Txheej txheem cej luam ntawm ASTM A671 CJP115 Class 32 Pipe
ASTM A671/A671M yog cov lus qhia tshwj xeeb rau hluav taws xob -fusion-welded steel yeeb nkab ua los ntawm siab- nkoj- zoo phaj, npaj rau siab - kev pabcuam siab ntawm atmospheric thiab qis dua. Cov yeeb nkab yog tsim los ntawm phaj thiab welded nrog ob -sided submerged arc weld, ces kub kho thiab tshuaj xyuas raws li cov chav kawm. Nws yog tsim nyob rau hauv loj diameters, feem ntau 16 nyob rau hauv, txog 406 hli, thiab loj dua.
Lub npe CJP115 Chav Kawm 32 muaj ob qhov kev ywj pheej. CJP115 npe cov khoom siv phaj thiab nws qib zog: cov yeeb nkab yog tsim los ntawm A517 / A517M Qib P phaj, siab -lub zog alloy steel, quenched thiab tempered. Chav kawm 32 teev npe cov kev kho cua sov thiab kev kuaj xyuas uas yuav tsum tau siv rau cov yeeb nkab tiav. Txhua ntu tau piav qhia hauv qab no.
Qib txhais li cas
Nyob rau hauv lub npe A671 ob - tsab ntawv prefix qhia txog lub siab- lub nkoj phaj specification los ntawm cov yeeb nkab tau tsim, thiab tus lej hais txog qhov tsawg kawg nkaus tensile lub zog hauv ksi. Qib CJP115 yog li ntawd txhais tau hais tias cov yeeb nkab ua los ntawm A517 / A517M Qib P, nrog lub zog tensile yam tsawg kawg nkaus ntawm 115 ksi, txog 790 MPa.
| Qib | Phaj specification | Hom hlau | Tsawg kawg tensile zog |
|---|---|---|---|
| CJP 115 | A517/A517M Qib P | siab -lub zog alloy steel, quenched thiab tempered | 115 ksi, txog 790 MPa |
CJP115 yog tsim los ntawm A517 Qib P, chromium-molybdenum-vanadium-boron alloy steel nkag rau hauv qhov kub thiab txias. Lub phaj tensile ntau yog 115 mus rau 135 ksi, thiab cov ntawv CJP yog cov khoom siv qeb code taw qhia rau A517 Qib P phaj, tsis yog lub sij hawm vuam ua tiav kev sib koom ua ke.
Nyob rau hauv cov nqe lus ntawm lub zog, qhov tsawg kawg nkaus yield zog yog 100 ksi, txog 690 MPa, rau phaj thicknesses txog 2.5 nyob rau hauv..
Yuav ua li cas A671 Class System ua haujlwm
Cov chav kawm yog ob - tus lej code. Thawj tus lej xaiv cov cua sov- tsev neeg kho mob siv rau cov yeeb nkab tom qab vuam.
| Chav tsev neeg | Kev kho cua sov siv rau cov yeeb nkab |
|---|---|
| 10 rau 13 | Tsis muaj; xa raws li welded |
| 20 rau 23 | Kev ntxhov siab tau txo qis tom qab vuam |
| 30 rau 33 | Li qub |
| 40 rau 43 | Normalized thiab tempered |
| 50 rau 53 | Quenched thiab tempered |
| 70 rau 73 | Quenched thiab nag lossis daus kub kho |
Tus lej thib ob xaiv qib kev xeem.
