He mea koʻikoʻi ka uhi ʻana o ka ʻili ma luna o ka wili e like me ka mea screwr ponoʻī. Hoʻokumu ʻia nā wili uila ma o ka ʻoki ʻana a i ʻole ka hana ʻana i ka mīkini, a ʻo ka uhi ʻana o ka ʻili e hāʻawi i kahi ʻāpana koʻikoʻi o ka pale ʻana no ka shank screw a me nā kaula.
I kēlā hopena, pōmaikaʻi nui nā ʻūlū mai kahi ākea o nā ʻili ʻili i hana ʻia i hoʻohālikelike ʻia i kēlā me kēia noi wili i mea e hāʻawi ai i ka pale ʻana i ka corrosion a me ka pohā.
Ma kahi pōkole, hoʻohana ʻia nā ʻili o ka ʻili i nā wili e hoʻonui ai i ke kūpaʻa ʻana o ka ʻili a pale i ka wili mai ka hāʻule mua ʻana ma muli o ka ʻino a i ʻole ka haki ʻana.
No laila, he aha nā ʻano hana lapaʻau maʻamau? ʻO kēia nā ʻano hana lapaʻau maʻamau maʻamau.
1. Hoʻopili Zinc
ʻO ke ʻano lapaʻau maʻamau maʻamau noʻO ka screw he electro galvanizing. ʻAʻole ia he mea kūʻai wale nō, akā he nani nō hoʻi kona helehelena. Loaʻa ka electroplating i ka ʻeleʻele a me ka ʻōmaʻomaʻo koa. Eia nō naʻe, ʻo kahi hemahema o ka electro galvanizing ʻo ia ka mea maʻamau ka hana anti-corrosion, a loaʻa iā ia ka hana anti-corrosion haʻahaʻa loa o kekahi papa plating (coating). Ma keʻano laulā, hiki i nā wili ma hope o ka electro galvanizing ke hele i ka hoʻāʻo ʻana i ka paʻakai paʻakai kūʻokoʻa i loko o 72 mau hola, a ua hoʻohana pū ʻia kahi mea hoʻopaʻa sila kūikawā, i hiki ai i ka hoʻāʻo ʻana i ka paʻakai ma hope o ka electro galvanizing ke lōʻihi ma mua o 200 mau hola, akā ʻoi aku ke kumukūʻai. , ke kumu kūʻai o 5-8 manawa e like me ka galvanizing maʻamau.
2. Hoʻopili Chromium
ʻO ka uhi chromium ma nā mea hoʻopaʻa paʻa paʻa i ke kaiapuni, ʻaʻole hiki ke hoʻololi maʻalahi i ka waihoʻoluʻu a nalowale ka luster, he paʻakikī kiʻekiʻe, a ʻaʻole hiki ke ʻaʻahu. ʻOiai ua hoʻohana mau ʻia ka uhi chromium ma ke ʻano he uhi hoʻonaninani ma nā mea hoʻopaʻa, ʻaʻole i hoʻohana pinepine ʻia i nā ʻoihana e koi ana i ke kūpaʻa corrosion kiʻekiʻe. Ma muli o ke kumukūʻai o nā mea hoʻopili chrome maikaʻi e like me ke kila kila, pono e hoʻohana wale ʻia inā ʻaʻole lawa ka ikaika o ke kila kila. No ka hoʻomaikaʻi ʻana i ka pale ʻana i ka corrosion, pono e uhi ʻia ke keleawe a me ka nickel ma mua o ka hoʻopaʻa ʻana i ka chromium. ʻOiai hiki i ka uhi chromium ke kū i nā wela kiʻekiʻe o 1200 degere Fahrenheit (650 degere Celsius), loaʻa ia i ka pilikia embrittlement hydrogen like me ka galvanizing.
3. Ke kala a me ka nickel plating ma ka ʻili
Ka uhi kala no nā mea hoʻopaʻa wililawelawe ʻo ia ma ke ʻano he lubricant paʻa no nā mea hoʻopaʻa a me ke ʻano o ka pale ʻana i ka corrosion. Ma muli o ke kumukūʻai, ʻaʻole i hoʻohana pinepine ʻia nā wili, a i kekahi manawa ua uhi ʻia nā bolts liʻiliʻi. ʻOiai ua ʻeleʻele ia i ka lewa, e hana mau ana ke kālā ma 1600 degere Fahrenheit. I mea e hana ai i loko o nā mea hoʻopaʻa wela kiʻekiʻe a pale aku i ka oxidation screw, hoʻohana ka poʻe i ko lākou kūpaʻa wela kiʻekiʻe a me nā ʻano lubricating. Hoʻopili pinepine ʻia nā mea paʻa i ka nickel-plated ma nā wahi me ka conductivity kiʻekiʻe a me ke kūpaʻa corrosion. No ka laʻana, ka pahu e komo mai ana o ka pilahi kaʻa.
4.ʻO ka lāʻau lapaʻau wiliʻO Dacromet
ʻO ka lapaʻau ʻili oʻO Dacromet no nā mea hoʻopaʻa wiliʻAʻole i loko o ka hydrogen embrittlement, a hana maikaʻi loa ka torque preload. Eia naʻe, hoʻohaumia nui ia. Me ka ʻole o ka noʻonoʻo ʻana i nā pilikia me ka chromium a me ka pale ʻana i ke kaiapuni, kūpono maoli ia no nā mea hoʻopaʻa ikaika kiʻekiʻe me nā koi anti-corrosion ikaika.
5. Ka phosphating i luna
ʻOiai ʻoi aku ka liʻiliʻi o ka phosphorating ma mua o ka galvanizing, hāʻawi ia i ka pale liʻiliʻi mai ka corrosion.Nā mea hoʻopaʻa wilipono e aila ma hope o ka phosphating no ka mea he nui ka hana o ka aila me ka pale ʻana i ka corrosion o nā mea hoʻopaʻa. E noi i ka aila antirust maʻamau ma hope o ka phosphating, a ʻo ka hoʻāʻo ʻana i ka paʻakai paʻakai e lawe wale i 10 a 20 mau hola. Hiki ke hoʻopaʻa ʻia i ka screw 72-96 mau hola inā hoʻohana ʻia ka ʻaila antirust kiʻekiʻe, akā ʻo ke kumukūʻai he 2-3 mau manawa kiʻekiʻe ma mua o ka ʻaila phosphating. Ma muli o ko lākou torque a me ka pre-tightening ikaika i ka hana maʻamau, ʻo ka hapa nui o nā mea hoʻopaʻa ʻenehana ʻenehana e mālama ʻia e ka phosphating + oiling. Hoʻohana pinepine ʻia i ka hale ʻoihana no ka mea hiki ke hoʻokō i nā pono paʻa i manaʻo ʻia i ka wā o ka hui ʻana o nā ʻāpana a me nā ʻāpana. ʻOi aku i ka wā e hoʻopili ai i kekahi mau mea koʻikoʻi, hoʻohana kekahi mau screws i ka phosphating, hiki ke pale i ka pilikia o ka hydrogen embrittlement. ʻO ka hopena, ma ka ʻoihana ʻoihana, ʻoi aku ka maʻamau o ka phosphated me ka pae kiʻekiʻe ma mua o 10.9.
Ka manawa hoʻouna: Feb-15-2023