Vim li cas API 5L Qib Nqa Cov Ntawv Sau Npe
API 5L txhais cov kab yeeb nkab qib los ntawm qhov tsawg kawg nkaus lub zog, tab sis ib qib xws li X52 tuaj yeem tsim los ntawm ob peb txoj kev metallurgical thiab xa mus rau ob qib sib txawv. Cov ntawv tom qab tau qhia kom tag nrho cov kev xav tau tuaj yeem sau rau hauv ib qho luv luv thiab muab luam tawm ntawm daim ntawv pov thawj zeb, cov yeeb nkab kos npe thiab daim ntawv xaj tsis muaj qhov tsis meej.
Kev nyeem cov lus txuas ntxiv kom raug tiv thaiv ob qho kev ua yuam kev: xaj PSL1 yeeb nkab qhov twg PSL2 nrog kev sim cuam tshuam tau npaj, thiab xaj raws li - cov yeeb nkab dov qhov twg tus qauv tsim tau xav tias yog qhov qub lossis thermo- cov khoom siv tshuab dov.
Product Specification Level Related Suffixes
Cov tsiaj ntawv PSL sawv cev rau qib khoom tshwj xeeb. Cov qib yuav tshwm sim raws li ib qho kev tsim nyog sib cais (PSL1 lossis PSL2) los yog siv rau hauv cov lus piav qhia, thiab nws hloov chemistry, kuaj thiab tshuaj xyuas siv zog tab sis tsis yog qhov tsawg kawg nkaus yield zog ntawm qib.
PSL1sawv cev rau theem pib: chemistry thiab tensile yuav tsum muaj kev txwv tsawg dua thiab tsis tas yuav muaj kev ntsuam xyuas raws li niaj hnub.
PSL2yog qib siab dua: cov pa roj carbon, phosphorus thiab sulfur txwv nruj dua, Charpy V- qhov ntsuas qhov cuam tshuam yog qhov yuav tsum tau ua, thiab txhua cov yeeb nkab yuav tsum tsis yog - kev kuaj xyuas kev puas tsuaj nrog cov txheej txheem lees paub.
Cov ntawv xa tuaj
Cov ntawv hauv qab no piav qhia txog lub xeev metallurgical ntawm cov yeeb nkab xa. Lawv raug sau ncaj qha tom qab qib, xws li hauv X52N lossis X52M.
| Lub npe | Txhais | Hom kev siv |
| X52R | Raws li - dov | General low -siab kis tau tus mob thiab lub luag hauj lwm yam ntxwv |
| X52N | Normalized, los yog normalized tsim thiab dov | Predictable toughness, siab kub pab |
| X52 NR | Normalized dov | Txhim kho toughness yam tsis muaj kev sib cais normalizing voj voog |
| X52M | Thermo-mechanically dov los yog tsim | High toughness nrog qis carbon sib npaug |
| X52 TMCP | Thermo- txheej txheem tswj kev siv tshuab | Loj txoj kab uas hla, kev kub siab kis kab mob |
| X52Q | Quenched | Kev siv zog tsav, tom qab tempering raug |
| X52 CR | Tswj dov | Grain refinement rau toughness |
| X52 ACC | Ua kom txias txias | Fine grain microstructure tom qab dov |
| X52 SR | Kev ntxhov siab -relief annealing | Txo cov kev ntxhov siab seem tom qab sib sau los yog vuam |
| X52T | Tempered | Restores ductility tom qab quenching |
| X52A | Annealed | Softest mob, siab kawg formability |
Sour Service thiab Corrosion Related Suffixes
Thaum cov yeeb nkab yog npaj rau cov kev pabcuam ntub dej hydrogen sulphide, lub npe yuav txuas ntxiv nrog cov ntawv xws li NS, QS lossis MS. Cov no qhia tau hais tias cov hlau tau raug tsim los tiv thaiv sulphide kev nyuaj siab corrosion cracking thiab hydrogen induced cracking, feem ntau los ntawm tsawg leej faj thiab phosphorus cov ntsiab lus, cov duab tswj ntawm inclusions thiab, qhov twg yuav tsum tau, calcium kev kho mob rau inclusion hloov.
Sour kev pab tsim yog ib txwm ua ke nrog PSL2 thiab nrog rau cov kev txwv ntawm hardness thiab nyob rau hauv lub siab tshaj plaws yield zog, vim hais tias muaj zog ntau ntau nce cracking susceptibility. Kev txiav txim rau lub luag haujlwm qaub yuav tsum tau hais txog qhov kev pabcuam kom meej meej kom lub zeb siv txoj hauv kev zoo steelmaking thiab kev sim.
Qhov twg Qhov Suffix tshwm sim thiab yuav ua li cas txheeb xyuas nws
Daim ntawv qhia tag nrho yog luam tawm ntawm cov yeeb nkab lub cev stencil lossis ntawm daim ntawv hloov pauv rau cov kab me me.
Daim ntawv pov thawj zeb rov ua cov qib, cov lus xaus, cov xov tooj cua sov thiab cov khoom lag luam specification.
Daim ntawv xaj yuav tsum siv tib lub npe tag nrho, suav nrog cov qauv qauv.
Dimension thiab xeem yuav tsum tau rau qhov kev xaiv tus me nyuam yuav tsum tau soj ntsuam raws li API 5L rooj ua ntej tso.
FAQ
Q: Puas yog tsab ntawv txuas ntxiv hloov lub zog ntawm X52?
Tsis yog. Yam tsawg kawg nkaus lub zog tseem tshuav 359 MPa thiab lub zog tensile yam tsawg kawg nkaus tseem tshuav 455 MPa rau X52, tab sis cov khoom xa tuaj hloov toughness, grain loj thiab cov pa sib npaug, uas cuam tshuam rau thaj chaw weldability.
Q: Qhov txawv ntawm X52N thiab X52M yog dab tsi?
X52N yog normalized los yog normalized dov, muab ib tug ferrite -pearlite qauv; X52M yog cov thermo- tshuab dov, muab cov qoob loo zoo dua, zoo dua toughness thiab qis carbon sib npaug rau tib lub zog.
Q: PSL1 yeeb nkab puas tuaj yeem nqa cov khoom xa tuaj?
Yog lawm. Qhov kev xa khoom yog cais los ntawm qib tshwj xeeb, txawm hais tias qee qhov kev sib txuas, tshwj xeeb yog kev pabcuam qaub, tsuas yog muab ntawm PSL2.
Q: NS txhais li cas ntawm daim ntawv pov thawj X52 yeeb nkab?
NS cim cov yeeb nkab uas tsim los rau cov kev pabcuam qaub, uas ua rau muaj cov sulfur tsawg thiab kev huv huv kom tiv thaiv kev nyuaj siab sulphide corrosion cracking nyob rau hauv ntub dej hydrogen sulphide ib puag ncig.
Q: Yam dab tsi yuav tsum tau teev tseg rau cov kav dej txias hauv cheeb tsam?
Qib nrog cov thermo-cov tshuab dov lossis normalizing feem ntau yog xaiv vim lawv xa cov Charpy cuam tshuam lub zog ntawm qhov tsim qis; qhov kev cuam tshuam tiag tiag yuav tsum tau teev nrog cov ntaub ntawv xaj.
Q: Puas yog ib feem ntawm lub npe qib ntawm daim ntawv pov thawj?
Nws yog qhia nrog qib ntawm daim ntawv pov thawj thiab ntawm cov yeeb nkab cim. Daim ntawv pov thawj uas hais tias tsuas yog X52 yam tsis muaj kev xa khoom tsis tiav rau ib qhov project uas tau teev cov lus xaus.
