Qhov qis -} Alloy Alloy Nd Steel 09crCusb Rauv tau npaj rau ntawm cov nplaim hluav taws xob hauv hluav taws xob, kho kom zoo dua hluav taws xob ua kom zoo nkauj, lub zog hluav taws xob, sib txuas thiab tandem dov. Nws nta uas thaum lub sij hawm corrosion, ib qho kev sib tw ua yeeb yaj kiab nplua nuj nyob hauv CR, Cu, SB thiab ti thiab ti yog muaj zog anticorrosion.
ND steel yog qhov qis -} alloy txheej txheem steel. Piv nrog lwm hom steel xws li qis}}} cov hlau, corten, crada muaj cov khoom zoo heev thiab cov khoom siv tshuab.
Yeeb Nkab Txuj Ci: GB 3087, GB 5310
OD: 12.7mm - 127 hli
Wt: {0.9 - 12.7 hli
Qib: 09crCusB
Txheej Txheem: TAS TAWM LOS TAS TAS TAS
Kev Kho Cua Sov: Li qub lossis raws li ib qho kev thov
Kev Ntsuam Xyuas: Tension, Flattening, Flaring, Flange, Hardness, Rov Qab Fydrostening, thiab hydrostatic kev ntsuam xyuas
Daim Ntawv Thov: Siab muaj qhov chaw, Econizer, Aph (cua Preheatre) thiab lwm yam kev xeb {{}} resistant cov ntawv thov.
Cov Qauv Khoom
①gb 150.2-2011 "Siab Txog Lub Nkoj Part 2: Khoom"
NNNB / T 47019-2011 "Cov Kev Mob Rau Kev Ua Kom Yuam Kev Boiler thiab Kev Ua Pauv Tshav Kub"
Esh / t 3096-2012 "Lub hauv paus ntsiab lus ntawm cov khoom xaiv rau cov neeg siab sulfur crude ua cov cuab yeej siv thiab xa hluav taws xob tsim"
Kev Sau Txuj Ci (GB 150.2-2011)
|
C |
Tsawg dua los yog sib npaug rau 0.12 |
Cr |
0.70~1.10 |
|
Si |
0.20~0.40 |
CU |
0.25~0.45 |
|
Mn |
0.35~0.65 |
SB |
0.04~0.10 |
|
P |
Tsawg dua los yog sib npaug rau 0.030 |
S |
Tsawg dua los yog sib luag rau 0.020 |
Cov Cuab Yeej Cuab Yeej Cuab Yeej
|
Nominal tuab (hli) |
Lub zog tensile Rm(MPa) |
Paib lub zog Rel(MPa) |
Elongation A(%) |
|
Tsawg dua los yog sib npaug rau 8 |
390~550 |
Ntau dua los yog sib npaug rau 245 |
Ntau dua los yog sib npaug rau 25 |
Corrosion Kuj
Hauv sulfuric acid ntawm nruab nrab - kub thiab sib xyaw ua ke vim yog CU, thiab cov neeg ua haujlwm ntawm cov hlau thiab muaj qhov siab sulfuric acid corrosion tsis kam.
Corrosion tus nqi sib piv ntawm ND Hlau thiab lwm cov hlau (70℃-50% h2Yog li4Lus)
|
Hom Hlau |
Corrosion tus nqi mg / (cm2h) |
Lub sij hawm |
|
Nd (09crcusb) |
7.3 |
1 |
|
A3 (Q235B) |
103.5 |
14.18 |
|
Corten - a |
63 |
8.63 |
|
CRR1A |
13.4 |
1.84 |
|
321 |
21.7 |
2.97 |
|
S - kaum 1 & 2 |
27.4 |
3.75 |
Rau cov corrosion tsis kam, GB 150.2-2011 ceg ntoo yuav tsum tau sim rau corrosion tsis kam, thiab ib qho qauv hlau nyob rau hauv txhua pob ntawm ob qho kev coj, thiab ib qho qauv yuav tsum yog cov yeeb nkab ntev ntawm 10 hli. Soak hauv H2Yog li4Kev daws nrog pawg pawg feem ntawm 50% ntawm ib qho kub tsis tu ncua ntawm 70℃(± 2 degree) rau 24 teev. Tus nqi nruab nrab ntawm cov xeb ntawm ob qho hnoos qeev tsis loj dua 80g / m2× h lossis 140g / m2Tre h, qhov ntsuas tshwj xeeb yog qhia hauv daim ntawv cog lus xaj.
Daim ntawv thov
ND steel yog tam sim no zoo tshaj plaws steel rau "sulfuric acid qis {} Kev siv hluav taws xob tsis kam tiv thaiv cov cuab yeej thiab lwm yam khoom siv los tiv thaiv cov lwg me me corrosion ntawm Sulphur -} muaj cov roj flue.
