15. Koom nrog thiab cov txheej txheem sib txuas
Q1: Dab tsi yog cov qauv feem ntau rau koom nrog Q355B kav?
A1: Qhov kev koom tes tseem ceeb rau Q355B kav suav nrog Vuam, cov khoom lag luam sib txuas, thiab flanged sib txuas. Vuam tseem yog cov txheej txheem feem ntau cov txheej txheem siv, muab cov pob qij txha uas muaj zog tshaj plaws rau kev teeb tsa mus tas li. Cov txheej txheem vuam xws li cov ntaub thaiv hlau arc vuam (smaw), roj av hlau vuam (gmaw), thiab submerged arc vuam (pom) rau phab ntsa tuab. Cov neeg kho tshuab nce kev sib tw zoo li yeej zoo nkauj {{ Flanged kev sib txuas yog nyiam rau cov khoom sib txuas thiab cov chaw uas xav tau cov nquag disassembly. Txhua txoj hauv kev muaj qhov zoo tshwj xeeb nyob ntawm daim ntawv thov yuav tsum tau ua, nrog vuam muab cov kev ntseeg siab ntau tshaj plaws thiab kev tswj hwm zoo.
Q2: Cov kev txiav txim siab tshwj xeeb no siv thaum vuam q355b kav?
A2: VUAM Q355B yuav tsum ua tib zoo mloog rau ob peb qhov tseem ceeb los ua kom muaj kev sib koom ua ke ncaj ncees. Preheating ntawm 100 -} 150 qib yog pom zoo rau thicknesses saum toj no 20mm los tiv thaiv hydrogen {}}} ua rau tawg. Tsawg - hydrogen mabtomer electrodes (E7015, E7016) yuav tsum tau siv los txo cov ntsiab lus hydrogen siv tau hauv Welds. Lub interpais kub yuav tsum tau tswj kom qis dua 250 qib kom tsis txhob muaj kev loj hlob ntau hauv tshav kub- cuam tshuam cheeb tsam. Npaj ua kom huv si, nrog cov ces kaum zoo (30-37.5 degree) thiab cov khoob (2-4mm) rau kev nkag mus. Tom qab kev kho cua sov tom qab Weld yuav tsim nyog rau cov ntu tuab los txo cov kev ntxhov siab uas muaj kev ntxhov siab. Nruj me ntsis rau cov txheej txheem vuam yog qhov tseem ceeb, tshwj xeeb rau cov ntawv thov tseem ceeb hauv cov txheej txheem lossis cov qauv txheej txheem.
Q3: Yuav ua li cas cov neeg kho mob couplors sib piv rau welded pob qij txha rau Q355B kav?
A3: Courch tshuab couplings muaj cov txiaj ntsig zoo thiab cov kev txwv piv rau cov pob qij txha welded. Thaum sib txuas ua kom muaj kev teeb tsa nrawm dua thiab yooj yim disassembly, lawv feem ntau muaj kev ntsuas siab dua (feem ntau txwv rau chav kawm 150-300) thiab txo cov qauv kev ncaj ncees. Welded pob qij txha muab cov xau siab ua kom nruj thiab tuaj yeem tiv taus cov kev ntsuas siab dua thiab kub. Cov couplings qhia cov peev xwm ntxiv yuav xau ntau txoj kev thiab tej zaum yuav xav tau kev tu dua sijhawm ntau dua. Txawm li cas los xij, lawv tau txais txiaj ntsig zoo nyob ib ntus, rov qab ua haujlwm, thiab cov chaw uas txwv tsis pub muaj haujlwm kub. Niaj hnub nimno grooved Coupling lub tshuab tau txhim kho tam sim no nce kev ua haujlwm welded pob qij txha rau qee cov txiaj ntsig thaum tseem muaj cov txiaj ntsig ntawm kev muaj teeb meem thiab kev kho tau.
Q4: Cov kev coj ua zoo tshaj plaws rau Flange kev sib txuas nrog Q35B kav?
A4: Tsim nyog flange kev sib txuas rau Q355b kav suav nrog ntau cov kauj ruam tseem ceeb. Flange ntsej muag yuav tsum yog huv thiab tsis muaj kev tsis zoo, nrog tsa lub ntsej muag lossis lub nplhaib {{} hom kev teeb tsa xaiv raws li cov kev xav tau. Cov kev xaiv gasket yuav tsum phim cov kev pabcuam cov kev pabcuam {5} Nrhiav graphite flexect yog ib qho kev siv rau feem ntau cov ntawv thov. Bolt Zawm yuav tsum ua raws li ib lub hnub qub qauv sib kis hauv ntau kis (feem ntau 30%, 70%, thiab 100% ntawm qhov kawg ntawm kev faib khoom. Tsim kom zoo kub lubrication txo kev sib txhuam uas tuaj yeem ua rau cov chaw thau khoom tsis sib haum. Cov kev sib twv yuav tsum tau kuaj xyuas, nrog kev tso cai tiv thaiv feem ntau yog txwv rau 1mm / Misalignment thiab 1℃ensiation. Nquag rov-} Porlequing yuav tsim nyog tom qab thawj lub cua sov mus los hauv high- kub kev pab.
Q5: Yuav ua li cas yuav tsum sib txuas hlau sib txuas ntawm Q355B thiab lwm yam khoom siv tau ua raws?
A5: Txuas Q355B rau cov hlau tsis sib xws yuav tsum muaj kev txiav txim siab tshwj xeeb kom tiv thaiv cov teeb meem galosion thiab thermal nthuav dav. Cov khoom siv insulating nrog dielectric spacers thiab cov tes tsho yuav tsum tau siv thaum koom nrog ntau cov hlau uas zoo li tooj liab lossis hlau. Txog siab {- sov daim ntawv thov, thermal nthuav kev sib txawv yuav tsum tau ua kom haum los ntawm kev nthuav dav lossis txuas txuas ntxiv. Cov pob qij txha sib txuas uas siv cov hlau uas tsim nyog tsim nyog yog qhov tseem ceeb rau welded kev sib txuas ntawm cov ntaub ntawv tsis sib xws. Cathodic tiv thaiv yuav tsim nyog rau kev faus lossis submermined dissimilar hlau sib txuas. Kev xaiv cov khoom yuav tsum tau taw kom ua kom cov galvanic muaj peev xwm sib txawv hauv qab 0.25V thaum ua tau. Kev soj ntsuam ib txwm ntawm cov chaw hloov pauv no yog qhov tseem ceeb raws li lawv sawv cev cov ntsiab lus tsis ua tiav hauv cov twj piping.
