ʻO ke kaʻina hana o ka papa galvanized wela ka hana o ka hana ʻana i ka hao-zinc ma waena o ka pā hao a me ka papa zinc maʻemaʻe waho.Hoʻokumu ʻia ka ʻāpana hao-zinc ma ka ʻili o ka mea hana i ka wā o ka hoʻoheheʻe wela, i kokoke loa ka hao a me ka papa zinc maʻemaʻe.Hoʻohui maikaʻi.Ke kaʻina hana o nā wili nui ouwea galvanizedhiki ke wehewehe maʻalahi e like me: ke hoʻokomo ʻia kahi mea hana hao i loko o ka wai zinc hoʻoheheʻe ʻia, hoʻokumu mua ʻia kahi hopena paʻa o ka zinc a me ka α-iron (kino kino) ma ka interface.He aniani kēia i hana ʻia e ka hoʻoheheʻe ʻana i nā ʻātoma zinc i loko o ka hao kumu ma kahi kūlana paʻa.Hoʻohui ʻia nā ʻātoma metala ʻelua, a liʻiliʻi ka huki ʻana ma waena o nā ʻātoma.
No laila, i ka hiki ʻana o ka zinc i ka saturation i loko o ka hoʻonā paʻa, hoʻopuehu nā ʻātoma o ka zinc a me ka hao i kekahi i kekahi, a ʻo nā ʻātoma zinc e laha ana i loko (a komo i loko) e neʻe ana ka matrix hao i ka lattice matrix, e hana mālie i kahi huila me ka hao. a laha i loko ʻO ka hao i loko o ka wai zinc i hoʻoheheʻe ʻia he hui intermetallic FeZn13 me ka zinc, e komo i lalo o ka ipu hao wela, a lilo i zinc slag.Ke hoʻoneʻe ʻia ka mea hana mai ka hoʻonā zinc dipping solution, ua hoʻokumu ʻia kahi papa zinc maʻemaʻe ma ka ʻili, he aniani hexagonal, a ʻaʻole ʻoi aku ka nui o ka hao ma mua o 0.003%.
ʻO ka galvanizing hot-dip, ʻike ʻia hoʻi he hot-dipgalvanizing, he ala ia e hoʻokomo ʻia ai nā ʻāpana kila i loko o ka zinc hoʻoheheʻe ʻia e loaʻa ai kahi uhi metala.Me ka hoʻomohala wikiwiki ʻana o ka lawe ʻana i ka mana kiʻekiʻe, ka lawe ʻana, a me ke kamaʻilio ʻana, ke piʻi aʻe nei nā koi palekana no nā ʻāpana kila, a ke piʻi aʻe nei ke koi no ka hot-dip galvanizing.ʻO ka maʻamau ka mānoanoa o ka papa electro-galvanized ʻo 5-15 μm, ʻoiai ʻo ka mānoanoa o ka nui o ka coil galvanized wire layer ma luna o 35 μm, ʻoiai ke kiʻekiʻe o 200 μm.Loaʻa ka uhi ʻana o ka galvanizing Hot-dip, ka uhi paʻa, a ʻaʻohe mea hoʻohui.
E like me kā mākou e ʻike ai, ʻo ka hana o ka zinc's anti-atmospheric corrosion e pili ana i ka pale mechanical a me ka pale electrochemical.Ma lalo o nā kūlana ʻino o ka lewa, aia nā ZnO, Zn(OH)2 a me nā kiʻi ʻoniʻoni pale zinc carbonate ma ka ʻili o ka papa zinc, e hoʻolohi i ka ʻino o ka zinc i kekahi ʻano.ʻO ka papa mua o ke kiʻi pale (ʻikeʻia hoʻi he'ōpala keʻokeʻo) ua pōʻino, a e hanaʻia kahi papa kiʻi hou.
Ke hoʻopōʻino nui ʻia ka papa zinc a hoʻoweliweli i ka substrate hao, e pale electrochemically ka zinc i ka substrate, ʻo ka mana maʻamau o ka zinc ʻo -0.76V, a ʻo ka mana maʻamau o ka hao he -0.44V.I ka hana ʻana o ka zinc a me ka hao i ka puʻupuʻu micro, hoʻoheheʻe ʻia ka zinc ma ke ʻano he anode, a pale ʻia ka hao ma ke ʻano he cathode.ʻIke loa, ʻoi aku ka maikaʻi o ka galvanizing wela ma mua o ka electro-galvanizing i kona hiki ke pale aku i ka ʻino o ka lewa o ka hao kumu.
Ka manawa hoʻouna: 14-06-23