Cov ntaub ntawv technical
Tshuaj muaj pes tsawg leeg rau TB/T 1979 Q450NQR1 STEEL PLATE (Kub Ntsuas Max%)
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Cov ntsiab lus tseem ceeb ntawm Q450NQR1
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C
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Si
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Mn
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P
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S
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Cu
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Cr
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Ni
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0.12
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0.75
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1.50
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0.025
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0.008
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0.20-0.55
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0.30-1.25
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0.12-0.65
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Lub ntsiab kom zoo dua ntawm cov tshuaj muaj pes tsawg leeg ntawm Q450NQR1 steel yog tias nws yog ua los ntawm cov pa roj carbon zoo tib yam thiab muaj me me ntawm tooj liab, npib tsib xee, thiab lwm yam corrosion-resistant ntsiab. Nws muaj cov yam ntxwv ntawm lub zog steel, ductility, sib sau, vuam, hnav tsis kam, kub kub, qaug zog thiab lwm yam; Cov huab cua tsis kam yog 2 ~ 8 npaug ntawm cov pa roj carbon zoo tib yam, thiab cov txheej txheem kev ua haujlwm yog 1.5 ~ 10 npaug ntawm cov pa roj carbon zoo tib yam, uas tuaj yeem siv rau cov txheej nyias nyias, liab qab lossis yooj yim txheej. Cov hlau muaj cov yam ntxwv ntawm kev tiv thaiv xeb, tiv thaiv corrosion, lub neej ntev, thinning thiab noj txo, txuag zog thiab txuag hluav taws xob, uas yog qhov zoo rau cov tuam txhab tsim khoom thiab cov neeg siv khoom.
Cov yam ntxwv tseem ceeb ntawm Q450NQR1 cov khoom xa mus rau cov hlau tsis tshua muaj hlau nrog cov txheej txheem tiv thaiv xeb thiab atmospheric corrosion kuj, uas tuaj yeem siv los tsim cov qauv hlau xws li tsheb, txuas hniav, yees, thiab ntim khoom. Piv nrog rau carbon steel, weathering steel muaj zoo corrosion kuj nyob rau hauv cov huab cua. Piv nrog rau cov hlau tsis muaj steel, cov hlau tsis muaj zog tsuas muaj me me ntawm cov hlau alloying, xws li phosphorus, tooj liab, chromium, npib tsib xee, molybdenum, niobium, vanadium, titanium, thiab lwm yam. Tag nrho cov alloying ntsiab lus tsuas yog ob peb feem pua, tsis zoo li stainless. steel, uas ncav cuag 100%. Kaum feem pua, yog li tus nqi kuj tsawg.
