1.What yog cov kauj ruam tseem ceeb hauv kev tsim khoom ntawm Q355B Welded yeeb nkab?
Cov txheej txheem tsim khoom ntawm Q355B Welded yeeb nkab cuam tshuam nrog cov kauj ruam tseem ceeb, pib nrog kev xaiv thiab tshuaj xyuas cov khoom siv thiab cov khoom ntiag tug. Cov hlau yog tom qab ntawd tsis muaj ris tsho tiv no, pluav, thiab txiav rau qhov dav xav tau. Tom ntej no, cov qauv tiaj tus yog tsim rau hauv cov series cylindrical siv cov rollers uas hu ua kev tsim cov hlau mus rau hauv qhov xav tau yeeb nkab taub. Thaum tsim tau, cov npoo ntawm cov hlau yog welded ua ke siv cov hau kev zoo li hluav taws xob tiv thaiv (ERW), uas siv flux los tiv thaiv lub pas dej weld. Tom qab vuam, cov yeeb nkab undergoes cov txheej txheem xws li cov leeg anaming kom txo cov kev ntxhov siab thiab txhim kho weld lub zog. Nws yog qhov loj thiab ncaj qha los ua kom pom tseeb qhov tseeb, ua raws li kev sim ua tsis yog (piv txwv li, kev kuaj ultrasonic) txhawm rau kuaj pom txhua lub weld tsis xws luag. Thaum kawg, cov yeeb nkab yuav tau coated nrog anti-corrosion kev kho, txiav kom ntev, thiab kuaj xyuas ua ntej ntim khoom thiab xa khoom.
2.Txhua hluav taws xob tiv thaiv vuam (ERW) ua haujlwm hauv kev tsim Q355B welded kav?
Hluav Taws Xob Reistance vuam (ERW) yog ib txoj kev rau kev tsim Q355B Welded Kav, vam khom rau cov cua kub rau koom nrog cov npoo steel. Hauv cov txheej txheem no, cov qauv tsim steel (puab rau hauv lub tog raj kheej) tau dhau los ntawm cov hluav taws xob tooj liab uas siv hluav taws xob thiab lub siab. Qhov tam sim no ntws los ntawm cov hlau, thiab cov tsis kam ntawm cov npoo (qhov twg ob xaus sib ntsib) ua kom muaj cua sov, melting cov hlau los ua cov pas dej molten. Ib txhij, cov electrodes siv siab los tso rau molten sawv ua ke, tsim kom muaj seam txuas ntxiv. ERW yog qhov ua tau zoo rau kev tsim cov kav dej nrog cov qhov ntev zoo nkauj, tshwj xeeb tshaj yog hauv nruab nrab rau me me diameters. Cov txheej txheem tseev kom cov txheej txheem tswj tau tam sim no, siab, thiab ceev kom muaj kev ywj pheej weld, uas yog qhov tseem ceeb rau kev tswj hwm cov qauv txheej txheem ntawm Q355B kav.
3.Qhov yog lub hom phiaj ntawm kev anealing hauv Q355B Welded Yeeb Nkab Raug Cov Txheej Txheem?
Kev Kho Mob yog lub tshav kub kho tau siv hauv Q355B Welded yeeb nkab tsim cov kev ntxhov siab hauv Weld Seam thiab txhim kho cov yeeb nkab cov khoom siv. Tom qab vuam, txoj kev txias txias ntawm lub cheeb tsam weld tuaj yeem tsim cov kev ntxhov siab sab hauv, ua rau cov nqaws plhuav thiab nquag tawg. Thaum annealing, cov yeeb nkab yog rhuab rau ib qho kub tshwj xeeb (feem ntau ntawm 600℃thiab 700℃rau qhov ntsuas hluav taws xob kom muaj cov qauv siv lead ua kom rov ua dua tshiab. Cov txheej txheem no thim kev ntxhov siab los ntawm kev txhawb nqa lub didus ntawm atoms, txo kev nyuaj, thiab kev ua siab loj hauv weld cheeb tsam. Annealing kuj tseem pab rau homogenize micrealize ntawm cov hlau, kom ua kom muaj zog thoob plaws hauv cov yeeb nkab, tsis yog nyob hauv cov hlau hauv paus tab sis kuj nyob hauv thaj chaw welded. Rau Q355B kav siv rau hauv cov ntawv thov kom muaj kev nruj, xws li nyob rau hauv ib puag ncig txias, ib qho tseem ceeb heev kom ntseeg tau tias muaj kev cuam tshuam.
4. Saib kev tswj hwm zoo li cas thaum tau tsim tawm ntawm Q355B welded kav?
Muaj ob peb txoj kev tswj hwm kev tswj hwm zoo yog siv thaum lub sijhawm ua haujlwm ntawm Q355B Welded kav kom ntseeg tau tias lawv tau ua raws cov qauv. Ua ntej, cov khoom xa tuaj hlau los yog cov phiaj yog kuaj kom muaj tshuaj lom neeg (tensile thiab kev ntsuas kev xav) kom paub tseeb tias lawv ua raws li Q355B specifications. Thaum lub sij hawm ua thiab vuam, cov neeg lag luam saib xyuas tsis nyiam cov kev ua kom muaj kev ntxhov siab, thiab nrawm nrawm nrawm nrawm lossis ua kom tsis tiav. Tom qab vuam, tsis yog-ua kev puas tsuaj kuaj (NDT) tau siv, suav nrog kev ntsuas ultrasonic muag rau sab hauv kev ncaj ncees, thiab kev sim siab los kuaj xyuas. Kev kuaj xyuas sab yog ua kom muaj txoj kab uas hla lub cheeb, phab ntsa thickness, thiab ncaj ntsib kom muaj kev thev taus. Ib qho ntxiv, cov kav dej tau raug ua kom muaj kev sim ua kom puas, kom paub meej tias muaj lub zog, thiab charpy cuam tshuam kev ntsuas ntawm 20 degree. Thaum kawg, kev tshuaj xyuas kev pom rau cov kev tsis xws luag nyob saum npoo av zoo li xeb, pits, lossis tsis xwm yeem welds ua ntej cov kav dej tau pom zoo rau kev xa khoom.
5.How yog submerged arc vuam (pom) txawv los ntawm ERW hauv kev tsim Q355B welded kav?
Submerged arc vuam (pom) thiab hluav taws xob tiv taus vuam (ERW) sib txawv hauv lawv cov cav vuam thiab cov ntawv thov rau Q355b kav. Pom siv cov xov hlau txuas ntxiv hluav taws xob electrode thiab granli flux uas npog thaj chaw weld, tsim kev tiv thaiv kev tiv thaiv tawm tsam cov kev sib kis taws Lub arc yog submerged hauv qab flux, ua kom cov hlau kub yaj thiab tsim lub pas dej weld uas ua rau muaj zog. Pom yog qhov zoo tagnrho cov kav dej tuab thiab cov kab mob hnyav vim nws lub peev xwm loj dua thiab muaj peev xwm tsim cov khoom siv sib sib zog nqus, nkag mus rau hauv Welds. Hauv kev sib piv, ERD siv hluav taws xob tiv thaiv hluav taws xob ntawm cov qauv muab tub lim, uas tsis muaj cov tub lim rau cov tub rog, ua kom tau nyiaj sai dua rau nyias rau cov phab ntsa qis dua thiab cov tawv nqaij me me. Saws Welds feem ntau loj dua thiab muaj kev sib zog ntau dua, ua rau lawv muaj txiaj ntsig zoo rau cov roj teeb uas ceev thiab ua tau zoo yog qhov tseem ceeb.
