Cov ntsiab lus tseem ceeb cuam tshuam rau tus nqi ntawm cov roj carbon steel kav?
Hloov pauv nyob rau hauv tus nqi ntawm raw khoom (steel billets) ncaj qha txiav txim siab tus nqi. Tus nqi nce ntawm cov hlau hlau hauv 2023 tau tshwm sim 20% nce ntxiv hauv cov kav dej. Kev muab thiab thov (xws li nce cov peev txheej hauv kev xav tau) thiab xws li Tuam Tshoj kev tsim khoom lag luam rau 60% ntawm kev tsim khoom thoob ntiaj teb) yog cov sijhawm ntev. Kev txwv kev tiv thaiv ib puag ncig (xws li cov kev txwv kev tsim khoom thiab emission txo) yuav nce nqi hauv lub sijhawm luv luv. Kev Lag Luam Kev Lag Luam Thoob Ntiaj Teb (xws li tiv thaiv cov haujlwm) cuam tshuam rau cov nqi hauv cheeb tsam. Kev qhia tshwj xeeb sib txawv (xws li cov kav dej seamless yog 30-50% kim dua welded kav) kuj yog tus tseem ceeb ntawm tus nqi.
Kev Cuam Tshuam ntawm Kev Tsim Nyog Ua Rau Cov Khoom Siv Hluav Taws Xob Hlau Yeeb Nkab Lag Luam?
Cov txheej txheem luv luv hluav taws xob rauv stat steelmaking (seem hlau ua dua tshiab ua haujlwm ntxiv kom txo cov roj teeb los ntawm 30%. Chromium-Dawb Dawb Galvanizing (xws li Kev Kho Mob Silane) yog ib qho kev sib nrug. Dej-raws cov tshuaj tiv thaiv dej los tiv thaiv corrosion txo voc emissions. Cov ntsiab lus digital (xws li kev soj ntsuam xyuas ai zoo) txo cov kev siv hluav taws xob thiab cov nqi txheeb. Lub Neej Kuaj Lub Neej (LCA) tau dhau los ua cov neeg siv khoom lag luam los txhawb nqa cov ntawv pov thawj cov pa roj carbon.
Daim ntawv thov cov kev cia ntawm cov pa roj carbon steel hauv tshav ntawm lub zog tshiab?
Hydrogen energy pipelines need to develop materials that resist hydrogen embrittlement (such as microalloying). Carbon capture (CCUS) projects require high-pressure CO₂ transmission pipes. The demand for large-diameter thick-walled pipes (>Φ2000mm) rau offshore cua lub zog hluav taws xob kev loj hlob yog loj hlob. Hnav cov kav hlau galvanized steel kav rau photovoltaic nkhaus yog cov kev tshawb fawb thiab kev txhim kho. High-kub corrosion ua hauj lwm siv thev naus laus zis rau geothermal kav xav tau tawg los ntawm.
Qhov cuam tshuam ntawm Lwm Cov Khoom (xws li cov kav dej yas yas) ntawm kev ua lag luam?
HDPE kav dej tau hloov qee cov pa roj carbon steel hauv lub teb ntawm cov dej tsis muaj siab thiab dej ntws, tab sis lawv qhov kub tsis kam (<60℃) and insufficient rigidity limit their application. FRP pipes are corrosion-resistant but costly and are only suitable for special media. Carbon steel-plastic composite pipes (such as plastic-lined pipes) combine the advantages of both parties and are potential competitors in medium-pressure scenarios. Future material competition will focus more on the full life cycle cost rather than the initial price.
Cov digital kev hloov pauv tau hloov pauv cov pa roj kev lag luam steel?
Ntse cov txheej txheem paub tsis siv neeg lub sijhawm ua haujlwm thiab kev pom online (xws li iti kev puas lees paub). Kev Thaiv Hluav Taws Xob yog siv rau cov ntaub ntawv txuas ntxiv (xws li cov ntaub ntawv tshaj tawm los tiv thaiv kab mob). Cov Ntxawm Digins Simulate cov txheej txheem kev pabcuam raj thiab kwv yees lub neej seem. E-Commerce Platforms (xws li "Ganglianbao") Cov saw ua kom luv. Kev qhia txog tej thaj chaw deb arge kev pab them nqi.
