Kub-dip galvanized bolts: Cov neeg saib xyuas tsis pom ntawm cov khoom siv

Nyob rau hauv niaj hnub industrial ntau lawm system, lubntsia liaj qhov roojRaws li qhov yooj yim tshaj plaws kev sib txuas tshuab, nws qhov kev ua tau zoo cuam tshuam ncaj qha rau kev ntseeg tau thiab kev nyab xeeb ntawm tag nrho cov khoom siv.Thaum cov tsoos carbon steel bolts corrode ntawm tus nqi ntawm 0.03-0.15mm ib xyoo nyob rau hauv qhov chaw ntub dej, kub-dip galvanized bolts qhia tau zoo heev nyob rau hauv ib puag ncig hnyav xws li cov cuab yeej siv tshuaj, cov khoom siv sab nrauv, thiab cov kav hlau txuas nrog lawv cov yam ntxwv tiv thaiv.Cov txheej txheem kev kho saum npoo no tsis yog tsuas yog txuas ntxiv lub neej kev pabcuam ntawm fasteners, tab sis kuj tseem ua lub luag haujlwm tseem ceeb hauv kev lag luam kev nyab xeeb.

1. Kev hloov tshiab hauv kev tiv thaiv hlau

Nyob rau hauv cov txheej txheem kub dip galvanizing, steel qhov chaw yog immersed nyob rau hauv molten zinc kua ntawm 450 ℃, thiab ntau txheej txheej tiv thaiv yog tsim los ntawm hlau-zinc alloy cov tshuaj tiv thaiv.Lub thickness ntawm cov ntshiab zinc txheej tsim nyob rau saum npoo tuaj yeem ncav cuag 60-80μm, deb tshaj li 5-15μm ntawm hluav taws xob galvanizing.Cov cuab yeej sib txuas ntawm cov hlau no ua rau cov txheej txheem kom muaj qhov adhesion ntawm 4000-6000psi thiab yuav tsis poob tawm txawm tias muaj kev sib txhuam nto tshwm sim thaum lub rooj sib dhos.Lub sacrificial anode tiv thaiv mechanism ntawm zinc txuas ntxiv mus ua lub luag hauj lwm nyob rau hauv lub puas txheej, nyiam noj zinc los ntawm electrochemical corrosion, thiab zoo ncua cov txheej txheem corrosion ntawm matrix hlau.

Nyob rau hauv qhov kev tsim kho ntawm tus choj hla hiav txwv, cov bolts zoo ib yam tshwm sim pom tseeb liab xeb nyob rau hauv Marine huab cua ib puag ncig rau 6 lub hlis, thaum lub kub-dip galvanized bolts tseem nyob twj ywm rau ntau tshaj 5 xyoo nyob rau hauv tib yam kev mob.Qhov kev tiv thaiv no tseem ceeb heev nyob rau hauv cov huab cua uas muaj leej faj, thiab kev tiv thaiv ntawm kub-dipped zinc txheej rau H2S, SO2 thiab lwm yam corrosive gases yog ntau tshaj 3 npaug ntawm cov txheej txheem.

Piv nrog dacromet txheej, kub-dip galvanizing muaj qhov pom tseeb zoo hauv kev puas tsuaj ua haujlwm.Lub torque shear quab yuam tsim los ntawm cov bolts thaum lub sij hawm installation ua rau micro-cracks nyob rau hauv lub dacromet txheej, thaum lub kub-dip galvanizing txheej tseem zoo ua tsaug rau nws metallurgical bonding zog.Nyob rau hauv kev co, kev tiv thaiv lub neej ntawm kub-dip galvanized bolts tuaj yeem ncav cuag 2-3 zaug ntawm kev kho dacromet.

2. Muab ob npaug rau kev ruaj ntseg ntawm cov qauv

Cov cuab yeej cuab tam ntawm bolts txhim kho los ntawm kub-dip galvanizing tshaj qhov kev cia siab.Qhov tsim ntawm zinc-hlau alloy txheej ua rau kom lub ntsej muag hardness rau 250-300HV, uas yog sib npaug rau 1.5 npaug ntawm hardness ntawm lub substrate.Hauv kev ntsuas kev vibration ntawm M24 specification bolts, kev kho kub galvanizing txhim kho cov kev ua haujlwm los tiv thaiv xoob li ntawm 30%, ua tsaug rau kev sib txhuam coefficient optimization ntawm txheej.Kev sib txhuam coefficient ntau ntawm cov txheej galvanizing yog 0.06-0.10, uas ua rau kev tswj xyuas ua ntej kom raug thiab txhim khu kev qha.

