ASTM A691 Qib 1 1/4Cr Alloy Welded Steel Yeeb Nkab
ASTM A691 Qib 1 1/4Cr alloy welded yeeb nkab yog hom steel yeeb nkab ua los ntawm cov khoom siv hlau, tshwj xeeb tsim los ua kom tau raws li cov qauv ASTM A691.
Nov yog cov ncauj lus kom ntxaws txog nws cov khoom muaj pes tsawg leeg thiab cov yam ntxwv:
Alloy Composition:
Lub "1 1/4Cr" hauv lub npe qhia tias cov hlau muaj kwv yees li 1.25% chromium (Cr). Chromium yog lub hauv paus tseem ceeb uas txhim kho cov hlau siab - kub lub zog, corrosion kuj, thiab oxidation kuj.
Raws li cov kev xav tau tshwj xeeb, cov hlau kuj tseem tuaj yeem muaj lwm cov ntsiab lus xws li molybdenum (Mo) txhawm rau txhim kho nws cov kev ua tau zoo nyob rau hauv siab - kub thiab siab - siab.
Khoom yam ntxwv:
Siab -kub tsis kam: Qhov sib ntxiv ntawm chromium thiab lwm yam alloying ntsiab muab cov yeeb nkab steel zoo heev - qhov kub thiab txias, tso cai rau nws tswj nws cov cuab yeej cuab tam ntawm qhov kub siab.
Corrosion kuj: Chromium tsim ib txheej oxide passive rau ntawm cov hlau, uas tiv thaiv nws los ntawm corrosion los ntawm ntau yam tshuaj thiab ib puag ncig.
Mechanical zog: Cov alloy muaj pes tsawg leeg thiab cov txheej txheem tsim khoom ua rau cov yeeb nkab steel nrog lub zog tensile siab, yield zog, thiab toughness, ua rau nws tsim nyog rau kev thov.
A691 Qib 1 1/4 Cr tshuaj ntsuam xyuas:
|
Lub npe |
C |
Mn |
P |
S |
Si |
Cr |
Mo |
|
ASTM A691 Qib 1 1/4 Cr |
0.05-0.17
|
0.40- 0.65 |
0.035
|
0.035 |
0.50-0.80
|
1.00-1.50
|
0.45-0.65 |
A691 Qib1 1/4 Cr lub cev muaj zog:
|
Lub npe |
Tensile zog Ksi [MPa] |
Yield zog, min Ksi [MPa] |
Elongation hauv 8 nti. [200mm], min % |
|
ASTM A691 Qib 1 1/4 Cr |
75-100 [515- 690] |
43 [310] |
18 |
Kev tsim khoom:
ASTM A691 Qib 1 1/4Cr alloy welded yeeb nkab yog feem ntau tsim siv hluav taws xob fusion vuam (EFW) lossis lwm yam kev siv vuam tsim nyog.
Cov txheej txheem tsim khoom muaj kev tswj xyuas nruj kom ntseeg tau tias cov yeeb nkab ua tau raws li cov txheej txheem tshuaj lom neeg, cov khoom siv kho tshuab, thiab qhov ntev ntev.
Daim ntawv thov:
Vim nws zoo heev ua ke ntawm siab -kub kuj, corrosion kuj, thiab mechanical zog, ASTM A691 Qib 1 1/4Cr alloy welded yeeb nkab yog dav siv nyob rau hauv cov roj av, tshuaj, thiab fais fab kev lag luam.
Nws yog feem ntau ua haujlwm nyob rau hauv siab - kub thiab siab - cov kav dej siab, cov khoom siv hluav taws xob, cov boilers, thiab lwm yam khoom siv tseem ceeb uas muaj kev ntseeg siab thiab kav ntev yog qhov tseem ceeb.
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