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Taw qhia rau Dacromet Flange Bolts-High-Performance Fasteners rau Demanding Ib puag ncig
2026-09-09 IB
1. Taw qhia
Nyob rau hauv niaj hnub engineering thiab kev lag luam kev siv, kev ntseeg siab ntawm fastening systems yog ib qho tseem ceeb rau kev ncaj ncees, kev nyab xeeb, thiab kev ua haujlwm ntev. Ntawm ntau hom fasteners muaj, flange bolts tau txais txiaj ntsig tseem ceeb vim lawv cov qauv tsim thiab kev xa khoom zoo dua. Thaum cov bolts no txuas ntxiv nrog kev kho saum npoo av xws li Dacromet txheej, lawv tau dhau los ua qhov tshwj xeeb rau kev ua haujlwm hnyav.
Dacromet flange bolts muab cov cuab yeej zoo ntawm lub taub hau flanged tsim nrog kev tiv thaiv zoo tshaj plaws los ntawm zinc-aluminium flake coatings. Qhov kev sib xyaw ua ke no hais txog ob qho kev sib tw ntau tshaj plaws hauv kev siv thev naus laus zis: ua kom tau raws li lub zog clamping yam tsis muaj cov ntxhua khaub ncaws ntxiv, thiab ua kom muaj kev tiv thaiv ntev mus rau xeb thiab ib puag ncig kev puas tsuaj. Kab lus no muab cov ntsiab lus dav dav ntawm Dacromet flange bolts, npog lawv cov kev tsim kho, txheej txheej txheej txheem, kev ua haujlwm zoo, kev siv, thiab kev xav txog kev siv.
2. Nkag siab Flange Bolts
Lub flange bolt yog ib qho tshwj xeeb fastener uas muaj qhov dav, ncig flange nyob ncaj nraim hauv qab lub taub hau ntsia liaj qhov rooj. Qhov flange no ua haujlwm zoo ib yam li lub tshuab ntxhua khaub ncaws ua ke, faib cov clamping load hla thaj tsam loj dua. Los ntawm kev ua kom cov kabmob nto, flange bolts txo qhov kev pheej hmoo ntawm kev puas tsuaj rau cov ntaub ntawv sib koom thiab pab tiv thaiv lub taub hau ntsia hlau los ntawm rub los ntawm cov ntaub ntawv nyias lossis mos.
Cov yam ntxwv tseem ceeb ntawm flange bolts suav nrog:
Integrated flange: Tshem tawm qhov xav tau rau lub tshuab ntxhua khaub ncaws sib cais hauv ntau daim ntawv thov, ua kom yooj yim sib dhos thiab txo qhov suav.
Txhim kho load faib: Qhov chaw sib cuag loj dua txo qis hauv cheeb tsam kev ntxhov siab nyob rau ntawm qhov chaw mating.
Serrated xaiv: Ntau lub flange bolts suav nrog cov serrations (cov hniav) nyob rau hauv qab ntawm lub flange, uas khawb rau hauv qhov chaw los muab kev tiv thaiv tiv thaiv kev vibration-induced loosening.
Hom taub hau hom: Hexagonal taub hau flange bolts yog siv dav tshaj plaws, tso cai rau tus qauv ciaj ntswj lossis lub qhov (socket) installation.
Flange bolts yog tsim nyob rau hauv ntau qib zog (xws li Qib 8.8, 10.9, thiab 12.9 hauv metric systems) thiab cov ntaub ntawv, xws li carbon steel thiab alloy steel rau stainless hlau. Lawv versatility ua rau lawv haum rau automotive, kev tsim kho, machinery, thiab infrastructure tej yaam num.
