Cov ntsiab lus ceev
ASTM A336 yog qhov tshwj xeeb rauSeamless Ferritic thiab Austenitic Steel Yeeb Nkab Siv Rau Siab-}} kub kev pabCov. Nws yog ib qho qauv tseem ceeb rau kev lag luam zoo li lub hwj chim ib tiam, petrochemical, thiab cov khoom siv uas cov kav dej yuav tsum walland huab cua sov thiab siab.
Tus tseem ceeb takaway yog tias ASTM A336 yog aKhoom Qhia, tsis yog ib qho seem ib. Nws txhais cov tshuaj thiab cov khoom siv mechanical ntawm cov hlau, tsis yog cov yeeb nkab loj lossis cov duab. Rau qhov ntev, koj yuav coj nws nrog cov xaim hluav taws xob zoo liASTM A335.
Cov ncauj lus kom ntxaws
1. Dab tsi yog ATTM A336?
ASTM A336 (tag nrho cov npe:Txheem cov qauv tshwj xeeb rau kev sib dhos Ferritic thiab Austenitic Alloy - steel yeeb nkab rau siab-} kub kev pab) Npog ob peb qib ntawm alloy steel, txhua tus tsim rau cov ntsuas kub tshwj xeeb thiab kev tiv thaiv corrosion.
2. Cov qhab nia ntawm lawv cov ntawv thov
Qib yog txhais tau los ntawm tsab ntawv (F) ua raws li tus lej. Txhua qib muaj cov tshuaj lom neeg muaj kuab lom ua kom sib txawv rau cov kev pabcuam sib txawv.
| Teem nqi | Lub Npe / Lub Npe Tseem Ceeb | Cov yam ntxwv tseem ceeb thiab cov ntawv thov raug |
|---|---|---|
| F1 | Cov pa roj molybdenum | Lub zog zoo ntawm kev kub ntxhov. Siv rau cov boiler cov hlab thiab supertheat voos. |
| F11 | Chav kawm 1, 2, 3 - chromium molybdenum | Lub zog siab dua F1. Siv hauv cov nroj tsuag hluav taws xob thiab kev ua kom zoo rau high- kub raj. |
| F12 | Chav kawm 1, 2 - chromium molybdenum | Zoo ib yam li F11 tab sis nrog ib qho sib txawv chromium tshuav nyiaj li cas. |
| F22 | Chav kawm 1, 3 - 2.25}}% chromium molybdenum | Zoo heev ua rau siab -} hydrogen nres (hatha). Ib tug nquag qib rau kev xa khoom thiab tshuaj lom neeg cog ntoo. |
| F5 | 5% chromium molybdenum | Zoo tsis kam mus rau oxidation thiab sulfidation thaum kub. |
| F9 | 9% chromium molybdenum | Siab zog thiab oxidation tsis kam ntawm ntau kub heev. Ntau yam nyob rau hauv cov khoom siv hluav taws xob zoo. |
| F91 | Hloov kho 9% chromium | Txhim kho lub zog thiab cov neeg pleev kev cog lus piv rau F9 vim yog Vanadium thiab Niobium ntxiv. Ib tug ua haujlwm ua haujlwm niaj hnub - kev pab kub. |
| F92 / F911 | Tshaj 9-10% chromium | Txawm muaj zog dua F91 rau qhov xav tau tshaj plaws Ultra -} supercritical fais fab cog ntaub ntawv thov. |
| Austenitic qib (F304h, F316H, F321h, F347H) | Stainless hlau (chromium - nickel) | Zoo heev corrosion thiab siab - kub lub zog. Siv nyob rau hauv ib puag ncig mob hnyav thiab muaj ib puag ncig thiab muaj kev kub ntxhov heev - kub seem ntawm boilers. |
3. Cov tseev kom tseem ceeb ntawm cov kev qhia tshwj xeeb
Txheej txheem tsim khoom:Cov yeeb nkab yuav tsum yogtsis ntse, lub ntsiab lus nws yog tsim los ntawm cov khoom ntim khoom uas tsis muaj lub leeg. Qhov no muab lub zog sib txuam thiab ua tau zoo dua nyob rau hauv kev kub siab.
