ASTM A515 Qib 70yog cov pa roj carbon-manganese steel phaj tsim los rau nruab nrab-kub siab lub nkoj kev pabcuam. Ua rau ASTM A515, nws yog tsim rau fusion vuam nyob rau hauv boilers thiab siab hlab ntsha. Qib no muaj lub zog zoo, toughness, thiab weldability, kom ntseeg tau tias kev ua tau zoo ntawm qhov kub siab. Nws yog feem ntau siv rau cov khoom siv ntawm cov hlab ntsha siab, cov tso tsheb hlau luam, thiab cov boiler qhov chaw uas yuav tsum tau ua haujlwm zoo nyob rau hauv lub siab thiab kub.
Chemical Composition ntawm ASTM A515 Qib 70
|
Element |
Product Analysis Max (%) |
Ladle Analysis Max (%) |
|---|---|---|
|
Cov pa roj carbon (C) |
0.30-0.35 |
0.30-0.35 |
|
Manganese (Mn) |
1.30 |
1.20 |
|
Phosphorus (P) |
0.035 |
0.035 |
|
Sulfur (S) |
0.035 |
0.035 |
|
Silicon (Si) |
0.13-0.45 |
0.15-0.40 |
Mechanical Properties ntawm ASTM A515 Qib 70
|
Thickness (hli) |
Yield zog (Min Mpa) |
Tensile zog (Mpa) |
Elongation (Min%) |
|---|---|---|---|
|
Tsawg dua los yog sib npaug li 200 |
260 |
485-620 |
17 |
|
Tsawg dua los yog sib npaug li 50 |
260 |
485-620 |
21 |
Sib piv nrog Lwm Cov Qib ASTM A515
|
Khoom |
A515 Qib 60 |
A515 Qib 65 |
A515 Qib 70 |
|---|---|---|---|
|
Cov ntsiab lus carbon (Max%) |
0.24-0.31 |
0.28-0.33 |
0.30-0.35 |
|
Manganese (Max%) |
0.98 |
0.98 |
1.30 |
|
Yield zog (Min Mpa) |
220 |
240 |
260 |
|
Tensile zog (Mpa) |
415-550 |
450-585 |
485-620 |
|
Elongation (Min%, 200mm) |
21 |
19 |
17 |
Kev sib piv nrog ASTM A516 Qib
|
Khoom |
A515 Qib 70 |
A516 Qib 55 |
A516 Qib 60 |
A516 Qib 65 |
A516 Qib 70 |
|---|---|---|---|---|---|
|
Kev Pabcuam Kub |
Nruab nrab / Siab |
Nruab nrab / qis |
Nruab nrab / qis |
Nruab nrab / qis |
Nruab nrab / qis |
|
Cov ntsiab lus carbon (Max%) |
0.30-0.35 |
0.18-0.26 |
0.21-0.27 |
0.24-0.29 |
0.27-0.31 |
|
Yield zog (Min Mpa) |
260 |
205 |
220 |
240 |
260 |
|
Tensile zog (Mpa) |
485-620 |
380-515 |
415-550 |
450-585 |
485-620 |
|
Elongation (Min%, 200mm) |
17 |
27 |
25 |
23 |
21 |
ua
Melting thiab RefiningASTM A515 Qib 70 pib nrog melting hlau ore thiab seem hlau nyob rau hauv lub cub tawg, ua raws li los ntawm refining los tswj cov pa roj carbon, manganese, thiab lwm yam khoom. Cov kauj ruam no ua kom cov tshuaj muaj pes tsawg leeg ua tau raws li tus qauv kev cai rau lub zog thiab weldability.
Nruam Casting: Cov hlau molten yog cam khwb cia rau hauv slabs los yog tawg siv cov khoom siv nruam nruam. Cov txheej txheem no pab tswj cov qauv zoo ib yam thiab txo qis kev sib cais, muab lub hauv paus ruaj khov rau cov khoom siv kho tshuab zoo ib yam hauv cov phaj kawg.
