Cov tshuaj muaj pes tsawg leeg ntawm ASME SA537 Chav Kawm 2 yog dab tsi?
ASME SA537 Chav Kawm 2yog quenched thiab tempered carbon -manganese- silicon steel, optimized rau siab hlab ntsha thiab boiler daim ntaub ntawv, nrog ib tug siab tshaj plaws carbon ntsiab lus ntawm 0.24% thiab manganese li ntawm 0.70 mus rau 1.60% (nyob ntawm seb thickness). Nws yuav tsum muaj kev tswj hwm nruj ntawm phosphorus (tsawg dua lossis sib npaug0.025%) thiab sulfur (tsawg dua lossis sib npaug0.010–0.025%) los txhim kho toughness thiab weldability.
ASME SA537 Chav Kawm 2 yog qib qib engineered steel uas siv tshuaj lom neeg alloying -tshwj xeeb Manganese thiab Silicon- ua ke nrog kev kho cua sov thiab quenched kom ua tiav kev ua haujlwm siab. Cov khoom no tau teev tshwj xeeb hauv Boiler thiab Pressure Vessel Code rau nws lub peev xwm los tiv taus siab tensile loads thiab cuam tshuam quab yuam. Nws cov nqi tseem ceeb yog nyob rau hauv nws cov txiaj ntsig siab, uas tso cai rau cov tuam txhab tsim cov khoom sib zog tsis tau muaj zog rau cov roj, roj, thiab tshuaj ua lag luam.
Cov yam ntxwv tseem ceeb
Uniform Hardness:Lub quenching tswj xyuas kom meej tias lub phaj tsis dhau nkig thaum tuav lub siab hardness.
Tshuaj Purity:Qib qis ntawm sulfur thiab phosphorus txo qis qhov kev pheej hmoo ntawm kev puas tsuaj sab hauv thiab suav nrog.
Formability:Txawm hais tias nws lub zog siab, cov hlau tuaj yeem txias - ua rau cov duab cylindrical lossis kheej kheej yam tsis muaj kev ntseeg siab.
Qib Qib
ASME: American Society of Mechanical Engineers.Qhov no qhia tau hais tias cov khoom ua raws li covASME Boiler thiab Pressure Vessel Code (BPVC), tshwj xeeb tshooj II, Ntu A.
S :Qhov no prefix qhia tias cov khoom yogpom zoo tshwj xeebsiv rau hauv ASME siab hlab ntsha kev tsim kho.
A :Cov ntsiab lusKhoom siv ferrous(hlau los yog hlau).
537 :CovStandard Specification naj npawb. Nws txheeb xyuas cov pab pawg tshwj xeeb ntawm "Tshav Kub-Tho Carbon-Manganese-Silicon Steel Phaj" npaj rau fusion-welded siab hlab ntsha.
Chav Kawm 2:Txhais covKev kho cua sov thiab qib zog.
Tsis zoo li Chav Kawm 1 (uas tsuas yog Normalized),Chav Kawm 2 yog quenched thiab Tempered (Q&T).
Kev sib piv: SA537 Chav Kawm 2 vs. SA516 Qib 70
Txoj kev ua kom txias:SA516-70 feem ntau yogRaws li - dovlos yogLi qub; SA537 Chav Kawm 2 yogQuenched thiab Tempered.
Tensile zog:SA537 Chav Kawm 2 (80-100ksi) yog qhov siab dua SA516-70 (70-90 ksi).
Thickness Ua Haujlwm:SA537 Chav Kawm 2 tso cai rauphab ntsa nyiasvim nws lub zog tawm los ntau dua (60 ksi vs 38 ksi).
Alloy Cov ntsiab lus:SA537 muaj ntau duaManganese thiab Siliconrau superior notch toughness piv rau standard carbon steel.
Cov ntawv thov siv
Hydro-processing Reactors:Siv nyob rau hauv refineries los kho roj ntawm qhov kub thiab txias.
De-Aerators:Cov hlab ntsha tshwj xeeb uas siv los tshem tawm cov pa oxygen los ntawm boiler feedwater.
Geothermal Steam Separators:Cov chav tsev uas cais cov pa los ntawm cov brine hauv siab - qhov dej siab hauv qhov dej kub.
