ASTM A537 Qib 2yog ib qho kev qhia tshwj xeeb rau cov pa roj carbon-manganese- silicon siab lub nkoj steel daim hlau npaj rau siv hauv cov welded boilers thiab cov hlab ntsha siab uas yuav tsum tau txhim kho qhov kev sib tw ntawm qhov kub qis. Cov hlau feem ntau yog muab nkag rau hauv qhov kub thiab txias, uas ua rau nws muaj zog thiab tawv dua piv rau qis dua - lub zog carbon steels. Nws yog tsim los muab cov weldability zoo thiab txhim khu kev qha kev ua tau zoo nyob rau hauv nruab nrab mus rau siab dua thiab kub tej yam kev mob uas feem ntau pom nyob rau hauv cov roj, roj, thiab petrochemical ua cov cuab yeej, raws li zoo raws li nyob rau hauv lub zog tsim daim ntawv thov. Cov npe hauv chav kawm qhia txog kev sib xyaw ua ke ntawm cov khoom siv kho tshuab, tshwj xeeb tshaj yog nyob rau hauv cov nqe lus ntawm kev tawm los thiab lub zog tensile, nrog rau cov kev xav tau ntawm lub zog uas ua kom muaj kev tiv thaiv rau cov pob txha tawg.
Tshuaj muaj pes tsawg leeg ntawm ASTM A537 Chav Kawm 2
| Qib | C | Si | Mn | P | S | Cr | Mo | Ni | Cu | |
|---|---|---|---|---|---|---|---|---|---|---|
| ¡U 40 mm | >40 mm | |||||||||
| A537 Chav Kawm 2 | 0.24 | 0.15/0.50 | 0.70/1.35 | 1.00/1.60 | 0.035 | 0.035 | 0.025 | 0.080 | 0.25 | 0.35 |
Mechanical Properties ntawm ASTM A537 Chav Kawm 2
| Qib | Tawm tswv yim (MPa) | Tensile (MPa) | Elongation | Thickness | |
|---|---|---|---|---|---|
| A50 mm | A200 mm | ||||
| A537 Chav Kawm 2 | 415 | 550/690 | 22% | - | ¡Ü 65 |
| 380 | 515/655 | 22% | - | > 65 ¡Ü 100 | |
| 315 | 485/620 | 22% | - | > 100 ¡Ü 150 | |
daim ntawv thov
Cov hlab ntsha thiab boilers:
Siv rau welded siab hlab ntsha, boilers, thiab lwm yam siab- khaws cov khoom uas ua hauj lwm nyob rau hauv nruab nrab mus rau siab kub thiab xav tau zoo low- kub toughness.
Roj, roj, thiab cov khoom siv petrochemical:
Siv rau hauv cov txheej txheem cov hlab ntsha, cov khoom sib cais, cov tshuab ntxhua khaub ncaws, thiab lwm yam khoom siv los tuav cov hydrocarbons thiab cov txheej txheem dej hauv qab lub siab.
Thaum tshav kub kub exchangers thiab cia tank:
Siv nyob rau hauv cov cua kub exchangers, nrog rau cov cia tank thiab siab hlab ntsha rau ntau yam kua thiab gases.
Fais fab tuag systems:
Ua hauj lwm hauv boiler Cheebtsam thiab fais fab nroj tsuag cov khoom uas txhim khu kev qha kev ua tau zoo nyob rau hauv thermal thiab mechanical stress yog xav tau.
General khoom siv:
Siv nyob rau hauv ib tug ntau yam ntawm kev lag luam daim ntawv thov uas xav tau siab zog, zoo weldability, thiab kuj rau brittle puas.
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.
A537 Chav Kawm 2 yog dab tsi?
ASTM A537 Class 2 steel yog cov khoom siv siab dua thiab tensile lub zog siv hauv kev tsim cov hlab ntsha thiab cov boilers steel. Cov hlau muaj xws li alloying ntawm carbon, manganese thiab silicon thiab kho cua sov siv txoj kev quenched thiab tempered uas muab cov khoom nws residual zog.
Dab tsi yog qhov sib npaug ntawm A537 steel?
Nws thawj qhov sib npaug yog ASME SA537 Cl. 1, uas qhia cov kev qhia zoo ib yam raws li ASME SA537 / SA537M tus qauv. Thoob ntiaj teb, sib npaug suav nrog EN 10028-2 P355GH (1.0473), cov hlau tsis muaj hlau zoo sib xws nrog cov txiaj ntsig zoo sib xws thiab muaj pes tsawg leeg rau cov hlab ntsha siab.