Kub Rolling: Cov slabs cam khwb cia yog reheated thiab dov rau hauv daim hlau ntawm qhov xav tau thickness. Kev tswj cov txheej txheem dov ua kom zoo dua cov qauv nplej, txhim kho toughness thiab lub zog thaum ua kom zoo zoo.
Kev kho cua sov (thaum xav tau): Raws li qhov tuab thiab daim ntawv thov, qee daim hlau tuaj yeem ua rau lub cev tsis zoo lossis kev ntxhov siab-nyem annealing. Cov kev kho mob no txhim kho ductility, txo cov kev ntxhov siab sab hauv, thiab ua kom zoo dua weldability rau kev tsim cov hlab ntsha siab.
Descaling thiab Conditioning: Tom qab dov, cov phaj yog descaled kom tshem tawm cov oxide txheej thiab tom qab ntawd tshuaj xyuas qhov tsis xws luag. Cov txheej txheem txias xws li kev sib tsoo kom cov khoom ua tau raws li qhov yuav tsum tau ua kom tiav thiab qhov ntev ntev.
Kev kuaj thiab tshuaj xyuas: Cov phaj raug kuaj xyuas nruj, suav nrog kev tshuaj xyuas tshuaj, tshuaj xyuas cov cuab yeej cuab tam, kev tshuaj xyuas ultrasonic, thiab kev kuaj pom. Cov kev ntsuam xyuas no txheeb xyuas qhov ua tau raws li ASTM A515 cov qauv, kom ntseeg tau tias muaj kev ntseeg siab rau kev siv cov hlab ntsha tseem ceeb.
daim ntawv thov
Cov Khoom Siv Hluav Taws Xob thiab BoilersASTM A515 Qib 70 yog dav siv nyob rau hauv fabricating siab hlab ntsha, boilers, thiab tshav kub exchangers. Nws lub zog zoo thiab weldability ua rau nws haum rau lub plhaub, lub taub hau, thiab lwm yam khoom siv uas ua haujlwm nyob rau hauv nruab nrab qhov kub thiab txias.
Kev lag luam roj thiab roj: Cov khoom siv feem ntau yog ua haujlwm hauv refineries, roj ua cov nroj tsuag, thiab cov chaw petrochemical. Nws yog siv rau cov txheej txheem cov hlab ntsha, cov khoom sib cais, thiab cov tso tsheb hlau luam uas tuav cov hydrocarbons thiab lwm cov kua dej hauv cov kev pabcuam nruab nrab.
Cov cuab yeej tsim hluav taws xob: Hauv cov chaw tsim hluav taws xob, nws yog siv rau boiler nruas, headers, thiab cov khoom sib txuas. Nws muaj peev xwm tiv taus thermal cycling thiab tswj kev ncaj ncees ntawm qhov kub thiab txias txhawb kev txhim khu kev lag luam tsim hluav taws xob.
General Industrial Fabrication: Cov phaj steel yog siv rau hauv ntau yam kev lag luam, nrog rau cov txheej txheem kev txhawb nqa, cov tshuab hnyav, thiab cov khoom siv uas xav tau kev sib npaug ntawm lub zog thiab kev ua haujlwm zoo.
Kev kho dej thiab dej khib nyiab: Nws yog siv nyob rau hauv lub tso tsheb hlau luam, clarifiers, thiab siab hlab ntsha rau kev kho dej. Nws durability thiab tsis kam mus rau nruab nrab corrosion nyob rau hauv cov dej ib puag ncig ua rau nws ib tug tswv yim xaiv rau xws li infrastructure.
Tag nrho cov specification thiab cov ntsiab lus muaj nyob rau ntawm kev thov. Cov ntaub ntawv saum toj no yog muab rau kev taw qhia nkaus xwb. Rau kev tsim tshwj xeeb thov hu rau peb cov neeg ua haujlwm muag khoom.
