A516 Qib 70yog ib hom ntawm lub siab lub nkoj steel phaj tsim rau siv nyob rau hauv nruab nrab thiab qis kub kev pab cuam tej yam kev mob. Nws yog ib feem ntawm ASTM A516 specification, uas npog carbon-manganese-silicon steels haum rau fusion vuam. Qib no tau paub txog nws qhov zoo ntawm qhov tawv tawv thiab lub zog, ua rau nws tsim nyog rau cov ntawv thov uas muaj kev tiv thaiv siab yog qhov tseem ceeb. Cov khoom siv feem ntau yog siv rau hauv kev tsim cov boilers, cov tso tsheb hlau luam, thiab cov hlab ntsha siab uas tuav cov kua dej lossis cov pa roj hauv ntau qhov kev ua haujlwm siab. Nws muaj pes tsawg leeg thiab kev kho cua sov yog optimized los muab kev txhim khu kev qha thiab kev tiv thaiv rau nkig tawg, txawm nyob rau hauv ib puag ncig qhov kub thiab txias yuav tshwm sim.
Yield / Tensile zog
|
Metric |
Imperial |
|
|
Tensile Strength, Qhov kawg |
482-620 MPa |
70-90 hli |
|
Tensile zog, tawm los |
262 MPa rau |
38 ksg |
|
Elongation |
17 |
17 |
Khoom Siv Chemistry
|
C |
MN |
P |
SI |
S |
|
0.27 – 0.31% |
1 – 1.7% |
0.025% |
0.15 – 0.40% |
0.025% |
ua
1. Kev ua thawj zaug
Txiav: Feem ntau ua tiav siv Oxy- roj, Plasma, lossis Laser txiav. Rau cov khoom siv precision, Waterjet txiav yog siv los tiv thaiv tshav kub kub cuam tshuam (HAZ).
Ntug Kev Npaj: Beveling (V, U, los yog X-grooves) feem ntau yog ua los ntawm kev siv milling los yog sib tsoo kom paub meej tias tag nrho - nkag mus rau vuam rau lub nkoj siab seams.
2. Kev kho cua sov
Qhov no yog theem tseem ceeb tshaj plaws rau kev ua tiav cov khoom siv kho tshuab uas xav tau hauv 2026 tus qauv:
Normalizing: Yuav tsum tau rau daim hlau nrog thickness> 1.5 nti (38 mm). Lub phaj yog rhuab mus rau 1,650–1,750℃F (900–950 degree) thiab huab cua-cooled los ua kom cov qauv nplej thiab txhim kho qis- kub toughness.
Kev Tiv Thaiv Kev Nyuaj Siab (PWHT): Tom qab-Kev kho cua sov yog ua los ntawm kwv yees li 1,150℃F (620℃). Lub sij hawm soaking feem ntau yog 1 teev ib nti ntawm thickness kom tshem tawm cov residual stresses los ntawm vuam.
3. Kev tsim
Cold forming: A516-70 pom zoo formability. Txawm li cas los xij, vim nws lub zog siab, nws yuav tsum muaj lub peev xwm loj dov tshuab rau cylindrical plhaub.
Kub forming: Yog hais tias qhov deformation ntau tshaj 5% strain, cov khoom yog feem ntau kub - ua rau saum nws qhov tseem ceeb kub. Yog tias kub- tsim, lub phaj yuav xav tau rov ua dua - normalizing kom rov qab tau nws qhov qub qhov tawv tawv.
4. Vuam
A516-70 yog weldable heev tab sis xav tau cov txheej txheem tshwj xeeb:
Preheating: Qhov tseem ceeb rau cov ntu tuab (feem ntau 200℃F / 95℃lossis siab dua) txhawm rau tiv thaiv hydrogen-induced cracking.
Filler Metals: Feem ntau siv E7018 (tsis tshua muaj hydrogen electrodes) rau SMAW lossis ER70S-6 rau GMAW / GTAW cov txheej txheem.
Hydrogen Control: Tsawg-kev coj ua hydrogen yuav tsum tau tswj nruj me ntsis thoob plaws hauv cov txheej txheem vuam.
5. Kev kuaj ntxiv & Kev tshuaj xyuas
Txhawm rau kom ntseeg tau tias kev ncaj ncees ntawm qhov ua tiav:
Kev Ntsuas Ultrasonic (UT): Ua raws li ASTM A435 lossis A578 txhawm rau txheeb xyuas cov laminations sab hauv lossis suav nrog.
