ASTM A334 raj yog cov pa roj carbon thiab hlau alloy steel tsim rau cov ntawv thov kub tsawg thiab tsim los ntawm kev siv cov txheej txheem seamless thiab welded.
Qee qhov loj ntawm cov khoom yuav tsis muaj nyob rau hauv qhov kev qhia tshwj xeeb no vim tias cov phab ntsa tuab dua muaj qhov cuam tshuam tsis zoo rau cov khoom cuam tshuam qis-kub.
Kev faib tawm qib
ASTM A334 muaj ntau qib rau ntau qhov chaw kub qis sib txawv.
Qib 1, Qib 3, Qib 6, Qib 7, Qib 8, Qib 9, thiab Qib 11.
Cov qib sib xws rauCov yeeb nkab hlau alloy yog Qib 3, Qib 7, Qib 8, Qib 9, thiab Qib 11.
Txhua qib hlau muaj nws cov tshuaj lom neeg tshwj xeeb thiab cov khoom siv kho tshuab, nrog rau cov qauv ntsuas kub tsawg kawg nkaus uas yuav tsum tau ua kom tiav.
Cov Txheej Txheem Tsim Khoom
Cov raj yuav tsum tau ua los ntawmtsis muaj qhov tsis sib xwslos yog tsis siv neegtxheej txheem vuamtsis muaj ntxiv cov hlau filler hauv kev ua haujlwm welding.
Kev Kho Mob Kub
Qib 1, 3, 6, 7, thiab 9
Ua kom zoo li qub los ntawm kev ua kom sov mus rau qhov kub thiab txias tsis pub tsawg dua 1550 ° F [845 ° C] thiab txias hauv huab cua lossis hauv chav txias ntawm lub cub tawg uas tswj hwm huab cua.
Yog tias xav tau kev kho kom sov, nws yuav tsum tau sib tham.
Rau cov qib saum toj no ntawm cov kav hlau tsis muaj seamless xwb:
Rov ua kom sov thiab tswj kev ua haujlwm kub thiab qhov kub ntawm kev ua haujlwm kub-ua tiav mus rau qhov kub tiav ntawm 1550 - 1750 °F [845 - 955 ℃] thiab txias hauv lub cub tawg tswj tau los ntawm qhov kub pib tsis tsawg dua 1550 °F [845 °C].
Qib 8
Xaiv ib qho ntawm cov hau kev hauv qab no rau kev kho cua sov.
Tua thiab Tempered;
Ob Chav Normalized thiab Tempered.
Qib 11
Seb puas yuav tsum tau anneal Qib 11 raj yog ib qho kev pom zoo ntawm tus neeg yuav khoom thiab tus neeg muag khoom.
Thaum cov raj Qib 11 raug annealed lawv yuav tsum tau normalized nyob rau hauv qhov ntau ntawm 1400 - 1600 ℉ [760 - 870 ° C].
ASTM A334 Cov Tshuaj Lom Zem
Rau cov hlau Qib 1 lossis Qib 6, nws tsis raug tso cai muab cov qib alloying rau lwm cov ntsiab lus tshaj li cov uas xav tau. Txawm li cas los xij, nws raug tso cai ntxiv cov ntsiab lus tsim nyog rau kev deoxidation ntawm cov hlau.
ASTM A334 Kev Ntsuas Tshuab
Cov kev cai ntawm cov khoom siv kho tshuab tsis siv rau cov raj me dua 1/8 nti [3.2 hli] hauv txoj kab uas hla sab nraud thiab nrog phab ntsa tuab dua 0.015 nti [0.4 hli].
1. Khoom Siv Tensile
Qhov ntev tsawg kawg nkaus suav rau txhua 1/32 nti [0.80 hli] txo qis hauv phab ntsa tuab:
Rau cov yeeb nkab me dua 1/2 nti [12.7 hli] hauv txoj kab uas hla sab nraud, cov nqi elongation uas muab rau cov qauv strips yuav tsum siv.
2. Kev Ntsuas Kev Cuam Tshuam
Xaiv qhov kub thiab txias kom haum thiab lub zog cuam tshuam raws li qib thiab phab ntsa tuab.
Lub zog cuam tshuam
Kub Cuam Tshuam
| Qib | Kub Ntsuas Kev Cuam Tshuam | |
| ℉ | ℃ | |
| Qib 1 | -50 | -45 |
| Qib 3 | -150 | -100 |
| Qib 6 | -50 | -45 |
| Qib 7 | -100 | -75 |
| Qib 8 | -320 | -195 |
| Qib 9 | -100 | -75 |
3. Kev Ntsuas Qhov Nyuaj
| Qib | Rockwell | Brinell |
| Qib 1 | B 85 | 163 |
| Qib 3 | B 90 | 190 |
| Qib 6 | B 90 | 190 |
| Qib 7 | B 90 | 190 |
| Qib 8 | — | — |
| Qib 11 | B 90 | 190 |
4. Kev Ntsuas Kom Sib Nqus
Yuav tsum muaj ib qho kev sim ua kom tiaj tiaj rau ntawm cov qauv los ntawm txhua qhov kawg ntawm ib lub raj tiav ntawm txhua pawg tab sis tsis yog qhov siv rau qhov kev sim flare lossis flange.
