Dab tsi Qib ATM A106 tus qauv suav nrog? Dab tsi yog qhov sib txawv ntawm cov qib?
Lub ASTM A106 tus qauv suav nrog peb qib: A, B, thiab C. Qhov sib txawv tseem ceeb muaj nyob hauv cov ntsiab lus carbon thiab cov kws kho tshuab. Qib A muaj cov ntsiab lus carbon ntawm tsawg dua lossis sib npaug rau 0.25% thiab qhov tsawg kawg tensile lub zog ntawm 330mpa; Qib B muaj cov ntsiab lus carbon ntawm tsawg dua lossis sib npaug rau 0.30% thiab lub zog tensile ntawm ntau dua los yog sib npaug rau 415MPA; Qib C muaj cov ntsiab lus carbon ntawm tsawg dua los yog sib npaug rau 0.35% thiab lub zog tensile ntawm ntau dua los yog sib npaug ntawm 485mpa. Qib B yog cov qhab nia siv feem ntau, nrog lub zog zoo thiab muaj zog. Qib C yog haum rau cov ntawv thov siab dua tab sis vuam yuav tsum tau siv cov txheej txheem sab nraud. Cov ntsiab lus manganese ntawm txhua qib yog 0.29-1.0%, thiab cov sulfur thiab phosphorus cov ntsiab lus yog tswj tau tsawg dua lossis sib npaug rau 0.035%.
Dab tsi yog cov tshuaj lom neeg muaj pes tsawg leeg yuav tsum muaj rau cov yeeb nkab A106?
Cov ntawv cim raug ntawm A106 qib B yog: C Tsawg dua lossis sib npaug nrog 0.035%, s sib luag rau 0.035%, Si ntau dua lossis sib npaug nrog 0.10%. Tag nrho cov nyiaj uas muaj cov khoom siv chromium, tooj liab, thiab cov nickel yuav tsum tsawg dua lossis sib npaug ntawm 0.15% tsawg dua lossis sib npaug rau 0.08%. Nruj me ntsis tswj cov sulfur thiab phosphorus cov ntsiab lus kom ntseeg tau tias muaj kev nruj, thiab tsim nyog siterive cov nyhuv deoxidation. Piv nrog API 5L, A106 muaj cov kev txwv tsis pub dhau ntawm cov ntsiab lus tseem ceeb. Cov qauv tsim qauv kom ua kom muaj tseeb tias cov khoom tseem muaj kev ua tau zoo thaum muaj kub.
Dab tsi yog cov khoom siv tshuab ntawm A106 kav hlau?
Cov neeg mechanical cov yam ntxwv ntawm qib B yog: Tensile lub zog ntau dua lossis sib npaug nrog 240mpa, elongation ntau dua los yog sib npaug rau 50 hli). Charpy V-Motch cuam tshuam lub zog loj dua los yog sib npaug rau 20J ntawm -29 degree. Tus nqi hardness feem ntau yog tswj tau nyob rau hauv ntau yam ntawm HB140-187. Cov kev ntxhov siab uas tau pub rau ntawm qhov kub siab (tsawg dua lossis sib npaug nrog 450 degree) yog li 80% ntawm qhov ntsuas kub. Cov ntsuas ntsuas no ua kom haum rau cov kev mob siab thiab kub-qhov xwm txheej, uas yog qhov zoo dua li cov roj carbon steel hlau.
Qhov ntsuas kub npaum li cas yog A106 cov yeeb nkab haum rau?
Tus tsim kev ua haujlwm ntawm A106 cov yeeb nkab steel yog -29℃rau 450 degree, thiab cuam tshuam kev ntsuas yuav tsum muaj rau qhov kub tsawg. Cov kev txwv sab sauv ntawm cov luv luv siv txias tuaj yeem ncav cuag 470 degree, tab sis lub siab kub ntev yuav ua rau cov teeb meem zoo. Tsawg-hlau kav hlau xws li ASTM A333 yuav tsum raug xaiv rau ib puag ncig hauv qab -29 degree. Nws qhov siab kub lub zog khaws cia cov kev khaws cia yog qhov zoo dua li ntawm cov hlau ua kom zoo li Q235 nyob rau hauv thaj tsam 300-400 degree. Thaum qhov ntsuas kub tshaj 425 Qib, qhov teeb meem ntawm cov xim oxide cov xim yuav tsum tau txiav txim siab.
Dab tsi yog qhov sib txawv ntawm A106 thiab lwm yam qauv zoo sib xws (xws li API 5L)?
Piv nrog API 5L, A106 them ntau dua rau kev ua haujlwm kub siab, thaum API 5L tsom rau kev thauj mus los ntawm kev thauj mus los. A106 yuav tsum muaj kev kho kom sov tag nrho, thaum API 5L tso cai rau kev kho cua sov hauv zos ntawm cov kav dej welded. Nyob rau hauv cov nqe lus ntawm cov tshuaj muaj kuab lom, A106 muaj cov kev txwv tsis pub dhau ntawm cov ntsiab lus tseem ceeb. Nyob rau hauv cov nqe lus ntawm qhov ntev ntev, cov txheej txheem sab nraud kam kam rau ntawm A106 yog ± 0.79mm, uas yog stricter tshaj api 5l. A106 feem ntau yog siv rau cov kav xa hluav taws xob, thaum API 5L feem ntau siv rau cov raj xa mus ntev.
