Summary (Nyob ib pliag)
Txheem: JIS G3429- Kev kub siab Gas Lub tog raj kheej Seamless Steel Pipes
Qib: STH 22
Kev Siv Tseem Ceeb:Kev tsim cov siab - siab lub tog raj kheej roj rau cov pa mus tas li xws li Oxygen, Nitrogen, Argon, thiab compressed cua.
Cov yam ntxwv tseem ceeb:Kev ua tau zoo txias txias thiab lub zog siab, tshwj xeeb tsim los kom sib sib zog nqus- kos rau hauv cov duab hemispherical rau lub tog raj kheej kawg.
1. Txuj: JIS G3429
Lub Japanese Industrial StandardJIS G3429yog lub npe "Seamless steel kav rau siab siab gas cylinders. " Tus qauv no qhia txog cov kev cai rau seamless steel kav uas yog npaj los siv rau hauv kev tsim cov welded, siab - siab gas cylinders.
Cov kav dej no tsis siv li - yog rau cov kav dej. Hloov chaw, lawv raug txiav rau hauv "plhaub," uas tom qab ntawd muab rhaub thiab sib sib zog nqus- kos rau hauv ntau- txheej txheem txheej txheem los tsim ob halves (lub dome thiab lub hauv paus) ntawm lub tog raj kheej roj. Tom qab ntawd ob lub halves no tau sib koom ua ke los ntawm ib lub voj voog ncig.
2. Qib: STH22
Lub npe "STH" sawv rauSteelTub rauHigh- lub tog raj kheej siab. Tus naj npawb "22" qhia tusyam tsawg kawg nkaus tensile zoghauv kgf/mm².
STH 22:Yam tsawg kawg Tensile Strength=22 kgf/mm² ≈216 MPa rau
3. Tshuaj muaj pes tsawg leeg
Cov tshuaj muaj pes tsawg leeg yog ua tib zoo tswj kom zoo weldability thiab, tseem ceeb tshaj, zoo heev txias formability yam tsis muaj cracking.
Tus qauv muaj pes tsawg leeg rau STH22 feem ntau yog raws li hauv qab no (los ntawm kev ntsuas kub):
| Lub ntsiab | Cov pa roj carbon (C) | Silicon (Si) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | Copper (Cu) |
|---|---|---|---|---|---|---|
| Cov ntsiab lus (%) | Tsawg dua lossis sib npaug li 0.22 | 0.10 - 0.35 | 0.30 - 0.90 | Tsawg dua lossis sib npaug li 0.035 | Tsawg dua lossis sib npaug li 0.035 | Tsawg dua los yog sib npaug li 0.20 |
Cov ntsiab lus tseem ceeb ntawm Chemistry:
Cov pa roj carbon tsawg:Cov ntsiab lus ntawm cov pa roj carbon monoxide yog khaws cia qis kom ntseeg tau zoo weldability thaum lub tog raj kheej halves tau koom nrog.
Tswj Manganese:Manganese muab lub zog thiab txhim kho hardenability, tab sis nws qhov ntau yog tswj kom tswj tau qhov formability.
Tsawg impurities:Tsawg heev ntawm Phosphorus thiab Sulfur raug yuam kom tiv thaiv embrittlement thiab txhim kho formability.
4. Mechanical Properties
Cov khoom siv kho tshuab raug kuaj ntawm ib qho kev xeem uas tau txais los ntawm cov yeeb nkab.
| Khoom | Tus nqi |
|---|---|
| Tensile zog (min) | 22 kgf/mm² (≈ 216 MPa) |
| Yield zog (min) | 17 kgf/mm² (≈ 167 MPa) * |
| Elongation (min) | 35% |
Nco tseg:Tus qauv feem ntau qhia txog qhov kev sim hardness li lwm txoj hauv kev rau kev ntsuas lub zog rau STH22.
5. Dimensional Tolerances
JIS G3429 cov kav dej muaj qhov ntsuas nruj rau sab nraud (OD), phab ntsa tuab (WT), thiab ntev los xyuas kom meej qhov sib xws hauv cov txheej txheem tsim lub tog raj kheej. Qhov kev kam rau siab yog nyob ntawm qhov ntev uas tau teev tseg tab sis nruj dua li cov kua dej txheem - nqa cov kav dej.
6. Cov txheej txheem tsim khoom
Cov kav dej yog tsim los uaseamless, feem ntau dhau los ntawm cov txheej txheem kub - tiav (xws li lub tshuab ntsaws ntsaws lossis mandrel zeb) kom ua tiav qhov yuav tsum tau muaj qhov ntev thiab cov khoom siv tshuab.
7. Kev siv ntau
Covib leeg, thawj daim ntawv thovrau JIS G3429 STH22 kav yog tsim los ntawm:
Siab -Lub tog raj kheej Gas Siabrau:
Industrial Oxygen Lub tog raj kheej
Medical Oxygen Lub tog raj kheej
Nitrogen Lub tog raj kheej
Argon Lub tog raj kheej (rau vuam)
Compressed Air Cylinders (piv txwv li, rau SCUBA, tua hluav taws)
Lub tog raj kheej rau lwm yam uas tsis yog - corrosive mus tas li gases.
Sib piv nrog Lwm Cov Qauv
Thaum JIS G3429 yog tus qauv Japanese, cov ntaub ntawv zoo sib xws muaj nyob rau hauv lwm cov qauv thoob ntiaj teb rau cov tog raj kheej roj:
ISO 9809-1:Qib zoo li 34CrMo4 muaj ntau, uas yog cov hlau alloy uas muaj zog dua.
DOT / UN Standards:Hauv Tebchaws Meskas, cov lus qhia tshwj xeeb xws li DOT-3AA tswj lub tog raj kheej tsim, feem ntau siv Chrome-Molybdenum steel (piv txwv li, 4130X).
TS EN 1964-1:Tus qauv European rau lub tog raj kheej roj.
STH 22yog ib qho tseem ceeb rau ua ibcarbon hlauqib, ua rau nws tsis tshua muaj zog tab sis tus nqi ntau dua - zoo dua li qhov siab dua - zog chromium- molybdenum alloys siv rau siab heev - kev siv siab.
Xaus
JIS G3429 STH22yog ib qho tshwj xeeb carbon steel seamless yeeb nkab qib engineered tshwj xeeb rau kev nyab xeeb - daim ntawv thov tseem ceeb. Nws cov khoom sib npaug zoo kawg nkaus rau cov txheej txheem tsim tshwj xeeb ntawm kev sib sib zog nqus- kos duab thiab vuam yuav tsum tsim kom muaj kev ntseeg siab thiab nyab xeeb siab - lub tog raj kheej roj. Nws yog cov khoom siv tseem ceeb hauv kev lag luam thiab kev kho mob roj cov saw hlau.
