1. Q: UNS N02201 (Nickel 201) yog dab tsi, thiab nws muaj pes tsawg leeg txawv ntawm tus qauv Nickel 200 li cas?
A:UNS N02201, feem ntau hu ua Nickel 201 lossis Alloy 201, yog cov khoom lag luam ntshiab wrought nickel alloy nrog tsawg kawg nkaus nickel cov ntsiab lus ntawm99.0%. Nws cov yam ntxwv txhais yog cov ntsiab lus tsis tshua muaj carbon tsawg ntawm0.02% siab tshaj, piv rau Nickel 200 uas tso cai rau 0.15% carbon
.
Tshuaj muaj pes tsawg leeg ntawm UNS N02201:
| Element | Cov ntsiab lus (%) | Qhov tseem ceeb |
|---|---|---|
| Nickel (Ni) | Ntau dua lossis sib npaug rau 99.0 | Lub hauv paus ntsiab lus; muab corrosion kuj |
| Cov pa roj carbon (C) | Tsawg dua los yog sib npaug rau 0.020 | Tsawg carbon tiv thaiv embrittlement ntawm qhov kub thiab txias |
| Hlau (Fe) | Tsawg dua los yog sib npaug li 0.40 | Tswj kom tswj tau purity |
| Manganese (Mn) | Tsawg dua lossis sib npaug li 0.35 | Deoxidizer; txhim kho kev ua haujlwm kub |
| Silicon (Si) | Tsawg dua lossis sib npaug li 0.35 | Txhim kho oxidation tsis kam |
| Copper (Cu) | Tsawg dua lossis sib npaug li 0.25 | Tswj rau tej qhov chaw corrosion |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.010 | Tsawg kom tsis txhob kub tawg |
Qhov tseem ceeb ntawm Nickel 200:
Cov ntsiab lus qis carbon ntawm Nickel 201 muab qhov txiaj ntsig tseem ceeb: nws tshem tawm qhov cuam tshuam raugraphitization. Thaum Nickel 200 raug rau qhov kub thiab txias ntawm572℃F thiab 1112℃F (300-600 degree)rau ncua sij hawm, carbon precipitates li graphite ntawm grain ciam teb, embrittling cov khoom. Nickel 201, nrog nws cov ntsiab lus carbon qis dua 0.02%, zoo li tshem tawm qhov kev pheej hmoo no
. Qhov no ua rau Nickel 201 qhov kev xaiv zoo tshaj plaws rau cov ntawv thov uas muaj qhov kub siab, tshwj xeeb tshaj yog nyob rau hauv pickling thiab tshuaj ua khoom siv.
2. Q: Vim li cas UNS N02201 phaj siv hauv steel pickling kev ua haujlwm, thiab dab tsi ua rau nws haum?
A:UNS N02201 phaj yog dav siv nyob rau hauv steel pickling kev ua hauj lwm -tshwj xeeb tshaj yog nyob rau hauv cov khoom uas lis pickling acids -vim nws tshwj xeeb corrosion kuj nyob rau hauv acidic ib puag ncig ua ke nrog nws thermal stability.
Corrosion Resistance nyob rau hauv Pickling Environments:
Steel pickling feem ntau yuav muaj zog acids xws lisulfuric acid, hydrochloric acid, nitric acid, thiab hydrofluoric acid, feem ntau ua ke. Nickel 201 nthuav qhia
:
Kev tiv thaiv zoo heev rau cov ntxhia acids nyob rau hauv kev txo qis
Kev ua tau zoo hauv cov kua qaub, alkaline, thiab nruab nrab ntsev daws
Qhov zoo tshaj plaws tiv thaiv rau caustic alkalis, txawm nyob rau hauv lub xeev molten
Tiv thaiv kom qhuav chlorine thiab hydrogen chloride gases txog 1022℃F (550 degree)
Daim ntawv thov hauv Pickling Equipment:
Nickel 201 phaj yog siv los tsim cov khoom tseem ceeb hauv cov kab pickling:
| Cheebtsam | Muaj nuj nqi | Vim li cas Nickel 201 |
|---|---|---|
| Pickling Tanks | Muaj acidic pickling daws | Tiv thaiv kom sib xyaw acids; thermal stability |
| Cua sov Coils | Khaws qhov kub ntawm da dej | Zoo thermal conductivity; resists acid nres |
| Immersion Baskets | Tuav cov khoom steel thaum lub sij hawm pickling | Corrosion tsis kam; mechanical zog |
| Recirculation Piping | Circulate pickling acids | Resistant pitting thiab general corrosion |
Kev txiav txim siab kub:
Rau kev ua haujlwm pickling ua haujlwm saum toj no600℃F (315 degree), Nickel 201 yog qhov tseem ceeb. Nws cov ntsiab lus carbon tsawg tiv thaiv embrittlement uas yuav tshwm sim nrog Nickel 200
. Qhov no ua rau Nickel 201 tshwj xeeb muaj txiaj ntsig hauv:
High -kub acid rov qab systems
Regeneration nroj tsuag rau siv pickling acids
Fume tuav cov khoom siv rau cov kab pickling
3. Q: Yuav ua li cas yog UNS N02201 phaj fabricated rau hauv pickling khoom, thiab cov vuam yuav tsum yog dab tsi?
A:Fabrication ntawm UNS N02201 phaj rau hauv cov khoom siv pickling yuav tsum muaj cov txheej txheem tshwj xeeb los tswj cov khoom siv corrosion thiab kev ua haujlwm zoo.
