ʻO Dacromet Hex Nuts-Hoʻolauna ʻenehana 

1. Hoʻolauna

ʻO nā hua hexagonal (hex nuts) kekahi o nā mea paʻa i hoʻohana nui ʻia i nā hui mechanical, kūkulu hale, automotive, a me nā noi ʻoihana. Ke hui pū ʻia me nā lāʻau lapaʻau kiʻekiʻe e like me ka uhi ʻana o Dacromet, hāʻawi lākou i ke kūpaʻa corrosion kūʻokoʻa aʻo ka mālama ʻana i nā hoʻomanawanui kikoʻī a me ka pono mechanical.

1.1 He aha ka Hex Nuts?

ʻO ka nati hex he ʻano mea hoʻopaʻa me ke ʻano hexagonal waho a me ka lua i loko. Hāʻawi ka hoʻolālā ʻeono ʻaoʻao i ka hoʻohana ʻana i ka torque maikaʻi me ka hoʻohana ʻana i nā wrenches maʻamau a i ʻole nā ​​kumu. Hana ʻia nā hua Hex e like me nā kūlana honua e like me ISO 4032 (style 1 regular nuts), DIN 934, a i ʻole ASME B18.2.2, e uhi ana i kahi ākea o nā metric a me nā nui imperial.

ʻO nā hiʻohiʻona geometric koʻikoʻi ke anawaena o ka milo i koho ʻia (d), ka pitch (P), ka laula ma nā papa (s), ka laula ma nā kihi (e), a me ke kiʻekiʻe o ka nati (m). ʻO nā papa waiwai (e laʻa, 8, 10, 12 no ke kila) wehewehe i ka ikaika mechanical e hoʻohālikelike i nā māka bolt e pili ana.

1.2 ʻO ka nānā ʻana o ka uhi ʻana o Dacromet

ʻO Dacromet kahi wai-wai, non-electrolytic zinc-aluminum flake coating i hoʻomohala ʻia i nā makahiki 1970. Loaʻa iā ia nā zinc i hoʻopuehu maikaʻi ʻia a me nā ʻāpana alumini i hoʻokuʻu ʻia i loko o kahi mea hoʻopili chromate inorganic (a i ʻole chromium-free). Hoʻohana mua ʻia e nā ʻano dip-spin a i ʻole ka hoʻoulu ʻana a hoʻōla ʻia ma kahi o 280–320 °C, hana ia i kahi kiʻiʻoniʻoni ʻoniʻoni lahilahi (maʻamau 5-12 μm), ʻaʻahu, kala-hina.

ʻAʻole like me ka electroplating maʻamau a i ʻole ka wela-dip galvanizing, hāʻawi ʻo Dacromet i ka pale corrosion ʻoi aku ka maikaʻi me ka pilikia ʻole o ka hydrogen embrittlement - e kūpono loa ia no nā mea hoʻopaʻa ikaika kiʻekiʻe (papa 10.9 a me 12.9).

2. ʻO ka ʻenehana hoʻopili ʻo Dacromet

2.1 Ka Hoʻohui a me ke ʻano

Hoʻokumu ʻia ka uhi ʻana i nā papa o ka zinc a me nā flakes alumini i hoʻopaʻa ʻia e kahi matrix inorganic. Hoʻokumu kēia ʻano lamellar i nā pale kino e kū'ē i ka makū a me nā ion corrosive, ʻoiai ka zinc e hāʻawi i ka pale ʻana (galvanic). Hoʻonui ka alumini i nā waiwai pale a me ka pale wela.

Kiʻi 2. ʻO ka hoʻolālā multi-layer maʻalahi o kahi uhi Dacromet ma luna o ke kila kila

2.2 Kaʻina Noi

ʻO ke kaʻina hana maʻamau:

1. Ka hoʻomākaukau ʻana i ka ʻili - ka alkaline degreasing a me ka hoʻomaʻemaʻe abrasive (ʻaʻohe pickling acid).
2. No ka hoʻopili ʻana - wili-wili a i ʻole ka ʻōpala o ka slurry zinc-aluminum i hoʻokumu ʻia i ka wai.
3. Centrifuging - ka wehe ʻana i ka uhi nui e hōʻoia i ka mānoanoa like.
4. ʻO ka hoʻomaʻamaʻa ʻana - ka kuke ʻana ma ~300 °C no 15-30 mau minuke e hana i ke kiʻiʻoniʻoni kino. Hiki ke hoʻohana ʻia nā pālule lehulehu no nā māka hana kiʻekiʻe.

2.3 Nā Pōmaikaʻi Nui

• Kūleʻa ʻino maikaʻi loa: 1,000–2,000+ hola paʻakai paʻakai (ASTM B117) i ka ʻulaʻula - maʻamau 5-10 mau manawa ʻoi aku ka maikaʻi ma mua o ka hoʻoheheʻe zinc maʻamau.
• ʻAʻohe hydrogen embrittlement: He palekana ke kaʻina hana non-electrolytic no ke kila ikaika kiʻekiʻe (10.9 / 12.9).
• Ka uhi lahilahi (5–12 μm): Mālama i ka pono o ke kaula a me ka pololei o ke ana; ʻaʻole pono no ka overtapping.
• Kūleʻa wela kiʻekiʻe: Paʻa a hiki i 300 °C lawelawe mau.
• Ka uhi ʻokoʻa: Ke komo maikaʻi ʻana i loko o nā recesses, nā kaula, a me nā geometries paʻakikī ma o ka dip-spin.
• ʻO nā ʻāpana friction like ʻole: Hiki ke hui pū ʻia me nā pāpale lubricated no ka hana ʻana i ka torque-tension.

