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Teb ceev
Hastelloy B3 (UNS N10665)Ua tau zoo tshaj Hastelloy B2 (UNS N10665) hauv ib puag ncig hydrochloric acidnyob rau hauv feem ntau cov kev ua haujlwm. B3 muaj kev tiv thaiv zoo tshaj rau thermal instability, riam- kab tawm tsam, thiab cua sov- cuam tshuam cheeb tsam (HAZ) corrosion tshwm sim los ntawm hlau thiab tooj liab paug - hom tsis ua hauj lwm feem ntau rau B2 hauv tiag - ntiaj teb HCl kev pabcuam.
Txawm li cas los xij, B2 tseem raug nqi - zoorau dilute HCl kev pab cuam ntawm ambient kub qhov chaw kis tau tus mob yog nruj me ntsis tswj. Nyeem tag nrho cov lus qhia kom phim txoj cai alloy rau koj qhov kev ua haujlwm tshwj xeeb.
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Taw qhia
Hydrochloric acid (HCl) yog ib qho ntawm cov tshuaj muaj zog tshaj plaws nyob rau hauv lub neej. Nws yog siv rau hauv steel pickling, tshuaj synthesis, roj-zoo acidizing, kev tsim tshuaj, thiab zaub mov- qib ua - thoob plaws lub ntiaj teb ua lag luam tshajUSD $ 3.4 billion ib xyoos twg. Kev xaiv cov hlau tsis raug rau HCl kev pabcuam tuaj yeem ua rau muaj kev xeb sai, kev kaw tsis tau zoo, kev kho tus nqi, thiab, qhov phem tshaj plaws, kev nyab xeeb tsis zoo.
Ntawm tag nrho cov nickel{0}}raws li alloys,Hastelloy B-series alloys(feem ntau B2 thiab B3) yog tus qauv kub rau kev tuav hydrochloric acid thoob plaws txhua qhov kev xav tau thiab ntawm qhov kub siab. Ob leeg koom nrog Ni-Mo alloy tsev neeg, tab sis lawv yogtsis interchangeable. Kev xaiv ntawm lawv yuav tsum nkag siab tias txhua lub alloy coj li cas raws li koj qhov kev khiav hauj lwm qhov kub thiab txias, HCl concentration, qib sib kis, thiab txoj kev tsim khoom.
Phau ntawv qhia no muab cov ntaub ntawv nruj, cov ntaub ntawv - txhawb nqa kev sib piv ntawm Hastelloy B2 thiab Hastelloy B3 los pab koj txiav txim siab xaiv txoj cai - thawj zaug.
Hastelloy B2 yog dab tsi? (UNS N10665)
Hastelloy B2, kuj raug xaivUNS N10665thiabTIAB SA 2.4617, tau tsim nyob rau hauv 1970s raws li kev txhim kho tshaj tus thawj Hastelloy B. Nws yog ib tugnickel{0}}molybdenum binary alloynrog cov ntsiab lus molybdenum siab heev (26–30%), uas muab kev tiv thaiv zoo rau kev txo cov kua qaub ib puag ncig - tshwj xeeb tshaj yog tsis yog -oxidizing hydrochloric acid.
Kev tiv thaiv zoo heev rau HCl ntawm tag nrho cov concentrations thiab kub mus txog qhov kub thiab txias
Cov ntsiab lus molybdenum siab heev (26–30 wt.%) - qhov tseem ceeb ntawm nws cov kua qaub
Tsawg carbon thiab silicon cov ntsiab lus kom txo qis carbide nag lossis daus
Txaus siab rau nag lossis daus ntawm cov theem teeb meem (Ni4Mo) hauv 700-870℃ntau yam thaum tsim khoom lossis vuam
rhiab heev rau hlau (Fe) thiab tooj liab (Cu) cov kab mob hauv cov kua qaub - txawm tias cov kab mob ua kom corrosion
Dav muaj los ntawm thoob ntiaj teb mills; Cov khoom siv qis dua B3
Hastelloy B3 yog dab tsi? (UNS N10675)
Hastelloy B3, tsimUNS N10675, yog qhov tom ntej - tiam evolution ntawm B2, qhia los ntawm Haynes International nyob rau hauv 1990s. Nws tau tsim tshwj xeeb los kov yeej ob qhov tsis muaj zog tshaj plaws ntawm B2:thermal instabilitythiabrhiab heev rau kev sib kis. B3 ua tiav qhov no los ntawm kev tswj hwm kev hloov pauv rau cov hlau chemistry - tshwj xeeb tshaj yog los ntawm kev ntxiv cov hlau, chromium, thiab manganese ua cov ntsiab lus sib npaug thaum txo cov ntsiab lus molybdenum me ntsis.
