ʻO Dacromet Coating Bolts–He alakaʻi piha i ka Zinc-Aluminum Flake Coating Technology for Fasteners 

1. He aha ka Dacromet?

Ua hoʻomohala ʻia ʻo Dacromet i ka hopena o 1960s e ka hui ʻAmelika ʻo Diamond Shamrock (ma hope MCI, a laila NDS / Doerken MKS). I hana mua ʻia no ka hoʻoponopono ʻana i nā hemahema o ka hydrogen embrittlement i nā mea hoʻopili automotive kiʻekiʻe, ua lilo ia i mea maʻamau i ʻike ʻia i ka honua anti-corrosion coating standard, i hōʻike ʻia ma lalo o ISO 10683, ASTM B695, a me nā kūlana aupuni like ʻole (GB/T 18684 ma Kina).

Nā ʻano nui

Kaʻina non-electrolytic: Hoʻohana ʻia ʻo Dacromet ma o ka dip-spin coating, ʻaʻole electroplating. ʻAʻohe au uila e hele i nā ʻāpana, e hoʻopau ana i ka hana hydrogen a me ka pilikia embrittlement e pili ana.

Ka uhi ʻana i ka flake: ʻO ka uhi ʻia he microscopic zinc a me nā flakes alumini (20-60 nm mānoanoa) e uhi ʻia e like me nā shingles o ka hale, e hana ana i kahi pā paʻa, multi-layered.

Ka lahilahi a me ka like ole: ʻO ka mānoanoa o ka uhi maʻamau he 4-10 µm - lawa ka lahilahi e mālama ai i ke kūpono o ke kaula a me nā ʻae ʻana, ʻaʻole like me ka galvanizing wela wela.

Kūlike kaiapuni: ʻAʻole manuahi ʻo Dacromet o kēia manawa i ka hexavalent chromium (Cr⁶⁺), e hui ana i nā kuhikuhi RoHS, REACH, a me ELV (End-of-Life Vehicle).

Pale wela: Kūleʻa ka pale inorganic i nā mahana lawelawe hoʻomau a hiki i 250 ° C, e kūpono ana i nā mea hoʻopaʻa hoʻokele a me nā mea hoʻopili hoʻopau.

2.Key Pono

ʻOi aku ka maikaʻi o ka corrosion resistance: 500–1,200 hola o ka paʻakai paʻakai kūʻokoʻa (NSS) no ISO 9227 — 5–10 manawa ʻoi aku ka maikaʻi ma mua o ka hoʻoheheʻe zinc maʻamau (96–240 hola).

Zero hydrogen embrittlement: Hoʻopau ke kaʻina hana non-electrolytic i ka hydrogen absorption, e hoʻolilo iā Dacromet i ka uhi i makemake ʻia no nā mea hoʻopaʻa ikaika kiʻekiʻe (Papa 8.8–12.9) kahi i kaupalena ʻia a pāpā ʻia paha ka electroplating.

ʻO ka like ʻole o ka uhi ʻana: Uhi ʻia ka uhi ʻana i nā wahi hoʻomaha, nā puka makapō, a me nā geometries paʻakikī ma mua o ka electroplating a i ʻole ka galvanizing wela. Loaʻa i nā piko a me nā aʻa ka uhi paʻa.

ʻO ka uhi lahilahi, mālama ʻia nā hoʻomanawanui: Ma ka 4-10 µm, ʻaʻole ʻae ʻo Dacromet i ka hoʻopili ʻana i ke kaula a i ʻole nā pilina torque-tension. ʻAʻole koi ʻia ke paʻi hou ʻana i nā nati, ʻaʻole like me nā mea hoʻopaʻa galvanized wela.

Palena wela: ʻO ka mea hoʻoheheʻe ceramic-like inorganic e mālama i kona mau mea pale i nā mahana a hiki i ka 250 ° C (hoʻomau) a me 300 ° C (pōkole), ʻoi aku ma mua o nā uhi kūlohelohe.

Kūlike kaiapuni: ʻAʻohe o Cr⁶⁺, kūpono i nā kuhikuhi RoHS, REACH, a me ELV. He haʻahaʻa haʻahaʻa ka VOC hoʻoheheʻe ʻia ka wai hoʻoheheʻe ʻia i ka wai i hoʻohālikelike ʻia me nā mea ʻē aʻe.

