ʻO ke koho ʻana i ka mālama ʻili he pilikia ia e kū nei i kēlā me kēia mea hoʻolālā. Nui nā ʻano koho mālama ʻili i loaʻa, a ʻaʻole pono i kahi mea hoʻolālā kiʻekiʻe ke noʻonoʻo wale i ka hoʻokele waiwai a me ka pono o ka hoʻolālā, akā e hoʻolohe pū i ke kaʻina hana hōʻuluʻulu a me nā koi o ke kaiapuni. Aia ma lalo kahi hoʻolauna pōkole i kekahi mau uhi i hoʻohana pinepine ʻia no nā mea hoʻopaʻa e pili ana i nā kumumanaʻo i luna, no ka ʻike ʻana e nā mea hoʻomaʻamaʻa mea hoʻopaʻa.
1. Hoʻoheheʻe uila
ʻO ka zinc ka uhi i hoʻohana nui ʻia no nā mea paʻa kalepa. He haʻahaʻa ke kumukūʻai, a maikaʻi ke ʻano. ʻO nā kala maʻamau e komo pū me ka ʻeleʻele a me ka ʻōmaʻomaʻo koa. Eia nō naʻe, ʻo kāna hana anti-corrosion he awelika, a ʻo kāna hana anti-corrosion ka haʻahaʻa loa ma waena o nā papa zinc plating (coating). Ma ke ʻano laulā, hana ʻia ka hoʻāʻo pīpī paʻakai kūlike o ke kila galvanized i loko o 72 mau hola, a hoʻohana ʻia nā mea sila kūikawā e hōʻoia i ka lōʻihi o ka hoʻāʻo pīpī paʻakai kūlike no nā hola he 200. Eia nō naʻe, he pipiʻi ke kumukūʻai, ʻo ia hoʻi he 5-8 mau manawa o ke kila galvanized maʻamau.
He maʻalahi ke kaʻina hana o ka electrogalvanizing i ka hydrogen embrittlement, no laila ʻaʻole mālama ʻia nā bolts ma luna o ka papa 10.9 me ka galvanizing. ʻOiai hiki ke wehe ʻia ka hydrogen me ka hoʻohana ʻana i ka umu ma hope o ka plating, e hōʻino ʻia ka ʻili passivation i nā mahana ma luna o 60 ℃, no laila pono e lawe ʻia ka hydrogen ma hope o ka electroplating a ma mua o ka passivation. He hana maikaʻi ʻole kēia a me nā kumukūʻai hana kiʻekiʻe. ʻO ka ʻoiaʻiʻo, ʻaʻole wehe ikaika nā hale hana hana maʻamau i ka hydrogen ke ʻole i kauoha ʻia e nā mea kūʻai aku kikoʻī.
ʻO ke kūlike ma waena o ka torque a me ka ikaika pretightness o nā mea paʻa galvanized he haʻahaʻa a paʻa ʻole, a ʻaʻole lākou i hoʻohana pinepine ʻia no ka hoʻopili ʻana i nā ʻāpana koʻikoʻi. I mea e hoʻomaikaʻi ai i ke kūlike o ka torque preload, hiki ke hoʻohana ʻia ke ʻano o ka uhi ʻana i nā mea lubricating ma hope o ka plating e hoʻomaikaʻi a hoʻoikaika i ke kūlike o ka torque preload.
2. Hoʻohuihui ʻana
ʻO ke kumumanaʻo nui, ʻoi aku ka liʻiliʻi o ke kumukūʻai o ka phosphating ma mua o ke galvanizing, akā ʻoi aku ka ʻino o kona kūpaʻa i ka pala ma mua o ke galvanizing. Ma hope o ka phosphating, pono e hoʻopili ʻia ka ʻaila, a pili loa kona kūpaʻa i ka pala i ka hana o ka ʻaila i hoʻopili ʻia. No ka laʻana, ma hope o ka phosphating, e hoʻopili ana i kahi ʻaila anti-rust maʻamau a hana i kahi hoʻāʻo pīpī paʻakai kūlike no 10-20 mau hola wale nō. Hiki i ka hoʻopili ʻana i ka ʻaila anti-rust kiʻekiʻe ke lawe a hiki i 72-96 mau hola. Akā ʻo kona kumukūʻai he 2-3 mau manawa ma mua o ka ʻaila phosphating maʻamau.
ʻElua ʻano phosphating i hoʻohana pinepine ʻia no nā mea hoʻopaʻa, ʻo ia hoʻi ka zinc based phosphating a me ka manganese based phosphating. ʻOi aku ka maikaʻi o ka hana lubrication o ka zinc based phosphating ma mua o ka manganese based phosphating, a ʻoi aku ka maikaʻi o ka pale ʻana o ka manganese based phosphating i ka pala a me ke kūʻē ʻana i ka ʻaʻahu ma mua o ka zinc plating. Hiki ke hoʻohana ʻia i nā mahana mai 225 a 400 degere Fahrenheit (107-204 ℃). ʻOi loa no ka hoʻopili ʻana o kekahi mau ʻāpana koʻikoʻi. E like me nā bolts koʻokoʻo hoʻohui a me nā nati o ka ʻenekini, ke poʻo cylinder, ka bearing nui, nā bolts flywheel, nā bolts huila a me nā nati, a pēlā aku.