Sib npaug lossis zoo dua HCl corrosion kuj piv rau B2 thoob plaws txhua qhov ntau
Ua kom zoo dua thermal stability - resistant rau nag lossis daus ntawm embrittling theem
Kev tiv thaiv zoo dua rau riam- kab tawm tsam thiab cua sov- thaj chaw cuam tshuam (HAZ) corrosion tom qab vuam
Kev kam rau siab dua rau cov hlau thiab tooj liab paug hauv HCl kev pabcuam
Yooj yim rau fabricate thiab weld yam tsis muaj kev cuam tshuam kev ua haujlwm corrosion
Nyiam alloy rau ASME siab lub nkoj thiab cov kav dej siv hauv HCl kev pabcuam
Tus nqi siab dua B2 - me ntsis raug lees paub los ntawm kev txo qis kev pheej hmoo thiab kev ua haujlwm ntev dua
Tshuaj muaj pes tsawg leeg: B2 vs B3 Sab los ntawm Sab
Qhov sib txawv tseem ceeb tshaj plaws ntawm B2 thiab B3 nyob hauv lawv cov tshuaj muaj pes tsawg leeg. Cov lus hauv qab no nthuav tawm cov nominal muaj pes tsawg leeg ntawm ASTM B333 (phaj / ntawv / sawb) thiab ASTM B619 (welded yeeb nkab) specifications.
|
Lub ntsiab |
Cim |
Hastelloy B2 (UNS N10665) |
Hastelloy B3 (UNS N10675) |
Engineering tseem ceeb |
|
Nickel (Qhov sib npaug) |
Ni |
Ntau dua lossis sib npaug li 65% (bal.) |
Ntau dua lossis sib npaug li 65% (bal.) |
Primary corrosion{0}}resistant matrix |
|
Molybdenum |
Mo |
26–30% |
27–32% |
Core reducer -acid resistance driver |
|
Hlau |
Fe |
Tsawg dua lossis sib npaug li 2.0% |
1.0–3.0% |
B3 siv Fe ua lub zog ruaj khov |
|
Chromium |
Cr |
Tsawg dua lossis sib npaug li 1.0% |
1.0–3.0% |
B3 Cr txhim kho oxidative stability |
|
Cobalt |
Co |
Tsawg dua lossis sib npaug li 1.0% |
Tsawg dua lossis sib npaug li 3.0% |
Khoom-kev daws teeb meem |
|
Manganese |
Mn |
Tsawg dua lossis sib npaug li 1.0% |
Tsawg dua lossis sib npaug li 3.0% |
B3 Mn pab thermal stability |
|
Aluminium |
Al |
Tsawg dua los yog sib npaug li 0.50% |
Tsawg dua los yog sib npaug li 0.50% |
Deoxidizer |
|
Silicon |
Si |
Tsawg dua lossis sib npaug li 0.10% |
Tsawg dua lossis sib npaug li 0.10% |
Khaws qis kom tiv thaiv SiO2 embrittlement |
|
Cov pa roj carbon |
C |
Tsawg dua lossis sib npaug li 0.02% |
Tsawg dua lossis sib npaug li 0.01% |
Tsawg C tiv thaiv carbide nag lossis daus |
|
Tungsten |
W |
- |
Tsawg dua lossis sib npaug li 3.0% |
B3 W txhim kho crevice kuj |
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Ntsiab Lus Pom Zoo
Qhov txhob txwm tshaj tawm ntawmhlau (1-3%), chromium (1-3%), thiab manganese (mus txog 3%)nyob rau hauv B3 ua raws li metallurgical stabilizer. Cov ntsiab lus no cuam tshuam qhov tsim ntawm cov teeb meemNi4Mo Phaj- lub nkig intermetallic compound lub luag hauj lwm rau B2's susceptibility rau thermal instability thiab post-weld corrosion nres. |
Mechanical Properties Sib piv
Ob lub alloys xa cov khoom siv zoo sib xws hauv lawv cov kev mob annealed. Cov lus hauv qab no piav qhia txog chav tsev ib txwm-kub txhua yam khoom raws li ASTM cov qauv.
