He māmā ke kaumaha, he hiʻohiʻona nani a me ke kūpaʻa corrosion maikaʻi.Hoʻohana nui ʻia ia i ka ʻoihana hoʻolaha, ʻoihana kūkulu hale, ʻoihana mea hana hale, ʻoihana uila uila, ʻoihana lako a me ka ʻoihana kaʻa.Wahi a ka hoʻohana ʻokoʻa o ka hoʻohana ʻana, ua māhele ʻia i ʻekolu mau ʻano: hot-dip galvanized substrate, hot-dip aluminum-zinc substrate a me electro-galvanized substrate.Ma muli o nā kaiapuni like ʻole, ʻokoʻa ke ola lawelawe.I kēia lā, e nānā pono mākou i nā mea e pili ana i ke ola lawelawe o nā papa kala i uhi ʻia?
Ma ke kumu o ka galvanizing, mālama ʻia nā coils i uhi ʻia me ka hoʻomaʻemaʻe ʻili a me ke kiʻi hoʻololi kemika, a laila uhi ʻia me ka primer (e kālele ana i ka adhesion a me ka anti-corrosion) a me ka topcoat (e nānā ana i ka pale ʻana i ka wā a me ka hoʻonaninani), a me ʻelua mau uhi kūlohelohe. .ʻO ka pale pale e pale pono i ke komo ʻana o nā molekole wai a me nā media corrosive, a hiki iā ia ke pale aku i ka luku a me ka decomposition o ke kukui kūlohelohe e like me nā kukui ultraviolet.Pono ka mānoanoa o ka uhi i ka mānoanoa kiʻiʻoniʻoni i ʻōlelo ʻia e kiʻi i kahi kiʻi pale pale paʻa, hoʻemi i ka wai a me ka oxygen permeability, a pale i ka corrosion o ka uhi.No ke ʻano pena like, ʻo ka mānoanoa o ka pena ke kumu nui e pili ana i ka corrosion.
Ke emi ka mānoanoa o ka uhi ma lalo o 10μm, ʻaʻole hiki i ka corrosion ke kū pinepine i 500h;i ka wā o 10 ~ 20μm, ma hope o ke kaʻina hoʻāʻo like, hoʻonui i ka mānoanoa o ka uhi i ka hopena koʻikoʻi i ka hōʻemi ʻana i ka pae corrosion o ka uhi;ma waena o 20～26μm I ka manawa like, piʻi ka pae corrosion o ka uhi me ka mānoanoa, a ʻaʻole maopopo ka loli;a e piʻi aʻe ka paʻakikī o ka hoʻomalu ʻana i ke kaʻina hana me ka hoʻonui ʻia o ka mānoanoa.ʻO ka uhi ʻana ma luna o 26μm e pili ana i nā hanana maikaʻi ʻole e like me ka mānoanoa o nā kihi;hiki ke ʻike ʻia mai ka Comprehensive loiloi o ke kumukūʻai a me ka hana, ʻo 20μm kahi waiwai haʻahaʻa no ka loaʻa ʻana o ka maikaʻi a me ka hoʻokele kino.
Ka manawa hoʻouna: Jul-05-2022
