ʻO Dacromet Flange Bolts

2026-11-09

1. Hoʻolauna

I nā noi ʻoihana hou, ʻo ka lōʻihi o ka paʻa ʻana o nā hui bolted e hilinaʻi nui i ka pono pale ʻino a hana kūʻē i ka ʻōpala. ʻO ka hoʻoheheʻe zinc kuʻuna a me ka galvanizing wela e hāʻule pinepine i nā kaiapuni koʻikoʻi loa e like me nā ʻōnaehana kahakai, nā kahua o waho, nā mea kanu kemika, a me nā kino o lalo o nā kaʻa i ʻike ʻia i nā paʻakai alanui. ʻO nā bolts flange Dacromet hoʻohui i nā pono hoʻolālā o ka hoʻolālā flange-head me ka mea koʻikoʻi pale-rust a kuʻi-corrosion nā waiwai o nā uhi palaki zinc-aluminum.

ʻO Dacromet (kahi i ʻike ʻia ʻo ka zinc flake coating) kahi lāʻau lapaʻau non-electrolytic, ma ka wai. Hoʻopaʻa ʻo ia i kahi ʻāpana lahilahi akā maikaʻi loa o ka zinc a me nā flakes alumini i hoʻopaʻa ʻia e kahi matrix chromate, e hāʻawi ana i kahi ʻokoʻa. pale pale, pale cathodic kaumaha, a hoʻōla hoʻōla iā ia iho. Hoʻopili ʻia i nā kī flange, hāʻawi kēia uhi i ka hilinaʻi lōʻihi pale pale me ka hōʻole ʻole ʻana i ke kūpono o ke kaula, ka pololei o ka torque, a i ʻole ka hoʻokomo ʻana i ka pilikia hydrogen embrittlement.

Kiʻi 1. ʻO nā bolts i uhi ʻia ʻo Dacromet ikaika kiʻekiʻe me ka hoʻopau anti-corrosion kala-hina.

2. ʻO nā ʻenehana Flange Bolts a me Dacromet Coating Technology

Hoʻokomo ʻia kahi ʻāpana flange i kahi flange pōʻai hoʻohui ma lalo o ke poʻo hexagonal e hana ana ma ke ʻano he mea holoi i kūkulu ʻia. Hāʻawi kēia hoʻolālā i ka ikaika clamping ma luna o kahi ʻili nui, e hōʻemi ana i ka pōʻino o ka ʻili a me ka hoʻomaikaʻi ʻana i ke kū'ē ʻana i ka wehe ʻana i ka vibration. I ka loaʻa ʻana o kēia mau bolts i kahi uhi Dacromet, e hāʻawi ka hui ʻana i kahi mea paʻa e hāʻawi ana i ka hilinaʻi mechanical a me ka maikaʻi. kūʻokoʻa a pale ʻino hoʻokō. ʻO ka uhi lahilahi (maʻamau 5-12 μm) mālama i ka geometry milo pololei.

2.1 Ka Hoʻohui a me ke Kaʻina Hana

ʻO Dacromet kahi hoʻopuehu wai o ka zinc flakes, alumini flakes, a me chromium oxides. ʻO ke kaʻina hana non-electrolytic ka mea maʻamau: (1) ka hoʻomaʻemaʻe ʻana i ka ʻili me ka ʻole o ka pickling acid; (2) hoʻohana ʻia e ka dip-spin, dip-drain or spray; a me (3) ho'ōla ma kahi o 300°C no ka hoʻohui ʻana i nā ʻōpala i loko o nā papa ʻāwili. Hāʻawi ka kiʻiʻoniʻoni kala-hina metala i nā ʻāpana he nui pale ʻana i ka oxidation a he hilinaʻi pale wai.

