DACROMET HEX NUTS-He hoʻolauna piha i nā mea paʻa pale pale 

1. Hoʻolauna

ʻO nā nati hexagonal, i kapa ʻia ʻo hex nuts, ʻo ia kekahi o nā mea paʻa i hoʻohana nui ʻia i ka ʻenekinia 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, loaʻa kēia mau ʻāpana i ke kūpaʻa corrosion kūʻokoʻa, e kūpono ana iā lākou no nā kaiapuni koʻikoʻi e pili ana i ke kai, kaʻa kaʻa ma lalo o ke kino, a me nā noi hoʻolālā waho.

Hāʻawi kēia ʻatikala i kahi hoʻolauna ʻelua-kuanaʻike: ʻike mua i ka hoʻolālā kumu a me nā maʻamau o nā hua hex, a ʻo ka ʻimi ʻana i ka ʻenehana uhi Dacromet (zinc-aluminum flake) i hoʻonui nui i ko lākou lōʻihi a me ka hana.

1.1 He aha ka Hex Nuts?

ʻO ka nati hex he ʻano mea hoʻopaʻa me ka puka wili a me ke ʻano o waho hexagonal. Hiki i ka geometry ʻaoʻao ʻeono ke hoʻohana pono i ka torque me ka hoʻohana ʻana i nā wrenches maʻamau a i ʻole nā ​​kumu, e hāʻawi ana i ke komo maikaʻi ma nā wahi paʻa ʻoiai ke kūʻē nei i ka pōʻai ma lalo o nā ukana kiʻekiʻe. ʻAneʻane hoʻohana mau ʻia nā hua Hex me ka pahu male a i ʻole ka stud e hoʻopili i ʻelua a ʻoi aku paha nā mea.

ʻO nā hiʻohiʻona nui nā:

• Loko loko (metric a imperial paha) e pili ana i ka bolt
• ʻO ka laulā ma waena o nā pālahalaha (ka nui wili) a me ka mānoanoa i wehewehe ʻia e nā maʻamau
• Loaʻa i nā māka ikaika like ʻole (e laʻa, Papa 8, 10, Papa 5, 8)
• Nā mea maʻamau: ke kila kalapona, ke kila kila, ke kila kila

1.2 ʻO ke kuleana o ka uhi ʻana o Dacromet

ʻO Dacromet kahi ʻōnaehana hoʻoheheʻe zinc-aluminum flake proprietary (i hoʻomohala mua ʻia e Metal Coatings International) i hoʻohana ʻia ma ke ʻano he kiʻiʻoniʻoni lahilahi, non-electrolytic. Hāʻawi ia i ka pale corrosion ʻoi aku ka maikaʻi i hoʻohālikelike ʻia me ka zinc electroplating maʻamau a i ʻole ka wela-dip galvanizing, ʻoi aku hoʻi no nā mea hoʻopaʻa ikaika kiʻekiʻe kahi e pale ʻia ai ka hydrogen embrittlement. ʻIke pinepine ʻia ka uhi ʻana i ka metala hina-hinahina a he 5-12 μm wale nō ka mānoanoa, e mālama ana i ke kūpono o ke kaula a me ka pololei o ke ana.

2. Hex Nuts: Design, Standards & Dimensions

2.1 ʻAno Hex Nuts

Nui nā ʻano like ʻole e hoʻokō i nā pono hana like ʻole:

• Kūlana (Hoʻopau) Hex Nut - Ke kumu nui, ke ʻano maʻamau (ISO 4032 / DIN 934 / ASME B18.2.2).
• Heavy Hex Nut – ʻOi aku ka laulā ma waena o nā pā a ʻoi aku ka mānoanoa no nā noi hoʻolālā (e laʻa, ASTM A563).
• Jam (Thin) Nut - Hoʻemi ʻia ka mānoanoa no ka laka ʻana a i ʻole ka hoʻohana ʻana i kahi ākea.
• Nylon-Insert Lock Nut (Nylock) – Hiʻona laka paʻa-torque.
• Flange Nut - Hoʻohui ʻia ka maka holoi no ka hoʻonui ʻana i ka ukana.

2.2 Metric Hex Nut Ana (ISO 4032 / DIN 934)

Hōʻuluʻulu ka papa ma lalo i nā ana nui no nā nui metric maʻamau o nā nati hex maʻamau:

Papa 1: Koho ʻia nā anana nut hex (nā kumu waiwai ma muli o ISO 4032 / DIN 934).

2.3 Mākaʻikaʻi a me nā lako

Hoʻopili ʻia nā hua Hex e like me nā kūlana waiwai mechanical. Aia nā papa metric maʻamau i ka Papa 6, 8, a me 10 (ISO 898-2). ʻO nā papa kiʻekiʻe e pili ana i ka ukana hōʻoia kiʻekiʻe a me ka paʻakikī. No nā noi hoʻolālā, makemake ʻia nā hua hex kaumaha e like me nā kūlana ASTM A563 a i ʻole EN. ʻO ke kila kalapona ka mea kumu maʻamau; hoʻohana ʻia ke kila kila (A2/A4) i ka wā e koi ʻia ai ke kūpaʻa ʻana o ka corrosion, ʻoiai ʻo Dacromet-coated carbon steel ke hāʻawi pinepine nei i kahi ʻoi aku ka maikaʻi o ke kumu kūʻai.

