SA283 Qib C yog cov qauv zoo, qis rau nruab nrab tensile lub zog carbon steel phaj siv rau kev siv dav siv xws li cov khoom siv hauv tsev, tso tsheb hlau luam, thiab cov cuab yeej siv, paub txog qhov yooj yim weldable thiab machinable, nrog cov khoom siv kho tshuab nrog rau qhov tsawg kawg nkaus lub zog ntawm 30 ksi (205 MPa) thiab tensile lub zog ntawm 55 {05 {8}. Nws yog ASME / ASTM tus qauv (A283 / A283M) rau kev siv cov qauv, sib txawv ntawm cov hlab ntsha siab, thiab tau muab raws li-dov, muab cov qauv zoo rau ntau yam fabrications.
NtsiabYam ntxwv:
Hom: Cov Qauv Carbon Steel Phaj.
Daim ntaub ntawv: Lub hom phiaj dav dav dav dav, qis- lub tank siab, kev tsim vaj tsev, khoom tsim khoom.
Lub zog: Tsawg rau nruab nrab tensile lub zog.
Weldability: Zoo, feem ntau suav tias yog mos thiab yooj yim rau vuam.
Puas yog SA283 Qib C Weldable?
Yog lawm, SA283 Qib C yog qhov zoo heev. Nws yog suav hais tias yog ib qho ntawm feem ntau weldable structural steel daim hlau vim nws cov ntsiab lus carbon tsawg (max 0.24%) thiab yooj yim tshuaj muaj pes tsawg leeg, uas txo qhov kev pheej hmoo ntawm hardening thiab tawg nyob rau hauv lub tshav kub - cuam tshuam cheeb tsam (HAZ).
Cov laj thawj tseem ceeb rau Weldability zoo:
Tsawg Carbon Equivalent (CEV): Nws ib txwm CEV tsawg heev (feem ntau qis dua 0.30), qhia tias muaj kev pheej hmoo tsawg ntawm hydrogen-induced (txias) tawg.
Tsis tas yuav tsum Preheat: Rau feem ntau thicknesses (feem ntau mus txog 1 nti / 25 mm) thiab nyob rau hauv ib txwm tej yam kev mob, preheating yog tsis yuav tsum tau. Qhov no simplifies fabrication.
Compatibility nrog Cov Txheej Txheem: Nws tuaj yeem yooj yim welded siv tag nrho cov txheej txheem txheej txheem:
Shielded Hlau Arc Vuam (SMAW)
Gas Metal Arc Vuam (GMAW/MIG)
Flux-Cored Arc Vuam (FCAW)
Submerged Arc Welding (SAW)
Cov kev coj ua zoo tshaj plaws rau kev ntseeg tau welds:
Consumables: Siv cov khoom siv, qis- zog electrodes xws li E60XX lossis E70XX series (AWS). Txhawm rau kom tau txais txiaj ntsig zoo tshaj plaws nrog cov txheej txheem tso nyiaj ntau dua, qis- hom hydrogen (E7018) raug pom zoo tab sis tsis tas yuav tsum tau ua.
Cov xwm txheej tshwj xeeb: Rau cov ntu tuab heev (piv txwv li,> 1.5 ntiv tes / 38 hli) lossis vuam hauv qhov chaw txias (hauv qab 50℃F / 10 degree), lub teeb preheat (150-250℃F / 65-120 degree) yuav ua tib zoo saib xyuas kom zoo fusion thiab tiv thaiv kom txias sai.
Kev huv huv: Txhua zaus tshem cov nplai zeb, xeb, noo noo, thiab cov kab mob ntawm qhov sib koom ua ntej vuam.
Sib piv rau Lwm Cov Hlau:
vs. Siab dua -Strength Steels (A572 Gr. 50): SA283 Gr. C yog kev zam txim ntau dua thiab yuav tsum muaj cov txheej txheem nruj dua.
vs. Siab Vessel Steels (SA516): SA516 feem ntau yuav tsum tau tswj cov txheej txheem thiab Charpy kuaj; SIB 283 gr. C tsis.
Kev txwv rau Ceeb Toom:
Nws cov weldability yog ib qho tseem ceeb feature, tab sis lub welded los ua ke yuav tsuas muaj zog npaum li lub hauv paus hlau. Lub HAZ yuav tuav lub hauv paus hlau cov khoom (~ 30 ksi tawm los). Nws tsis yog tsim los rau cov ntawv thov uas xav tau siab -kev ncaj ncees, cuam tshuam- kuaj welds (piv txwv li, cov hlab ntsha siab, qis- kev pabcuam kub).
