ʻO ka Galvanizing e pili ana i ka ʻenehana lapaʻau ʻili o ka hoʻopaʻa ʻana i kahi papa zinc ma luna o ka ʻili o kahi metala, nā mea hao a i ʻole nā mea ʻē aʻe e pāʻani ai i ka hopena aesthetic a me ka pale ʻana.
Hiki ke hoʻoheheʻe ʻia ka Zinc i nā waikawa a me ka alkali, no laila ua kapa ʻia ʻo ia he metala amphotropic. Hoʻololi liʻiliʻi ka Zinc i ka ea maloʻo. ʻO ka hydrogen sulfide a me ka lewa moana, ʻaʻole maikaʻi ke kūpaʻa o ka zinc corrosion, ʻoi aku ka maikaʻi ma ke kiʻekiʻe o ka wela a me ka haʻahaʻa kiʻekiʻe i loko o ka lewa waikawa organik, maʻalahi ka hoʻopili ʻana i ka zinc. ʻO ka mana electrode maʻamau o ka zinc he-0.76V, no ka matrix steel, zinc coating no ka anodic coating, hoʻohana nui ia e pale i ka corrosion o ke kila, kāna hana pale a me ka mānoanoa o ka uhi e pili loa. ʻO ka hoʻomaʻamaʻa ʻana i ka passivation, staining a i uhi ʻia me ka mea pale pale māmā, hiki ke hoʻomaikaʻi nui i kona pale a me ka hoʻonaninani.
ʻO ka galvanizing anuanu
ʻO Cold galvanizing, i kapa ʻia ʻo electrogalvanizing, ʻo ia ka hoʻohana ʻana i nā lako electrolytic ma hope o ka ʻaila, pickling, zinc paʻakai i loko o ka hopena, a hoʻohui i ka electrode maikaʻi ʻole o nā mea electrolytic, ma ke ʻano o ka pā zinc, pili i ka electrode maikaʻi o ka electrolytic. ʻO ka mana lako, me ka hoʻohana ʻana i kēia manawa mai ka maikaʻi a i ka maikaʻi ʻole e waiho i kahi papa o ka zinc ma luna o ka paipu, e hana mua ʻia ka paipu anu plating ma hope o ka galvanizing.
Mechanical galvanized
I loko o ka pahu kaʻa i hoʻolako ʻia me ka plating, ka pōpō aniani, ka pauka zinc, ka wai a me ka mea hoʻolaha, ʻo ka pōpō aniani e like me ke ʻano hopena me ka pahu, friction a me ka hāmare ma ka ʻili o ka plating e hana i ka ikehu kino mechanical.Ma lalo o ka hana a ka mea hoʻolaha kemika, ʻo ka pauka zinc i uhi ʻia i ka "weld welding" i ka ʻili o ka uhi ʻana, e hana ana i kahi paʻa, ʻaʻahu a me nā kikoʻī kikoʻī me kahi mānoanoa.
Wela-pauea
ʻO ke ala nui o ka hoʻoheheʻe ʻana i ka ʻili o ke kila he wela-dip galvanizing.
Ua hoʻomohala ʻia ka galvanizing wela mai nā ʻano kahiko a he hoʻokahi haneli a me kanahiku mau makahiki mai ka wā i hoʻohana ʻia ai i ka ʻoihana i ka makahiki 1836. Akā naʻe, ua hoʻomohala ʻia ka ʻoihana wela wela ma kahi ʻano nui me ka hoʻomohala wikiwiki ʻana o ke kila ʻōwili anuanu. i nā makahiki he kanakolu i hala.
ʻO ke kaʻina hana o ka pā galvanized wela ka mea nui: ka papa mua pre-plating hot dip post-treatment hoʻopau i ka nānā ʻana i ka huahana, etc.According i ka maʻamau, e like me ke ʻano o ka hoʻomaʻamaʻa plating ʻokoʻa, ua māhele ʻia ke kaʻina hana galvanizing wela i waho laina. a me ka annealing i loko o ka laina annealing.
Ka manawa hoʻouna: Mei-13-2022