Txheej txheem cej luam
Tsawg- alloy ASTM A423 Qib 2 welded steel kavmuaj nyob rau hauv hluav taws xob tiv thaiv welded (ERW) daim ntawv thiab muaj nyob rau hauv Gnee qhov chaw nres nkoj warehouses, npaj rau tam sim ntawd xa zaub mov.
Tag nrho cov khoom tau muab nrog daim ntawv pov thawj zeb xeem (MTC) raws li EN 10204 Hom 3.1 lossis 3.2, thiab tuaj yeem raug tshuaj xyuas los ntawm thib peb-txoj kev faib pawg xws li BV, SGS, TUV, LR, ABS, lossis DNV-GL.
Cov kav dej no yog tsim los rau siab- muaj cov ntawv thov thiab ib puag ncig uas muaj kev tiv thaiv corrosion thiab kev ntseeg tau ntawm cov qauv tseem ceeb.
Kev Xav Tau & Kev Pab Ntxiv
Rau A423 Qib 2 welded steel kav, Gnee muab:
Hydrostatic testing lossis nondestructive electric testing (NDT).
Mill Test Certificate (MTC) nrog EN 10204 Hom 3.1 lossis 3.2.
CNC txiav rau cov neeg siv khoom - qhov ntev thiab cov duab kos.
Kev tiv thaiv saum npoo: txheej txheej dub, kua roj vanish, pickling, tua blasting, thiab beveled kawg kev sib txuas.
Mechanical Properties
| Khoom | Yam tsawg kawg nkaus |
|---|---|
| Yield zog (MPa) | 255 |
| Tensile zog (MPa) | 415 |
| Elongation hauv 50 mm (%) | 25 |
Cov khoom siv kho tshuab no ua kom lub zog siab, toughness, thiab ductility, haum rau ntau yam kev lag luam thiab cov qauv siv.
Chemical Composition (Kev Ntsuas Kub Max %)
| Element | Max / Min % |
|---|---|
| Cov pa roj carbon (C) | 0.15 |
| Silicon (Si) | – |
| Manganese (Mn) | 0.50–1.00 |
| Phosphorus (P) | 0.04 |
| Sulfur (S) | 0.05 |
| Copper (Cu) | 0.20–0.60 |
| Molybdenum (hli) | Ntau dua lossis sib npaug rau 0.10 |
| Nickel (Ni) | 0.40–1.10 |
Qhov no ua tib zoo tswj cov alloy muaj pes tsawg leeg muab kev tiv thaiv corrosion, weldability, thiab ntev -lub sij hawm durability.
Cov khoom siv
ASTM A423 Qib 2 welded steel kav yog tsim rau:
- Boilers, economizers, thiab kub exchangers
- Industrial piping thiab siab hlab ntsha
- Kev siv tshuaj, petrochemical, thiab fais fab nroj tsuag
- Tej yaam num thiab mechanical engineering tej yaam num
Nrog rau kev tiv thaiv corrosion siab, lub zog txhua yam, thiab ua raws li cov qauv thoob ntiaj teb, cov kav dej no yog qhov kev xaiv ntau yam thiab txhim khu kev qha rau kev xav tau kev lag luam thiab cov qauv tsim.
Cov tshuaj muaj pes tsawg leeg ntawm ASTM A423 Qib 1 yog dab tsi?
Cov tshuaj muaj nyob rau hauv A423 Gr 1 qib yog carbon, phosphorus, manganese, sulfur, tooj liab, thiab silicon. Cov ntsiab lus siab ntawm carbon, manganese, thiab sulfur muab kev txhim kho oxidation tsis kam, pitting tsis kam rau ib puag ncig acidic, crevice kuj, thiab kev ntxhov siab corrosion cracking kuj.
Dab tsi yog cov khoom siv SA 423?
ASTM A423 Weathering Steel Pipes Gr. 1 yog nrov siv hauv cov duab puab sab nraum zoov. ASTM A423 Corten Steel Tubes Qib 1 kuj tseem siv rau hauv choj thiab lwm yam kev siv loj. Cov tshuaj muaj nyob rau hauv Corten steel raj no yog carbon, phosphorus, manganese, sulfur, tooj liab, silicon.
Dab tsi yog qhov ntau thiab tsawg ntawm ASTM A423 kav?
ASTM A423 cov kav dej muaj nyob rau hauv ntau yam txheej sab nraud, phab ntsa tuab, thiab ntev, nyob ntawm seb lawv puas seamless lossis welded. Tus qauv npog nominal yeeb nkab qhov ntau thiab tsawg ntawm 1/8 nti mus rau 24 ntiv tes, nrog phab ntsa thickness thiab ntev sib txawv raws li daim ntawv thov.
Dab tsi yog cov yam ntxwv ntawm ASTM A423 kav dej?
Cov kav dej no yog tsim los rau siab -kev siv kub thiab yog li ntawd muaj zog tensile siab, yield zog, thiab creep kuj. Cov khoom muaj xws li lub zog tensile ntawm 415-550 MPa, yield zog ntawm 205-275 MPa, thiab elongation haum rau kev tsim thiab vuam. Tus nqi tseeb nyob ntawm seb cov yeeb nkab qib thiab phab ntsa thickness.
ASTM A423 cov kav dej feem ntau siv nyob qhov twg?
ASTM A423 kav dej yog dav siv hauv boilers, tshav kub exchangers, superheaters, thiab cov khoom siv fais fab nroj tsuag. Lawv yog cov zoo tagnrho rau cov kav dej uas nqa siab -kub chav, dej kub, los yog gases, qhov twg corrosion kuj thiab seem stability nyob rau hauv tshav kub yuav tsum tau.
