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ʻO Dacromet Hex Socket Bolts: ʻO ka mea hoʻoheheʻe anti-corrosion kiʻekiʻe e hālāwai me ka hoʻolālā hoʻopaʻa pololei
2026-07-27
Hōʻike nā bolts hex Dacromet i ka hui ʻana o ʻelua ʻenehana paʻa koʻikoʻi: ʻo ka Dacromet high-performance anti-corrosion coating system a me ka cylindrical socket-head (Allen) bolt geometry. Hāʻawi pū lākou i kahi hopena hoʻopaʻa paʻa e kūpaʻa i nā kaiapuni koʻikoʻi ʻoiai e ʻae ana i ka hoʻonohonoho kiʻekiʻe-torque pololei, e hoʻolilo iā lākou i mea nui i ka automotive, moana, kūkulu, a me nā noi mīkini kaumaha ma ka honua holoʻokoʻa.
1. ʻenehana hoʻopili ʻo Dacromet
ʻO Dacromet kahi ʻōnaehana hoʻoheheʻe inorganic i hoʻokumu ʻia i ka wai i hoʻokumu mua ʻia no nā mea paʻa kalapona a me ke kila kila. ʻAʻole like me ka zinc electroplated maʻamau, hoʻohana ʻo Dacromet i kahi kaʻina hana kemika chromium-free (a haʻahaʻa-chromium) e hana i kahi pale paʻa paʻa paʻa o ka zinc a me nā flakes alumini. ʻO ka hopena, he ʻāpana kala-hina ʻokoʻa e hoʻohui i ka neutrality aesthetic me ka hana pale ʻokoʻa.
ʻO nā papa ʻekolu e hana synergistically e hāʻawi i ka pale ākea:
ʻO Zinc-aluminum flake base layer – hāʻawi i ka hoʻomalu kaumaha (cathodic), ʻoi aku ka maikaʻi o ka ʻino ʻana e pale i ke kumu kila i lalo, aʻo nā flakes alumini e hoʻohui i ka pale pale.
Passivation mid-layer – he kiʻiʻoniʻoni chromate/silicate inorganic e hoʻopaʻa ana i ke ʻano o ka paʻakai paʻakai, hoʻouka kemika, a me ka wela ma mua o ka hoʻopaʻa ʻana i ka zinc maʻamau.
ʻO ka ʻaʻahu seal organik kiʻekiʻe (koho) – hoʻonui i ka hana pale-torque a me ke kū ʻana i ka wā, ʻoiai e hana ana i kahi hiʻohiʻona kala-hina me ka helu haʻahaʻa o ka friction.
Papa 1. Hoʻohālikelike Kūʻē Kūʻē (Salt Spray Test, NSS)
| ʻAno ʻili | Na hora paakai | Mānoanoa (μm) | Hoʻohana maʻamau |
| ʻO Dacromet | ≥ 1,000 – 3,000 | 6 – 10 | Kaʻa moana / kaʻa |
| ʻo Ruspert | ≥ 1,000 – 3,000 | 3 – 5 | Ma waho / moana |
| Zn-Ni i hoʻopili ʻia | ≥ 720 – 1,000 | 8 – 12 | Kaʻa kaʻa |
| Hoʻopalapala Zn maʻamau | 96 – 240 | 5 – 8 | Loko / nui |
2. Hex Socket Bolts
Hex socket bolts, ʻike ʻia hoʻi he socket head cap screws a i ʻole Allen bolts, he poʻo cylindrical me kahi kaʻa hexagonal kūloko. Hāʻawi kēia geometry i ka hoʻoili ʻana i ka torque kiʻekiʻe me kahi ʻaoʻao poʻo liʻiliʻi i hoʻohālikelike ʻia i nā bolts hex waho, e hoʻolilo iā lākou i mea kūpono no nā noi me ka palena palena ʻole a i ʻole kahi e koi ʻia ai kahi hiʻohiʻona maʻemaʻe.
ʻO nā hiʻohiʻona hoʻolālā koʻikoʻi he:
Poʻo cylindrical me ka pahu hex i loko – ʻae i nā kī hex maʻamau no ka hoʻokomo ʻana i ka kiʻekiʻe me ka liʻiliʻi o ke poʻo; ʻO ka nui o nā kaʻa e like me ISO 2936 a i ʻole ASME B18.3.
Uila piha a ʻāpana paha – puʻunaue like nā ʻano milo piha i ka ukana ma ka lōʻihi i hoʻopili ʻia; Hāʻawi nā ʻano ʻokoʻa ʻāpana-wili i kahi shank unthreaded ʻoi aku ka ikaika no nā noi ʻoki.
Ke kila kila ikaika kiʻekiʻe (8.8 / 10.9 / 12.9) - ʻo nā māka i mālama ʻia i ka wela e hōʻoia i ka ikaika tensile a hiki i 1,220 MPa, kūpono no nā haʻahaʻa ikaika a me nā hui koʻikoʻi.
ʻO ka hoʻopau ʻana o Dacromet – hāʻawi iā ≥ 1,000 mau hola o ka pale paʻakai me ka ʻole o ka hydrogen embrittlement, e kūpono ana ia no nā mea hoʻopaʻa ikaika kiʻekiʻe kahi i kūpono ʻole ai ka electroplating.
Papa 2. Nā kikoʻī maʻamau ʻo Dacromet Hex Socket Bolt (Papa Waiwai 8.8)
| Nui | Thread Dia. (mm) | Kiʻekiʻe Poʻo (mm) | Min. U'a (MPa) | Hoʻohana maʻamau |
| M4 | 4 | 4 | 800 | Mea uila / mea kani |
| M5 | 5 | 5 | 800 | Hui māmā |
| M6 | 6 | 6 | 800 | Lako / mīkini |
| M8 | 8 | 8 | 800 | Mechanical / kaʻa |
| M10 | 10 | 10 | 830 | Nā hui kuʻuna |
| M12 | 12 | 12 | 830 | Mekini kaumaha |
3. Hōʻuluʻulu manaʻo
Hoʻohui nā bolts hex ʻo Dacromet i ke kūpaʻa ʻino maikaʻi o ka ʻōnaehana hoʻoheheʻe inorganic ʻo Dacromet (loaʻa i nā hola 1,000–3,000 o ka pale paʻakai me ka ʻole hydrogen embrittlement) me ka hoʻolālā kiʻekiʻe, haʻahaʻa haʻahaʻa o ka bolt kumu hex. Hiki i kēia hoʻohui ke hoʻopaʻa pono i nā kaiapuni koi - mai nā chassis a me nā ʻōnaehana brake i nā hale kai a me nā lako waho - ʻoiai e mālama ana i ka mana torque pololei a me ka lōʻihi lōʻihi. Ke koi nui nei nā ʻoihana i nā mea hoʻopaʻa e kaulike i ka hana, palekana, a me ka lōʻihi, ua lilo ʻo Dacromet hex socket bolts i koho koho no nā ʻenekinia a me OEM ma ka honua holoʻokoʻa.