Kev Kho Cua Sov:Tag nrho cov kav dej yuav tsum yauv cov txheej txheem kev kho cua sov tshwj xeeb (piv txwv li ib txwm muaj, kev daws anerting) raws li qhov xav tau rau lawv qib kom ua tiav cov khoom siv xav tau thiab microstructure.
Tshuaj lom neeg cov tshuaj:Qhov txwv nruj tau muab tso rau feem pua ntawm cov pa roj carbon, mangelorus, sulfur, silicon, thiab alloying ntsiab xws li chromium, molybdenum, thiab lwm yam.
Cov Khoom Siv Neeg Kho Tshuab:Tus qauv qhia qhov yuav tsum muaj rau:
Lub zog tensile
Paib lub zog
Elongation
Kuaj:Cov kav dej yuav raug rau ntau yam kev sim, suav nrog:
Hydrostatic kev kuaj:Txhua cov yeeb nkab raug sim rau ib lub siab lim dej kom muaj kev ncaj ncees.
Nondestructive Hluav Taws Xob Ntsuas:Feem ntau ib qho kev kuaj mob Eddy tam sim no lossis ultrasonic kuaj kom kuaj xyuas cov kev tsis xws luag.
Poj Ntsuam Kuaj, Kev Kuaj Hardness, thiab lwm yam.Ua rau ntawm kev coj tsis raws.
4. Qhov tseem ceeb tshaj plaws: ASTM A336 thiab A335
Qhov no yog ib qho tshwm sim ntawm kev tsis meej pem.
ASTM A336:Nov yog qhov tshwj xeeb rau covCov khoom siv raw(tus hlau) rau ob qho yeeb nkab thiab kev tsis lees paub. Nws yog qhov "nws tau ua dab tsi los ntawm."
ASTM A335 / ASME SA335:Nov yog qhov tshwj xeeb rauSeamless Ferritic Alloy - Cov Yeeb NkabRau siab - kev pab kub. Nws yog "cov yeeb yaj kiab kawg cov yeeb yam." Nws yeej tseem ceeb hais tias, "Yog tias koj ua yeeb nkab rau high {{}}}}}} Qhov ua tau nws tus kheej yuav tsum ua kom tau raws li cov kev ntsuas thiab kev xeem."
Hauv kev coj ua, koj yuav luag txhua tus pom cov yeeb nkab xaj rau tus qauvASTM A335(piv txwv li, A335 P11, A335 P22, A335 P91), uas hu rau cov qib txhais hauvASTM A336 (e.g., A336 F11, A336 F22, A336 F91).
5. Cov Ntawv Thov Tib Neeg
ASTM A336 / A335 kav yog siv hauv cov ntawv thov tseem ceeb uas tsis yog qhov kev xaiv:
Lub zog tiam:Cov kab hluav taws xob cov kab, kev rov ua haujlwm siab {{}}} Cov nroj tsuag hauv thee, roj, thiab cov ntoo hluav taws xob nuclear.
Petrochemical & Refineries:Hloov cov kab hauv dej catalytic cracking (FCC) chav, hydrocacker units, hydrocacker units, thiab lwm yam siab} kub / siab {1} kev ntsuas siab.
Roj & Roj:Hauv cov kev ua haujlwm ntws mus thiab cov teeb meem nruab nrab nrog kev ua haujlwm siab uas muaj kev kub siab {{}} siab}- kub (HPHT) Wells.
Tag
ASTM A336Yog lub vaj tse cov ntaub ntawv rau high - Kev Ua Tau Zoo Alloy Steel siv nyob rau hauv Seamless Kav Rau Cov Ib puag ncig. Thaum muaj kev ncaj ncees lossis yuav cov yeeb nkab xws li, koj feem ntau yuav siv cov yeeb nkab txheemASTM A335Nrog rau qib tshwj xeeb (piv txwv li, P11, P22, P91) uas tau sib haum rau A336 Cov Qib Khoom.