2.2 Mechanisms of Corrosion Protection

Loaʻa ʻo Dacromet i kahi kūlana kūikawā kuʻi-corrosion hana ma o ʻekolu hana synergistic:

Palekana pale: Hoʻokumu ʻia nā ʻāpana zinc a me nā alumini i kahi pale kino labyrinthine e pale ai i ka wai, oxygen, a me nā ion corrosive e like me nā chlorides.
Palekana Mohai (Cathodic): ʻOi aku ka maikaʻi o nā ʻōpala Zinc, e hana ana ma ke ʻano he anode mōhai e pale ai i ka substrate kila mai ka hoʻokumu ʻana i ka ʻōpala.
ʻO ka Passivation a me ka ho'ōla pilikino: Hoʻokumu nā pūhui Chromate i kahi kiʻiʻoniʻoni passive a hiki ke neʻe i nā ʻōpala liʻiliʻi, e hāʻawi mau ana pale ʻana i ka rusta me ka hiki ke hooponopono iho.

3. Nā Pōmaikaʻi Nui o Dacromet Flange Bolts

Hoʻohālikelike ʻia me ka mālama ʻana i ka ʻili maʻamau, hāʻawi ʻo Dacromet flange bolts i kahi hui kūʻokoʻa o nā pono hana:

ʻOi aku ka maikaʻi o ka pāpaʻi paʻakai: ʻOi aku ka maʻamau ma mua o 1,000–1,200 mau hola o ka hoʻāʻo ʻana i ka paʻakai paʻakai kūʻokoʻa (ISO 9227) me ka ʻulaʻula ʻole—pinepine 7-10 mau manawa ʻoi aku ka maikaʻi ma mua o nā pale uila-galvanized.
ʻO ka pilikia o ka hoʻoheheʻe ʻia ʻana o ka hydrogen: Hoʻopau ke kaʻina hana non-electrolytic i ka hana hydrogen, hana ʻo Dacromet i mea kūpono no ka ikaika kiʻekiʻe Grade 8.8, 10.9, a me 12.9 bolts.
ʻO ka uhi ʻili lahilahi, kūpaʻa ʻia: Ma ka 5-12 μm wale nō, mālama ka uhi i ka pololei o ke kaula a hiki ke hoʻohana ʻia nā nati maʻamau me ka ʻole o ka paʻi hou ʻana.
Palena wela maikaʻi loa: Mālama i ka pono palekana a hiki i 300°C, ʻoi aku ka maikaʻi ma mua o nā uhi zinc maʻamau i hoʻohaʻahaʻa ʻia ma luna o 100-200°C.
ʻOi aku ka maikaʻi o ka Weather a me ke kūʻē ʻana i nā kemika: Kū'ē i nā lewa ʻoihana, nā paʻakai alanui, nā ʻakika māmā a me nā alkali i ka wā e hāʻawi ana i ka wā lōʻihi kūʻokoʻahana ma waho.
Hoʻomalu Friction maikaʻi: Me nā kapa lubricated koho, hiki ke hoʻopaʻa paʻa ʻia ka coefficient o ka friction no ka ukana paʻa pono.

4. Hoʻohālikelike Hoʻohālikelike me nā Kāpena Kuʻuna

Hōʻuluʻulu ka papa ma lalo i nā ʻokoʻa nui ma pale ʻino a me nā hiʻohiʻona uhi.

Waiwai	ʻO Dacromet	Electro-Galvanizing	Hoʻohu wela
Mānoanoa uhi	5–12 μm	5–15 μm	40–80 μm
Paʻakai paʻakai (ʻaʻohe ʻula ʻula)	≥1,000–1,200 hola	100–300 hola	500–800 hola
Hoʻohāhā ʻana i ka waihā	ʻAʻohe	Pilikia kiʻekiʻe	Pilikia waena
Kū'ē wela	A hiki i 300°C	≤100°C	≤200°C
Pilikia Uila	Ka liʻiliʻi / maikaʻi loa	liʻiliʻi	Pono pinepine e hoʻopili hou

Papa 1. Hoʻohālikelike ka hana ʻana o Dacromet me nā pale zinc maʻamau no nā mea paʻa.