Xaus: SA283 Qib C yog qhov kev xaiv zoo tshaj plaws rau kev tsim khoom siv dav dav uas yuav tsum tau vuam thiab sib sau. Nws tso cai rau kev yooj yim, nqi- vuam zoo yam tsis muaj cov txheej txheem nyuaj, ua rau nws nyiam hauv khw rau cov tso tsheb hlau luam, thav ntawv, thiab cov khoom siv.
1. Dab tsi yog SA283 Qib C?
SA283 Qib C yog qis-carbon, dav dav- lub hom phiaj steel phaj hauv ASTM A283 tus qauv, feem ntau yog siv rau qis- cov qauv kev nyuab siab xws li tso tsheb hlau luam, bins, thiab lub tsev thav duab uas yuav tsum tau siv vuam thiab sib sau.
2. Dab tsi yog qhov Yield Strength ntawm SA283 Qib C?
Qhov tsawg kawg nkaus tawm lub zog ntawm SA283 Qib C yog 30,000 psi (205 MPa), ua rau nws tsim nyog rau kev siv nrog cov qauv nruab nrab.
3. Qhov txawv ntawm SA283 Qib A, B, C, thiab D yog dab tsi?
Thawj qhov sib txawv yog nce zog: Qib A (24 ksi min yield), Qib B (27 ksi), Qib C (30 ksi), thiab Qib D (33 ksi). Cov qib siab dua muaj zog dua tab sis tsawg dua formability.
4. Puas yog SA283 Qib C Weldable?
Yog lawm, SA283 Qib C muaj qhov zoo tshaj plaws weldability vim nws cov ntsiab lus carbon tsawg, ua rau nws tsim nyog rau feem ntau txoj kev vuam xws li SMAW, GMAW, thiab SAW yam tsis tas yuav tsum muaj cov txheej txheem nyuaj.
5. Dab tsi yog SA283 Qib C sib npaug hauv Tebchaws Europe?
Qhov sib npaug nyob sab Europe zoo tshaj plaws yog S235JR (EN 10025-2) raws li qhov sib piv cov khoom siv zog (~ 235 MPa nominal) thiab daim ntawv thov dav dav. Nco ntsoov tias S235JR muaj qhov yuav tsum tau muaj kev cuam tshuam toughness.
6. Qhov twg yog SA283 Qib C nquag siv?
Nws yog siv nyob rau hauv fabricating cia tank, dej yees, ductwork, lub tsev thav duab, cov khoom ua liaj ua teb, thiab lwm yam structural Cheebtsam tsis raug rau siab los yog siab.
7. SA283 Qib C puas tuaj yeem Galvanized?
Yog lawm, nws qis- carbon, qis- alloy muaj pes tsawg leeg ua rau nws yog ib tus neeg sib tw zoo rau kub-dip galvanizing, feem ntau yog siv rau sab nraum zoov cov khoom siv uas xav tau kev tiv thaiv corrosion.
8. Cov tshuaj muaj pes tsawg leeg ntawm SA283 Qib C yog dab tsi?
Cov muaj pes tsawg leeg muaj xws li Carbon (max 0.24%), Manganese (max 0.90%), Phosphorus (max 0.035%), thiab Sulfur (max 0.04%), kom ntseeg tau zoo weldability thiab formability.
9. Puas yog SA283 Qib CA Pressure Vessel Steel?
Tsis yog, nws tsis raug ntsuas rau siab - tuav kev pabcuam. Rau cov hlab ntsha siab, cov ntaub ntawv zoo li SA516 Qib 60 lossis 70 (nrog rau qhov yuav tsum tau ua kom tawv nqaij) yog tsim tshwj xeeb thiab coded rau lub hom phiaj ntawd.
10. Qhov txawv ntawm SA283 thiab A283 yog dab tsi?
Tsis muaj kev sib txawv. A283 yog tus qauv ASTM cov ntaub ntawv, thaum SA283 yog ASME Boiler thiab Pressure Vessel Code txais yuav tib tus qauv, yuav tsum tau ASME- ntawv pov thawj raws cai rau cov cai- khi cov khoom.
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.
