Dacromet Flange Bolts

2026-11-09

1. Mawu Oyamba

M'mafakitale amakono, kukhulupirika kwa nthawi yayitali kwazitsulo zotsekedwa kumadalira kwambiri pakugwira ntchito chitetezo cha dzimbiri ndi ntchito yolimbana ndi dzimbiri. Kuyika kwa zinki kwachikhalidwe komanso kuthirira kotentha nthawi zambiri kumakhala kocheperako m'malo ankhanza kwambiri monga zomangamanga za m'mphepete mwa nyanja, nsanja zakunyanja, malo opangira mankhwala, ndi malo olowera m'magalimoto omwe amakhala ndi mchere wamsewu. Maboti a Dacromet flange phatikizani ubwino wamapangidwe a flange-head design ndi zabwino kwambiri zoteteza dzimbiri ndi anti-corrosion katundu wa zinc-aluminium flake zokutira.

Dacromet (yomwe imatchedwanso kuti zinc flake coating) ndi mankhwala osagwiritsa ntchito electrolytic, opangidwa ndi madzi. Imayika wosanjikiza wopyapyala koma wothandiza kwambiri wa zinc ndi aluminium flakes womangidwa ndi chromate matrix, zomwe zimapereka mwapadera. chitetezo chotchinga, chitetezo cha cathodic cha nsembe,ndi kudzichiritsa kukhumba. Zogwiritsidwa ntchito pazitsulo za flange, zokutira izi zimapereka zodalirika kwa nthawi yayitali kukana dzimbiri popanda kusokoneza kukwanira kwa ulusi, kulondola kwa torque, kapena kuyambitsa chiopsezo cha hydrogen embrittlement.

Chithunzi 1. Maboti olimba kwambiri a Dacromet okhala ndi yunifolomu yasiliva-grey anti-corrosion finish

2. Flange Bolts ndi Dacromet Coating Technology

Bawuti ya flange imakhala ndi flange yozungulira pansi pamutu wa hexagonal yomwe imagwira ntchito ngati chochapira chomangidwira. Kapangidwe kameneka kamagawa mphamvu ya clamping pamwamba pa malo okulirapo, kuchepetsa kuwonongeka kwapamtunda ndikuwongolera kukana kumasuka kochititsidwa ndi kugwedezeka. Mabotiwa akalandira zokutira za Dacromet, kuphatikiza kumapereka cholumikizira chomwe chimapereka kudalirika kwamakina komanso apamwamba. odana ndi dzimbiri ndi zosagwira dzimbiri ntchito. Chophimba chopyapyala (nthawi zambiri 5-12 μm) chimasunga ulusi wolondola wa geometry.

2.1 Mapangidwe Opaka ndi Njira

Dacromet ndi kubalalitsidwa kwamadzi kwa zinc flakes, aluminium flakes, ndi chromium oxides. Njira yosagwiritsa ntchito electrolytic imaphatikizapo: (1) kuyeretsa pamwamba popanda kuwotcha asidi; (2) kugwiritsa ntchito dip-spin, dip-drain kapena spray; ndi (3) kuchiritsa pafupifupi 300 ° C kuti muphatikize ma flakes mu zigawo zodutsana. The chifukwa zitsulo siliva-imvi filimu amapereka Mipikisano wosanjikiza kukana kwa okosijeni ndi wodalirika chotchinga chinyezi.

2.2 Njira Zotetezera Kuwonongeka

Dacromet amakwaniritsa mwapadera anti-corrosion Kuchita bwino pogwiritsa ntchito njira zitatu za synergistic:

Chitetezo Cholepheretsa: Kuphatikizika kwa zinki ndi ma aluminium flakes kumapanga chotchinga cha labyrinthine chomwe chimalepheretsa madzi, mpweya, ndi ma ion owononga monga ma chloride.
Chitetezo cha Nsembe (Cathodic): Zinc flakes amakonda corrodes, ndikuchita ngati nsembe ya anode yomwe imateteza gawo lapansi lachitsulo kuti lisapangike dzimbiri.
Passivation ndi Kudzichiritsa: Mankhwala a chromate amapanga filimu yokhazikika ndipo amatha kusamukira ku zokopa zazing'ono, kupereka mosalekeza kupewa dzimbirindi kuthekera kodzikonza.

3. Ubwino waukulu wa Dacromet Flange Bolts

Poyerekeza ndi mankhwala ochiritsira wamba, ma bolts a Dacromet flange amapereka kuphatikiza kwapadera kwa magwiridwe antchito:

