Yog qib A285 C ASTM kub dov steel phaj haum rau qis -kev siv kub

ASTM A285 yog cov qauv kev qhia tshwj xeeb rau cov pa roj carbon steel daim hlau npaj rau nruab nrab thiab qis - kev siv lub nkoj siab, muab faib ua peb qib: A, B, thiab C.

Ntawm lawv,A285 Qib C boilers thiab siab nkoj steel phajyog qhov siab tshaj - lub zog sib txawv hauv cov koob no, feem ntau yog siv hauv kev lag luam xws li petrochemicals, lub zog tsim hluav taws xob, thiab kev tsim khoom dav dav rau kev tsim cov hlab ntsha siab, cov khoom siv hluav taws xob, thiab cov khoom siv hauv cov kev xav tau nruab nrab. Txawm li cas los xij, nws qhov tsim nyog rau qhov qis - qhov kub thiab txias ib puag ncig yuav tsum tau nyob rau hauv - tsom xam qhov tob.

Chemical Composition thiab Mechanical Properties ntawm ASTM A285 Qib C

Tsawg- qhov kub thiab txias ib puag ncig (feem ntau hauv qab -20 degree) xav tau steels nrogsuperior cuam tshuam toughnesskom tsis txhob nkig tawg. Cov pob txha tawg tshwm sim thaum cov khoom siv tam sim ntawd tawg nyob rau hauv kev ntxhov siab ntawm qhov kub thiab txias, tsis muaj ductility rau deform plastically.

Rau A285 Qib C carbon steel phaj:

Tsis muaj tsawg-Tsub Toughness Tsim: Tsis zoo li kev mob siab rau qis-kub steels (piv txwv li, ASTM A203 Qib B, A333 Qib 6), A285 Qib C kub dov steel phaj tsis yog tsim los khaws cov toughness hauv qab 0℃. Nws qhov cuam tshuam lub zog poob qis heev thaum qhov kub thiab txias txo, ua rau nws yooj yim tawg nyob rau hauv txawm tias muaj kev cuam tshuam me me lossis kev ntxhov siab hauv sub-zero tej yam kev mob.

Txheem txwv: ASTM A285 Qib C siab nkoj steel phaj qhia meej meej lub hom phiaj "nruab nrab mus rau qis- kev siv lub nkoj siab" nyob rau hauv ib qho kev khiav hauj lwm kub ntawmambient rau ~ 200℃(390℉). Tsis muaj kev pab cuam rau qis- qhov kub thiab txias, txhais tau tias nws qhov kev ua haujlwm qis dua 0℃tsis tsim nyog thiab tsis tau lees paub los ntawm tus qauv.

Tsawg-kub steels (LTCS) yog tsim los tswj kev ua haujlwm zoo ntawm sub-zero kub, feem ntau categorized los ntawm lawv qhov kev pab cuam yam tsawg kawg nkaus:

Medium LTCS: -20℃rau -45℃(piv txwv li ASTM A353, 16MnDR)

Deep LTCS-45℃rau -196℃(xws li ASTM A203 Qib B, A333 Qib 8)

Cov yam ntxwv tseem ceeb ntawm LTCS suav nrog:

Alloying Elements: Nickel (Ni), manganese (Mn), thiab qee zaum molybdenum (Mo) tau ntxiv los ua kom zoo dua cov qauv nplej thiab txhim kho qis- qhov kub thiab txias. Piv txwv li, ASTM A203 Qib B muaj 3.25–3.75% Ni, ua kom nws khaws Akv Ntau dua lossis sib npaug rau 47 J ntawm -45 degree.

Kev sim cuam tshuam nruj: LTCS tau txais Charpy V- qhov ntsuas qhov cuam tshuam ntawm lawv qhov ntsuas qhov ntsuas qhov tsawg kawg nkaus kom paub meej txaus ductility. Hauv qhov sib piv, A285 C tsuas yog xav tau chav- ntsuas qhov kub thiab txias, uas tsis cuam tshuam rau qis- kev ua haujlwm kub.