5. Nā noi maʻamau

Hōʻike ʻia nā bolts flange Dacromet ma nā wahi kiʻekiʻe pale ʻino pono e hui pū me ka hilinaʻi mechanical:

Kaʻa: ʻO Chassis, hoʻokuʻu, ʻōnaehana kaʻa a me nā ʻāpana o lalo o ke kino i ʻike ʻia i ka paʻakai alanui.
Ike makani a me waho: ʻO nā flanges hale kiaʻi, nā hui nacelle a me nā pilina pili i ka lewa paʻakai.
Kūkulu a me nā ʻoihana: ʻO nā alahaka, nā hale kahakai, nā kiaʻi e koi ana i ka wā lōʻihi pale ʻana i ka rust.
Mekini kaumaha & kaʻaahi: ʻO nā lako ma nā wahi haʻahaʻa a i ʻole nā mea hana kemika ma kahi kuʻi-corrosionkoʻikoʻi ka hana.

6. Nā kikoʻī maʻamau

Hana ʻia ʻo Dacromet flange bolts i nā kūlana honua nui a me nā māka ikaika:

ʻĀpana	Laulā / Waiwai maʻamau
Nā kūlana	DIN 6921, ISO 4162, GB/T 5787 / 5789, ASME B18.2.1
Papa Ikaika	8.8, 10.9, 12.9 (metric); SAE Papa 5 / 8 (ini)
Anawaena Uila	M5–M24 (metric); 1/4"–5/8" (imperial)
Ka lōʻihi	10 mm – 200 mm (loaʻa nā lōʻihi maʻamau)
Mānoanoa uhi	ʻO ka maʻamau 5–12 μm (nā ʻano ʻokoʻa o ka papa A / B)
Ka nana aku	Metala hina-hinahina (matte)

7. Hoʻokomo ʻana i nā hana maikaʻi loa a me ka hopena

E hoonui i ka kuʻi-corrosion ke ola lawelawe o Dacromet flange bolts: e hoʻohana i nā nati i uhi ʻia Dacromet a me nā mea holoi ma kahi hiki; e hahai i nā koina torque i manaʻo ʻia (kākoʻo ka friction i hoʻopaʻa ʻia i ka hoʻouka paʻi pololei); pale i ka pōʻino mechanical nui i ka wā o ka lawelawe ʻana; a mālama i nā mea hoʻopaʻa ma kahi maloʻo ma mua o ka hoʻohana ʻana.

I ka hōʻuluʻulu manaʻo, ʻo Dacromet flange bolts e hōʻike ana i kahi hopena hoʻopaʻa paʻa kiʻekiʻe e hoʻokō pono i nā koi ʻelua o ka hilinaʻi mechanical a me ka wā lōʻihi. pale ʻino. Ma ka hoʻohui ʻana i nā pōmaikaʻi hoʻoili ukana o ka hoʻolālā flange integral me kahi ʻāpana zinc-aluminum flake lahilahi a maikaʻi loa, hāʻawi kēia mau mea hoʻopaʻa i ka nani. kūʻokoʻa ka hana, hoʻopau i nā pilikia embrittlement hydrogen, a mālama i ka mana pololei.

I nā wahi kahi e pilikia ai nā mea hoʻopaʻa uila electro-galvanized a i ʻole hot-dip galvanized. ʻōpala a me ka hoʻohaʻahaʻa—ke kahakai, kai, kaʻa, a me nā ʻoihana ʻenehana—ʻo Dacromet flange bolts e hāʻawi i kahi ʻokoʻa i hōʻoia ʻia a paʻa. ʻO kā lākou maikaʻi hikiwawe, pale ʻana i ka oxidation, a hoomalu mohai ʻO nā mīkini e hōʻoia i ka lōʻihi o ka lawelawe ʻana a me ka hōʻemi ʻana i nā kumukūʻai mālama, e hoʻolilo iā lākou i koho makemake nui ʻia no nā ʻenekinia a me nā mea hoʻolālā honua.