Dab tsi X52 PSL2 Sib npaug rau
API 5L X52 thiab ISO 3183 L360 yog lub zog sib xws -qib npe. Tus naj npawb 52 yog hais txog qhov tsawg kawg nkaus tawm lub zog nyob rau hauv ntau txhiab phaus ib square inch, thiab 360 hais txog qhov tsawg kawg nkaus yield zog hauv megapascals. Ob lub npe piav qhia ib qib, thiab cov yeeb nkab uas tsim los rau ib daim ntawv yog feem ntau muab ob npaug rau.
Nyob rau hauv PSL2 qib nqa ib qho kev xa khoom- qhov xwm txheej tom qab uas sau tseg yuav ua li cas cov sawb, phaj lossis lub plhaub seamless tau tsim thiab kho cua sov. Rau X52 cov lus kawg hauv kev siv ib txwm yog M, N thiab Q, muab X52M, X52N thiab X52Q. Txhua lub ntsiab lus yog nws cov kev txwv chemistry, nws tus kheej elongation hauv paus thiab, qee zaum, nws tus kheej toughness xav tau, yog li kev hloov pauv yuav tsum phim cov lus kawg nrog rau tus lej muaj zog.
Table Equivalent Designation Table
| X52 PSL2 npe | ISO 3183 Kev tsim qauv | Kev xa khoom | Sib npaug European lub npe |
|---|---|---|---|
| X52R | L360R | Raws li - dov | L360MB hom muaj pes tsawg leeg, tsis yog - txoj kev qub |
| X52M | L360M | Thermomechanically dov | L360MB rau EN 10208-2 |
| X52N | L360N | Normalized los yog normalized dov | L360NB rau EN 10208-2 |
| X52Q | L360Q | Quenched thiab tempered | Ordered rau qhov project specification |
Cov neeg tsim khoom hauv Suav teb hais tib qib raws li GB / T 9711 li L360, thiab cov cim feem ntau qhia API 5L X52, ISO 3183 L360 thiab GB / T 9711 L360 ua ke.
Mechanical and Chemical Checks Ua ntej hloov
Txhua qhov sib txawv ntawm X52 PSL2 yuav tsum ua kom tau raws li qhov tsawg kawg nkaus lub zog ntawm 360 MPa, lub zog tensile yam tsawg kawg nkaus ntawm 460 MPa thiab cov khoom tawm los ntawm - rau -tensile piv uas PSL2 lub kaus mom kom cov yeeb nkab khaws cov ductility. PSL2 kuj tau teeb tsa lub zog siab tshaj qhov txwv tsis pub dhau qhov tsawg kawg nkaus, uas yog ib qho ntawm qhov sib txawv tseem ceeb ntawm PSL1.
| Khoom | X52 PSL2 xav tau |
|---|---|
| Yam tsawg kawg yield zog | 360 MPa siab |
| Tsawg kawg tensile zog | 460 MPa rau |
| Cov pa roj carbon, R, N thiab M | 0.24% max seamless, 0.22% max welded |
| Cov pa roj carbon, Q condition | 0.18% max |
| Manganese | 1.40% max, 1.60% max hauv Q mob |
| Phosphorus | 0.025% max |
| Sulfur | 0.015% max |
| Carbon sib npaug | Tswj rau qib ntau, feem ntau CE (IIW) 0.43 max thiab Pcm 0.25 max rau phab ntsa tuab txog 25 hli |
| Hardness | 250 HV10, 250 HBW lossis 22 HRC siab tshaj plaws |
Ob lub ntsiab lus txiav txim siab cov lus nug hloov pauv. Ua ntej, qhov sib npaug ntawm cov pa roj carbon monoxide tswj kev sib txuas: cov khoom siv L360 uas ua rau lub zog tawm los tab sis nqa cov pa roj carbon ntau dua li X52 PSL2 txwv tsis tuaj yeem welded nrog tib txoj kev tsim nyog. Qhov thib ob, Charpy V- qhov ntsuas qhov cuam tshuam yog qhov yuav tsum tau ua raws li PSL2, thiab qhov ntsuas kub thiab qhov nqus nqus tsawg kawg yog pom zoo rau qhov project. Lub cev L360N cov yeeb nkab thiab cov thermomechanically dov L360M yeeb nkab tuaj yeem ncav cuag qib zog thaum coj txawv txawv hauv qhov sib txawv, kev khoov thiab vuam.
