A500 Qib C yog dab tsi
ASTM A500 Qib C yog qib siab -lub zog ntawm tus qauv rau txias- ua welded thiab seamless carbon steel structural tubing nyob rau hauv round, square, thiab rectangular duab, hu ua hollow structural seem (HSS). Nws tau teev tseg thaum cov qauv tsim tau txais txiaj ntsig los ntawm lub zog siab dua- rau- qhov hnyav piv: nrog qhov tsawg kawg nkaus tawm lub zog ntawm 50,000 psi (345 MPa) thiab lub zog tensile yam tsawg kawg nkaus ntawm 62,000 psi (425 MPa), Qib C ntu nqa ntau dua li qib A lossis B ntu kev lag luam, tso cai rau cov qauv sib txawv thiab qhov loj me.
Mechanical Properties
Cov khoom pov thawj ntawm Qib C yog qhov tsawg kawg nkaus lub zog ntawm 50,000 psi (345 MPa) thiab lub zog tensile yam tsawg kawg nkaus ntawm 62,000 psi (425 MPa), nrog rau qhov yuav tsum tau elongation los ntawm phab ntsa thickness. Vim tias lub zog los ntawm qhov txias txias thiab micro-alloying ntawm lub hauv paus steel, seem coj tus cwj pwm zoo hauv kev tsim, thiab cov khoom yog muab los ntawm AISC phau ntawv rau kev suav cov qauv. Rau dynamic lossis seismic tsim, elongation thiab qib ductility yuav tsum raug txheeb xyuas raws li qhov yuav tsum tau ua.
Kev tsim khoom
Qib C raj yog txias-tsim los ntawm sawb los yog phaj thiab kaw los ntawm hluav taws xob tiv thaiv vuam los ntawm tag nrho cov phab ntsa tuab, ces loj mus rau qhov kawg square los yog duab plaub. Kev sib sau txias ua rau lub zog ntawm cov khoom saum toj no raws li - dov phaj nqi. Tus txheej txheem kuj tso cai seamless ntau lawm qhov twg ib tug longitudinal seam tsis tau. Lub vuam zoo yog raug txheeb xyuas los ntawm kev sib tw, khoov, thiab tsis yog -kev ntsuas kev puas tsuaj ntawm tus qauv, thiab daim ntawv pov thawj qhia txog chemistry thiab tensile cov txiaj ntsig.
Daim ntawv thov
Qib C yog siv nyob rau qhov twg cov loads pom zoo rau qib siab dua: lub tsev kab thiab thav duab, cov neeg siv choj, kev txhawb nqa cov khoom hnyav, cov qauv kev loj, crane thiab conveyor thav ntawv, thiab lwm yam kev siv cov txheej txheem uas ib ntu sib zog txuag cov khoom siv thiab kev thauj mus los. Nws kuj yog siv nyob rau hauv raug architectural steelwork, qhov twg lub kaw seem muab ib tug huv si tsos thiab lub zog siab dua tso cai rau slender cov tswv cuab. Rau lub teeb-lub luag haujlwm thiab tus nqi- cov ntawv tsav tsheb, Qib A lossis B tseem yog qhov kev xaiv pheej yig.
Xaiv Cov Qib
Qib yog xaiv los ntawm tus tsim load thiab kev lag luam ntawm seem. Qib A (39 ksi tawm los) suits lub teeb loads thiab cov qauv ib ntus; Qib B (46 ksi) yog lub neej ntawd rau kev ua haujlwm dav dav; Qib C (50 ksi) yog siv thaum lub zog siab dua tso cai rau ntu - txo qhov loj me uas txuag tau cov hlau ntau dua li cov nqi hwm qib. Kev sib piv yuav tsum suav nrog qhov hnyav steel, tus nqi tsim khoom, thiab muaj qhov loj me hauv txhua qib.
Daim Ntawv Ceeb Toom ntawm Qis -Tub Yeeb Qib Qib
Hauv cov yeeb nkab specifications, qis -kub toughness yog ib qho cuab yeej cais los ntawm lub zog ntawm cov qauv. Piv txwv li, ASTM A333 Qib 6 yog cov pa roj carbon-manganese hlau rau kev pabcuam qis rau -50 F thiab tsis muaj cov nickel ntxiv, thaum A333 Qib 3 yog qib 3.5% nickel rau kev pabcuam txias dua. Cov lus piav qhia qib uas txuas cov ntsiab lus nickel rau A333 Qib 6 tsis raug; chemistry ntawm qib xaj yuav tsum tau txheeb xyuas ntawm daim ntawv pov thawj.
Cov lus nug nquag
Q: Lub zog tawm ntawm A500 Qib C yog dab tsi?
Qhov tsawg kawg nkaus lub zog yog 50,000 psi (345 MPa) thiab lub zog tensile yam tsawg kawg nkaus yog 62,000 psi (425 MPa).
Q: Qhov txawv ntawm Qib B thiab Qib C yog dab tsi?
Qib C muaj qhov siab tshaj qhov ua tau zoo tshaj plaws (50 ksi tiv thaiv 46 ksi) thiab lub zog tensile (62 ksi tiv thaiv 58 ksi), tso cai rau cov seem sib zog rau tib lub nra.
Q: A500 Qib C siv rau dab tsi?
Cov vaj tse, txuas hniav, cov khoom siv hnyav, cov qauv kev loj, thiab lwm yam kev siv cov txheej txheem uas muaj zog ntau dua yuav txo cov seem loj.
Q: Puas yog A500 Qib C welded lossis seamless?
Ob leeg raug them los ntawm tus qauv; cov khoom siv yog txias-tsim thiab hluav taws xob-kuj-welded, nrog seamless muaj nyob qhov twg yuav tsum tau.
Q: Qhov elongation ntawm Qib C yog dab tsi?
Qhov tsawg kawg nkaus elongation yog teem los ntawm phab ntsa thickness ib lub rooj A500; thinner phab ntsa xav tau ntau dua elongation.
Q: Puas yog A333 Qib 6 muaj 3.5% npib tsib xee?
No. A333 Qib 6 yog cov pa roj carbon-manganese hlau uas tsis tas yuav tsum tau nickel ntxiv, rau kev pabcuam qis rau -50 F. 3.5% nickel qib yog A333 Qib 3.
