ASTM A252 Qib 3 yog dab tsi?
ASTM A252 npog welded thiab seamless steel yeeb nkab pawg rau kev tsim kho hauv paus. Qib 3 yog qhov muaj zog tshaj plaws ntawm peb qib nyob rau hauv tus qauv, xa tawm qhov tsawg kawg nkaus lub zog ntawm 310 MPa thiab lub zog tensile yam tsawg kawg nkaus ntawm 455 MPa, kwv yees li 51 feem pua siab dua li qib 1.
Qib 3 tau teev tseg tias qhov kev tsav tsheb loj heev, cov khoom hnyav hnyav lossis cov qauv yuav tsum tiv thaiv lub zog sab nraud xws li cua, nthwv dej lossis av qeeg.
Mechanical Properties
| Khoom | Qib 3 Yuav tsum muaj |
|---|---|
| Yield zog, min | 310 MPa (45,000 psi) |
| Tensile zog, min | 455 MPa (66,000 psi) |
| Elongation, min | 20% hauv 2 nti |
| Cov pa roj carbon ntau, max | 0.29% |
Lub zog siab dua tso cai rau cov kab me me los yog cov phab ntsa nyias nyias rau tib qho kev tsim qauv, txo cov nqi khoom thiab kev siv zog rau kev ua haujlwm hnyav.
ERW Manufacturing ntawm Qib 3 Piles
Hluav taws xob kuj welding tsim cov pawg los ntawm steel kauj, nrog cov seam welded los ntawm siab - zaus tam sim no thiab tom qab ntawd kho cua sov los kho qhov chaw weld. ERW yog cov txheej txheem ua tau zoo rau cov yeeb nkab piles txog li 24 ntiv tes hauv txoj kab uas hla, muab qhov zoo sib xws thiab qhov zoo ntawm qhov chaw. Cov kab loj dua yog tsim los ntawm submerged arc vuam los ntawm phaj.
Kev xeem yuav tsum tau
Qib 3 pawg raug kuaj xyuas cov khoom tensile, flattening, dabtsi yog khoov thiab hydrostatic kev ncaj ncees. Tsis zoo li Qib 1 thiab 2, Charpy qhov kev ntsuam xyuas qhov cuam tshuam yog qhov yuav tsum tau ua rau Qib 3 hauv qee qhov qauv ntawm cov qauv vim tias qhov siab dua - steel zog yog siv rau hauv qhov xav tau ntau dua thiab muaj peev xwm txias dua. Weld seam raug tshuaj xyuas los ntawm tsis yog - txoj kev puas tsuaj uas tau teev tseg.
Daim ntawv thov
Qib 3 pawg yog siv nyob rau hauv lub hauv paus loj choj, offshore platforms, sib sib zog nqus-dej jetties, hnyav industrial nroj tsuag, siab -nce vaj tse nyob rau hauv seismic zones thiab txhua lub hauv paus uas muaj peev xwm load siab tshaj plaws rau ib pawg. Lawv kuj raug xaiv rau pawg uas tau tsav los ntawm cov txheej tuab los yog tawv.
FAQ
Q1. Lub zog tawm los ntawm A252 Gr . 3 yog dab tsi?
Qhov tsawg kawg nkaus tawm lub zog yog 310 MPa, sib npaug rau 45,000 psi, qhov siab tshaj plaws ntawm peb qib A252.
Q2. Qhov txawv ntawm Qib 2 thiab Qib 3 yog dab tsi?
Qib 3 muab kwv yees li 7 feem pua yuav muaj zog ntau dua li Qib 2 tab sis tau teev tseg rau cov khoom hnyav dua thiab cov mob hnyav dua, thiab nws yog qhov yuav tsum tau kuaj xyuas hauv cov ntawv tam sim no.
Q3. Qib 3 pawg puas tuaj yeem tsim los ntawm ERW?
Yog lawm, ERW yog txheej txheem txheej txheem rau Qib 3 pawg hauv qhov me me thiab nruab nrab txoj kab uas hla, nrog cov kab loj dua uas ua los ntawm submerged arc vuam.
Q4. Vim li cas thiaj li yuav tsum muaj kev ntsuam xyuas rau Qib 3?
Vim tias Qib 3 pawg ua haujlwm hnyav, cov qauv tseem ceeb thiab tuaj yeem raug tsav hauv cov xwm txheej txias, qhov kev ntsuam xyuas cuam tshuam los ntawm kev ua kom tawv tawv tiv thaiv kev tawg thaum tsav tsheb thiab kev pabcuam.
Q5. Dab tsi yog qhov siab tshaj plaws ntawm ERW yeeb nkab pawg?
ERW pawg feem ntau yog tsim tawm txog li 24 ntiv tes sab nraud, dhau ntawm cov txheej txheem SAW los ntawm phaj siv.
Q6. Thaum twg yuav tsum xaiv Qib 3 tshaj Qib 2?
Rau cov choj hnyav thiab cov hauv paus ntug dej hiav txwv, thaj tsam seismic, kev tsav tsheb nyuaj thiab cov haujlwm uas tsawg dua, cov pawg muaj zog txo tag nrho cov nqi.