Kiʻi 3. Hoʻohālikelike hoʻohālike o ka hana paʻakai

2.4 Hoʻohālikelike me nā ʻāpana ʻē aʻe

Papa 1. Hoʻohālikelike hana o nā uhi paʻa maʻamau

3. Hex Nuts - Nā Kūlana, Ana a me ka ikaika

3.1 Nā Kūlana Kūikawā

ʻO nā maʻamau maʻamau no nā metric hex nuts ʻo ISO 4032 (style 1 regular nuts) a me ka mea kahiko akā hoʻohana nui ʻia ʻo DIN 934. Hōʻike kēia mau maʻamau i nā ana, hoʻomanawanui, a me nā māka huahana (A, B, C). Hōʻike ʻia nā papa waiwai no nā nati kila ma ISO 898-2 (e laʻa, nā papa 6, 8, 10, 12).

'Ōlelo Aʻo: ʻokoʻa iki ka DIN 934 a me ISO 4032 i nā ana o nā palahalaha no kekahi mau nui (e laʻa, M10, M12, M22). E hōʻoia mau i ka hoʻohālikelike i ka wā e hui pū ai i nā maʻamau.

3.2 Ana Anana Maʻamau (ISO 4032 Style 1)

Papa 2. Nā anana nut hex metric i koho ʻia (ISO 4032, mm). s = laula ma nā pā; e = laula ma na kihi; m = kiʻekiʻe nati.

3.3 Nā Papa Waiwai & Kūlike

Pono e hoʻohālikelike ʻia nā nati me ka ikaika o ka bolt e hōʻoia i ka pau ʻole o ka hui ma ke ʻano hoʻomalu (ʻoi aku ka maikaʻi ma ka bolt). Nā hui like maʻamau ma lalo o ISO 898-2:

• Papa Bolt 8.8 → Papa Nut 8 a ʻoi aku paha
• Papa Bolt 10.9 → Papa Nut 10 a ʻoi aku paha
• Papa Bolt 12.9 → Papa Nut 12

He mea waiwai nui ka uhi Dacromet no ka papa 10 a me 12 nati no ka mea, ʻaʻole i hoʻokomo ʻia ke kaʻina hana i ka pilikia hydrogen embrittlement e hiki ke hoʻololi i nā mea ikaika kiʻekiʻe.

4. Nā noi o Dacromet Hex Nuts

ʻOi aku ka maikaʻi o nā nati hex i uhi ʻia e Dacromet ma nā wahi a pau e koi ʻia ai ke kūpaʻa kiʻekiʻe o ka corrosion, ka pololei ʻana, a me ka hilinaʻi mechanical i ka manawa like:

Kaʻa a me ka lawe ʻana

ʻO nā ʻāpana Chassis, nā ʻōnaehana hoʻokuʻu, nā hui kaʻa, nā mea hoʻopaʻa mīkini, a me nā ʻāpana o lalo o ke kino i ʻike ʻia i ka paʻakai alanui a me nā wela kiʻekiʻe.

ʻEhu makani a me nā ʻoihana

ʻO nā bolts hale kiaʻi a me nā mea hoʻopaʻa paʻa no nā turbine makani uka a me waho, kahi e hiki ai i ka hoʻoheheʻe paʻakai ke ʻoi aku ma mua o 2,000 mau hola o ka pono palekana.

Hana & Mekini Kaumaha

ʻO nā pilina paʻa, nā mea mahiʻai, nā mīkini mining, a me nā mea hoʻokomo i waho e pili ana i ka ʻino a me ka ʻike kemika.

Kaiapuni moana a me ke kimika

ʻO nā lako paʻa, nā paepae o waho, a me nā lako hana kahi e hoʻohaʻahaʻa koke ai nā pale kuʻuna.

4.1 Nā Kūlana Koho

Papa 3. Ke alakaʻi koho wikiwiki no nā hua hex i uhi ʻia

5. Ka hopena

Hoʻohui nā hua hex Dacromet i ka hilinaʻi mechanical a me ka geometry maʻamau o nā nati hexagonal kuʻuna me ka pale ʻana i ka corrosion o ka ʻenehana zinc-aluminum flake. ʻO kā lākou ʻili lahilahi a ʻaʻahu e mālama i ka hoʻopili ʻana i ke kaula a me ke kūpaʻa ʻana o ka torque, ʻoiai e hāʻawi ana i ka hana paʻakai-paʻakai i ʻoi aku ka maikaʻi ma mua o ka plating zinc maʻamau a ʻaʻohe pilikia hydrogen-embrittlement.

No nā ʻenekinia a me nā mea kūʻai aku e hōʻike ana i nā mea hoʻopaʻa no ka automotive, ikehu hou, ʻenehana, a i ʻole nā ​​ʻoihana ʻoihana paʻakikī, hāʻawi ʻo Dacromet-coated hex nuts i kahi koena i hōʻoia ʻia o ka lōʻihi, pololei, a me ka maikaʻi o ke kumu kūʻai.

I ke koho ʻana i nā huahana, e hoʻopaʻa mau i ka pae o ka uhi ʻana (A/B a i ʻole ka like), ka helu paʻakai-paʻakai, friction coefficient (inā hoʻohana ʻia ka topcoat lubricated), a me ke kūlike me ka papa bolt male a me nā kūlana kaiapuni o ka noi hope.

Nānā & Kūlana: ISO 4032, ISO 898-2, DIN 934, ASTM B117, nā pepa ʻikepili hana no nā ʻōnaehana Dacromet / zinc-flake (e laʻa, DACROMET®, GEOMET®).