Qhov kev ua tau zoo tshwj xeeb tshaj yog nyob rau hauv ib puag ncig kub.Thaum qhov kev khiav hauj lwm kub ncav cuag 300 ℃, cov kub dip galvanizing txheej pib mus rau cov khoom diffusion thiab maj mam hloov mus rau hauv ib tug denser alloy qauv.Lub catalytic cracking unit ntawm petrochemical enterprise sivkub-dip galvanized bolts. Tom qab 30,000 teev ntawm kev ua haujlwm tas mus li ntawm 380 ℃, lub zog tuav tus nqi tseem siab dua 85%, uas yog siab dua li 50% kev tuav tus nqi ntawm cov bolts zoo tib yam.

Nws qhov kev ua tau zoo nyob rau hauv cov xwm txheej hnyav ua pov thawj nws qhov kev ntseeg tau.Cov ntsev tsuag qaug zog coupling xeem ntawm 10.9 siab zog bolts qhia tau hais tias lub neej qaug zog ntawm kub-dip galvanizing yog ncua los ntawm 40%.Kev tiv thaiv cathodic ntawm zinc txheej zoo inhibits qhov pib ntawm kev ntxhov siab corrosion tawg, qhia tshwj xeeb zoo hauv dynamic load ib puag ncig.

3. Efficiency kiv puag ncig ntawm kev lag luam txij nkawm

Tag nrho lub neej voj voog kev txheeb xyuas tus nqi qhia tau hais tias kub-dip galvanizing nce tus nqi pib los ntawm 15% -20%, tab sis txuas ntxiv txij li 2 xyoos mus rau ntau tshaj 10 xyoo.Tom qab cov cua ua liaj ua teb cov ntauwd tube txuas bolts tau hloov mus rau kub-dip galvanizing, tus nqi tu txhua xyoo raug txo los ntawm 70%, thiab tus nqi nqa tau txais kev cawmdim dhau 20-xyoo kev pabcuam lub neej yog ntau tshaj 5 zaug ntawm thawj zaug peev.Qhov txiaj ntsig zoo ntawm tus nqi no tshwj xeeb yog qhov tseem ceeb hauv cov txheej txheem loj.

Cov txiaj ntsig ib puag ncig tsis tuaj yeem tsis quav ntsej ib yam nkaus.Zinc siv tus nqi ntawm kub dip galvanizing txheej txheem yog ntau tshaj 98%, uas yog ntau tshaj 60% ntawm dacromet txheej.Chromium-dawb kev kho mob zam tsis txhob hnyav hlau paug, thiab zinc vapor rov qab tshuab ua kom emissions qis dua 5mg / m³.Lub zog noj ntawm tag nrho cov txheej txheem yog 30% qis dua li cov hmoov txau, uas yog nyob rau hauv txoj kab nrog txoj kev loj hlob ntawm ntsuab manufacturing.

Nyob rau hauv lub tshav pob ntawm lub zog tshiab, tom qab lub photovoltaic bracket system siv kub-dip galvanized bolts, tsis tas yuav hloov lawv thaum lub sij hawm warranty 25 xyoo.Cov ntaub ntawv sib piv ntawm qhov project offshore photovoltaic qhia tau hais tias qhov kev puas tsuaj txhua xyoo ntawm kev txhawb nqa uas siv cov kub-dip galvanized fasteners tsuas yog 0.5%, uas yog 50% txhim khu kev qha ntau dua li kev kho ib txwm siv.

Kev nce qib ntawm kev lag luam thev naus laus zis feem ntau tau xav txog hauv kev tsim kho tshiab ntawm cov khoom siv yooj yim.Los ntawm kev tawg ntawm cov khoom siv saum npoo av engineering, qib kev tiv thaiv ntawm cov fasteners zoo tib yam tau raug tsa mus rau qhov siab tshiab.Qhov kev siv thev naus laus zis no tsis yog tsuas yog daws qhov teeb meem ntawm corrosion tsis ua haujlwm ntawm ib txwm muajbolts, tab sis kuj txhawb kev txhim kho cov cuab yeej siv rau lub sijhawm ntev thiab kev coj noj coj ua-dawb.Nrog rau kev txhim kho txuas ntxiv ntawm cov khoom siv kev ntseeg siab rau kev tsim khoom ntse, kub-dip galvanizing thev naus laus zis yuav muaj tseeb qhia nws cov nqi hloov tsis tau hauv ntau qhov chaw tseem ceeb.