**1. ASTM A333 Qib 3 cov khoom sib npaug yog dab tsi?
ASTM A333 Qib 3 yog cov pa roj carbon steel yeeb nkab tsim feem ntau rau qis- kev pabcuam kub. Nws qhov sib npaug yog nyob ntawm tus txheej txheem uas koj tau xa mus.
* ** Qhov ze tshaj plaws thiab ncaj tshaj qhov sib npaug ** feem ntau suav hais tias ** ASTM A334 Qib 3 **, uas suav nrog qis -kev pabcuam kub * seamless thiab welded carbon thiab alloy- steel tubes *. Cov tshuaj lom neeg thiab cov khoom siv kho tshuab zoo sib xws, tab sis A334 yog rau cov raj, thaum A333 yog rau cov yeeb nkab.
* Hauv European qauv, qhov sib npaug sib npaug yog ** EN 10216-1 P235TR2 **.
* Hauv German cov qauv, ** DIN 17172 St 35.8 III ** yog qhov sib tw ze.
* Hauv Japanese qauv, ** JIS G3456 STPT370 ** yog cov khoom zoo sib xws.
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias thaum cov ntaub ntawv no muaj cov tshuaj lom neeg zoo sib xws thiab cov khoom siv kho tshuab, lawv tsis tas yuav hloov pauv yam tsis muaj kev tshuaj xyuas tag nrho ntawm cov phiaj xwm tshwj xeeb thiab cov lej siv tau.
**2. Puas yog ASTM A333 Qib 6 carbon steel?
Yog lawm, ASTM A333 Qib 6 yog carbon steel. Nws yog ib tug tua (deoxidized) carbon steel nrog ib qho tseem ceeb ntxiv ntawm silicon thiab cov ntsiab lus siab tshaj plaws carbon. Tsis zoo li qee cov hlau alloy uas muaj cov chromium, npib tsib xee, los yog molybdenum, A333 Gr. 6 cov ntsiab lus feem ntau yog hlau, carbon, manganese, silicon, thiab lwm yam kab kawm, ruaj khov muab tso rau hauv qeb ntawm carbon steels. Nws cov yam ntxwv tseem ceeb yog nws qhov cuam tshuam toughness ntawm qhov kub thiab txias.
**3. Qhov txawv ntawm A333 thiab A106 yeeb nkab yog dab tsi?
Thawj qhov sib txawv yog nyob rau hauv lawv qhov kev pabcuam kub.
* ** ASTM A106 ** yog tus qauv tshwj xeeb rau * seamless carbon steel yeeb nkab rau siab -kev pabcuam kub *. Nws yog feem ntau siv nyob rau hauv cov fais fab nroj tsuag, refineries, thiab boilers rau conveying chav, dej, thiab lwm yam kua nyob rau hauv siab kub. Nws tsis muaj qhov yuav tsum tau ua kom muaj kev cuam tshuam kev sim.
* ** ASTM A333 ** yog tus qauv tshwj xeeb rau * seamless thiab welded steel yeeb nkab rau qis -kev pabcuam kub *. Nws qhov kev xav tau tseem ceeb yog tias nws yuav tsum xeem dhau Charpy Impact Tests ntawm qhov ntsuas kub qis kom ntseeg tau tias nws tsis ua nkig thiab ua tsis tiav hauv qhov chaw txias.
Hauv cov ntsiab lus, siv A106 rau siab- daim ntawv thov kub thiab A333 rau qis- daim ntawv thov kub.
** 4. Qhov txawv ntawm A333 Gr 3 thiab Gr 6 yog dab tsi?
Qhov sib txawv tseem ceeb ntawm ASTM A333 Qib 3 thiab Qib 6 yog lawv cov tshuaj muaj pes tsawg leeg thiab lawv cov kev txwv qis - qhov ntsuas kub.
* ** Kev Pab Cuam Kub: ** Qib 3 yog tsim los rau kev pabcuam qis rau **-50℃F (-45 degree)**, thaum Qib 6 yog tsim los rau kev pabcuam qis rau **-150℃F (-101 degree)**. Qib 6 tuaj yeem tiv taus qhov txias dua.
* ** Tshuaj muaj pes tsawg leeg: **
** Qib 3** yog carbon{1}}manganese steel. Nws muaj ntau dua manganese cov ntsiab lus (0.90%) piv rau Qib 6.
* ** Qib 6** yog silicon -tua carbon steel. Nws muaj cov ntsiab lus ntawm silicon (0.10% min) uas yog ib qho tseem ceeb deoxidizer. Nws kuj tseem muaj cov ntsiab lus tsawg tshaj plaws ntawm manganese (0.29%) thiab qis tshaj cov ntsiab lus carbon (0.30% vs 0.19% rau Gr. 6). Qhov tshwj xeeb chemistry no muab Qib 6 nws qhov qis dua -kub toughness.
**5. ASTM A333 tus qauv yog dab tsi?
ASTM A333 yog tus qauv Specification rau "Seamless thiab Welded Steel Yeeb Nkab rau Tsawg- Kev Pabcuam Kub thiab Lwm Yam Kev Siv." Lub hom phiaj tseem ceeb ntawm tus qauv no yog tswj hwm kev tsim cov pa roj carbon thiab alloy steel kav uas tau npaj los siv rau hauv ib puag ncig uas tsis muaj qhov kub thiab txias tuaj yeem ua rau cov qauv carbon steel ua nkig thiab ua tsis tiav. Qhov kev xav tau tseem ceeb uas txhais cov qauv no yog qhov yuav tsum tau **Charpy V-Notch Impact Test**. Txhua qib ntawm cov yeeb nkab hauv qab A333 yuav tsum ua kom tau raws li qhov tshwj xeeb cuam tshuam rau lub zog nqus qhov tseem ceeb ntawm qhov kev xaiv sub-zero kub. Tus qauv npog ntau qib (piv txwv li, Qib 1, 3, 6, 7, 9, 10, 11), txhua tus muaj nws tus kheej cov tshuaj muaj pes tsawg leeg thiab cov khoom siv kho tshuab kom haum rau qhov sib txawv ntawm qhov ntsuas kub thiab qhov xav tau ntawm lub zog.