Cryogenic Cold Boxes:Cov qauv plhaub rau cov cua sib cais chav nyob hauv cov nroj tsuag muaj roj.
High-Npaj roj lim Housings:Industrial filtration units siv nyob rau hauv natural gas kis kab.
Cov kev lag luam twg siv ASME SA537 Chav Kawm 2?
ASME SA537 Chav Kawm 2 feem ntau siv hauv kev lag luam xws li petrochemical, roj thiab roj, tsim hluav taws xob, thiab kev ua tshuaj lom neeg. Nws yog feem ntau siv nyob rau hauv fabrication ntawmcov hlab ntsha siab, kub exchangers, reactors, thiab lwm yam khoom siv uas yuav tsum tiv taus qhov kub thiab txias. Cov ntaub ntawv toughness, lub zog, thiab zoo weldability ua rau nws ib tug nrov kev xaiv nyob rau hauv cov sectors no.
Dab tsi yog sulfur ntsiab lus hauv ASME SA537 Chav Kawm 2?
Cov ntsiab lus sulfur hauv ASME SA537 Chav Kawm 2 yog txwv rau qhov siab tshaj plaws ntawm 0.035%. Sulfur tuaj yeem ua rau embrittlement, tshwj xeeb tshaj yog nyob rau hauv qhov kub thiab txias, yog li txo nws cov ntsiab lus yuav pab txhim kho cov hlau qhov toughness thiab cuam tshuam tsis kam. Cov ntsiab lus tsis muaj leej faj txhim kho cov khoom siv tag nrho, ua rau nws tsim nyog rau kev siv cov hlab ntsha hauv kev xav tau.
Dab tsi yog cov ntsiab lus phosphorus hauv ASME SA537 Chav Kawm 2?
Cov ntsiab lus phosphorus hauv ASME SA537 Chav Kawm 2 yog txwv rau qhov siab tshaj plaws ntawm 0.035%. Phosphorus tuaj yeem cuam tshuam tsis zoo rau cov hlau qhov tawv, tshwj xeeb tshaj yog nyob rau qhov kub thiab txias. Los ntawm kev ua kom cov phosphorus qis qis, ASME SA537 Chav Kawm 2 xyuas kom meej tias cov khoom tseem tawv thiab tiv taus cov pob txha tawg, uas yog qhov tseem ceeb rau cov hlab ntsha siab uas siv nyob rau hauv qis - qhov kub thiab txias.
ASME A537 Chav Kawm 2 Cov Khoom Siv Tshuaj:
| C | Mn | P | S | Si | Cr | Cu | Ni | Mo | |
| Tsawg dua los yog sib npaug li 40 mm | >40 mm | ||||||||
| 0.24 max | 0.70/1.35 | 1.00/1.60 | 0.035 | 0.035 | 0.15/0.50 | 0.025 | 0.35 | 0.25 | 0.080 |
ASME SA537 Chav Kawm 2 Mechanical Properties:
| Qib | Kev kho cua sov | Tensile (MPa) | Tawm tswv yim (MPa) | Elongation |
| SA537 Chav Kawm 2 | Quenched thiab tempered | 550–690 | 415 | 22% |
1. Dab tsi yog txheej txheem kev kho cua sov rau ASME SA537 Chav Kawm 2?
ASME SA537 Chav Kawm 2 tau dhau los ua cov txheej txheem quenching thiab tempering cua sov. Cov hlau yog rhuab mus rau qhov kub siab, ces txias sai heev (quenched), thiab tempered ntawm qhov kub thiab txias. Cov txheej txheem no txhim kho cov hlau lub zog, toughness, thiab tsis kam mus rau nkig tawg, ua rau nws tsim nyog rau cov hlab ntsha siab thiab lwm yam tseem ceeb uas yuav tsum tau tiv taus siab thiab kub.