| Tus lej kawg | Radiography ntawm vuam | Kev ntsuas siab |
|---|---|---|
| 0 | Tsis xav tau | Tsis xav tau |
| 1 | Tag nrho - ntev radiography ntawm txhua qhov weld ib ASME VIII UW-51 | Tsis xav tau |
| 2 | Tag nrho - ntev radiography ntawm txhua qhov weld ib ASME VIII UW-51 | Yuav tsum muaj rau A530 / A530M |
| 3 | Tsis xav tau | Yuav tsum muaj rau A530 / A530M |
Chav Kawm 32 txhais li cas rau cov yeeb nkab no
Chav kawm 32 muaj ob tus lej. Thawj tus lej 3 xaiv cov cua sov- tsev neeg kho, uas txhais tau hais tias cov yeeb nkab zoo li qub tom qab vuam. Tus lej thib ob 2 xaiv qib kev xeem, uas txhais tau hais tias txhua qhov kev sib txuas ntev yuav tsum tau ua tiav cov duab hluav taws xob raws li ASME Tshooj VIII, UW-51, thiab yuav tsum muaj kev ntsuas hydrostatic siab raws li A530 / A530M.
Ua ke, Chav Kawm 32 yeeb nkab yog cov yeeb nkab zoo li qub tom qab vuam, thiab txhua qhov txuas txuas ntev yuav tsum tau ua tiav cov duab hluav taws xob raws li ASME Tshooj VIII, UW-51, thiab yuav tsum muaj kev ntsuas hydrostatic siab raws li A530 / A530M. Cov kev cai no raug kho thaum lub sijhawm txiav txim, sau rau ntawm cov ntaub ntawv xaj thiab lees paub ntawm daim ntawv pov thawj zeb xeem.
A517 phaj yog nws tus kheej quenched thiab tempered, yog li cov chav kawm normalized 30 mus rau 33 yog txawv txawv rau cov khoom no; cov chav kawm quenched thiab tempered 50 txog 53 yog qhov haum haum, thiab kev kho cua sov yuav tsum tau lees paub nrog tus engineer ua ntej xaj.
Tej kev siv
CJP115 yeeb nkab yog siv nyob rau hauv qhov muaj zog heev yuav tsum tau ua ke nrog toughness: hnyav-phab ntsa siab- siab piping, siab hlab ntsha, offshore structures thiab qis- kub qhov kev pab cuam qhov twg ib tug quenched thiab tempered alloy yog teev.
Kev tsim khoom, kuaj thiab cov ntaub ntawv
A671 yeeb nkab pib raws li siab- nkoj- phaj zoo muab raws li tus qauv siv tau. Lub phaj yog tsim rau hauv ib lub tog raj kheej thiab cov seam ntev yog welded los ntawm cov txheej txheem submerged arc los ntawm ob sab hauv thiab sab nraud, ua rau tag nrho - nkag mus rau weld. Tom qab vuam, cov yeeb nkab tau txais kev kho cua sov ntawm cov chav kawm uas tau xaiv thiab tom qab ntawd cov kev ntsuam xyuas thiab kev ntsuam xyuas yuav tsum tau ua los ntawm cov chav kawm thiab los ntawm A671 / A671M.
Kev ntsuam xyuas ib txwm muaj xws li tshuaj ntsuam xyuas ntawm cov cua sov, ntsuas tensile, thiab cov kev ntsuas hluav taws xob thiab kev ntsuas hydrostatic siab xav tau los ntawm chav kawm. Charpy V- qhov ntsuas qhov cuam tshuam tau ua tiav thaum tus qauv tsim lossis xaj xaj xaj yuav tsum tau, thiab lub phaj yuav raug kuaj ultrasonically raws li A435 lossis qhov yuav tsum tau ua ntxiv. Txhua cov yeeb nkab yog traceable rau nws phaj kub tooj, thiab daim ntawv pov thawj zeb xeem cov ntaub ntawv pov thawj tshuaj ntsuam xyuas, mechanical test results, heat treatment details and exam results.
Qhov muaj nyob sab nraud diameters, phab ntsa thicknesses thiab ntev nyob ntawm lub phaj dav thiab txoj kev tsim thiab vuam muaj peev xwm ntawm lub tshuab tsim, yog li qhov yuav tsum tau OD, phab ntsa, ntev thiab qhov kawg tiav yuav tsum tau lees paub nrog tus neeg muag khoom ua ntej xaj.