Muaj tsawg zaus, A285 Qib C carbon steel phaj yuav siv tau rau hauvme ntsis qis-kub qhov xwm txheejqhov twg:

Kev khiav hauj lwm kub tsis poob qis dua -10 degree.

Daim ntawv thov cuam tshuam nrog lub siab tsis tshua muaj siab (zoo hauv qab lub nkoj tsim lub siab) thiab tsis muaj kev thauj mus los lossis cuam tshuam.

Kev ntsuam xyuas cov khoom siv dav dav yog ua, suav nrog kev ntsuas qhov ntsuas qis qis dua - txhawm rau txheeb xyuas qhov tsim nyog.

Txawm li cas los xij, txawm tias nyob rau hauv cov xwm txheej zoo li no, qhov kev pheej hmoo ntawm cov pob txha tawg tseem ceeb heev. Kev lag luam kev coj ua zoo tshaj plaws txwv tsis pub siv A285 Qib C rau txhua daim ntawv thov uas kub tuaj yeem poob qis dua 0 degree.

Cov ntaub ntawv tshawb fawb los ntawm cov nroj tsuag petrochemical qhia txog qhov txaus ntshai: Lub nkoj siab tsim los ntawm A285 Qib C tau siv los khaws cia nruab nrab ntawm -15 degree.

Thaum lub sij hawm ib tug niaj hnub soj ntsuam, ib tug hairline tawg tau pom nyob rau hauv lub nkoj lub plhaub, uas propagated sai sai nyob rau hauv lub siab, ua rau ib tug xau.

Kev sim tom qab tau qhia tias A285 Qib C phaj tau pom yuav luag tsis muaj ductility ntawm -15 degree, lees paub qhov tawg tawg. Hloov lub nkoj nrog

Txhawm rau kom muaj kev nyab xeeb thiab ua raws li:

Txhais kev ua haujlwm: Kom meej meej sau qhov tsawg kawg nkaus kub, siab, nruab nrab, thiab txhua yam dynamic loads.

Sib tham Standards: Xa mus rau ASTM, ASME, lossis EN cov qauv (piv txwv li, ASME BPVC Tshooj II, EN 10028) txhawm rau txheeb xyuas LTCS tsim nyog rau .

Tshawb xyuas cov ntawv pov thawj: Xyuas kom cov hlau phaj tuaj nrog daim ntawv qhia txog zeb xeem (MTR) ua pov thawj nws cov tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab, thiab (rau LTCS) qis - qhov kub thiab txias ua haujlwm.

Koom nrog cov kws tshaj lij: Koom tes nrog cov kws tsim khoom siv khoom lossis -tus neeg soj ntsuam thib peb kom siv tau cov kev xaiv khoom, tshwj xeeb tshaj yog rau cov ntawv thov tseem ceeb.

ASTM A285 Qib C kub dov steel phaj yogtsis haum rau tiag tiag low{0}}kub daim ntaub ntawvvim nws tsis muaj alloying rau qis -kub toughness thiab tsis muaj ntawv pov thawj rau sub- xoom kev pab cuam. Rau ib qhov project uas muaj qhov kub thiab txias qis dua 0 degree, tsuas yog siab qis -kub steels (LTCS) uas ua tau raws li qhov yuav tsum tau muaj kev sib xyaw ua ke. Nco ntsoov sab laj nrog cov kws tshaj lij thiab ua raws li cov qauv kev lag luam kom ntseeg tau tias muaj kev ntseeg siab thiab kev nyab xeeb ntawm koj cov khoom siv.

Thov Ib Daim Quote

Yog tias koj xav paub ntxiv txog GNEE cov khoom, koj tuaj yeem xa email raualloy@gneesteelgroup.com. Peb zoo siab tshaj los pab koj.