3. Dacromet Txheej Technology
Dacromet (tseem hu ua DACROMET®) yog ib qho khoom siv uas tsis yog-electrolytic zinc-aluminium flake txheej txheej thaum chiv thawj tsim los ua kev ua haujlwm siab rau cov tsoos electroplating thiab kub-dip galvanizing. Cov txheej txheej muaj sib tshooj zinc thiab txhuas flakes dispersed nyob rau hauv ib tug inorganic binder, feem ntau muaj chromium tebchaw. Nws yog siv raws li dej-raws li slurry los ntawm dip-spin, tshuaj tsuag, los yog dip-drain txoj kev, ua raws li los ntawm kev kho (ci) ntawm qhov kub siab ntawm ib ncig ntawm 300 ° C.
Thaum lub sij hawm curing txheej txheem, txheej txheej tsim ib ntom, ntau txheej inorganic zaj duab xis uas chemically bonds rau cov hlau substrate. Cov txheej txheej tuab yog li ntawm 5 txog 12 micrometers (μm), uas yog thinner dua li kub-dip galvanizing txheej thaum muab kev tiv thaiv zoo dua. Qhov tshwm sim saum npoo muaj qhov tshwj xeeb xim hlau nyiaj-grey zoo li.
Cov txheej txheem tiv thaiv tseem ceeb ntawm Dacromet suav nrog:
Barrier tiv thaiv: The dense, overlapping flake structure creates a physical barrier that impedes the penetration of moisture, salts, and corrosive agents.
Sacrificial (cathodic) tiv thaiv: Zinc flakes nyiam corrode, tiv thaiv lub hauv paus steel substrate.
Passivation: Chromium compounds nyob rau hauv lub binder pab tsim ib tug ruaj khov passive txheej uas ntxiv txhim kho corrosion kuj.
4. Qhov zoo ntawm Dacromet Flange Bolts
Kev sib xyaw ua ke ntawm flanged tsim thiab Dacromet txheej muab ntau yam txiaj ntsig kev ua tau zoo uas ua rau cov fasteners tshwj xeeb tshaj yog muaj txiaj ntsig hauv kev thov:
1.Exceptional Corrosion Resistance: Dacromet coatings niaj hnub ua tiav ntau tshaj 1,000 xuab moos ntawm nruab nrab ntsev tsuag tshuaj tiv thaiv (ASTM B117 / ISO 9227) yam tsis muaj qhov pom ntawm xeb liab. Feem ntau, kev ua haujlwm nce mus txog 1,200-2,000 teev lossis ntau dua. Qhov no feem ntau yog 7 mus rau 10 npaug ntawm kev tiv thaiv los ntawm cov pa electro-galvanizing.
2.No Hydrogen Embrittlement: Tsis zoo li cov txheej txheem electroplating uas cuam tshuam nrog acid pickling thiab electrolytic deposition, Dacromet daim ntawv thov tsis qhia hydrogen rau hauv cov hlau. Qhov no ua rau nws zoo tagnrho rau cov khoom siv zog siab (Qib 10.9, 12.9, thiab ASTM A490), qhov twg hydrogen embrittlement tuaj yeem ua rau ncua sij hawm tawg.
3.High Temp Resistance: Cov txheej txheem tseem ruaj khov thiab tiv thaiv ntawm qhov kev pabcuam txuas ntxiv mus txog li 300 ° C (572 ° F), deb tshaj qhov kub txwv ntawm feem ntau zinc electroplated txheej.
4.Thin, Uniform Txheej: Nrog ib tug raug thickness ntawm tsuas yog 5-12 μm, lub txheej muaj tsawg heev cuam tshuam rau xov qhov ntev thiab haum. Cov txiv ntoo txheem feem ntau tuaj yeem siv yam tsis muaj rov tapping lossis hloov kho, tsis zoo li cov txheej tuab tuab ntawm cov galvanized.
5.Zoo Mechanical thiab Chemical Resistance: Cov txheej txheem nthuav tawm muaj zog adhesion, tiv thaiv kev puas tsuaj me me thaum tuav thiab teeb tsa, thiab kev sib raug zoo nrog ntau yam tshuaj, roj, thiab cov kuab tshuaj.