Kulimbana Kwapamwamba Kwambiri Kupopera Mchere: Nthawi zambiri amadutsa maola a 1,000-1,200 akuyesa kupopera mchere wosalowerera ndale (ISO 9227) popanda dzimbiri lofiira - nthawi zambiri 7-10 kuposa zokutira zamagalasi zamagetsi.
Chiwopsezo cha Zero Hydrogen Embrittlement: Njira yosagwiritsa ntchito electrolytic imachotsa m'badwo wa haidrojeni, ndikupanga Dacromet kukhala yabwino kwa Grade 8.8, 10.9, ndi 12.9 bolts.
Zotikira Zopyapyala, Zokhazikika: Pa 5-12 μm yokha, zokutira zimasunga kulondola kwa ulusi ndikulola mtedza wamba kuti ugwiritsidwe ntchito popanda kugogodanso.
Kulimbana Kwabwino Kwambiri Kutentha: Imateteza kukhulupirika mpaka 300 ° C, kuposa zokutira wamba za zinki zomwe zimatsika pamwamba pa 100-200 ° C.
Kupambana Kwambiri kwa Weatherability ndi Chemical Resistance: Imatsutsa mlengalenga wa mafakitale, mchere wamsewu, ma acid ofatsa ndi alkalis pomwe ikupereka nthawi yayitali odana ndi dzimbirintchito panja.
Kuwongolera Kwabwino Kwambiri: Ndi ma topcoats osankhidwa mwasankha, kukokana kumatha kuwongoleredwa mwamphamvu kuti muchepetse katundu wodalirika.

4. Kufananiza kwa Magwiridwe ndi Zovala Zachikhalidwe

Gome ili m'munsili likufotokoza mwachidule kusiyana kwakukulu mu chitetezo cha dzimbiri ndi zizindikiro zokutira.

Katundu	Dacromet	Electro-Galvanizing	Hot Dip Galvanizing
Kupaka makulidwe	5-12 m	5-15 m	40-80 mm
Kupopera mchere (palibe dzimbiri)	≥1,000–1,200 h	100-300 h	500-800 h
Kuchuluka kwa Hydrogen	Palibe	Kuopsa kwakukulu	Kuopsa kwapakatikati
Kukaniza Kutentha	Kufikira 300 ° C	≤100°C	≤200°C
Thread Fit Impact	Zochepa / zabwino kwambiri	Pang'ono	Nthawi zambiri amafuna kugogodanso

Table 1. Kufananiza kwa Dacromet ndi zokutira wamba zinki kwa zomangira.

5. Zomwe Zimagwira Ntchito

Maboti a Dacromet flange amatchulidwa kulikonse komwe ali pamwamba kukana dzimbiri ziyenera kuphatikizidwa ndi kudalirika kwamakina:

Zagalimoto: Chassis, kuyimitsidwa, mabuleki ndi zida zamkati zomwe zimawululidwa ndi mchere wamsewu.
Mphamvu zamphepo & offshore: Tower flanges, misonkhano ya nacelle ndi malumikizano apangidwe mu saline atmospheres.
Zomanga ndi zomangamanga: Milatho, nyumba za m'mphepete mwa nyanja, malo otetezera omwe amafunikira nthawi yayitali kupewa dzimbiri.
Makina olemera ndi njanji: Zipangizo m'malo a chinyontho kapena owopsa kwambiri anti-corrosionntchito ndi yofunika kwambiri.

6. Common Specifications

Maboti a Dacromet flange amapangidwa molingana ndi miyezo yayikulu yapadziko lonse lapansi komanso mphamvu zamagetsi:

Parameter	Mtundu / Makhalidwe
Miyezo	DIN 6921, ISO 4162, GB/T 5787 / 5789, ASME B18.2.1
Maphunziro Amphamvu	8.8, 10.9, 12.9 (mamita); SAE Giredi 5/8 (inchi)
Ulusi Diameter	M5–M24 (metric); 1/4"-5/8" (mfumu)
Utali Wautali	10 mm - 200 mm (kutalika komwe kulipo)
Kupaka makulidwe	Kawirikawiri 5-12 μm (zosiyana za A / B)
Maonekedwe	Metallic silver-gray (matte)

7. Unsembe Best Zochita & Mapeto

Kuti maximize the anti-corrosion moyo wautumiki wa mabawuti a Dacromet flange: gwiritsani ntchito mtedza wokutira wa Dacromet ndi makina ochapira ngati kuli kotheka; tsatirani ma torque ovomerezeka (kukangana kolamulirika kumathandizira kulemedwa kolondola kwa ma torque); pewani kuwonongeka kwakukulu kwa mawotchi pakugwira ntchito; ndi kusunga zomangira pauma musanayambe ntchito.

Mwachidule, ma Dacromet flange bolts amayimira njira yokhwima, yogwira ntchito kwambiri yomwe imakwaniritsa zofunikira ziwiri za kudalirika kwamakina komanso nthawi yayitali. chitetezo cha dzimbiri. Pophatikiza ubwino wogawa katundu wa kapangidwe kake ka flange ndi zokutira zopyapyala, zogwira mtima kwambiri za zinc-aluminium, zomangira izi zimapereka zabwino kwambiri. odana ndi dzimbiri ntchito, kuthetsa ziwopsezo za hydrogen embrittlement, ndikusunga kuwongolera koyenera.

M'malo omwe zomangira zamagalasi wamba kapena zotentha zoviika zimavutika msanga. dzimbiri ndi kuwonongeka - m'mphepete mwa nyanja, m'madzi, magalimoto, ndi mafakitale-maboti a Dacromet flange amapereka njira yotsimikiziridwa, yokhazikika. Zabwino zawo nyengo, kukana kwa okosijeni,ndi chitetezo cha nsembe makina amaonetsetsa moyo wotalikirapo wautumiki ndikuchepetsa mtengo wokonza, zomwe zimapangitsa kukhala chisankho chokondedwa kwambiri ndi mainjiniya ndi opanga padziko lonse lapansi.