Qhov twg qhov sib npaug tawg
PSL1 L360 yeeb nkab tsis yog ib qho kev hloov pauv tsis siv neeg rau X52 PSL2 vim qhov kev sim cuam tshuam, kev tswj cov pa roj carbon sib npaug thiab qhov txwv tsis pub tshaj tawm.
Cov yeeb nkab uas tsim los rau lub siab- lub nkoj lossis cov qauv txheej txheem nrog lub zog zoo sib xws tsis nqa cov kab yeeb nkab qhov ntev, kev ntsuas hydrostatic lossis cov qauv lees paub tsis raug.
Txhua qhov kev xav tau kev pabcuam qaub ntxiv cov kev txwv hardness, chemistry txwv thiab tshwj xeeb cuam tshuam lub zog qhov tseem ceeb uas yuav tsum tau muab cais tawm.
Offshore thiab arctic tej yaam num ib txwm yuav tsum muaj qhov ntsuas qhov ntsuas kub qis dua li tus qauv hauv qab daus tus nqi, uas hloov txoj kev steelmaking.
Yuav ua li cas thiaj txiav txim tau qhov tseeb hloov
Qhia tag nrho cov npe es tsis yog qib luv luv: API 5L X52M PSL2, sab nraud txoj kab uas hla, phab ntsa thickness, ntev ntau yam, kawg tiav, txheej, cuam tshuam ntsuas kub, absorbed zog thiab cov cim yuav tsum tau. Nug rau daim ntawv pov thawj zeb los qhia cov naj npawb cua sov, chemistry, carbon sib npaug, cov txiaj ntsig tensile, cov txiaj ntsig cuam tshuam thiab kev kho cua sov. Thaum cov yeeb nkab yog npaj rau lub raj xa dej uas twb muaj lawm, thov kev tsim nyog txheej txheem weld thiab, yog tias muaj kev pabcuam qaub, kev sojntsuam tawv tawv hla qhov vuam thiab cua sov- thaj tsam cuam tshuam.
FAQ
Q: Puas yog L360 zoo ib yam li X52?
Yog lawm. L360 yog ISO 3183 tsim thiab X52 yog API 5L tsim rau qhov tsawg kawg nkaus yield zog ntawm 360 MPa, thiab cov yeeb nkab feem ntau yog dual cim nrog ob lub npe.
Q: Qhov txawv ntawm L360M thiab L360N yog dab tsi?
L360M yog thermomechanically dov thiab L360N yog normalized lossis normalized dov. Ob leeg mus txog qib tib lub zog, tab sis tus mob M cia siab rau kev tswj rolling thaum N tus mob tso siab rau kev kho cua sov, uas cuam tshuam rau qhov hnyav thiab qhov kev sib tw vuam.
Q: Puas tuaj yeem siv L360 PSL1 hloov X52 PSL2?
Tsuas yog tias qhov project lees txais PSL1. PSL1 yeeb nkab tsis muaj qhov yuav tsum tau kuaj xyuas, tswj cov pa roj carbon sib npaug lossis qhov kev txwv lub zog siab, yog li nws tsis tuaj yeem ua raws li PSL2 specification.
Q: Cov txheej txheem European twg npog cov kab sib npaug?
TS EN 10208-2 npog cov raj xa dej rau cov kua hluav taws xob thiab siv cov npe L360MB rau cov ntaub ntawv thermomechanically dov thiab L360NB rau cov ntaub ntawv zoo li qub.
Q: Puas yog qib sib npaug ib txwm muaj qhov cuam tshuam zoo tib yam?
Tsis yog. Toughness nyob ntawm chemistry, huv si steel xyaum, dov lub sij hawm thiab kev kho cua sov. Ob lub kav dej ntawm tib qib zog tuaj yeem pom qhov sib txawv ntawm Charpy, yog li qhov ntsuas kub thiab lub zog yuav tsum tau teev thiab txheeb xyuas ntawm daim ntawv pov thawj zeb.
Q: Dab tsi yuav tsum tshwm sim ntawm cov yeeb nkab cim?
Tus qauv, qib thiab tus me nyuam tus mob, cov khoom specification theem, sab nraud txoj kab uas hla thiab phab ntsa thickness, lub tshav kub tooj thiab cov chaw tsim tshuaj paus cim. Dual marking nrog API 5L X52 thiab ISO 3183 L360 yog qhov qub.