|
Khoom |
Chav tsev |
Hastelloy B2 |
Hastelloy B3 |
Sau ntawv |
|
Tensile zog (min.) |
MPa (ksi) |
760 (110) |
760 (110) |
Sib npaug zog |
|
Yield Strength 0.2% offset (min.) |
MPa (ksi) |
350 (51) |
345 (50) |
Yeej tseem zoo tib yam |
|
Elongation (min.) |
% |
40 |
40 |
ductility zoo heev (ob leeg) |
|
Hardness (max.) |
HRB |
100 |
100 |
Sib piv hardness |
|
Qhov ntom |
g/cm³ |
9.22 |
9.22 |
Tib qhov hnyav rau ib ntim |
|
Melting Range |
degree |
1330–1380 |
1370–1418 |
B3 me ntsis siab melting point |
|
Thermal conductivity |
W/m·K |
11.1 |
11.1 |
Sib npaug kub hloov |
|
Coefficient ntawm Thermal Expansion |
µm / m· degree |
10.8 |
10.8 |
Tib thermal expansion |
|
Max. Kev Pabcuam Temp. (oxidizing) |
degree |
~538 |
~538 |
B-series tsis rau siab oxidizing |
|
Max. Kev Pabcuam Temp. (txo) |
degree |
~760 |
~815 |
B3 me ntsis siab qab nthab |
Tau qhov twg los: ASTM B333, B335, B619, B622. Tus nqi yog yam tsawg kawg nkaus los yog raug; txheeb xyuas nrog cov ntawv ceeb toom zeb kuaj (MTR) rau koj qhov tshwj xeeb cua sov.
Corrosion Performance nyob rau hauv Hydrochloric Acid
Nov yog ntu tseem ceeb tshaj plaws rau kev xaiv HCl kev pabcuam. Cov ntaub ntawv hauv qab no qhia txog kev tshaj tawm cov nqi corrosion los ntawm kev soj ntsuam kev ywj pheej hauv kev tswj xyuas.
|
HCl Concentration |
Kub |
B2 Corrosion Rate (mm / xyoo) |
B3 Corrosion Rate (mm / xyoo) |
Pom zoo Alloy |
|
5% |
25℃(ambient) |
< 0.025 |
< 0.025 |
Ob leeg txais tau |
|
10% |
25℃(ambient) |
< 0.05 |
< 0.05 |
Ob leeg txais tau |
|
20% |
25℃(ambient) |
< 0.10 |
< 0.08 |
Ob leeg txais tau |
|
10% |
60 degree |
0.10–0.20 |
0.08–0.15 |
Ob leeg tau txais (B3 nyiam) |
|
20% |
60 degree |
0.20–0.40 |
0.15–0.30 |
B3 nyiam |
|
10% |
Kub kub (~ 103 degree) |
0.50–1.20 |
0.30–0.80 |
B3 nyiam heev |
|
20% |
Kub kub (~ 108 degree) |
1.50–3.00 |
0.80–1.50 |
B3 nyiam heev |
|
37% (txuas ntxiv) |
Kub kub (~ 110 degree) |
> 5.00 |
2.50–4.00 |
B3 tsuas yog - kev pabcuam huab cua |
Corrosion tus nqi ntsuas: < 0.13 mm / xyoo=zoo heev; 0.13–0.5=tau; > 0.5=txwv kev pabcuam; > 1.25=tsis pom zoo.
Qhov no yogqhov tshwm sim tiag tiag - hom tsis ua haujlwm hauv ntiaj teb rau Hastelloy B2. Hauv kev lag luam HCl kev pabcuam, cov kua qaub tsis tshua muaj siab ntshiab. Cov hlau yaj los ntawm cov khoom siv hluav taws xob sab saud, xeb, lossis cov txheej txheem sib kis tau qhia txog Fe³⁺ ions - uas ua raws li oxidizing tus neeg sawv cev thiab ua kom nrawm B2 corrosion.
