Nkag siab lub npe
Lub npe API 5L X60 PSL2 muab peb daim ntaub ntawv. API 5L yog cov lus qhia tshwj xeeb tshaj tawm los ntawm American Petroleum Institute rau seamless thiab welded steel yeeb nkab siv hauv cov kav dej thauj mus los hauv kev lag luam roj av thiab cov nkev. X60 yog qib, qhov twg X prefix qhia txog kab yeeb nkab steel thiab tus lej muab qhov tsawg kawg nkaus tawm lub zog nyob rau hauv txhiab psi, yog li X60 sib raug rau 60,000 psi, lossis 414 MPa, thiab rau qib L415 hauv kev ntsuas metric. PSL2 yog qhov thib ob ntawm ob yam khoom tshwj xeeb uas tau teev tseg los ntawm cov lus qhia tshwj xeeb, thiab nws yog qib uas ua rau cov yeeb nkab haum rau qhov tseem ceeb, kev kub siab lossis qhov kub thiab txias.
Mechanical Properties ntawm X60
Cov kev xav tau ntawm lub zog tau hais tias yog ib pawg es tsis yog ib daim duab, vim tias ob qho tib si hauv qab - lub zog thiab ntau dhau - lub zog ua rau muaj teeb meem hauv cov kav dej.
| Khoom | X60 PSL2 xav tau | Tswv yim lub ntsiab |
|---|---|---|
| Yield zog | 414 MPa yam tsawg kawg nkaus, 565 MPa siab tshaj | Tsim lub hauv paus rau phab ntsa thickness xam |
| Tensile zog | 517 MPa yam tsawg kawg nkaus, 758 MPa siab tshaj | Qhov kawg peev xwm ntawm kab |
| Yield rau tensile ratio | Txwv raws li tus qauv | Khaws lub peev xwm strain thaum lub zog hauv av |
| Elongation | Formula raws li qhov ntsuas qhov chaw thiab lub zog tensile | Pom zoo ductility ntawm cov yeeb nkab tiav |
| Impact toughness | Charpy V-ntaus ntawv xeem yuav tsum tau | Resistant brittle fracture pib thiab propagation |
Vim tias lub zog muaj zog nce nrog kev ua haujlwm txias thiab poob nrog cov phab ntsa thickness variation, mills tswj lub sij hawm dov thiab cov kauj ruam nthuav kom zoo, thiab qhov kev xeem zaus txiav txim siab npaum li cas cov yeeb nkab xa khoom sib tw nrog cov ntawv pov thawj.
Dab tsi PSL2 Ntxiv
PSL2 yog txhais los ntawm kev tswj hwm ntxiv es tsis yog los ntawm qib sib txawv. Phosphorus raug txwv rau 0.025 feem pua thiab sulfur rau 0.015 feem pua, ob qho tib si hauv qab PSL1 txwv, uas txhim kho cov tawv nqaij thiab txo qhov kev pheej hmoo ntawm hydrogen induced cracking. Cov ntsiab lus ua ke ntawm niobium, vanadium thiab titanium raug txwv rau 0.15 feem pua kom muaj zog los ntawm kev tswj hwm micro-alloying es tsis yog los nag lossis daus. Qhov siab tshaj plaws carbon sib npaug yog tsim, suav los ntawm cov pa roj carbon sib npaug ua ntej- cov khoom siv mis lossis los ntawm cov qauv zoo sib xws, kom cov hlau tuaj yeem welded nyob rau hauv lub tshav pob yam tsis tsim ib qho nyuaj, brittle microstructures nyob rau hauv lub tshav kub cuam tshuam cheeb tsam. Kev ntsuam xyuas kev cuam tshuam yog qhov yuav tsum tau ua ntau dua li kev xaiv, thiab lub vuam seam ntawm cov yeeb nkab welded yog tshuaj xyuas nws qhov ntev tag nrho los ntawm txoj kev tsis muaj kev puas tsuaj.
Kev tshuaj xyuas thiab kuaj
Tag nrho ntev ultrasonic los yog electromagnetic kev soj ntsuam ntawm seamless yeeb nkab, thiab tag nrho ntev ultrasonic kuaj ntawm weld seam thiab tshav kub cuam tshuam cheeb tsam ntawm welded yeeb nkab.
Charpy V-kev ntsuas qhov cuam tshuam rau ntawm cov yeeb nkab lub cev, cov hlau vuam thiab cov cua sov ua rau thaj tsam, ntawm qhov kub thiab txias tau pom zoo rau qhov project.
Kev ntsuam xyuas hydrostatic ntawm txhua qhov ntev mus rau lub siab xav tau los ntawm kev qhia tshwj xeeb thiab kev yuav khoom.
