A515 Qib 70yog lub siab -lub zog, carbon- silicon steel phaj (ASTM A515 Qib 70) siv rau cov hlab ntsha siab, boilers, thiab tso tsheb hlau luam ua haujlwm ntawm nruab nrab mus rau qhov kub siab dua, paub zoo weldability, machinability, thiab ductility nrog qhov tsawg kawg nkaus tensile zog ntawm 70 ksi (485 MPa) thiab zoo cuam tshuam. Nws yog ib qho kev xaiv thaum muaj zog dua li Qib 60 lossis 65 yuav tsum muaj.
ASTM A515 Qib 70 Phaj Chemical Composition
|
Qib |
C |
Mn |
P |
S |
Si |
|
A515 Qib 70 |
0.30-0.35 |
max 1.30 Nws |
0.035 max |
0.035 max |
0.13-0.45 |
ASTM A515 Qib 70 Cov Ntawv, Phaj Mechanical Properties
|
Qib |
Thickness |
Yield |
Tensile |
Elongation |
|
A515 Qib 70 |
50-200 hli |
MPa -551 min |
MPa - 485-620 |
17-21% |
ASTM A515 Qib 70 Cov Ntawv, Phaj & Coils Daim Ntawv Thov Kev Lag Luam
Tawm ntawm -Shore Oil Drilling tuam txhab
Lub zog tiam
Petrochemicals
Kev ua pa roj
Tshwj xeeb tshuaj
Pharmaceuticals
Cov Khoom Siv Tshuaj
Cov Khoom Siv Tshuaj
Cov Khoom Siv Dej Hiav Txwv
Thaum tshav kub kub Exchangers
Condenser
Pulp thiab Ntawv Kev Lag Luam
Steel Phaj Manufacturing txheej txheem
Steelmaking:Molten steel yog tsim los ntawm Hluav Taws Xob Hluav Taws Xob Hluav Taws Xob (EAF) lossis Basic Oxygen Rauv, tom qab ntawd nkag mus rau ladle refining rau chemistry tswj thiab degassing. Cov hlau yuav tsum tau "tua" thiab ua rau ib qho ntxhib austenitic grain lojxyaum.
Casting:Molten steel yog nruam nrum rau hauv slabs.
Reheating & Descaling:Slabs yog rhuab nyob rau hauv ib lub qhov cub thiab ces dhau los ntawm ib tug scale breaker kom tshem tawm cov hlau oxide txheej.
Kub Rolling:Khoos phib tawj- tswj cov mills txo cov slab rau qhov xav tau tuab.
Kev kho cua sov (Standard Dependent):
Tsawg dua los yog sib npaug50mm (2 nyob rau hauv):Feem ntau muab nyob rau hauv raws li -rolledmob.
>50mm (2 nyob rau hauv):Yuav tsum normalized(rhuab mus rau kwv yees li . 900-950℃thiab huab cua-txias) los kho cov qauv nplej.
Yeem:Normalizing + tempering, lossis quenching thiab tempering (Q + T) yog tias tau teev tseg.
Fabrication Flow (Rau Vessels / Boilers)
Txiav & Profileing:Siv laser, ntshav, lossis oxy-propane nplaim taws txiav kom ncav cuag cov duab uas xav tau.
Kev tsim:Yuav ua tau txias-tsim lossis kub- ua haujlwm (feem ntau ntawm 900℃thiab 200℃).
Vuam:Yooj yim weldable siv cov txheej txheem txheem xws li SMAW, GMAW (MIG), thiab GTAW (TIG). Rau qhov hnyav, ua ntej- cua sovthiab tom qab-weld heat treatment (PWHT)tau qhia.
Nto Finishing:Txhaj tshuaj tua blasting, pleev xim, lossis roj raws li xav tau rau kev tiv thaiv corrosion.
Kev tshuaj xyuas & kuaj:Xws li kev ntsuas tensile, kuaj ultrasonic (ib ASTM A435 / A578), thiab simulated PWHT ntawm daim coupon yog tias xav tau.