FAQ
Q1. Qib CJP115 txhais li cas hauv A671 kev xaiv?
Ob - tsab ntawv ua ntej txheeb xyuas cov phaj tshwj xeeb, thiab tus lej hais txog lub zog tensile yam tsawg kawg nkaus hauv ksi. CJP115 txhais tau hais tias cov yeeb nkab ua los ntawm A517 / A517M Qib P phaj, lub siab - lub zog alloy steel, quenched thiab tempered, nrog lub zog tensile yam tsawg kawg nkaus ntawm 115 ksi, txog 790 MPa.
Q2. Class 32 txhais li cas?
Chav kawm 32 tau nyeem ua ob tus lej: thawj tus lej xaiv qhov cua sov- tsev neeg kho mob, cov yeeb nkab tau zoo li qub tom qab vuam, thiab tus lej thib ob xaiv cov qib kev xeem, uas txhais tau hais tias txhua qhov kev sib txuas ntev yuav tsum tau ua tiav cov duab hluav taws xob raws li ASME Tshooj VIII, UW-51, thiab yuav tsum muaj kev ntsuas hydrostatic siab raws li A53MA.
Q3. Dab tsi yog qhov tsawg kawg nkaus tensile lub zog ntawm CJP115 yeeb nkab?
115 ksi, txog 790 MPa. Tus lej hauv qib npe qhia tus nqi ncaj qha; nws yog tus nqi tensile, tsis yog tus nqi tawm los. Qhov tsawg kawg nkaus tawm lub zog yog 100 ksi, txog 690 MPa, rau phaj thicknesses txog 2.5 nyob rau hauv.
Q4. Puas yog Chav Kawm 32 txhais tau qhov kev pabcuam kub?
Tsis yog. Ib chav kawm qhia txog kev kho cua sov thiab kev kuaj xyuas nkaus xwb, tsis txhob ntsuas qhov kub thiab txias. Qhov kev nyab xeeb kev khiav hauj lwm kub yog teem los ntawm cov khoom siv phaj, qhov kev ntsuam xyuas qhov yuav tsum tau ua thiab kev tswj xyuas cov cai; rau qib CJP115, cov tsev neeg hlau thiab nws qhov tsim nyog toughness txiav txim siab qhov qis - qhov ntsuas kub.
Q5. Yuav ua li cas kev ntsuam xyuas ntawm A671 yeeb nkab?
Txhua lub tshav kub raug txheeb xyuas los ntawm kev tshuaj xyuas tshuaj thiab kev ntsuas tensile. Cov chav kawm txiav txim siab seb puas muaj tag nrho - ntev radiography ntawm longitudinal weld thiab yuav tsum tau kuaj hydrostatic siab. Charpy cuam tshuam kev kuaj, kuaj ultrasonic ntawm lub phaj thiab lwm yam kev ntsuam xyuas ntxiv ntxiv thaum tus qauv tsim los yog daim ntawv xaj xaj qhia lawv, thiab tag nrho cov txiaj ntsig tau tshaj tawm ntawm daim ntawv pov thawj zeb xeem.
Q6. A671 yeeb nkab tsim thiab qhov ntau thiab tsawg?
A671 yeeb nkab yog tsim los ntawm siab- nkoj- phaj zoo thiab welded nrog ob - sab submerged arc weld, tom qab ntawd kho cua sov thiab tshuaj xyuas ib chav kawm. Nws yog tsim nyob rau hauv sab nraud diameters ntawm 16 nyob rau hauv, hais txog 406 hli, thiab loj, nrog rau phab ntsa thicknesses xaiv rau tus tsim siab thiab ntev feem ntau muab nyob rau hauv ib los yog ob chav random. Muaj tseeb nyob ntawm lub tshuab ua khoom thiab yuav tsum tau lees paub ua ntej xaj.