3. ʻO ka ʻenehana hoʻopili ʻo Dacromet

3.1 Ka Hoʻohui a me ke ʻano

ʻO ka Dacromet kahi uhi wai, non-electrolytic i loaʻa i ka nui o ka zinc a me nā flakes alumini i hoʻopuehu ʻia i loko o kahi mea hoʻopili chromium-oxide inorganic. He lahilahi ka hopena o ke kiʻiʻoniʻoni (maʻamau 5-12 μm), ke kala metala ma ke ʻano, a hāʻawi i ka pale ʻāpana-nui:

• Ka pale pale - Hoʻokaʻawale nā ​​papa flake i ka substrate mai ka media corrosive.
• Palena Galvanic (ʻālana) - Hana ʻo Zinc ma ke ʻano he anode, ʻoi aku ka maikaʻi o ka corroding.
• Passivation - Hoʻopaneʻe nā ʻokikene metala i ka hopena ʻino.
• Hoʻoponopono ponoʻī - Neʻe nā Zinc oxides a me nā carbonates i nā wahi i poino.

3.2 Kaʻina Noi

ʻO ke kaʻina hana maʻamau e pale i ka pickling acid, a laila e hoʻopau i ka pilikia o ka hoʻoheheʻe hydrogen:

1. Ka hoʻomākaukau ʻana i ka ʻili: Alkaline degreasing + mechanical descaling (pana pana).
2. No ka hoʻopili ʻana: Dip-spin (mea maʻamau no nā mea hoʻopaʻa), ehu, a i ʻole hoʻoheheʻe.
3. Hoʻopau ʻia / hoʻomaloʻo mua i ka mahana haʻahaʻa e wehe i ka wai.
4. ʻO ka hoʻōla wela ma kahi o 280–320 °C e hana i ka matrix inorganic.

3.3 Hana ʻino

Hoʻomaʻamaʻa pinepine ʻia ka hana e ka hoʻāʻo ʻana i ka paʻakai paʻakai (ISO 9227 / ASTM B117). Hōʻike ʻia nā hopena maʻamau no nā ʻōnaehana Dacromet 320/500 ma lalo nei:

Papa 2: Hana ʻino maʻamau o nā uhi Dacromet (pili nā hopena i ka substrate, geometry, a me ke kaʻina hana).

ʻO nā mea maikaʻi ʻē aʻe e pili ana i ka pale ʻana i ka wela a hiki i 300 °C, hiki ke pena maikaʻi, ka coefficient hoʻomalu ʻia o ka friction (ʻoi aku me nā topcoats lubricated e like me PLUS a i ʻole DACROLUB), a me ka hoʻohālikelike ʻana me ka alumini (hoʻemi ʻia ka pōʻino galvanic corrosion).

4. Nā noi, hoʻohālikelike a me ka hopena

4.1 Hoʻohana maʻamau o Dacromet Hex Nuts

Ma muli o ko lākou hui pū ʻana o ka ikaika kiʻekiʻe, geometry pololei, a me ke kūpaʻa ʻana o ka corrosion me ka pilikia ʻole o ka hydrogen-embrittlement, ua wehewehe nui ʻia nā nati hex-coated Dacromet i:

• Automotive: chassis, underbody, engine and transmission fastener (pinepine Grade 10.9 / Class 10).
• Nā lako kai a me nā kahakai: nā kaʻa kaʻa, nā winch, nā lako hana.
• Kūkulu a me nā mea hana: nā hale kila waho, nā alahaka, nā pale.
• ʻO ka makani makani a me nā mīkini kaumaha: ʻike ʻia nā hui bolted ikaika kiʻekiʻe i ka wā.
• ʻO ke kaʻaahi a me nā mea mahiʻai e pono ai ke ola lōʻihi ma nā lewa corrosive.

4.2 Hoʻohālikelike me nā ʻāpana ʻokoʻa

Pākuʻi 3: ʻIke hoʻohālikelike o nā uhi paʻa maʻamau.

4.3 Ka hopena

ʻO Dacromet hex nuts e hōʻike ana i kahi hopena oʻo a kiʻekiʻe e hoʻohui i ka hilinaʻi mechanical o nā mea hoʻopaʻa hexagonal maʻamau me ka pale ʻana o ka zinc-aluminum flake kiʻekiʻe. ʻO kā lākou ʻili lahilahi a ʻaʻahu e mālama i ka geometry thread pololei a hoʻopau i nā hopohopo hydrogen-embrittlement e pili ana i nā kaʻina electrolytic, e kūpono loa ia no nā māka ikaika kiʻekiʻe i hoʻohana ʻia i nā noi waho palekana-koʻikoʻi a lōʻihi paha.

I ke koho ʻana i nā mea hoʻopaʻa, pono e noʻonoʻo nā ʻenekinia i ke kaiapuni corrosion kikoʻī, ka mahana o ka lawelawe pono, nā koi torque/friction, a me nā kumu kūʻai. I loko o nā papahana kaʻa kaʻa, moana, a me nā ʻenehana, hāʻawi ʻo Dacromet-coated hex nuts i kahi kaulike maikaʻi loa o ka hana, hilinaʻi, a me ka waiwai holoʻokoʻa o ke ola.

Ke hoʻomau nei nā hoʻoponopono kaiapuni i nā koho koho chromium-reduced a i ʻole chromium-free (e laʻa, Geomet® system), ʻo ka ʻohana pani zinc-flake ākea ka ʻenehana i makemake ʻia no nā ʻōnaehana hoʻopaʻa paʻa i ka corrosion hou.