Kev tsim thiab ua haujlwm:
Nickel 201 nthuav tawm cov yam ntxwv txias txias zoo heev. Cov alloy muaj kev ua haujlwm qis dua - hardening npaum li cas stainless hlau, ua rau nws tshwj xeeb tshaj yog haum rau kev ua haujlwm txias txias xws li
:
Khiav:Rau kev tsim lub taub hau tank thiab cylindrical seem
Nyiaj npib:Rau precision Cheebtsam
Kev kos duab sib sib zog nqus:Rau cov duab complex
Rau kev sib sau kub, qhov pom zoo kub ntau yog1200 ° F txog 2250 ° F (650-1230 ° F). Kev tswj qhov kub thiab txias yog qhov tseem ceeb rau kev ua tiav kub malleability
.
Vuam Requirements:
| Parameter | Kev pom zoo |
|---|---|
| Cov txheej txheem | Shielded hlau arc vuam (SMAW), TIG (GTAW), MIG (GMAW), tsis kam vuam |
| Ua ntej- Weld Cleaning | Ua tib zoo degreasing kom tshem tawm cov kab mob sulfur, lead, thiab phosphorus |
| Interpass Temperature | Khaws hauv qab 200℃F (93 degree) kom tsis txhob kub tawg |
Ncej -Kev kho Weld:
Rau qhov zoo tshaj plaws corrosion kuj nyob rau hauv pickling kev pab cuam, post-weld cua sov kev kho mob feem ntau yog ua ntawm1400-1920 ° F (760-1050 ° F)ua raws li qhov txias txias (dej quenching lossis cua txias)
| Filler Hlau | ENi-1 (Nickel 61) rau TIG thiab MIG vuam; Nickel 141 rau npog electrodes |
. Txoj kev kho no:
Dissolves tej precipitated carbides
Restores siab tshaj plaws ductility
Tshem tawm cov kev ntxhov siab seem
Descaling thiab Pickling ntawm Fabricated Cheebtsam:
Nws yuav tsum raug sau tseg tias descaling ntawm Nickel 201 yog qhov nyuaj dua piv rau Hom 304 stainless hlau
. Rau fabricated pickling khoom, tshwj xeeb yuav tsum tau muab rau saum npoo xov kom paub tseeb tias cov khoom ntawm corrosion kuj yog tag nrho pom.
4. Q: Dab tsi yog txheej txheem pickling nws tus kheej rau nickel alloys zoo li UNS N02201, thiab nws txawv li cas ntawm steel pickling?
A:Pickling ntawm npib tsib xee alloys xws li UNS N02201 yog cov txheej txheem tshwj xeeb ntawm kev kho deg tsim los tshem tawm cov nplais oxide tsim thaum ua haujlwm kub lossis kev kho cua sov yam tsis muaj kev puas tsuaj rau lub hauv paus hlau.
Kev sib tw hauv Pickling Nickel Alloys:
Nickel alloys nthuav tawm cov kev sib tw tshwj xeeb piv rau steel pickling:
Oxide scale yog ntau tenaciousthiab nyuaj rau tshem tawm
Risk ntawm intergranular corrosionyog tias siv cov kua qaub ua ke tsis raug
Molybdenum{0}}muaj cov hlauyuav tsum tau cov kua qaub formulations
Pickling Bath Composition rau Nickel Alloys:
Rau npib tsib xee-raws li alloys, pickling da dej feem ntau muaj kev sib xyaw ua ke ntawm cov kua qaub ua kom yaj cov hlau oxides tshwj xeeb. Ib tus neeg sawv cev da dej muaj pes tsawg leeg rau nickel alloy pickling suav nrog
:
| Cheebtsam | Concentration Range | Lub hom phiaj |
|---|---|---|
| Hydrochloric acid | 330-530 ml / L | Dissolves chromium oxides |
| Nitric Acid | 120-200 ml / L | Oxidizes thiab passivates nto |
| Phosphoric Acid | 70-100 ml / L | Dissolute aluminium thiab nickel oxides |
| Acetic acid | 95-135 ml / L | Dissolve molybdenum oxides |
| Ferric Sulfate | 114–206 g/L | Muab ferric ions rau kev tswj oxidation |
Electrolytic Pickling Alternatives:
Kev ua haujlwm niaj hnub no tuaj yeem siv cov txheej txheem electrolytic rau cov nickel alloys. Nruam electrolytic pickling siv alternating tam sim no (AC) tau tsim rau steels, npib tsib xee, superalloys, thiab titanium
. Cov parameter tseem ceeb muaj xws li:
Tam sim no ceev:10-250 A / dm²
Ntau zaus:1-1000 Hz
Da dej kub:68-203 ° F (20-95 ° F)
Lub sijhawm kho:3-60 vib nas this
Abrasive Dej dav hlau Descaling:
Kev tshawb fawb tsis ntev los no tau pom tias muaj qhov ua tausiab -siab abrasive dej dav hlau descalingraws li ib qho kev xaiv rau tshuaj pickling rau nickel alloys
. Txoj kev no muaj qhov zoo:
