Dacromet Flange Bolts: Kev Taw Qhia Txog Kev Ua Haujlwm Zoo Los Tiv Thaiv Corrosion Fasteners

Xyoo 2026-10-16

1. Taw qhia rau Dacromet Flange Bolts

Hauv cov ntawv thov kev lag luam niaj hnub no, kev ntseeg siab ntawm cov tshuab fastening yog qhov tseem ceeb. Ntawm cov kev daws teeb meem tshaj plaws niaj hnub no yog Dacromet flange bolts. Cov bolts tshwj xeeb no muab cov khoom siv zoo ntawm tus qauv flange nrog qhov tshwj xeeb anti-corrosion thiab anti-xeb Cov khoom ntawm Dacromet txheej tshuab.

Lub flange ntsia liaj qhov rooj nta ib lub tshuab ntxhua khaub ncaws zoo li flange hauv qab lub taub hau. Qhov kev tsim no faib cov clamping load rau ntawm thaj chaw loj dua, txo qhov kev pheej hmoo ntawm kev puas tsuaj rau saum npoo, thiab feem ntau tshem tawm qhov xav tau ntawm lub tshuab ntxhua khaub ncaws. Thaum no flange bolt raug kho nrog Dacromet - ib qho uas tsis yog-electrolytic zinc-aluminium flake txheej - nws dhau los ua ib qho kev ua tau zoo fastener muaj peev xwm tiv taus qhov hnyav hnyav rau lub sijhawm ntev.

Dacromet txheej, tseem hu ua zinc flake txheej, muab kev tiv thaiv zoo tiv thaiv xeb thiab xeb. Nws tau hais dav dav rau cov bolts muaj zog (Qib 8.8, 10.9, thiab 12.9) siv hauv tsheb, kev tsim kho, dej hiav txwv, cua zog, thiab kev siv tshuab ua haujlwm uas tsoos zinc plating lossis kub-dip galvanizing yuav luv luv.

Dacromet Flange bolts Ib qho Kev Taw Qhia Kom Zoo (1)

2. Dacromet Txheej yog dab tsi?

Dacromet yog ib qho inorganic, dej-raws li txheej txheej txheej txheem feem ntau ntawm zinc thiab txhuas flakes raug tshem tawm hauv chromium-muaj binder. Cov txheej txheem yog siv los ntawm dip-spin, tshuaj tsuag, lossis dip-drain txoj kev thiab tom qab ntawd kho ntawm qhov kub siab (feem ntau 300-320 ° C). Cov txheej txheem no ua rau nyias, ntom, ntau txheej thaiv (feem ntau 4-8 μm tuab) uas sib txuas nrog cov hlau substrate ntawm lub ntsia liaj qhov rooj.

Tsis zoo li cov pa electroplating, cov txheej txheem Dacromet tsis koom nrog acid pickling lossis electrolysis. Yog li ntawd, nws qhia tsis muaj hydrogen embrittlement kev pheej hmoo - qhov kev txiav txim siab kom zoo dua rau high-tensile bolts uas yuav tsum muaj kev ntseeg ruaj khov nyob rau hauv high preloading thiab cyclic loading.

Dacromet Flange Bolts Ib qho Kev Taw Qhia Kom Zoo (2)

Cov yam ntxwv tseem ceeb ntawm Dacromet Txheej ntawm Bolts

Superior corrosion kuj: Feem ntau tshaj li 1,000 xuab moos ntawm kev kuaj tshuaj ntsev nruab nrab (ASTM B117 / ISO 9227) yam tsis muaj xeb liab.
Nyias thiab niaj hnub zaj duab xis: Tsuas yog 4-8 μm tuab, khaws cia cov xov zoo ntawm lub bolt.
Kub kub kuj: Tswj kev tiv thaiv kev ua haujlwm txog li 300 ° C kev pabcuam txuas ntxiv.
Cov tshuaj tiv thaiv zoo heev: Tiv thaiv txoj kev ntsev, cov kua hauv tsheb, cov kua qaub me me, thiab cov cua hauv kev lag luam.
Tswj kev sib txhuam: Kev sib raug zoo torque-nrhiav kev sib raug zoo rau txhim khu kev qha bolt zawm.
Silver-grey metallic tsos: Uniform, matte tiav uas kuj pleev xim.

3. Qhov zoo ntawm Dacromet Flange Bolts

Dacromet flange bolts muab kev sib xyaw tshwj xeeb ntawm cov khoom siv thiab kev tiv thaiv saum npoo uas ua rau lawv nyiam tshaj cov pa coated bolts hauv qhov xav tau ib puag ncig.

Exceptional Anti-Corrosion thiab Anti-xeb Performance

Cov txheej txheem ntau txheej zinc-aluminium flake ntawm Dacromet tsim ob qho tib si cuam tshuam thiab cuam tshuam rau kev txi. Qhov no dual mechanism muab 7 rau 10x corrosion kuj ntawm tsoos electro-galvanized txheej. Cov khoom zoo Dacromet flange bolts tuaj yeem ua tiav ntau dua 1,200 xuab moos ntawm cov tshuaj tsw qab ntsev tsis muaj qhov pom ntawm xeb liab, ua kom muaj kev tiv thaiv xeb mus ntev txawm tias nyob hauv ntug hiav txwv, dej hiav txwv, lossis cov chaw ntsev hnyav heev.