2. Lub zog tensile ntawm ASME SA537 Chav Kawm 2 yog dab tsi?
Lub zog tensile ntawm ASME SA537 Chav Kawm 2 feem ntau yog li ntawm 70 ksi (485 MPa) txog 90 ksi (620 MPa). Qhov ntau yam no tso cai rau cov khoom siv los tiv thaiv kev ntxhov siab ntawm cov neeg kho tshuab thaum tuav nws cov qauv kev ncaj ncees. Cov hlau yog tsim los siv rau hauv kev siv xws li cov hlab ntsha siab, qhov xav tau lub zog siab los tswj lub siab sab hauv yam tsis ua haujlwm.
3. Cov ntsiab lus carbon hauv ASME SA537 Class 2 yog dab tsi?
Cov ntsiab lus carbon hauv ASME SA537 Chav Kawm 2 feem ntau yog li ntawm 0.12% txog 0.20%. Cov ntsiab lus qis carbon no ua kom zoo dua weldability thiab txo qhov kev pheej hmoo ntawm kev tawg thaum lub sijhawm vuam. Qhov sib npaug ntawm lub zog thiab ductility ua rau nws tsim nyog rau cov hlab ntsha siab thiab cov khoom tseem ceeb uas raug rau qhov siab thiab qhov kub thiab txias, ua kom muaj kev ntseeg siab thiab ua haujlwm ntev hauv kev ntxhov siab.
4. Cov tshuaj muaj pes tsawg leeg ntawm ASME SA537 Chav Kawm 2 yog dab tsi?
Cov tshuaj muaj pes tsawg leeg ntawm ASME SA537 Chav Kawm 2 suav nrog:,Cov pa roj carbon (C): 0.12-0.20%,Manganese (Mn): 0.60-1.35%,Silicon (Si): 0.15-0.40%,Phosphorus (P):Tsawg dua lossis sib npaug li 0.035%,Sulfur (S):Tsawg dua los yog sib npaug li 0.035%, Qhov kev sib xyaw no muab qhov sib npaug ntawm lub zog, tawv, thiab weldability, kom ntseeg tau tias cov khoom ua tau zoo hauv kev thov cov hlab ntsha siab.
5. Dab tsi yog qhov elongation ntawm ASME SA537 Chav Kawm 2?
ASME SA537 Chav Kawm 2 feem ntau muaj qhov elongation tsawg kawg yog 18% hauv 8 ntiv tes (200 hli). Qhov no qhia tau hais tias cov ntaub ntawv muaj peev xwm ncav cuag thiab deform yam tsis muaj kev tawg, uas yog qhov tseem ceeb hauv kev siv cov hlab ntsha siab uas cov khoom yuav ntsib kev ntxhov siab lossis kev cuam tshuam tam sim ntawd. Qhov siab elongation no ua kom cov kav ntev thiab kev nyab xeeb hauv kev ua haujlwm hnyav.
6. Dab tsi yog qhov weldability ntawm ASME SA537 Chav Kawm 2?
Yog lawm, ASME SA537 Chav Kawm 2 yog vuam, tab sis yuav tsum tau saib xyuas tshwj xeeb thaum lub sijhawm vuam. Preheating ua ntej welding thiab post-weld heat treatment (PWHT) raug pom zoo kom txo tau qhov kev pheej hmoo ntawm kev tawg thiab kev ntxhov siab. Cov ntsiab lus qis carbon tsawg hauv qib steel no pab txhim kho nws cov weldability piv rau cov pa roj carbon ntau dua.
7. Dab tsi yog qhov cuam tshuam toughness ntawm ASME SA537 Chav Kawm 2?
ASME SA537 Chav Kawm 2 yog kuaj rau kev cuam tshuam toughness ntawm qhov kub thiab txias, feem ntau ntawm -50℃F (-46℃). Cov khoom siv yuav tsum nqus tsawg kawg 20 ft-lbs (27 J) ntawm lub zog yam tsis muaj kev tawg. Qhov no ua kom cov hlau muaj peev xwm ua tau raws li qhov cuam tshuam los yog thermal shocks, uas yog ib qho tseem ceeb hauv kev lag luam xws li petrochemical lossis nuclear, qhov chaw siab ntawm cov hlab ntsha raug hloov pauv tam sim ntawd.
Yog xav paub ntxiv txogASME SA537 Chav Kawm 2GNEE cov khoom, koj tuaj yeem xa email rau toinfo@gneesteels.com . Peb zoo siab tshaj los pab koj.
