Q1: Cov kev coj ua zoo tshaj plaws rau kev tuav q355b kav thaum lub sijhawm teeb tsa?
A1: Tsim nyog tuav ntawm Q355B kav yuav tsum tau npaj siab npaj kom tiv thaiv kev puas tsuaj. Siv Nylon slings lossis padded hooks kom tsis txhob khawb saum npoo uas tuaj yeem ua rau kev tiv thaiv xeb. Rau cov kav dej ntev, ua haujlwm ntau cov ntsiab lus rub tawm kom tiv thaiv kev ntxhov siab ntau tshaj li cov khoom txwv. Cov khw kav dej rau ntawm cov ntoo txhawb los tiv thaiv kev sib cuag hauv av thiab noo noo ntau zuj zus. Thaum lub sij hawm thauj mus los, cov kav dej ruaj khov nrog cov dunn kom tsim nyog kom tiv thaiv dov lossis cuam tshuam kev puas tsuaj lossis cuam tshuam. Kev txiav txim teb txiav yuav tsum tau siv cov txheej txheem txias kom tsis txhob muaj cov chaw tiv thaiv kev kub ntxhov. Yuav tsum ua raws cov lus pom zoo cov lus pom zoo kom muaj kev sib tiv thaiv qhov siab tshaj plaws los tiv thaiv kev deformation ntawm cov kav dej qis.
Q2: Yuav ua li cas Q355B yeeb nkab txhawb nqa?
A2: Txhawb kev tsim qauv rau Q355B kav yuav tsum tau nyiaj rau cov khoom siv hluav taws xob thiab cov khoom tsim qauv. Cov kev txhawb nqa tas yuav tsum muab tso rau ntawm cov chaw xaiv yaam kom nqus cov rog thrustb, thaum qhia kev txhawb nqa cov kev txhawb nqa axial. Ntaw ua raws li Asme B31.3 cov lus qhia, feem ntau 3-5m rau cov qauv ntau thiab tsawg dua raws li kev coj rog. Cov ntaub ntawv txhawb yuav tsum sib phim lossis tshaj cov yeeb nkab cov khoom siv thermal los tiv thaiv kev ntxhov siab ntau. Rwb thaiv tsev rwb thaiv tsev yog qhov yuav tsum tau ntawm cov pa roj carbon hlau txhawb nqa thiab cov kav dej stack. Rau ntsug khiav, lub caij nplooj ntoo hlav dai rau lub zog hluav taws xob thaum tswj kev txhawb nqa. Txhua tus txhawb nqa yuav tsum tso cai rau cov kev cai sib koom tes thiab kev kuaj xyuas kev pom.
Q3: Dab tsi yog cov txheej txheem sib koom ua ke kom sib dhos rau Q355B kav?
A3: Koom nrog sib koom ua ke yuav tsum tau npaj ua kom tsis meej txog kev ua pov thawj kev sib txuas. Rau cov pob qij txha flanged, siv kauv gaskets nrog cov nplhaib sab hauv rau cov ntawv thov hluav taws xob nruab nrab. Bolt Zawm yuav tsum ua raws li cov kab ntoo khaub lig ua ntu zus mus rau 30-50-100% ntawm qhov kawg torque qhov tseem ceeb. Welded sib koom tes yuav tsum tau 100% cov venetration wels nrog rov qab ntxuav cov kev pabcuam tseem ceeb. Grooved cov pob qij txha ua ke xav tau Gland Alignment thiab Uniform Bolt Zawm. Tso cai rau lub sijhawm ua ke kom zoo rau cov pob qij txha ua kom muaj cov chaw txias. Nco ntsoov txheeb xyuas cov txheej txheem sib koom ua ntej ua ntej kev sib txuas lus kawg - misalignment yuav tsum tsis pub tshaj 1mm ib 100 hli ntawm lub taub. Siab sim txhua pob qij txha raws li cov lej tsim nyog ua ntej kev ua haujlwm.
Q4: Muaj dab tsi kev saib xyuas cov txheej txheem txuas ntxiv Q355b Yeeb Nkab Kev Pab Lub Neej?
A4: Ib qho kev pabcuam txij nkawm suav nrog kev tshuaj ntsuam xyuas txhua 6-12 lub hlis rau txheej kev puas tsuaj lossis xeb. Ultrasonic thickness ntsuas ntawm 2-5 xyoo sib nrug soj ntsuam phab ntsa thinning hauv kev xeb ib puag ncig. Cathodic kev tiv thaiv cov systems xav tau txhua lub peev txheej ntsuas ntsuas thiab Rectifier tshev. Kev tu hniav hauv kev siv npua lossis cov qauv siv tshuaj tiv thaiv kev tsim vaj tse uas yuav ua kom nrawm dua. Kho tam sim ntawm cov txheej txheem puas nyob rau hauv 48 teev tiv thaiv kev corrosion. Khaws cov ntaub ntawv ntxaws ntxaws ntawm txhua qhov kev kuaj mob thiab kho kom haum rau kev soj ntsuam kev soj ntsuam li cas. Saib xyuas tshwj xeeb yuav tsum tau muab rau cov chaw uas paub kev sib tw lossis cua sov thermling uas nrawm nrawm.
Q5: Yuav ua li cas yuav tsum Q355b kav dej yuav raug kho?
A5: Kev kho txoj kev kho nyob ntawm kev puas tsuaj loj thiab qhov chaw nyob. Rau cov txheej me me puas tsuaj, ntxuav thaj chaw kom liab qab thiab siv cov txheej txheej yooj yim nrog 50 hli sib tshooj. Pinhole txeej nyob rau hauv cov chaw tsis yog-tseem ceeb tuaj yeem siv Epoxy-raws li ntaub ntawv siv ntaub ntawv raws li kho ib ntus. Rau Phab Ntsa Poob<10%, welded patch plates with rounded corners provide permanent repair. Full encirclement split sleeves are preferred for more significant damage. Complete pipe replacement is necessary when remaining wall thickness falls below minimum design requirements. All repairs must be performed by qualified personnel following approved procedures and re-inspected after completion.