Hoʻohana nā ʻūmiʻi ikaika kiʻekiʻe i ka phosphating, hiki ke pale aku i nā pilikia hydrogen embrittlement. No laila, ʻo nā ʻūmiʻi ma luna o ka papa 10.9 ma ke kahua ʻoihana e hoʻohana pinepine i ka mālama ʻana i ka ʻili phosphating.
3. ʻOkika (ʻeleʻele)
ʻO ka Blackening+oiling kahi uhi kaulana no nā mea hoʻopaʻa ʻoihana no ka mea ʻo ia ka mea makepono loa a nani ke nānā aku ma mua o ka hoʻopau ʻana i ka wahie. Ma muli o kona ʻeleʻele ʻana, ʻaneʻane ʻaʻohe ona hiki ke pale i ka popo, no laila e popo koke ia me ka ʻole o ka ʻaila. ʻOiai ke alo o ka ʻaila, hiki i ka hoʻāʻo pīpī paʻakai ke mau no 3-5 mau hola wale nō.
4. ʻĀpana Electroplating
He kūpaʻa maikaʻi loa ka uhi ʻana o ke kāleka Cadmium i ka pala, ʻoi aku hoʻi i nā wahi lewa moana, i hoʻohālikelike ʻia me nā hana ʻili ʻē aʻe. He kiʻekiʻe ke kumukūʻai o ka mālama ʻana i nā wai ʻōpala i ke kaʻina hana o ka electroplating cadmium, a ʻo kona kumukūʻai ma kahi o 15-20 mau manawa o ka electroplating zinc. No laila, ʻaʻole ia e hoʻohana ʻia i nā ʻoihana maʻamau, no nā wahi kikoʻī wale nō. Hoʻohana ʻia nā mea paʻa no nā kahua ʻeli ʻaila a me nā mokulele HNA.
5. Ka uhi ʻana o Chromium
He paʻa loa ka uhi chromium i ka lewa, ʻaʻole maʻalahi ke hoʻololi i ke kala a nalowale ka ʻōlinolino, a he paʻakikī kiʻekiʻe a he kūpaʻa maikaʻi hoʻi. Hoʻohana pinepine ʻia ka hoʻohana ʻana i ka uhi chromium ma nā mea paʻa no nā kumu hoʻonaninani. ʻAʻole hoʻohana pinepine ʻia i nā kahua ʻoihana me nā koi kūpaʻa kiʻekiʻe i ka palaho, no ka mea, ua like ke kumukūʻai o nā mea paʻa chrome maikaʻi me ke kila kila. I ka wā ʻaʻole lawa ka ikaika o ke kila kila, hoʻohana ʻia nā mea paʻa chrome.
I mea e pale aku ai i ka pala, pono e uhi mua ʻia ke keleawe a me ka nickel ma mua o ke uhi ʻana i ka chrome. Hiki i ka uhi chromium ke kū i nā mahana kiʻekiʻe o 1200 degere Fahrenheit (650 ℃). Akā aia kekahi pilikia o ka hydrogen embrittlement, e like me ka electrogalvanizing.
6. Ka uhi ʻana iā Nickel
Hoʻohana nui ʻia ma nā wahi e pono ai ka pale ʻana i ka palaho a me ka conductivity maikaʻi. No ka laʻana, nā kikowaena puka o nā pila kaʻa.
7. Hoʻoheheʻe wela
ʻO ke galvanizing wela ka uhi hoʻolaha wela o ka zinc i hoʻomehana ʻia i kahi wai. ʻO ka mānoanoa o ka uhi ma waena o 15 a me 100 μm. A ʻaʻole maʻalahi ke kāohi, akā he kūpaʻa maikaʻi kona a hoʻohana pinepine ʻia i ka ʻenekinia. I ka wā o ke kaʻina hana galvanizing wela, aia ka haumia nui, me ka ʻōpala zinc a me ka mahu zinc.
Ma muli o ka uhi mānoanoa, ua pilikia ia i ke wili ʻana i nā kaula kūloko a me waho i nā mea paʻa. Ma muli o ka mahana o ka hana galvanizing wela, ʻaʻole hiki ke hoʻohana ʻia no nā mea paʻa ma luna o ka papa 10.9 (340 ~ 500 ℃).
8. Ke komo ʻana o ka zinc
ʻO ka Zinc infiltration kahi uhi hoʻolaha wela metallurgical paʻa o ka pauka zinc. Maikaʻi kona ʻano like, a hiki ke loaʻa kahi papa like ma nā kaula a me nā lua makapō. ʻO ka mānoanoa o ka plating he 10-110 μm. A hiki ke hoʻomalu ʻia ka hewa ma 10%. ʻO kona ikaika hoʻopaʻa a me ka hana anti-corrosion me ka substrate ka mea maikaʻi loa i nā uhi zinc (e like me ka electrogalvanizing, hot-dip galvanizing, a me Dacromet). ʻAʻohe haumia o kāna kaʻina hana a ʻoi aku ka maikaʻi o ke kaiapuni.
9. ʻO Dacromet
ʻAʻohe pilikia hydrogen embrittlement, a maikaʻi loa ka hana kūlike o ka torque preload. Me ka noʻonoʻo ʻole i ka chromium a me nā pilikia kaiapuni, ʻo Dacromet ka mea kūpono loa no nā mea hoʻopaʻa ikaika kiʻekiʻe me nā koi anti-corrosion kiʻekiʻe.
Ka manawa hoʻouna: Mei-19-2023