Tensile xeem ntawm qhov zaus yuav tsum tau los ntawm qib, nrog puag ncig bar lossis flattened pluaj qauv rau welded yeeb nkab.
Dimensional pov thawj ntawm txoj kab uas hla, phab ntsa thickness, ovality, straightness thiab kawg squareness ua ntej despatch.
Cov ntawv thov thiab xaiv
X60 PSL2 yog siv rau cov roj kub siab thiab cov roj xa hluav taws xob, cov kab khiav tawm sab nraud thiab cov kab xa tawm, kev hla dej, thiab cov kav dej xa mus los ntawm cov av tsis ruaj tsis khov lossis seismic qhov twg muaj peev xwm yuav tsum tau ua kom pom. Nws kuj tseem raug xaiv rau cov pa roj carbon dioxide thiab cov kev pabcuam qaub me me uas qhov kev huv huv thiab kev tswj nruj yog qhov tseem ceeb. Cov qib yog tsim raws li seamless yeeb nkab rau me me diameters thiab raws li longitudinally los yog kauv welded yeeb nkab rau loj diameters, thiab txoj kev tsim tau teev nyob rau hauv qhov kev txiav txim vim hais tias nws muaj feem xyuam rau lub permissible txoj kab uas hla, phab ntsa thickness thiab toughness ua ke.
FAQ
Q: Qhov tsawg kawg nkaus tawm lub zog ntawm X60 PSL2 yog dab tsi?
414 MPa, sib npaug rau 60,000 psi. Qhov siab tshaj plaws tso cai tawm lub zog nyob rau hauv PSL2 yog 565 MPa, yog li cov qib tau muab nyob rau hauv ib pawg uas tau hais tseg es tsis yog ntawm ib tus nqi.
Q: Vim li cas PSL2 txwv cov pa roj carbon sib npaug?
Cov pa roj carbon sib npaug qhia tau yooj yim npaum li cas cov hlau ua cov theem nyuaj thaum nws txias sai sai tom qab vuam. Kev txwv nws ua rau cov cua sov cuam tshuam rau thaj tsam mos thiab tawv, yog li thaj chaw girth welds tuaj yeem ua yam tsis muaj preheat nyob rau hauv feem ntau cov mob thiab tsis muaj kev pheej hmoo ncua kev tawg.
Q: Puas yog X60 PSL2 ib txwm raug kuaj?
Yog lawm. Kev ntsuam xyuas cuam tshuam yog qhov yuav tsum tau ua ntawm qib thib ob cov khoom tshwj xeeb, thiab cov kev ntsuam xyuas raug coj los ntawm cov yeeb nkab lub cev thiab, rau cov yeeb nkab welded, los ntawm cov vuam hlau thiab cov cua sov hauv cheeb tsam ntawm qhov pom zoo ntsuas kub.
Q: X60 PSL2 puas tuaj yeem muab seamless thiab welded?
Ob txoj kev yog them los ntawm cov specification. Seamless yeeb nkab yog ib txwm rau me me diameters thiab siab dua, thaum longitudinal los yog kauv submerged arc welded yeeb nkab npog cov kab loj loj, thiab txoj kev tau teev tseg ntawm kev yuav khoom.
Q: Qhov txawv ntawm X60 PSL1 thiab X60 PSL2 yog dab tsi?
PSL1 muab lub hauv paus muaj pes tsawg leeg, cov khoom thiab kev tshuaj xyuas kev tswj hwm. PSL2 ntxiv cov kev txwv nruj dua phosphorus thiab sulfur, qhov sib npaug ntawm cov pa roj carbon monoxide, lub hau npog ntawm cov ntsiab lus niobium, vanadium thiab titanium, yuav tsum tau kuaj xyuas thiab tag nrho qhov ntev uas tsis muaj kev puas tsuaj ntawm vuam seam.
Q: Cov ntaub ntawv twg nrog X60 PSL2 xa khoom?
Mill daim ntawv pov thawj qhia txog kev ntsuas cua sov, kev tshuaj xyuas cov khoom, tensile thiab cuam tshuam cov txiaj ntsig, cov ntaub ntawv kuaj hydrostatic thiab cov txiaj ntsig ntawm kev kuaj xyuas tsis muaj kev puas tsuaj, ua ke nrog cov ntaub ntawv ntsuas qhov ntev thiab cov cim uas txheeb xyuas qhov tshwj xeeb, qib, qhov loj, tus naj npawb ntawm cov khoom siv hluav taws xob thiab cov khoom tshwj xeeb.
