ka ʻinoʻino o ka papa galvanized wela ma ka ʻili kila ua like ia me ka zinc maʻemaʻe. ʻO ke kino o ka zinc i ka lewa ua like ia me ke kaʻina hana corrosion o ke kila ma lalo o nā kūlana lewa. Hiki mai ka ʻino ʻana o ke kemika, hiki ke ʻino electrochemical ma ka ʻili zinc, a hiki mai ka condensation kiʻiʻoniʻoni wai. I loko o kahi ea kūʻokoʻa a nāwaliwali paha, ʻo nā huahana corrosion i hana ʻia e ka papa kila galvanized he mau mea hiki ʻole ke hoʻoheheʻe ʻia (zinc hydroxide, zinc oxide, a me ka zinc carbonate). E hoʻokaʻawale ʻia kēia mau huahana e ka waiho ʻana a hana i kahi ʻāpana lahilahi.
ʻO ka maʻamau hiki ke hiki i kahi mānoanoa o 8μm". He mānoanoa ko kēia ʻano kiʻiʻoniʻoni, akā ʻaʻole hiki ke hoʻoheheʻe ʻia i ka wai, a he paʻa paʻa. No laila, hiki iā ia ke pāʻani i kahi pale ma waena o ka lewa a me ka pepa galvanized. Kāohi i ka ʻino hou aʻe. Hoʻopilikia ʻia ka papa galvanized i ka wā o ka mālama ʻana, a ʻike ʻia kekahi hapa o ka ʻili kila i ka lewa.
I kēia manawa, hana ʻia ka zinc a me ka hao i kahi pākahi liʻiliʻi. ʻOi aku ka haʻahaʻa o ka zinc ma mua o ka hao. E like me ka anode, aia ka zinc i kahi hopena mālama anode kūikawā ma ka pā kila kila e pale aku i ka corrosion o ka pā kila.
ʻO ka papa i uhi ʻia i ke kala he ʻano uhi wai, i hoʻohana ʻia e hoʻomaʻemaʻe i ka ʻili metala ma ka pulupulu a i ʻole ka wili. Ma hope o ka hoʻomehana ʻana a me ka hoʻōla ʻana, hiki ke loaʻa kahi kiʻi pena me ka mānoanoa like.
Ka manawa hoʻouna: Nov-02-2021