|
Fe³⁺ Kev Tiv Thaiv Kab Mob |
HCl Conc. |
Temp. |
B2 Corrosion Rate (mm / xyoo) |
B3 Corrosion Rate (mm / xyoo) |
Qhov tshwm sim |
|
0 ppm (HCl ntshiab) |
10% |
60 degree |
0.13 |
0.10 |
Ob leeg siv tau |
|
100 ppm Fe³⁺ |
10% |
60 degree |
0.45 |
0.18 |
B2 ciam teb, B3 OK |
|
500 ppm Fe³⁺ |
10% |
60 degree |
2.10 |
0.40 |
B2 ua tsis tau, B3 tau txais |
|
1000 ppm Fe³⁺ |
10% |
60 degree |
> 5.00 |
0.85 |
B2 tsis haum, B3 nyiam |
|
100 ppm Fe³⁺ |
20% |
Boiling |
> 10.0 |
1.80 |
B2 ua tsis tiav kev puas tsuaj |
|
⚠ Kev Ceeb Toom Tseem Ceeb: Hlau Contamination & Hastelloy B2
tsawg li500 ppm ntawm Fe³⁺ paugtuaj yeem nce tus nqi corrosion ntawm Hastelloy B2 ntau dua 16 × ntawm 60 degree. Hauv cov chaw cog qoob loo tiag tiag, kev kis kab mob hlau siab tshaj 500 ppm yog qhov tshwm sim. Tshwj tsis yog tias koj tuaj yeem lav ultra-HCl ntshiab nrog kev saib xyuas tsis tu ncua,Hastelloy B3 yog qhov kev xaiv zoo dua thiab txhim khu kev qha.
|
Vuam yog yam tsis muaj nyob hauv qhov tiag -lub ntiaj teb piping thiab nkoj fabrication. Cov lus hauv qab no piv li cas B2 thiab B3 coj tus cwj pwm tom qab vuam raug.
|
Weld-Qhov cuam tshuam |
Hastelloy B2 |
Hastelloy B3 |
Kev cuam tshuam rau HCl Kev Pabcuam |
|
Ni4Mo theem nag lossis daus |
HIGH (700-870℃ntau) |
LOW (tsawg heev) |
Ni4Mo ua rau embrittlement & ceev corrosion |
|
Riam- kab tawm tsam (HAZ) |
Tseem ceeb heev |
Yam tsawg kawg nkaus |
HAZ nres rhuav tshem cov kev ncaj ncees hauv HCl |
|
rhiab heev rau qeeb txias |
Siab - yuav tsum tau ceev ceev |
Tsawg - siab dua |
B2 xav tau kev tshaj tawm nruj -weld raws tu qauv |
|
Tom qab -Weld Heat Treatment (PWHT) xav tau |
Yuav tsum muaj kev pabcuam tseem ceeb |
Tsis feem ntau yuav tsum tau |
B3 txo kev tsim cov kauj ruam & nqi |
|
Weld muab tub lim compatibility |
ERNiMo-7 (kev xaiv txwv) |
ERNiMo-10 (B3 txuam muab tub lim) |
B3 muab tub lim zoo dua khaws cia corrosion kuj |
|
Fabrication complexity |
Siab |
Nruab nrab |
B2 yuav tsum nruj dua txheej txheem tswj |
Lub taub hau -rau- Lub taub hau Summary: B2 vs B3 hauv HCl
Cov lus hauv qab no muab cov lus qhia dav dav, ntawm -ib - saib kev sib piv thoob plaws txhua yam kev xaiv tseem ceeb.