Charpy V-Ntch (CVN) Impact Test: Ua los xyuas qhov toughness ntawm qhov kub thiab txias (xws li -50℃F).
HIC & SSC Kev Xeem: Rau "Sour Service" (roj & roj), kev sim rau Hydrogen Induced Cracking thiab Sulfide Stress Cracking kuj yuav tsum tau.
Cov ntawv thov tseem ceeb
Zog & Lub Zog Tsim:Siv rau cov khoom tseem ceeb xws li kev lag luam boilers, chav nruas, thiab nuclear reactor plhaubvim nws muaj peev xwm tuav tau siab thiab kub.
Roj, Roj & Petrochemical:Kev siv dav hauv cov khoom sib cais, distillation kab, cov reactors, thiab kub exchangers.
Kev Pab Cuam:Kev sim tshwj xeeb (HIC/SSC) variants yog siv nyob rau hauv ntub 𝐻2𝑆 ib puag ncig los tiv thaiv hydrogen-induced cracking.
Tsawg-Tsub Cia:Qhov tseem ceeb rau cryogenic cia tankthiab arctic pipelines, raws li nws tseem ductile thiab resistant rau nkig tawg mus rau -46℃(-50℃F).
Heavy Infrastructure:Pom nyob rau hauv cov choj, tsev, railroad tank tsheb, thiab hnyav- cov khoom siv ua haujlwmqhov twg structural kev ncaj ncees nyob rau hauv load yog qhov tseem ceeb.
Qhov Zoo Tshaj Plaws
High Tensile zog:Boasts lub zog siab tshaj plaws ntawm cov qib A516, nrog lub zog tensile ntawm 70-90 ksi (485-620 MPa).
Superior Notch Toughness:Nws zoo - cov qauv nplej (feem ntau ua tiav los ntawm normalizing) muab kev tiv thaiv zoo rau kev cuam tshuam, txawm tias nyob hauv qhov txias txias.
Weldability zoo heev:Cov pa roj carbon tsawg tso cai rau muaj zog, siab -welds zoo siv cov txheej txheem zoo li SMAW, GMAW, lossis SAW, uas yog qhov tseem ceeb rau siab - siab welded sib dhos.
Environmental Versatility:Muaj peev xwm ua haujlwm thoob plaws qhov dav thermal spectrum ntawm -46℃txog 538℃(-50℃F txog 1000℃F).
Tus nqi -Efficiency:Raws li cov pa roj carbon steel, nws muab kev ua haujlwm siab - rau - tus nqi piv piv rau cov hlau alloy kim dua rau feem ntau nruab nrab - qhov kub siab ntawm lub nkoj siv.
Pov thawj Reliability:Ua raws li nruj ASME Boiler thiab Pressure Vessel Code (BPVC)thiab NACEcov qauv, ua kom lub ntiaj teb kev nyab xeeb ua raws.
Yog xav paub ntxiv txog GNEE cov khoom siv hlau, tiv tauj peb ntawm beam@gneesteelgroup.com. Peb tos ntsoov yuav ua haujlwm nrog koj.
Puas yog A516 Qib 70 corrosion{2}}resistant?
Nws muaj qee qhov kev tiv thaiv corrosion rau huab cua thiab dej tshiab, tab sis tsis tiv taus corrosion los ntawm cov kua qaub muaj zog, muaj zog alkalis thiab chlorine - muaj cov xov xwm. Nyob rau hauv corrosive ua hauj lwm tej yam kev mob, kev ntsuas xws li txheej, hauv ob sab phlu los yog cathodic tiv thaiv yuav tsum tau coj mus rau txhim kho corrosion kuj thiab ntev kev pab cuam lub neej.
Dab tsi yog qhov sib txawv thickness specifications ntawm A516 Qib 70 steel daim hlau?
Lub thickness specification yog 6mm-200mm, qhov dav yog feem ntau 1500mm-4000mm, thiab qhov ntev yog 3000mm-12000mm. Cov kev tshwj xeeb tshwj xeeb tuaj yeem kho raws li cov khoom tsim khoom xav tau, thiab kev sib txuas lus nrog lub zeb zeb ua ntej yuav tsum tau ua.
