1.Compararison ntawm Q355B thiab lwm yam menyuam yaus
Q6: Q655B piv rau Q2355 li cas?
A6:Q355B Muaj ntau dua lub zog zog (355 MPa) dua Q235B (235 MPa) tab sis qis dua Q420B (420 mpa). Thaum Q235B yog kev lag luam ntau dua rau lub teeb cov ntaub ntawv thov thauj khoom, Q355B muab cov qauv zoo dua rau cov qauv hluav taws xob. Q420B muaj zog dua tab sis tsawg dua condile thiab nyuaj rau weld. Q35Sib tshuav hluav taws xob muaj zog, weldability, thiab tus nqi, ua rau nws xaiv nrov rau kev tsim kho. Nws cov kev cuam tshuam nyuaj ntawm tsawg kub yog zoo dua rau Q235b, ua rau nws haum rau cov huab cua txias. Txawm li cas los xij, Q420B yog qhov zoo dua rau cov ntawv thov hnyav nrog hnyav xws li cov hniav sib txawv ntawm cov nyom.
2.Qualrity cov qauv thiab kev sim rau Q355B Welded yeeb nkab
Q7: Cov Qauv Yuav siv dab tsi rau Q355B Welded yeeb nkab, thiab nws tau sim li cas?
A7:Q355B Welded yeeb nkab ua raws li Suav Cov Qauv (GB / T 1591, GB / T 1591) thiab cov sib npaug thoob ntiaj teb zoo li en 10219 thiab ASTM A572. Cov kev ntsuam xyuas zoo xws li tensile lub zog kev sim, them tus nqi cuam tshuam kev ntsuas (rau cov kev ntsuas kub tsawg), thiab khoov cov ntawv xeem kom ntsuam xyuas ductility. Tsis yog-ua kev sim ua kev sim siab (NDT) txoj kev nyiam xws li kev sim ultrasonic (ut) thiab ntsuas hluav taws xob (RT) nrhiav cov khoom siv sab hauv. Hydrostatic Kev sim ua kom muaj kev ua kom muaj txiaj ntsig zoo hauv siab. Cov khoom ua tau zoo yog tshuaj pom kev visually thiab los ntawm kev tshuaj ntsuam sab hauv (piv txwv li, phab ntsa thickness, ovality). Daim ntawv pov thawj los ntawm cov koom haum thib peb zoo li SGS lossis TÜV yuav tsum muaj rau kev xa tawm.
3. Qhov zoo ntawm Q355B Welded Yeeb Nkab
Q8: Dab tsi yog qhov zoo ntawm kev siv Q35B Welded yeeb nkab?
A8:Q355B Welded yeeb nkab muaj ob peb qhov kev cuam tshuam tseem ceeb, ua rau qhov kev xaiv zoo tshaj plaws hauv kev lag luam ntau yam. Nws cov txiaj ntsig zoo zog (ntau dua lossis sib npaug zos rau 355 MPa) ua kom muaj peev xwm ua kom zoo dua load-coj tau kev siv peev txheej zoo, haum rau cov ntawv thov kev tsim qauv. Cov hlau cov ntsiab lus txo cov pa roj cardility, txo qhov kev pheej hmoo ntawm cov kab nrib pleb thaum lub sijhawm fabrication. Ib qho ntxiv, Q355B muab cov kev cuam tshuam zoo heev, tshwj xeeb yog thaum kub qis (-20 degree), ua rau nws zoo tagnrho rau huab cua txias. Piv rau cov neeg qib qis xws li Q235B, nws xa tau zoo dua lub zog-hnyav, txo cov nqi siv hauv kev tsim kho. Cov yeeb nkab cov versatility tso cai rau kev siv hauv txuas choj, tshuab ua tshuab, thiab cov hlab ntsha siab. Nws corrosion tsis kam tuaj yeem txhim kho ntxiv nrog cov txheej txheej zoo li galvanization.
4. Kev kho cua sov ntawm Q355B Welded Yeeb Nkab
Q9: A Q355B Welded Yeeb Nkab Nrais Nplaum Kev Kho Mob Thaum Tshav Kub Kub, thiab yog vim li cas?
A9:Yog, Q355B Welded Pipes feem ntau tau txais kev kho cua sov tom qab-weld) los txhim kho lawv cov khoom siv. Cov txheej txheem zoo li normalizing los yog tempering txo kev ntxhov siab sab hauv uas tshwm sim los ntawm vuam, tiv thaiv distortion thiab tawg. Kev kho cua sov kuj tseem kho tau cov qauv sib dhos, txhim kho kev ua kom nruj thiab ductility. Rau cov ntawv thov tseem ceeb, quenching thiab tempering tej zaum yuav siv tau kom ua tiav lub zog siab dua. Kev kho mob kom ua kom muaj kev sib luag hauv microstructure, txhim kho kev nkees ua kom tsis kam raws li kev thauj khoom hauv lub cyclic. Kev kho cua sov kom zoo yog qhov tseem ceeb rau cov kav dej uas siv rau hauv cov kev kub siab lossis qis-dej. Yog tsis muaj nws, residual kev nyuaj siab tuaj yeem ua rau thaum ua ntej ua tsis tiav.
5. Corrosion Kuj ntawm Q355B Welded Yeeb Nkab
Q10: Yuav ua li cas Q355B Welded yeeb nkab ua tawm tsam kev xeb?
A10:Q355B Steel muaj mob corrosion tsis kam vim nws cov ntsiab lus xws li chromium thiab npib tsib xee. Txawm li cas los xij, tsis muaj kev tiv thaiv Q355b kav yog raug rau xeb hauv noo noo los yog acidic ib puag ncig. Txhawm rau txhim kho cov durability, txheej zoo li galvanizing, epoxy tha xim, lossis polyethylene qhwv yog thov. Stainless hlau cladding yog lwm txoj kev xaiv rau kev txhoj puab heev. Kev saib xyuas tsis tu ncua, xws li rov ua dua, txuas ntxiv lub neej pabcuam hauv kev siv sab nraum zoov. Hauv chaw ua si marine, ua kom muaj kev tiv thaiv kev tua tsiaj lossis kev tiv thaiv kev sib xyaw. Thaum tsis yog raws li corrosion-resistant li stainless hlau, Q355B muaj cov tshuaj zoo siv thaum kho kom raug.