|
Kev Cai Xaiv |
Hastelloy B2 (UNS N10665) |
Hastelloy B3 (UNS N10675) |
Yeej |
|
UNS npe |
N10665 |
N10675 |
- |
|
ASTM Standard (Pib) |
B619 / B622 |
B619 / B622 |
- |
|
DIN npe |
2.4617 |
2.4600 |
- |
|
Mo Cov ntsiab lus |
26–30% |
27–32% |
B3 (siab dua me ntsis) |
|
HCl tsis kam (ntshiab, ambient) |
Zoo heev |
Zoo heev |
Khi |
|
HCl tsis kam (boiling) |
Zoo |
Zoo heev |
B3 |
|
HCl tsis kam (ntsuas, kub) |
Txwv tsis pub |
Zoo |
B3 |
|
Fe³⁺ contamination kam rau ua |
pluag |
Zoo |
B3 (qhov txiaj ntsig tseem ceeb) |
|
Cu²⁺ contamination kam rau ua |
pluag |
Nruab nrab |
B3 |
|
Thermal stability (HAZ) |
pluag |
Zoo heev |
B3 (qhov txiaj ntsig tseem ceeb) |
|
Weld fabrication yooj yim |
Nyuaj |
Nruab Nrab – Yooj yim |
B3 |
|
PWHT xav tau |
Feem ntau yuav tsum tau |
Feem ntau tsis tas yuav tsum tau |
B3 |
|
Kev tiv thaiv riam- kab tawm tsam |
Tsawg |
Siab |
B3 |
|
Mechanical zog (RT) |
Sib npaug |
Sib npaug |
Khi |
|
Khoom siv (2026, approx.) |
$30-$50/kg |
$35–$55/kg |
B2 (tus nqi qis) |
|
Availability (khoom thoob ntiaj teb) |
Siab |
Nruab nrab-siab |
B2 (me ntsis ntug) |
|
Ntev - lub sij hawm lifecycle tus nqi hauv HCl |
Siab dua (ntau qhov ua tsis tiav) |
Tsawg dua (tsawg dua kev ua tsis tiav) |
B3 |
|
Kev pom zoo tag nrho rau HCl |
Dilute / ntshiab / tswj |
Feem ntau cov kev siv HCl |
B3 yeej feem ntau |
Thaum xaiv Hastelloy B2
Hastelloy B2 tseem yog qhov kev xaiv siv tau hauv cov xwm txheej tshwj xeeb hauv qab no:
|
✅ Xaiv B2 Thaum: ✔ HCl yog dilute (tsawg dua lossis sib npaug li 10%) ntawm qhov kub thiab txias (tsawg dua lossis sib npaug li 60 degree) ✔ Cov kua qaub yog analytically ntshiab nrog<100 ppm iron/copper contamination ✔ Kev sib kis tuaj yeem raug saib xyuas thiab tswj tsis tu ncua ✔ Nyiaj txiag yog qhov kev txwv tsis pub dhau thiab kev pheej hmoo ntawm lub neej raug lees txais ✔ Vuam raug zam (tsis yog- cov khoom tsim khoom tsim) ✔ luv-lub sij hawm, qis- daim ntawv thov kev pabcuam tseem ceeb ✔ Kev hloov cov khoom siv ceev yog qhov tseem ceeb (muaj cov khoom lag luam dav dua) |
❌ Zam B2 Thaum: ✔ HCl kev pabcuam kub siab tshaj 60 degree ✔ Ua haujlwm ntawm lossis ze ntawm qhov kub kub ✔ Fe³⁺ lossis Cu²⁺ kis tau ntau tshaj 200-300 ppm ✔ Kev tsim kho welded yog xav tau (piping, nkoj) ✔ ASME kev ua raws cai lossis kev tshuaj xyuas thib 3 yog qhov yuav tsum tau ua ✔ Cov txheej txheem suav nrog kev caij tsheb kauj vab dav dav ✔ Lub sijhawm ua haujlwm thiab corrosion- cuam tshuam txog kev kaw yog kim |
Thaum xaiv Hastelloy B3
Hastelloy B3 yog qhov kev xaiv zoo tshaj plaws hauv feem ntau ntawm HCl kev pabcuam niaj hnub no:
|
✅ Xaiv B3 Thaum: ✔ Kev pabcuam HCl ntawm txhua qhov kev xav, tshwj xeeb tshaj yog siab dua 10% lossis ntawm qhov kub siab ✔ Ua haujlwm ntawm lossis ze ntawm qhov kub ntawm HCl cov kev daws teeb meem ✔ Cov kab hlau los yog tooj liab muaj paug los yog tsis tuaj yeem tswj tau nruj me ntsis ✔ Welded piping, heat exchangers, reactants, or storage tanks yuav tsum tau ✔ Tshaj tawm -weld heat treatment yog impractical lossis tsis tau teev nyob rau hauv kev tsim ✔ ASME siab hlab ntsha code (Section VIII lossis B31.3 piping) yuav tsum ua raws ✔ High- kev pabcuam tseem ceeb uas qhov kev kaw tsis tau npaj tseg tsis tuaj yeem lees txais ✔ Lub neej ua haujlwm ntev thiab tus nqi qis tshaj ntawm cov tswv cuab yog qhov tseem ceeb ✔ Hydrochloric acid regeneration systems lossis HCl roj scrubbers ✔ Pharmaceutical API synthesis khoom raws li cGMP |
