X52 yog qib nyob rau hauv API 5L roj pipeline steel qauv thiab belongs rau pipeline steel. N thiab M ob leeg xa mus rau lub xeev xa khoom, N yog deformation normalizing, thiab M sawv cev rau thermomechanical dov lossis thermomechanical txoj kev. Kev xa khoom tsis muaj kev kho cua sov yog hu ua kub dov lossis txias kos duab (dov) lub xeev lossis lub xeev tsim khoom; kev xa khoom tom qab kev kho cua sov yog hu ua kev kho cua sov hauv xeev, lossis raws li hom kev kho cua sov, nws yog hu ua normalizing (normalizing), quenching thiab tempering, cov tshuaj tov, annealing xeev.
Hauv kev nthuav dav:
Nyob rau hauv lub xeev tus me nyuam, X52M: sawv cev rau thermomechanical dov los yog thermomechanical sib sau. Nyob rau hauv lub xeev no, cov yeeb nkab steel tsis kho cua sov thiab xa ncaj qha.
X52N: sawv cev rau deformation normalizing xeev. Hauv lub xeev no, cov yeeb nkab steel yog kho cua sov, feem ntau hu ua normalizing xeev.
Hauv kev tsim cov txheej txheem, X52M: tsim los ntawm kev tswj cov txheej txheem dov, cov txheej txheem no tuaj yeem tswj cov microstructure thiab txhua yam khoom ntawm cov yeeb nkab steel, thiab tsim nyog rau kev tsim cov yeeb nkab steel yeeb nkab.
X52N: Tsim los ntawm cov txheej txheem normalizing uas tso cai rau cov yeeb nkab steel kom tau txais cov qauv thiab cov khoom zoo dua qub, thiab feem ntau yog siv rau hauv cov ntawv thov uas yuav tsum muaj zog dua thiab zoo dua corrosion kuj.
Daim ntawv thov scenarios, L360M : Vim nws lub zog siab, zoo toughness thiab muaj zog corrosion kuj, nws yog feem ntau siv nyob rau hauv zus tau tej cov high-pressure pipeline steel kav thiab yog haum rau industries xws li roj av, tshuaj lom neeg kev lag luam, thiab lub zog.
L360N: Vim nws txoj kev kho cua sov, nws muaj cov khoom siv zoo dua qub thiab kev tiv thaiv corrosion, thiab tsim nyog rau lub sijhawm uas yuav tsum muaj siab dua ntawm cov khoom siv.