ʻO ka hoʻopili maikaʻi ʻana a me ke kūpaʻa ʻana: ʻOi aku ka maikaʻi o ka hoʻopaʻa ʻia ʻana o ka flake i hoʻopaʻa ʻia me ke kemika i ka ʻoki ʻana, ka ʻoki ʻana, a me ka mālama ʻana i nā pōʻino ma mua o ka hoʻopili maʻamau.

3. Hoʻohālikelike me nā ʻāpana ʻē aʻe

Hoʻohālikelike ka papa ma lalo nei iā Dacromet me nā mea hoʻopili paʻa paʻa maʻamau ʻelua - electroplated zinc plating a me hot-dip galvanizing:

Paakai paakai no ISO 9227 NSS. Pili ka pilikia embrittlement hydrogen i nā mea hoʻopaʻa electroplated Grade 10.9 a i luna.

4. Nā noi

Kaʻa: ʻO nā ʻāpana ʻenekini, nā mea hoʻopaʻa chassis, nā ʻōnaehana kaʻa, nā ʻāpana hoʻokuʻu, a me nā lako ma lalo o ke kino. Ua kuhikuhi ʻia ʻo Dacromet e nā OEM nui (VW, Toyota, GM, Ford) no nā bolts ikaika kiʻekiʻe (Papa 8.8–10.9) kahi e pale ʻia ai ka hoʻoheheʻe ʻana o ka hydrogen.

Kūkulu a me nā ʻoihana: ʻO nā pili hale kila, nā lako alahaka, nā mea hoʻopaʻa tunnel, a me nā mea paʻa paʻa paʻa i ʻike ʻia i nā kaiapuni haʻahaʻa a ʻino.

Uila & mana: ʻO nā bolts hale kiaʻi hoʻouna, nā lako hoʻololi, a me nā mea hoʻopaʻa paʻa uila e koi ana i ka lōʻihi o waho.

Kaʻaahi & kaʻaahi: ʻO nā mea paʻa paʻa, nā ʻāpana track, a me nā lako hana hōʻailona i ʻike ʻia i nā paʻakai de-icing a me ka ʻino o ka lewa.

Kai & kahakai: ʻO nā lako paʻa a me nā awa, nā mea hoʻopaʻa paʻa i waho o ke kahakai, a me nā mea hana i loko o nā lewa paʻakai (hoʻohui ʻia me ka ʻaʻahu hoʻopaʻa sila no ka pale ʻoi loa).

ikehu makani: ʻO nā bolts flange Tower, nacelle hardware, a me nā kumu heleuma kumu e koi ana i nā ʻumi makahiki o ka mālama ʻana i ka ʻinoʻino ʻole.

Nā mea hana a me ka HVAC: ʻO nā mea hoʻopaʻa hoʻololi wela, nā ʻāpana umu ahi, a me nā lako o waho kahi e pono ai ka pale ʻana i ka wela a me ka pale ʻino.

Hōʻuluʻulu manaʻo

ʻO Dacromet kahi mea i hōʻoia ʻia, kiʻekiʻe ka hana anti-corrosion coating technology no nā mea hoʻopaʻa kila. ʻO kona ʻano zinc-aluminum flake kū hoʻokahi, i hoʻohana ʻia ma o ke kaʻina hana non-electrolytic dip-spin, hāʻawi i 500-1,200 mau hola o ka paʻakai paʻakai me ka ʻole o ka hydrogen embrittlement - e lilo ia i uhi koho no nā bolts ikaika kiʻekiʻe i ka ʻoihana kaʻa, kūkulu, a me ka ikehu. Me kona kiʻiʻoniʻoni lahilahi, ʻano like ʻole, ka hoʻokō ʻana i ke kaiapuni, a me ke kūpaʻa wela maikaʻi loa, hoʻopili ʻo Dacromet i ke āpau ma waena o ka hoʻoheheʻe zinc haʻahaʻa a me ke kila kila kila, e hāʻawi ana i kahi kaulike maikaʻi loa o ka hana, hilinaʻi, a me ke kumukūʻai no ke koi ʻana i nā noi paʻa.