Hlau poob qis dua 0.5%, ho qis dua tshuaj pickling
Tsis muaj kua qaub pov tsegxav tau kev kho mob
Mechanical zog tsis hloovtom qab kev kho mob
5. Q: Cov ntawv pov thawj zoo thiab cov kev qhia tshwj xeeb twg tswj hwm UNS N02201 phaj rau cov khoom siv pickling?
A:Kev yuav khoom ntawm UNS N02201 phaj rau cov khoom siv pickling yuav tsum tau ua raws li cov qauv thoob ntiaj teb thiab kev kuaj xyuas nruj kom ntseeg tau tias kev ua tau zoo hauv thaj chaw muaj kua qaub.
Thawj Specifications:
| Txuj | Title | Daim ntawv thov |
|---|---|---|
| ASTM B 162 | Standard Specification rau Nickel Phaj, Sheet, thiab Sawb | Kev qhia tshwj xeeb rau UNS N02201 phaj |
| ASME SB-162 | ASME Boiler thiab Pressure Vessel Code version | Kev siv lub nkoj siab |
| TIAB SA 5553 | Aerospace Khoom Specification | Aerospace thiab kev siv tseem ceeb |
| TIAB SA 17750 | German tus qauv rau nickel ntawv / phaj | Cov ntawv thov European |
Mechanical Property Requirements (Annealed Condition):
| Khoom | Kev xav tau |
|---|---|
| Tensile zog | 50-70 ksi (345-483 MPa) |
| Yield zog (0.2% offset) | 12-35 ksi (83-241 MPa) |
| Elongation (hauv 2 nti) | 35–60% |
| Hardness | 75-100 Brinell (kub dov thiab annealed) |
Thaum tshav kub kub kho thiab nto tiav:
Rau kev siv cov khoom siv pickling, lub phaj yuav tsum muab nkag rau hauv lubannealed thiab pickledmob. Cov tshuaj annealing kub ntau yog1400-1920 ° F (760-1050 ° F)ua raws li qhov txias txias
. Pickling tom qab kev kho cua sov tshem tawm cov nplais saum npoo thiab npaj cov khoom rau fabrication.
Cov kev ua pov thawj zoo:
| Kev pov thawj | Lub hom phiaj | Txoj kev |
|---|---|---|
| Mill Test Report (MTR) | Certificate ua raws li ASTM B162 | Cov ntaub ntawv ntsuas cua sov, cov khoom siv kho tshuab |
| Positive Material Identification (PMI) | Txheeb xyuas cov alloy muaj pes tsawg leeg | X-ray fluorescence lossis optical emission |
| Dimensional soj ntsuam | Paub meej tias thickness, dav, ntev | Micrometers, calipers, straightedges |
| Kev tshuaj xyuas qhov muag | Txheeb xyuas qhov chaw tsis xws luag | Cov kws tshuaj ntsuam xyuas raws li kev lag luam tus qauv |
Specifications rau Pickling Service:
Thaum qhia txog UNS N02201 phaj rau cov khoom siv pickling, cov kev xav tau ntxiv yuav suav nrog:
Ntxiv qis carbon pov thawjrau siab -kev pabcuam kub (kom carbon tsawg dua lossis sib npaug li 0.02%)
Qhov yuav tsum tau ua tiav(pickled lossis ci annealed rau kev pabcuam huv)
Kev kuaj ultrasonicrau cov phaj tuab kom pom qhov tsis sib xws
Thib peb-kev soj ntsuam tograu qhov tseem ceeb siab- muaj cov khoom
Los ntawm kev qhia rau ASTM B162 UNS N02201 nrog cov kev xav tau ntxiv tsim nyog, cov neeg yuav khoom xyuas kom meej tias cov phaj npib tsib xee yuav muab cov kev tiv thaiv corrosion, thermal stability, thiab fabricability yuav tsum tau rau cov kev pab cuam txhim khu kev qha hauv steel pickling khoom.
