Hauv cov kav dej hlau ductile, cov khoom siv txuas (xws li bolts, nuts, thiab gaskets), txawm tias me me, yog cov khoom tseem ceeb rau kev ua kom nruj, kev ruaj khov ntawm cov qauv, thiab kev ua haujlwm zoo ntawm cov kav dej sib txuas. EN4016, "Cov kav dej hlau ductile, fittings, thiab accessories - Kev muab dej haus - Cov kev cai thiab cov txheej txheem sim," teeb tsa cov kev cai tshwj xeeb rau cov khoom siv txuas siv hauv cov kav dej no. Tsab xov xwm no muab cov ntaub ntawv yooj yim txog cov khoom siv txuas raws li tus qauv no.
Tus qauv EN4016 tsis yog tsuas yog npog xwbcov kav hlau ductilethiab cov khoom siv lawv tus kheej, tab sis kuj qhia meej txog kev ua tau zoo, cov ntaub ntawv, thiab kev tiv thaiv xeb ntawm cov kab ke txuas uas siv los txuas lawv (xws li bolts, txiv ntoo, thiab washers). Kev xaiv thiab siv cov fasteners uas ua raws li tus qauv no yog qhov tseem ceeb rau kev ua kom ntseeg tau tias ua raws li thiab kev nyab xeeb ntawm tag nrho cov kav dej.
Cov Kev Cai Tseem Ceeb rau Cov Khoom Siv Txuas
Raws li EN4016, cov khoom siv rau hauv cov kav dej hlau ductile (tshwj xeeb tshaj yog cov uas siv rau kev muab dej haus) yuav tsum ua tau raws li cov kev cai yooj yim hauv qab no:
1. Cov Khoom Siv thiab Cov Khoom Siv Kho Tshuab
- Cov ntsia hlau: feem ntau yuav tsum tau ua los ntawm cov ntaub ntawv uas muaj zog thiab tawv txaus, xws li cov hlau carbon lossis cov hlau sib xyaw. Lawv cov khoom siv kho tshuab qib yuav tsum yog tsawg kawg 8.8 (qhia txog lub zog tensile nominal ntawm 800 MPa thiab qhov piv ntawm lub zog tawm ntawm 0.8). Rau cov ntawv thov siab dua, cov ntsia hlau nrog lub zog ntawm 10.9 lossis siab dua yuav tsum tau ua.
- Cov txiv ntoo: yuav tsum phim cov qib khoom ntawm lub bolt, feem ntau siv cov txiv ntoo qib 8 lossis 10, kom ntseeg tau tias muaj kev sib txuas zoo thiab tiv thaiv kev tawm xov.
- Kev Ua Tau Zoo: yuav tsum muaj kev ua tau zoo thiab kev siv tshuab kom ntseeg tau tias tsis muaj qhov tsis zoo sab hauv.
2. Cov xovyuav tsum ua raws li ISO metric xov qauv (piv txwv li, ISO68-1, ISO261),yuav tsum huv si, tiav, thiab tsis muaj burrs, tawg, thiab lwm yam tsis zoo kom ntseeg tau tias kev sib txuas du ntawm lub bolt thiab txiv ntoo.
3. Qhov Loj thiab Kev kam rau siabyuav tsum ua raws li cov kev cai kam rau siab uas tau teev tseg hauv cov duab kos thiab cov qauv cuam tshuam (xws li EN ISO 4014 thiab EN ISO 4032) kom ntseeg tau tias muaj kev sib pauv thiab sib xws hauv kev sib dhos.
Vim tias cov kav dej hlau ductile feem ntau siv hauv av lossis hauv cov chaw noo noo, thiab vim tias lawv thauj dej haus, qhov kev tiv thaiv corrosion ntawm cov fasteners yog siab heev. EN4016 muaj cov cai nruj heev rau qhov no:
1. Kev Pheej Hmoo ntawm Kev Xeb
Cov khoom siv hlau carbon fasteners muaj kev cuam tshuam zoo rau kev xeb hluav taws xob hauv qhov chaw noo noo. Kev xeb hnyav tuaj yeem ua rau lub bolt tawg, qhov sib koom ua ke xau, thiab txawm tias lub yeeb nkab tsis ua haujlwm.
Rau kev sib cuag nrog dej haus, cov txheej tiv thaiv xeb yuav tsum tsis muaj tshuaj lom, tsis muaj ntxhiab, thiab tsis cuam tshuam rau qhov zoo ntawm dej.
2. Cov Tshuaj Pleev Xim Tiv Thaiv Kev Xeb Pom Zoo,EN 4016 pom zoo cov kev kho mob tiv thaiv xeb hauv qab no rau cov dej haus:
Kev kub-dip galvanizing (HDG): Qhov no yog ib txoj kev tiv thaiv uas siv ntau thiab zoo. Tom qab pickling thiab fluxing, cov fasteners raug muab tso rau hauv molten zinc los tsim ib txheej zinc-hlau alloy ntom ntom thiab ib txheej zinc ntshiab.
Qhov Yuav Tsum Tau Ua: Qhov tuab ntawm cov txheej galvanized yuav tsum ua tau raws li cov qauv tsim nyog (xws li ISO 10684), feem ntau xav tau qhov nruab nrab tuab tsawg kawg yog 50μm kom ntseeg tau tias muaj kev tiv thaiv xeb mus sij hawm ntev. Dacromet/Zinc-Chromium Txheej: Ib txheej txheej hydrogen-embrittlement-free corrosion-resistant, tsim los ntawm kev siv cov slurry uas muaj zinc hmoov, txhuas hmoov, thiab chromic acid thiab tom qab ntawd ci nws ntawm qhov kub siab.
Cov Zoo: Kev tiv taus xeb zoo heev (feem ntau zoo dua li kev kub-dip galvanizing ntawm qhov tuab sib npaug), tsis muaj kev pheej hmoo ntawm hydrogen embrittlement, thiab ib txheej txheej sib xws.
Ua raws li cov kev cai huv rau cov ntaub ntawv uas kov dej haus.
Txheej Epoxy: Ib daim zaj duab xis tiv thaiv epoxy resin tawv raug siv rau ntawm qhov chaw ntawm cov khoom siv khi siv cov txheej txheem xws li kev txau electrostatic.
Cov Zoo: Tiv taus tshuaj lom neeg zoo heev thiab zoo nkauj. Txawm li cas los xij, cov txheej yuav tsum zoo thiab tsis puas, vim qhov no tuaj yeem ua rau xeb.
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Lub sijhawm tshaj tawm: Cuaj hlis-19-2025
