Yield zog thiab tensile zog:
API 5L B-qib yeeb nkab: Qhov tsawg kawg nkaus tawm lub zog yog 241MPa, thiab lub zog tensile thaj tsam ntawm 415MPa rau 655MPa. Thaum raug kev kub ntxhov los yog nro, nws deformation kuj loj, thiab nws yog haum rau lub sij hawm uas tsis tshua muaj siab thiab kev nyuaj siab.
API 5L X80 yeeb nkab: Qhov tsawg kawg nkaus tawm lub zog yog 552MPa, thiab lub zog tensile siab dua. Cov cuab yeej muaj zog siab no ua rau nws tuaj yeem tiv taus qhov hnyav sab hauv thiab kev thauj khoom sab nraud, xws li ua lub luag haujlwm tseem ceeb hauv kev mus ntev, txoj kab uas hla, cov roj thiab cov kav dej siab, uas tuaj yeem txo cov phab ntsa tuab ntawm cov kav dej thiab txo cov nqi tsim kho.
Toughness thiab impact resistance:
API 5L B-qib yeeb nkab: Qhov elongation feem ntau tsis tsawg dua 21%, thiab nws muaj cov ductility zoo, tab sis lub toughness kuj tseem txwv nyob rau hauv qis kub los yog muaj kev cuam tshuam ib puag ncig. Hauv qee qhov kev thov uas yuav raug cuam tshuam rau sab nraud quab yuam lossis kev hloov pauv kub, yuav tsum muaj kev tiv thaiv ntxiv.
API 5L X80 yeeb nkab: Tom qab tshwj xeeb alloying thiab cov txheej txheem tsim khoom, nws muaj qhov zoo toughness thiab cuam tshuam, thiab tuaj yeem tswj tau qhov kev ncaj ncees ntawm cov kav dej thiab txo qhov kev pheej hmoo ntawm kev tawg hauv cov roj thiab cov kav dej hauv cov kav dej thiab hloov chaw, xws li dej hiav txwv tob. , thaj chaw txias lossis thaj chaw seismic.
Cov txheej txheem tsim khoom
API 5L B qib yeeb nkab:
Feem ntau tsim los ntawm cov txheej txheem kub dov thiab tsim cov txheej txheem, ua raws li normalizing lossis kev ntxhov siab kho cua sov. Cov txheej txheem no yog qhov yooj yim heev, nrog rau cov kev xav tau tsawg rau cov cuab yeej tsim khoom thiab thev naus laus zis, thiab tuaj yeem tsim khoom loj ntawm tus nqi qis.
Thaum lub sij hawm tsim cov txheej txheem, kev tswj kom zoo yog tsuas yog tsom rau qhov tseeb qhov tseeb thiab qhov zoo ntawm qhov zoo, thiab cov kev tswj hwm ntawm microstructure thiab complex kev ua tau zoo kuj tsawg.
API 5L X80 Tube:
Yuav tsum muaj cov txheej txheem tsim khoom ntau dua, xws li thermomechanical tswj kev ua haujlwm (TMCP) lossis quenching thiab tempering (Q&T). Cov txheej txheem no suav nrog kev tswj xyuas meej ntawm qhov tsis xws li qhov kub thiab txias, deformation tus nqi thiab qhov txias txias kom ua tiav qhov yuav tsum tau muaj lub zog siab thiab zoo toughness.
Cov txheej txheem tsim khoom yuav tsum muaj cov khoom siv ntau lawm thiab kev tswj xyuas nruj kom ntseeg tau tias cov microstructure ntawm cov yeeb nkab ua tau raws li qhov yuav tsum tau ua, thiab ntau qhov kev ntsuas kev ua tau zoo yuav tsum tau ua kom cov khoom zoo.
Carbon Steel API 5L PSL2 GR.B Seamless Pipes