5. Kev Ntsuas Flare (Cov Raj Seamless)
Yuav tsum ua ib qho kev sim flare rau cov qauv los ntawm txhua qhov kawg ntawm ib lub raj tiav ntawm txhua pawg, tab sis tsis yog qhov siv rau kev sim flattening.
6. Kev Ntsuas Flange (Cov Raj Welded)
Yuav tsum ua ib qho kev sim flange rau ntawm cov qauv los ntawm txhua qhov kawg ntawm ib lub raj tiav ntawm txhua qhov, tab sis tsis yog qhov siv rau kev sim flattening.
7. Kev Ntsuas Rov Qab Flattening
Rau cov kav dej welded, ib qho kev sim rov qab flattening yuav tsum tau ua rau ntawm ib qho qauv los ntawm txhua 1500 ft [460 m] ntawm cov kav dej tiav.
Kev Ntsuas Hluav Taws Xob Hydrostatic lossis Nondestructive
Txhua lub yeeb nkab yuav tsum raug kuaj xyuas hluav taws xob lossis hydrostatically raws li Specification A1016/A1016M.
Cov ntawv thov rau ASTM A334 Steel Pipe
Feem ntau siv los thauj cov kua dej lossis cov pa roj xws li roj av, roj, thiab lwm yam tshuaj lom neeg ntawm qhov kub qis.
1. Cov kav dej cryogenic: feem ntau siv rau hauv kev tsim cov kav dej rau kev thauj cov kua dej cryogenic (piv txwv li cov roj av liquefied, kua nitrogen). Vim nws cov khoom cryogenic zoo heev, nws muaj peev xwm tswj tau lub zog thiab kev tawv ntawm qhov kub qis heev.
2. Cov khoom sib pauv cua sov thiab cov condenserCov khoom siv hloov cua sov thiab cov condenser tuaj yeem siv tau zoo los txias lossis ua kom sov cov txheej txheem, tshwj xeeb tshaj yog nyob rau hauv kev lag luam tshuaj lom neeg thiab petrochemical.
3. Cov hlab ntsha siab: kuj tseem siv tau los tsim cov hlab siab uas tsim los rau kev ua haujlwm cryogenic. Cov hlab no siv tau los khaws cov tshuaj cryogenic lossis rau cov txheej txheem kev lag luam tshwj xeeb.
4. Cov tshuab thiab cov khoom siv tub yeesCov raj no yog siv rau kev thauj cov tub yees, tshwj xeeb tshaj yog qhov twg xav tau cov khoom siv uas tiv taus qhov kub tsawg.
ASTM A334 Tus Qauv Sib Npaug
EN 10216-4: Npog cov kav hlau uas tsis yog alloyed thiab alloyed, uas muaj cov yam ntxwv qis-kub.
JIS G 3460: cuam tshuam nrog cov kav hlau alloy rau kev pabcuam cryogenic.
GB/T 18984: siv rau cov kav hlau tsis muaj seamless rau cov hlab ntsha cryogenic. Nws qhia meej txog kev tsim thiab tsim cov kav hlau uas haum rau qhov chaw kub qis heev.
Txawm hais tias cov qauv no yuav txawv ntawm cov ntsiab lus thiab cov kev cai tshwj xeeb, lawv zoo sib xws hauv lawv lub hom phiaj thiab daim ntawv thov, uas yog kom ntseeg tau tias muaj kev nyab xeeb thiab kev ua tau zoo ntawm cov kav hlau hauv cov chaw cryogenic.
Peb Cov Khoom Muaj Feem Xyuam
Txij li thaum nws tau tsim tsa xyoo 2014, Botop Steel tau dhau los ua tus thawj coj ntawm cov yeeb nkab carbon steel hauv Northern China, paub txog kev pabcuam zoo heev, cov khoom lag luam zoo, thiab cov kev daws teeb meem dav dav.
Lub tuam txhab muaj ntau yam yeeb nkab hlau carbon thiab cov khoom lag luam cuam tshuam, suav nrog cov yeeb nkab hlau seamless, ERW, LSAW, thiab SSAW, nrog rau cov khoom siv yeeb nkab thiab cov flanges tiav. Nws cov khoom tshwj xeeb kuj suav nrog cov hlau alloys zoo thiab cov hlau stainless austenitic, tsim los ua kom tau raws li qhov xav tau ntawm ntau yam haujlwm yeeb nkab.
Cov cim npe: ASTM A334, cov yeeb nkab hlau carbon, astm a334 gr 6, astm a334 gr 1.
Lub sijhawm tshaj tawm: Tsib Hlis-20-2024