Dab tsi yog tus lej ua tiav rau A516 Qib 70?
Tus lej ua tiav yog ASTM A516 / A516M-22, qhov "A516" yog tus lej qauv tseem ceeb, "M" qhia txog metric units, thiab "22" yog xyoo tshiab version. Cov qauv no qhia txog ntau yam kev xav tau rau cov khoom siv.
A516 Qib 70 puas tuaj yeem siv los tsim boiler nruas?
Yog lawm, vim tias nws muaj lub zog nruab nrab thiab qhov kub tsis tshua muaj zog, tawv thiab qaug zog ua haujlwm, uas ua tau raws li qhov yuav tsum tau muaj ntawm boiler nruas rau siab- cov ntaub ntawv bearing. Thaum lub sij hawm tsim khoom, kev tswj xyuas nruj ntawm vuam zoo thiab tsis yog - yuav tsum tau kuaj xyuas kom ruaj ntseg.
Dab tsi yog qhov yuav tsum tau elongation rau A516 Qib 70?
Qhov elongation (δ5) yog ntau dua lossis sib npaug li 21%. Lub elongation Performance index qhia txog cov yas deformation muaj peev xwm ntawm steel phaj. Lub elongation siab dua tso cai rau cov phaj hlau tsis tshua muaj kev puas tsuaj thaum muaj kev ntxhov siab thiab ua kom yooj yim rau kev ua thiab kev tsim (xws li khoov thiab stamping).
Dab tsi electrode yuav tsum raug xaiv rau vuam A516 Qib 70?
Feem ntau siv electrode yog E7018 (tsawg hydrogen hom), uas phim lub zog thiab toughness ntawm lub hauv paus hlau. Thaum lub sij hawm vuam, cov electrode yuav tsum tau qhuav (350-400 degree, txuag hluav taws xob rau 1-2 teev) kom tsis txhob vuam tsis xws luag xws li porosity thiab tawg, thiab xyuas kom muaj kev sib koom tes zoo.
Dab tsi yog qhov zoo sib xws thiab qhov sib txawv ntawm A516 Qib 70 thiab Q345R cov ntaub ntawv?
Ob leeg yog cov hlab ntsha steel phaj. Q345R yog lub teb chaws tus qauv (GB / T 713) nrog lub zog tawm los ntawm 345MPa, uas yog siab dua li qib 70; tom kawg yog tus qauv Asmeskas nrog qhov zoo dua qis -kub toughness. Lawv cov xwm txheej siv tau thiab cov qauv ua tiav yog qhov sib txawv thiab tsis tuaj yeem hloov pauv tsis tau.
Dab tsi yog qhov yuav tsum tau ua ntawm A516 Qib 70 steel phaj?
Qhov saum npoo yuav tsum tsis muaj kev puas tsuaj xws li tawg, npuas, nti thiab quav. Cov me me pitting thiab khawb raug tso cai, thiab qhov tob ntawm qhov tsis xws luag yuav tsum tsis pub tshaj ib nrab ntawm cov thickness kam rau ua ntawm steel phaj. Kev tshuaj xyuas yuav tsum tau ua los ntawm kev tshuaj xyuas qhov muag lossis tsis yog - kuaj kev puas tsuaj.
A516 Qib 70 puas tuaj yeem muaj zog los ntawm kev kho cua sov?
Nws tuaj yeem raug kho cua sov xws li normalizing thiab tempering. Normalizing tuaj yeem kho cov nplej thiab txhim kho toughness, thaum tempering tuaj yeem tshem tawm kev ntxhov siab. Txawm li cas los xij, cov khoom siv no yog carbon steel, thiab cov nyhuv quenching ntxiv yog txwv, yog li kev kho quenching feem ntau tsis tau txais.
Dab tsi yog qhov zoo ntawm A516 Qib 70 hauv kev tsim cov khoom siv roj ntsha?
Qhov zoo yog qhov zoo weldability, uas ua kom yooj yim vuam thiab tsim cov tank loj; zoo heev nruab nrab thiab tsis kub kub toughness, uas yog tsim nyog rau lub qis - kub ua hauj lwm tej yam kev mob ntawm natural gas cia; lub zog ua tau raws li qhov siab-cov kev cai ntawm cov kabmob, thiab tus nqi qis dua li ntawm cov hlau hlau alloy.