Kev lag luam daim ntawv thov: Qhov twg Txhua Alloy siv
|
Kev lag luam |
Daim ntawv thov |
Pom zoo Alloy |
Qhov Tseem Ceeb |
|
Kev ua tshuaj lom neeg |
HCl synthesis reactors, distillation kab |
B3 |
High temp, concentrated HCl |
|
Hlau Pickling |
Pickling tanks, acid rov qab systems |
B3 |
Fe contamination muaj nyob rau hauv |
|
Roj & Roj |
Zoo acidizing khoom, qaub pab |
B3 |
H2S + HCl kev pabcuam ua ke |
|
Pharmaceuticals |
API reactors, HCl roj scrubbers |
B3 |
cGMP purity + weld kev ncaj ncees |
|
Semiconductor / Electronics |
ntub- cov khoom siv txheej txheem, etchants |
B2 los yog B3 |
Ultra-pure HCl - soj ntsuam kev sib kis |
|
Chlor{0}}alkali Production |
HCl nqus tsev, roj cua txias |
B3 |
Kub concentrated HCl roj |
|
Kev kho dej |
HCl dosing thiab pH tswj |
B2 (kev pabcuam dilute) |
Dilute, txias, huv HCl |
|
Khoom noj & dej haus |
Hydrolysis reactors (protein / starch) |
B3 |
Kub siab, nruj tu cev |
|
R & D / Laboratory |
Lab-scale reactors, test rigs |
B2 (tus nqi-tsav) |
Tswj tej yam kev mob, me me |
Siv tau Standards & Specifications
|
Txuj |
Kev piav qhia |
B2 Muaj feem xyuam |
B3 Muaj feem xyuam |
|
ASTM B 333 3 |
Ni-Mo alloy phaj, ntawv, thiab sawb |
Yog (N10665) |
Yog (N10675) |
|
ASTM B 335 Cov Lus Qhia Tshwj Xeeb |
Ni-Mo alloy pas nrig |
Yog lawm |
Yog lawm |
|
ASTM B619 Cov khoom lag luam |
Welded Ni-Mo alloy yeeb nkab |
Yog lawm |
Yog lawm |
|
ASTM B 622 2 |
Seamless Ni-Mo alloy yeeb nkab thiab raj |
Yog lawm |
Yog lawm |
|
ASTM B626 1 |
Welded Ni-Mo alloy tube |
Yog lawm |
Yog lawm |
|
ASME SB333/SB622 |
ASME sib npaug (kev siv lub nkoj siab) |
Yog lawm |
Yog lawm |
|
ASME B31.3 |
Cov txheej txheem piping code |
Yog lawm |
Yog lawm |
|
TIAB SA 2.4617 |
European lub npe |
Yog (B2) |
N/A |
|
DIN 2.4600 Nws |
European lub npe |
N/A |
Yog (B3) |
|
NACE MR0175 / ISO 15156 |
Kev pabcuam qaub (H2S ib puag ncig) |
Cov xwm txheej |
Cov xwm txheej |
|
EN 10204 3.1 / 3.2 |
Cov ntaub ntawv pov thawj (MTR) |
Muaj |
Muaj |
Cov lus nug nquag nug (FAQ)
Hauvfeem ntau tiag tiag -world HCl daim ntawv thov, yog. B3 tau tsim tshwj xeeb los hais txog B2 qhov tsis muaj zog hauv thermal stability thiab kev tiv thaiv kab mob. Tib qhov xwm txheej uas B2 sib tw yog ambient - kub, dilute, analytically ntshiab HCl kev pab cuam uas tsis muaj vuam - ib tug nqaim txheej xwm uas tsis tshua muaj piav qhia txog cov nroj tsuag tiag tiag.
Tsis yog. Hastelloy B2 feem ntau welded nrogERNiMo-7Filler (AWS A5.11), Hastelloy B3ERNiMo-10(AWS A5.11 / UNS N10362). Siv B2-muab muab tub lim rau B3 lub hauv paus hlau (los yog vice versa) yuav cuam tshuam qhov vuam qhov corrosion kuj. Ib txwm phim muab tub lim rau lub hauv paus alloy specification.