Dab tsi yog qhov yuav tsum tau elongation rau ASTM A515 Qib 70?
Qhov tsawg kawg nkaus elongation yog 20% hauv 2-nti (50.8 mm) ntsuas qhov ntev. Elongation ntsuas cov khoom ductility, qhia tias nws muaj peev xwm ncab ua ntej tawg, uas yog qhov tseem ceeb rau fabrication thiab kev nyab xeeb.
ASTM A515 Qib 70 puas tuaj yeem ua tau txias-?
Yog lawm, nws tuaj yeem ua kom txias - tsim, tab sis yuav tsum muaj cov txheej txheem tsim nyog. Cold forming tuaj yeem ua rau muaj kev ntxhov siab ntau ntxiv thiab txo cov ductility, yog li kev ntxhov siab txo kev kho cua sov feem ntau pom zoo tom qab kev sib sau txias kom rov qab muaj zog.
Dab tsi yog qhov txawv ntawm ASTM A515 Qib 60 thiab Qib 70?
Qhov sib txawv tseem ceeb yog tensile thiab yield zog: Qib 70 muaj siab dua tensile (70 ksi vs . 60 ksi) thiab tawm los (38 ksi vs . 30 ksi) lub zog. Qib 70 yog siv rau kev thov siab thiab kub ntau dua li Qib 60.
Puas yog ASTM A515 Qib 70 corrosion-resistant?
Nws muaj qhov nruab nrab corrosion kuj nyob rau hauv ib puag ncig me me tab sis tsis muaj zog tiv taus corrosion hnyav (xws li, acidic lossis ntsev). Kev tiv thaiv ntxiv xws li tha xim, galvanizing, lossis txheej yog xav tau rau siv nyob rau hauv ib puag ncig corrosive.
Dab tsi yog tus qauv thickness ntau rau ASTM A515 Qib 70 steel daim hlau?
Tus qauv thickness ntau yog feem ntau 3/16 nti (4.76 mm) txog 6 nti (152.4 mm). Cov phaj tuab tuaj yeem muaj nrog kev txiav txim tshwj xeeb, tab sis lawv yuav tsum muaj kev tswj hwm nruj dua thiab kuaj xyuas kom ua tau zoo.
Dab tsi yog daim ntawv ASTM A515 Qib 70 feem ntau nkag rau hauv?
Nws yog feem ntau muab los ua kub- dov steel phaj. Cov phaj yog daim ntawv nyiam rau cov hlab ntsha, boilers, thiab tso tsheb hlau luam vim lawv tuaj yeem txiav tau yooj yim, tsim, thiab welded rau hauv cov duab xav tau.
Dab tsi yog cov qauv tswj kev tsim khoom ntawm ASTM A515 Qib 70?
Nws yog tswj hwm los ntawm ASTM International tus qauv ASTM A515 / A515M, uas qhia meej txog cov kev xav tau ntawm cov pa roj carbon steel phaj rau cov hlab ntsha siab siv hauv nruab nrab thiab siab - kev pabcuam kub.
Dab tsi yog qhov kub siab tshaj plaws ASTM A515 Qib 70 tuaj yeem tiv taus tsis tu ncua?
Nws tuaj yeem tiv taus qhov kub thiab txias mus txog 650 ° F (343 ° C). Ntawm qhov kub siab tshaj qhov no, nws lub zog tensile thiab creep tsis kam txo, uas ua rau cov cuab yeej tsis ua haujlwm dhau sijhawm.
ASTM A515 Qib 70 puas tuaj yeem siv rau kev siv cryogenic?
Tsis yog, nws tsis haum rau cov ntawv thov cryogenic (kub qis dua -20℃F / -29℃). Ntawm qhov kub thiab txias, nws tuaj yeem ua nkig thiab poob tawv, ua rau muaj kev pheej hmoo ntawm pob txha. Tshwj xeeb cryogenic steels yuav tsum tau hloov.