1. Cov khoom yooj yim ntawm Q355B Welded Yeeb Nkab
Q1: Dab tsi yog Q355B Welded yeeb nkab?
A1: Q355B Welded yeeb nkab yog lub siab-muaj zog tsawg-alloy qauv txheej txheem steel hlau tsim los ntawm vuam cov txheej txheem xws li ERW lossis pom. Daim ntawv "Q355" qhia txog nws li tsawg zog lub zog ntawm 355 MPa, thaum "sawv cev rau nws cov kev kub ntxhov rau-nyoog degree. Cov kav dej no feem ntau muaj cov ntsiab lus xws li manganese, silicon, thiab me me ntawm vanadium lossis niobium los txhim kho lub zog thiab tawv. Piv rau cov roj carbon steel hlau, Q355B muaj cov cuab yeej zoo dua thaum tswj kev ua kom zoo weldability thiab formatability. Cov kev siv cov ntawv thov uas suav nrog kev tsim cov qauv qauv, txuas hniav, thiab cov khoom siv tshuab uas muaj zog yog qhov yuav tsum tau ua. Cov kav dej muaj ntau qhov ntau thiab tsawg ntawm cov hlab me me rau cov kab hlau loj tshaj 1000mm hauv lub cheeb.
Q2: Tus "B" hauv Q3555 li cas?
A2: Tus "B" hauv Q355B sawv cev rau cov khoom siv zoo nyob rau hauv cov nqe lus ntawm kev cuam tshuam kov thiab kub ua tau zoo. Raws li Suav cov qauv GB / T 1591, qib qib K. Qhia cov hlau tau raug mob ntawm 20℃thiab ua tau raws li qhov kev xav tau siv hluav taws xob tsawg kawg. Qhov no ua rau Q355B tsim nyog rau cov qauv txheej txheem dav dav hauv cov huab cua huab cua. Qhov kev xav tau hluav taws xob cuam tshuam rau qib B yog feem ntau loj dua los yog sib npaug ntawm 34J ntawm chav sov, kom muaj kev xav tau tsim nyog. Cov qhab nia siab dua li C, D, thiab E rov ua tau zoo dua-kub ua tau zoo tab sis ntawm kev nce nqi. Qib B muab cov kev pom kev zoo ntawm kev ua tau zoo ntawm kev ua tau zoo thiab kev lag luam rau ntau daim ntawv thov. Cov kev ntsuas thiab cov txheej txheem txais kev lees paub yog nruj me ntsis txhais hauv cov qauv muaj feem.
Q3: Dab tsi yog qhov chaw nyob sab hauv rau Q355B welded kav dej?
A3: Q355B Welded kav yog tsim nyob rau hauv ntau qhov ntau thiab tsawg kom tau raws li cov cai thov sib txawv. Cov qauv txheej txheem sab nraud feem ntau ntawm 21.3mm rau cov roj me me mus txog 2000mm rau cov ntawv thov teeb kom loj rau 50 hli rau cov txheej txheem hnyav. Qhov loj dua kev hloov pauv mus txog 4000mm cov taub uas tuaj yeem tsim rau cov ntawv thov tshwj xeeb xws li cua tshuab luam lossis txhawb nqa choj. Qhov ntev ntawm cov kav dej txheem yog feem ntau yog 6-12 metres, nrog ntev ntev muaj rau cov ntawv thov xa hluav taws xob ntev. Qhov ntev ntev tau tswj hwm raws li cov qauv xws li GB / T 3091 lossis en 10219, feem ntau tso cai ± 0.5% nyob rau hauv lub cheeb thiab ± 10% hauv phab ntsa tuab. Qhov tshwj xeeb precision-qib kav rau cov kav hlau sib zog yog muaj rau cov ntawv thov tseem ceeb.
Q4: Npaum li cas yog Q355B piv rau cov kav dej seamless?
A4: Q355B Welded Pipes muab ntau qhov zoo thiab sib txawv piv rau cov kav dej uas zoo sib xws. Thaum cov kav dej tsis muaj peev xwm muaj cov khoom siv uas muaj zog ntau dua rau cov ntawv thov siab, Q355B Welded Pipes muab cov ntawv thov kev txuag ntawm 20-30% rau cov ntawv thov kev tsim qauv. Welded kav tuaj yeem tsim nyob rau hauv qhov diameters loj dua thiab thinner phab ntsa dua li cov neeg siv khoom, muab cov khoom zoo siv. Lub txheej txheem vuam tsim cov chaw sov sov nrog cov khoom sib txawv me me, tab sis cov tswv yim tsim khoom niaj hnub no txo cov txiaj ntsig no. Rau feem ntau cov ntawv thov uas muaj cov khoom muaj zog tsis tseem ceeb, Q35B Welded kav dej muab lub zog txaus. Lawv kuj tso cai ntau dua kev tsim khoom ntawm cov qauv tsis muaj ntau thiab tsawg thiab cov duab piv rau cov kav dej seamless. Kev tswj kom zoo xws li ultrasonic sim ua kom muaj kev sib koom ua ke welded ua tiav cov qauv kev ua tau zoo.
Q5: Yuav ua li cas cov thawj ua tiav saum npoo av muaj rau Q355B welded kav?
A5: Q355B Welded Kav yog muaj nrog ntau yam kev kho mob kom haum rau ib puag ncig nyias. Qhov yooj yim tshaj plaws yog xim dub ua tiav nrog zeb nplai, haum rau sab hauv cov ntawv thov lossis qhov uas tha xim yuav siv tom qab. Pickled thiab oiled ua tiav tshem tawm mill nplai los ntawm kev kho cov kua qaub, muab cov xim huv rau kev pleev xim rau kev ua si tam sim ntawd. Kub-DIP galvanizing siv zinc txheej (feem ntau 50-80μm) rau cov chaw corrosion zoo heev hauv chaw ua si sab nraum zoov. Pleev xim ua tiav siv epoxy, polyester lossis lwm yam koob tshuaj tiv thaiv kev tiv thaiv corrosion thiab kev pom zoo kom zoo nkauj rau cov ntawv kos duab kos duab. Tshwj xeeb tag nrho zoo li 3PE (peb txheej txheej polyethylene) txheej yog siv rau cov kav dej tawg uas xav tau ntau qhov kev tiv thaiv. Qhov kev xaiv ua tiav yog nyob ntawm cov kev mob ib puag ncig, lub neej pabcuam kev pabcuam, thiab cov kev txiav nyiaj los siv nyiaj txiag, nrog cov kev txiav txim siab muaj peev xwm tshaj plaws rau cov txheej txheem sab nraum zoov.
