ʻO ke ʻano o ka hoʻokaʻawale ʻana no ka electrogalvanizing a me ka wela galvanizing coatings

No nā ʻāpana kumu maʻamau ka mea hoʻopili, i kapa ʻia ʻo "nā ʻāpana maʻamau".No kekahi mau mea hoʻopaʻa me ka ikaika kiʻekiʻe a me ka pololei, ʻoi aku ka nui o ka mālama ʻana ma mua o ka mālama wela.ʻO nā ʻano mea paʻa a pau i hoʻohana ʻia i ka nui o nā lako mechanical, kokoke i nā mea āpau e pono e hōʻuluʻulu ʻia ma hope o ka mālama ʻana i ka ʻili, i mea e hoʻokō ai i ka anticorrosion, ka hoʻonaninani, ke kūpaʻa ʻana, hoʻemi i ka friction coefficient a me nā hopena ʻē aʻe. he ʻenehana pale pale cathodic.

ʻO ke kumumanaʻo o nā huahana hoʻopaʻa kila electrogalvanizing ka hoʻohana ʻana i ka electrolysis, ka hoʻokumu ʻia ʻana o ka ʻaʻahu, paʻa, hoʻohui maikaʻi ʻia a i ʻole nā ​​​​mea hoʻoheheʻe ʻia ma luna o ka ʻili o ka mea hana, ka hoʻokumu ʻana i kahi papa o ka uhi ma ka ʻili kila, i mea e e hoʻokō i ka pale o ke kaʻina hana ʻino kila.No laila, ʻo ka uhi electrogalvanized kahi neʻe kuhikuhi mai ka electrode maikaʻi i ka electrode maikaʻi ʻole me ka hoʻohana ʻana i kēia manawa.ʻO Zn2+ i loko o ka electrolyte ua nucleated, ulu a waiho ʻia ma ka substrate ma lalo o ka hana o ka hiki ke hana i kahi papa galvanized.Ma kēia kaʻina hana, ʻaʻohe kaʻina diffusion ma waena o ka zinc a me ka hao.Mai ka nānā ʻana i ka microscopic, pono ia he papa zinc maʻemaʻe.I ke kumu, wela hoʻoheheʻe i ka hao-zinc alloy layer a me ka maʻemaʻe zinc papa, a galvanized wale ka papa o ka maʻemaʻe zinc papa, no laila, me ka hao-zinc alloy papa mai ka uhi ua nui ma muli o ka ike ana o ke kaʻina hana, kūpono no. nā mea hoʻopaʻa galvanized, uea kila, paipu kila a me nā huahana ʻē aʻe.Hoʻohana ʻia ke ʻano metallographic a me ke ʻano XRD e ʻike i ka uhi e hoʻokaʻawale i ka electrogalvanizing a me ka galvanizing wela, a e hāʻawi i ke alakaʻi no ka nānā ʻana ʻole.

ʻElua mau ala e hoʻomaopopo ai i ka electrogalvanizing a me ka wela galvanizing coatings.ʻO kekahi ke ʻano metallographic: ʻaʻole i kaupalena ʻia ke ʻano metallographic e ka nui o ka ʻike a me ka nui o ka laʻana, a kūpono i nā huahana electrogalvanizing a me nā mea wela wela.ʻO ka mea ʻē aʻe, ʻo ia ke ʻano hoʻokaʻawale X-ray: pili i ke anawaena o nā bolts plating ʻoi aku ma mua o 5mm a me nā nati i ka mokulele hexagonal;ʻOi aku ka nui o ke anawaena o waho ma mua o 8mm kila paipu ma luna o nā huahana radian, e hōʻoia e hiki ke hana ʻia ka hāpana i ka liʻiliʻi liʻiliʻi o 5mm × 5mm ʻili palahalaha hāpana, a me nā ʻano huahana a pau.Hiki ke hōʻoia i ke ʻano aniani o ka ʻike uhi ≥5% pae.ʻAʻole kūpono nā laʻana me nā waihona zinc maʻemaʻe mānoanoa no ka ʻokoʻa X-ray.