Fastener surface lapaʻau kaʻina hana: galvanizing, phosphating, blackening, ka mea aʻu e koho?

I ka ʻoihana hou, ʻo nā mea hoʻopaʻa i nā mea koʻikoʻi no ka hoʻopili ʻana i nā ʻāpana, a pili pono kā lākou hana i ka paʻa a me ka palekana o nā lako holoʻokoʻa. ʻAʻole pili wale ka mālama ʻana o nā mea paʻa i ko lākou helehelena nani, akā i kā lākou hana anti-corrosion a me ke ola lawelawe. No laila, ʻo ke koho ʻana i kahi kaʻina hana lapaʻau kūpono i lilo i ʻāpana koʻikoʻi o ka hana paʻa i hiki ʻole ke nānā ʻole ʻia.

ʻO ka mea mua, e kamaʻilio e pili ana i ka electrogalvanizing i hoʻohana pinepine ʻia. Alectrogalvanizing ua lilo i mea uhi maʻamau no nā mea hoʻopaʻa pāʻoihana me kona kumu kūʻai haʻahaʻa a me kona helehelena maikaʻi. Eia naʻe, ʻaʻole maikaʻi kāna hana anti-corrosion, ʻoi aku ka nui o ka haʻahaʻa haʻahaʻa a i ʻole ka corrosive, a pono e hoʻomaikaʻi ʻia kona lōʻihi. I mea e hoʻoponopono ai i kēia pilikia, ua hoʻokomo ʻia kekahi mau mea sila kūikawā e hoʻonui i kona ola anti-corrosion. Akā ua hoʻonui ʻia ke kumukūʻai o ia ʻano lapaʻau, a pono e kaupaona ʻia e like me ke ʻano hoʻohana kikoʻī.

ʻO ka hope aʻephosphating. ʻAʻole hiki ke kūʻai wale ʻia ka Phosphating, akā loaʻa nō hoʻi ke kūpaʻa corrosion maikaʻi a me ke kūpaʻa ʻaʻahu, kūpono loa no nā bolts ikaika kiʻekiʻe. Hiki i ka ʻaila ma hope o ka phosphating ke hoʻomaikaʻi hou i kāna hana anti-corrosion a kūpono no ka hoʻopili ʻana i nā ʻāpana koʻikoʻi. He mea pono e ʻōlelo ʻia hiki i ka phosphating ke pale i ka hydrogen embrittlement, ʻo ia kahi mea e pono e noʻonoʻo ʻia i ka hana ʻana i nā bolts ikaika.

E kamaʻilio kākouoxidation (ʻeleʻele)lapaʻau. He haʻahaʻa loa ke kumu kūʻai o kēia ʻano lapaʻau, akā e ʻōpala koke ia me ka loaʻa ʻole o ka aila. No laila, hui pū ʻia me ka ʻaila e hoʻonui i ke ola lawelawe. ʻOiai ua kaupalena ʻia ka pale ʻana i ka corrosion, he koho hoʻokele waiwai ia i kekahi mau manawa koʻikoʻi.

ʻO ka Cadmium electroplatinghana maikaʻi i nā kaiapuni lewa moana ma muli o kona kūpaʻa maikaʻi loa. Eia nō naʻe, ʻo ke kumukūʻai kiʻekiʻe a me nā koina hoʻomaʻemaʻe wai i ka wā o ke kaʻina hana e hoʻopaʻa i kona laulā noi. ʻIke ʻia ʻo Chromium electroplating no kona paʻakikī kiʻekiʻe a me ke kūpaʻa ʻana, akā loaʻa nō hoʻi nā koina kiʻekiʻe a me nā pilikia embrittlement hydrogen.

Hoʻopalapala nikelaHe ala lapaʻau ʻili e hiki ke pale i ka corrosion a mālama i ka conductivity maikaʻi. Hoʻohana nui ʻia ia i nā manawa kahi e koi ʻia ai ke kūpaʻa corrosion a me ka conductivity, e like me nā hopena alakaʻi i waho o nā pihi kaʻa.

ʻO ka galvanizing wela a me ka Zinc infiltrationʻelua mau ʻano hana lapaʻau i hoʻohana nui ʻia i ka ʻenekinia. ʻIke ʻia ʻo Hot-dip galvanizing no kona uhi ʻoi aku ka mānoanoa a me ka pale ʻana i ka corrosion maikaʻi, akā hiki ke pilikia me ka paʻakikī i ka wili ʻana i nā kaula o loko a me waho. Makemake ʻia ʻo Zinc infiltration no kona kūlike maikaʻi, ka ikaika hoʻopaʻa kiʻekiʻe me ka substrate, a me ka pale o ke kaiapuni a me ka pollution-free.

ʻO ka hope, pono mākou e haʻiDacrometlapaʻau. ʻO kēia ʻano hou o ka pale anti-corrosion ʻaʻole wale ka hana anti-corrosion maikaʻi loa, akā ʻaʻohe pilikia hydrogen embrittlement a me ka torque-preload consistency maikaʻi. Eia nō naʻe, he kumukūʻai a loaʻa nā pilikia kaiapuni, no laila pono e hoʻohana ʻia ma hope o ka noʻonoʻo piha ʻana i ke kumukūʻai a me nā koi kaiapuni.

I ka hōʻuluʻulu ʻana, pono e noʻonoʻo pono ka koho ʻana o ka hoʻomaʻamaʻa ʻana i nā mea he nui e like me ka hana anti-corrosion, ke kumu kūʻai, ka hoʻohana ʻana i ke kaiapuni, nā koi o ke kaiapuni, a me nā pono hana o ka mea hoʻopili ponoʻī. Ma ka ʻimi wale ʻana i ke ʻano hana lapaʻau kūpono kūpono e hiki ai iā mākou ke hōʻoia i ka hoʻopaʻa ʻana i ka hana paʻa a me ka palekana hilinaʻi i ka hoʻohana lōʻihi.

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