6.Controlled Friction yam ntxwv: Nrog rau qhov tsim nyog topcoats los yog lubricants, cov coefficient ntawm kev sib txhuam tuaj yeem tsim kom muaj kev sib raug zoo torque-tension, txhim kho kev sib koom ua ke.
7. Ib puag ncig thiab txheej txheem txiaj ntsig: Raws li cov txheej txheem tsis-electrolytic, dej-raws li cov txheej txheem, Dacromet tsim cov khoom pov tseg tsawg dua li cov txheej txheem plating thiab tau txais kev pom zoo tias yog kev xaiv ib puag ncig ntau dua (txawm tias cov qauv qub muaj hexavalent chromium; niaj hnub sib txawv thiab lwm txoj hauv kev txuas ntxiv mus rau kev cuam tshuam ib puag ncig qis).
5. Kev sib piv kev ua haujlwm
Cov lus hauv qab no qhia txog cov yam ntxwv ua tau zoo ntawm Dacromet coatings piv nrog cov pa zinc plating thiab kub-dip galvanizing:
| Khoom | Dacromet | Electro-galvanizing | Kub-dip Galvanizing |
| Txheej Thickness | 5-12 m | 5-15 hli | 45-85 hli |
| Salt Spray (tsis muaj xeb liab) | ≥1,000–1,200 h | 100-300 hnub | 500-800 h |
| Hydrogen Embrittlement Risk | Tsis muaj | Siab (yuav tsum tau ci) | Nruab nrab |
| Max Nruam Temp. | ~ 300 ° C | ~ 100 ° C | ~ 200 ° C |
| Xov Fit Impact | Tsawg kawg | Tsawg | Qhov tseem ceeb |
| Haum rau High-Strength Bolts | Zoo heev | Txwv tsis pub | Yuav tsum ceev faj |
Nco tseg: Kev ua tau zoo tiag tiag sib txawv nrog qib txheej, thickness, topcoat, substrate npaj, thiab cov kev xeem tshwj xeeb. Cov ntaub ntawv yog tus sawv cev ntawm cov txiaj ntsig kev lag luam.
6. Xaus
Dacromet flange bolts sawv cev rau kev ua tau zoo fastening kev daws teeb meem uas ua tiav kev sib koom ua ke ntawm kev tsim kho zoo nrog cov cuab yeej tiv thaiv corrosion siab heev. Kev sib xyaw flange txhim kho cov khoom xa tawm thiab tuaj yeem txo qhov xav tau ntawm cov ntxhua khaub ncaws sib cais, thaum lub nyias nyias tseem ua tau zoo Dacromet zinc-aluminium flake txheej muab kev tiv thaiv zoo rau ntsev tsuag, av noo, tshuaj, thiab kub siab - yam tsis muaj hydrogen embrittlement txaus ntshai cuam tshuam nrog cov tsoos electroplating.
Cov yam ntxwv no ua rau Dacromet flange bolts tshwj xeeb tshaj yog haum rau tsheb, lub zog tauj dua tshiab, kev tsim kho, kev ua liaj ua teb, dej hiav txwv, thiab kev lag luam uas siv lub neej ntev thiab kev cia siab nyob rau hauv cov xwm txheej hnyav yog qhov tseem ceeb. Raws li kev tswj hwm ib puag ncig thiab kev cia siab ua haujlwm tau nce ntxiv, kev siv cov hlau tsis muaj hluav taws xob zinc flakes xws li Dacromet yuav tsum nyob twj ywm ib qho kev xaiv tseem ceeb rau cov kws tsim khoom tshwj xeeb rau cov fasteners tseem ceeb.
Thaum xaiv Dacromet flange bolts, ua tib zoo saib xyuas qib ntawm cov khoom siv, txheej txheej, cov qauv ntsuas, thiab kev teeb tsa yuav ua kom pom kev ua tau zoo thiab ua haujlwm ntev hauv daim ntawv thov.