Tsis muaj Hydrogen Embrittlement Risk

High-strength bolts (tshwj xeeb tshaj yog Qib 10.9 thiab 12.9) muaj kev cuam tshuam rau hydrogen embrittlement thaum ua tiav los ntawm cov pa electroplating. Cov txheej txheem Dacromet tshem tawm cov kua qaub pickling thiab electrolytic deposition, kom tsis txhob hydrogen qhia. Qhov no ua rau Dacromet nyiam txheej rau cov txheej txheem tseem ceeb thiab kev nyab xeeb ntsig txog flange bolts.

Nyias txheej Preserves xov haum

Nrog ib tug raug thickness ntawm tsuas yog 4-8 μm, Dacromet txheej tsis ho hloov lub suab txoj kab uas hla ntawm lub bolt threads. Qhov no tso cai rau siv cov txheej txheem ceev yam tsis tas yuav tsum tau overtapping, uas yog feem ntau yuav tsum tau rau cov tuab kub-dip galvanized txheej. Qhov tshwm sim yog kev sib koom ua ke zoo dua, kev sib txuas ua ntej ua ntej, thiab kev sib dhos yooj yim ntawm flange bolts.

4. Kev sib piv ntawm Bolt Coatings

Cov lus hauv qab no piv Dacromet nrog lwm cov txheej txheem siv rau ntawm bolts:

Khoom	Dacromet	Electro-Zinc Plating	Kub-dip Galvanizing
Txheej Thickness	4-8 m	5-15 hli	40-80 m
Salt Spray Resistance (rau liab xeb)	≥ 1,000–1,200 h	100-300 hnub	500-800 h
Hydrogen Embrittlement Risk	Tsis muaj	Siab (yuav tsum tau ci)	Nruab nrab
Kub-kub Resistance	Txog li 300 ° C	≤ 120 ° C	≤ 200 ° C
Xov Fit Compatibility	Zoo heev (standard ceev)	Zoo	Yuav tsum tau overtapping
Haum rau High-Strength Bolts	Zoo tagnrho (10.9 / 12.9)	Txwv tsis pub	Nruab nrab

Table 1. Kev sib piv ntawm kev kho cov ntsia liaj qhov rooj.

5. Cov Lus Qhia Xaiv rau Dacromet Flange Bolts

Thaum qhia txog Dacromet flange bolts rau ib qhov project, xav txog cov hauv qab no kom ntseeg tau tias kev ua haujlwm zoo los tiv thaiv corrosion thiab kev ntseeg tau ntawm kev sib koom ua ke:

1. Corrosivity ntawm ib puag ncig: Cov ntug hiav txwv dej, dej hiav txwv, kev lag luam, lossis kev raug ntsev feem ntau ua rau pom zoo rau qib B lossis siab dua Dacromet txheej.

2. Bolt zog qib: Rau Qib 10.9 thiab 12.9 flange bolts, Dacromet tau pom zoo kom tshem tawm hydrogen embrittlement txaus ntshai.

3. Kub raug: Cov ntawv thov nce mus txog 250-300 ° C tau txais txiaj ntsig los ntawm Dacromet lub thermal stability.

4. Torque-tension yuav tsum: Qhia kom meej lub lubricated topcoat (piv txwv li, PLUS® los yog DACROLUB®) thaum lub preload tswj yog qhov tseem ceeb.

5.Compatibility nrog mating qhov chaw: Dacromet qhia tau hais tias zoo bimetallic compatibility nrog txhuas Cheebtsam, txo galvanic corrosion.

6. Xaus

Dacromet flange bolts sawv cev rau kev paub tab, kev ua haujlwm siab nrawm uas ib txhij hais txog kev sib koom ua ke ntawm kev ncaj ncees thiab kev tiv thaiv ntev ntev. Los ntawm kev sib txuas cov load-distributing zoo ntawm lub taub hau flange nrog qhov zoo tshaj plaws anti-corrosion thiab anti-xeb cov khoom ntawm zinc-aluminium flake txheej, cov bolts xa cov kev pabcuam txhim khu kev qha hauv qhov chaw nruj tshaj plaws.

Cov ntsiab lus tseem ceeb rau engineers thiab cov kws tshaj lij kev yuav khoom muaj xws li:

Dacromet muab 7-10 npaug ntawm corrosion kuj ntawm cov pa electro-zinc plating thaum tshuav nyias txaus los khaws cov qauv xov haum.
Cov txheej txheem tsis-electrolytic kiag li tshem tawm hydrogen embrittlement, ua rau nws zoo tagnrho rau lub zog siab flange bolts.
Zoo heev kub-kub stability (txog 300 ° C) thiab tshuaj tiv thaiv ntxiv nthuav daim ntawv thov possibilities.
Kev sib xyaw flange tsim ua kom yooj yim sib dhos thiab txhim kho kev sib koom ua haujlwm hauv kev vibration thiab cyclic loading.

Txawm hais tias siv nyob rau hauv tsheb chassis, offshore cua turbines, ntug dej hiav txwv infrastructure, lossis cov khoom siv hnyav, Dacromet flange bolts muab txoj hauv kev ua pov thawj rau kev ua haujlwm ntev dua, txo kev saib xyuas, thiab txhim kho kev nyab xeeb. Kev qhia qhov tseeb Dacromet qib thiab ua kom muaj kev tswj xyuas kom zoo yuav ua rau kom muaj txiaj ntsig zoo los tiv thaiv xeb thiab tiv thaiv corrosion uas cov bolts siab dhau tau tsim los xa.

Tsis Muaj. Tom ntej no.

Xov xwm tshiab