Carbon Steel A333 Qib 6 Pipe lus piav qhia
Cryogenic tubing, ASTM A333, yog seamless steel tubing ua raws li American Society for Testing and Materials (ASTM) A333 tus qauv rau kev siv cryogenic. Nws yog feem ntau yog siv rau hauv cryogenic siab nkoj piping thiab tshav kub exchanger piping systems ua hauj lwm nyob rau hauv ib puag ncig xws li ntawm -45℃mus rau -195℃. Cov khoom no siv cov ntaub ntawv tshwj xeeb thiab cov txheej txheem los xyuas kom meej cov qauv kev ruaj ntseg thiab kev nyab xeeb nyob rau hauv cov huab cua tsis zoo.
Nyob rau hauv -cov lus qhia tshwj xeeb npog npog sab nraud ntawm 8-1240mm thiab phab ntsa tuab ntawm 1-200mm. Cov ntaub ntawv suav nrog cov qib hauv tsev xws li 16MnDG thiab 10MnDG, nrog rau cov qib thoob ntiaj teb los ntawm ASTM A333-Qib 1 txog Qib 11. Cov khoom yuav tsum ua kom tau raws li qhov yuav tsum tau ua rau kev ua haujlwm ntawm cryogenic, thiab nws cov tshuaj muaj pes tsawg leeg thiab cov khoom siv kho tshuab yuav tsum ua raws li cov kev ntsuas uas tau teev tseg hauv tus qauv kom ntseeg tau tias muaj kev cuam tshuam rau cov pob txha tawg nyob rau hauv cryogenic tej yam kev mob.
Tsawg kub Carbon Steel LTCS yeeb nkab specification
SA 333 Gr 6 Chemical and Physical Properties
| A333 Gr.6 | C | Mn | P | S | Si | Ni |
| 0.3 | 0.29-1.06 | 0.025 | 0.025 | Ntau dua lossis sib npaug li 0.10 | – |
ASTM A333 Gr 6 Pipes Mechanical Analysis
| Qib | Yield zog, min, psi (MPa) | Tensile zog, min, psi (MPa) | Elongation (%) |
| A333 Gr.6 | 35 000 (240) | 60 000 (415) | 30 feeb |
ASME SA333 Qib 6 Cov yeeb nkab sib npaug
| Qib | Yeeb | Tube | Fittings | Flanges | Bar | Forgings | EN | Khoom siv |
|---|---|---|---|---|---|---|---|---|
| Tsawg Temp CS Gr. 1 | A333 GR . 1 | A333 GR . 1 | A420 WPL1/6 | A350 LF2 | A516 | A350 LF2 | ||
| Tsawg Temp CS Gr. 3 | A333 GR . 3 | A333 GR . 3 | A420 WPL3 | A350 L3 | A516 | A350 LF3 | ||
| Tsawg Temp CS Gr. 6 | A333 GR . 6 | A333 GR . 6 | A420 WPL6 | A350 LF2 | A516 | A350 LF2 | TS EN 10216-4 | P265 NL |
yog 333g 6 impact test
SA-333 Gr.6 cuam tshuam kev xeemyog ib qho tseem ceeb uas yuav tsum tau ua kom ntseeg tau tias cov khoom tsim nyog rauqis-kev pabcuam kub. Nov yog cov ncauj lus kom ntxaws:
1. Lub hom phiaj ntawm Kev Ntsuas Kev Ntsuas
Toughness Verification: Paub meej tias cov khoom khaws cia ductility thiab tiv taus cov pob txha tawg ntawm qhov kub thiab txias.
Ua raws li: Ua tau raws li ASTM A333 / ASME SA333 tus qauv rau qis -kub carbon steel kav.
2. Kev Xeem Xeem
Kub: Feem ntau ua ntawm-50 ° F (-45 ° F)los yog txias dua, nyob ntawm cov qib specification.
Zog Absorption:
Yam tsawg kawg nkausnruab nrab cuam tshuam lub zog(piv txwv li, 20 ft·lbf los yog 27 J ntawm -50℃F / -45℃rau 0.375–1.5 nyob rau hauv. thickness).
Cov tuab tuab yuav muaj qhov tsawg dua (piv txwv li, 24 ft·lbf / 32 J rau Tsawg dua lossis sib npaug li 0.375 hauv.).
Specimen Orientation:
Transverse kev taw qhia (perpendicular mus rau cov yeeb nkab axis) simulate phem tshaj - tus cwj pwm fracture.
3. Txoj Kev Xeem
Charpy V-Notch (CVN) Test:
Tus qauv notched specimen raug ntaus los ntawm lub pendulum rauj ntsuas lub zog absorbed thaum tawg.
Number of Specimens: Feem ntaupeb tus qauvib lub tshav kub / ntau, kuaj ntawm qhov ntsuas kub xav tau.
4. Kev lees txais
Tus nqi nruab nrab: Tag nrho peb cov qauv yuav tsum ua kom tau raws li qhov xav tau ntawm lub zog tsawg kawg nkaus.
Tus kheej tus nqi: Tsis muaj ib qho qauv tuaj yeem poob hauv qab70% ntawm qhov nruab nrab(piv txwv li, yog tias qhov nruab nrab yog 30 J, tsis muaj qauv <21 J).
5. Cov yam ntxwv cuam tshuam rau cov txiaj ntsig
Khoom siv: Tsawg sulfur / phosphorus cov ntsiab lus minimizes nkig inclusions.
Kev kho cua sov: Normalizing refines grain qauv, txhim kho toughness.
Thickness: Cov phab ntsa tuab yuav xav tau qhov ntsuas kub qis dua lossis muaj zog dua.
6. Kev lag luam xav tau SA-333 Gr.6 Impact Testing
LNG Production: Cov kav dej thiab lub tank cia ua haujlwm hauv qab -100℃F (-73 degree).
Petrochemical Cog: Cov chav ua haujlwm txias lossis cov tub yees txias.
Arctic Pipelines: Subzero ib puag ncig nrog kev pheej hmoo ntawm kev tawg tawg.
7. Key Takeaway
SA-333 Gr.6 cuam tshuam kev kuaj xyuas kom meejkev cia siab rau qhov txias txias, tiv thaiv kev puas tsuaj loj hauv cov txheej txheem tseem ceeb. Ib txwm txheeb xyuas cov ntawv ceeb toom los ntawm cov tuam txhab lag luam kom paub meej tias ua raws li qhov project- qhov tshwj xeeb kub thiab lub zog xav tau.
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