Raws li ntawm nruab nrab-2026, Hastelloy B2 feem ntau yog tus nqi ntawmUSD $30–$50 toj ib kg(phaj / yeeb nkab, EXW) thaum Hastelloy B3 khiavUSD $35–$55 toj ib kgrau cov ntawv sib npaug - kwv yees li 10–15% tus nqi them. Txawm li cas los xij, muab B3 lub neej ua haujlwm zoo tshaj plaws thiab qis qis qis hauv HCl ib puag ncig, qhovtag nrho cov nqi ntawm cov tswv cuab yeej nyiam B3rau feem ntau daim ntawv thov. Ib txwm sib piv tus nqi lifecycle, tsis yog tus nqi khoom siv xwb.
Tsis yog - qhov no yog ib qho ntawm B3 qhov zoo tshaj plaws. Vim nws txhim kho thermal stability thiab tsis kam mus rau Ni4Mo theem nag lossis daus, B3 feem ntau tsis tas yuav PWHT tom qab vuam. B2, los ntawm qhov sib txawv, tej zaum yuav xav tau kev daws teeb meem annealing (ceev quench los ntawm ~ 1066 degree) rau cov ntawv thov kev pabcuam HCl tseem ceeb. Qhov no txo qis B3 lub sijhawm tsim khoom thiab tus nqi.
Ob lub alloys ua tau zoo hauv cov roj HCl qhuav hauv qab lawv qhov kev pabcuam siab tshaj plaws (~ 538℃). Txawm li cas los xij, yog tiasntub HCl roj los yog condensateyog tam sim no - uas qhia txog lub aqueous acid theem - tib corrosion mechanisms siv raws li nyob rau hauv kua HCl kev pab cuam. B3 yog qhov zoo dua rau cov roj HCl ntub dej, tshwj xeeb tshaj yog cov uas muaj cov tshuab ntxhua khaub ncaws, condensers, thiab nqus cov kab.
Tsis yog. Ob leeg B2 thiab B3 yog tsim los rautxo, tsis yog -oxidizing acid ib puag ncig. Lawv muaj kev txwv tsis pub oxidizing acids (xws li nitric acid los yog ferric chloride tov) los yog tov kua qaub ib puag ncig uas muaj oxidizing agents. Rau oxidizing los yog tov -acid kev pab, xav txogHastelloy C276, C22, lossis Alloy 59xwb.
Nyob rau hauv chav tsev kub (25 degree) nrog huv si, dilute HCl (qis dua 10%), ob qho tib si alloys ua tau zoo sib npaug zos thiab corrosion nqi yog negligible (<0.025 mm/year). In this narrow operating window, B2 is a cost-effective choice. As soon as temperature rises above 40°C, concentration exceeds 10%, or contamination enters the picture, B3's advantages become progressively more significant.
Xaus
Hastelloy B2 thiab B3 yog ob lub ntiaj teb no -chav nickel- molybdenum alloys engineered rau hydrochloric acid kuj. Tab sis lawv tsis sib npaug hauv -world HCl kev pabcuam.
Hastelloy B2yog ib qho pov thawj, tus nqi- kev xaiv zoo rau kev tswj nruj, qis - kub, dilute, thiab paug{2}}HCl dawb daim ntawv thov - tshwj xeeb tshaj yog qhov uas vuam tsis koom nrog thiab kev siv nyiaj txiag txwv.
Hastelloy B3yog qhov kev xaiv zoo tshaj plaws rau feem coob ntawm kev lag luam HCl ib puag ncig. Nws cov thermal stability zoo heev, kev tiv thaiv kev sib kis, thiab kev ua haujlwm vuam txhais tau tias tsawg dua kev ua haujlwm, kev pab lub neej ntev dua, thiab txo nqi tag nrho ntawm cov tswv cuab hauv cov nroj tsuag tiag tiag.
Tus nqi 10-15% tus nqi them rau B3 tshaj B2 yog yuav luag ib txwm rov qab los nyob rau hauv thawj xyoo ntawm kev pabcuam los ntawm kev tiv thaiv corrosion tsis ua haujlwm, txo kev txij nkawm downtime, thiab siv lub neej ntev dua.
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Thov ib daim Quote los yog kev sab laj
Peb pab neeg muag khoom technicaltshwj xeeb hauv kev xaiv nickel alloy rau kev pabcuam corrosive. Peb muab Hastelloy B2 thiab B3 nyob rau hauv tag nrho cov khoom cov ntaub ntawv - seamless yeeb nkab, welded yeeb nkab, phaj, ntawv, bar, thiab fittings - nrog tag nrho EN 10204 3.1/3.2 zeb ntawv pov thawj, PMI pov thawj, thiab tib yam - hnub RFQ teb. |