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 kev kho cua sov yuav tsum tau ua rau A515 Qib 70?
Tsis yog. Nws feem ntau yog muab nyob rau hauv raws li - dov los yog normalized mob. Normalization yog xaiv tau tab sis pom zoo rau cov phaj tuab los txhim kho toughness thiab microstructure uniformity.
Lub hom phiaj ntawm LF rauv refining hauv A515 Qib 70 yog dab tsi?
LF (ladle furnace) refining txhim kho steel huv si los ntawm slag refining, kho tshuaj muaj pes tsawg leeg, thiab tswj molten steel kub stability.
Vim li cas VD lub tshuab nqus tsev degassing siv qee qhov A515 Qib 70 ntau lawm?
VD (lub tshuab nqus tsev degassing) txo cov roj cov ntsiab lus (xws li hydrogen, oxygen) hauv cov hlau molten, txo cov kev puas tsuaj sab hauv thiab txhim kho cov hlau sab hauv purity thiab txhua yam ruaj khov.
Dab tsi ntawm qhov chaw raug tshem tawm thaum lub sij hawm A515 Qib 70 slab tu?
Cov khoom tsis xws luag xws li oxide nplai, cov kab nrib pleb, khawb, thiab cov txheej txheem sib cais raug tshem tawm los ntawm kev sib tsoo, sib tsoo, lossis tua blasting.
Txoj kev tshuaj xyuas dab tsi yog siv rau A515 Qib 70 daim hlau tiav?
Cov txheej txheem feem ntau suav nrog kev tshuaj xyuas qhov ntev, kev tshuaj xyuas qhov muag, kuaj ultrasonic (UT) rau qhov tsis xws luag sab hauv, kev ntsuas tensile, kev ntsuam xyuas cuam tshuam, thiab kev sim hardness.
Dab tsi yog qhov siab tshaj plaws ntawm A515 Qib 70 daim hlau rau ASTM A515?
Nws tuaj yeem muab tau txog li 8 ntiv tes (203 hli) tuab, nrog rau cov cuab yeej tshwj xeeb yuav tsum tau hloov kho rau cov ntu tuab.
A515 Qib 70 puas tuaj yeem welded?
Yog lawm. Nws yog tsim los rau cov qauv welded thiab muaj qhov zoo weldability thaum cov txheej txheem vuam zoo (xws li, preheating, post-kev kho cua sov) ua raws.
Qhov txawv ntawm A515 Qib 70 thiab A516 Qib 70 yog dab tsi?
A515 yog rau boiler thiab siab lub nkoj daim hlau siv nyob rau nruab nrab / siab kub, thaum A516 muaj stricter tej yam toughness yuav tsum tau thiab yog haum rau qis dua - kub kev pab cuam.
Cov ntawv thov twg yog A515 Qib 70 feem ntau siv rau?
Nws yog dav siv nyob rau hauv fabrication ntawm welded boilers, siab hlab ntsha, cia tso tsheb hlau luam, thiab tshav kub exchangers rau petrochemical, hluav taws xob tsim, thiab industrial sectors.
Dab tsi yog qhov pom zoo phosphorus (P) cov ntsiab lus txwv rau A515 Qib 70?
Cov ntsiab lus P siab tshaj plaws yog 0.035% (los ntawm qhov hnyav) kom tsis txhob brittleness thiab txhim kho cov khoom siv kho tshuab.
Cov qauv nplej ntawm A515 Qib 70 tswj tau li cas thaum lub sijhawm tsim khoom?
Kev tswj dov thiab normalization (yog tias siv) yog siv los kho cov qauv nplej, txhim kho cov hlau lub zog thiab toughness.
Dab tsi yog qhov yuav tsum tau kos npe rau A515 Qib 70 daim hlau?
Txhua lub phaj yuav tsum tau cim nrog qib (A515 Qib 70), tus naj npawb ntawm cov cua sov, tuab, cov chaw tsim khoom lub logo, thiab ua raws li ASTM A515 rau traceability.