1. Dab tsi yog qhov tseem ceeb txawv ntawm Ni200 (tsis yog tshaj plaws Ni2200) thiab yog vim li cas no tseem ceeb tshaj plaws rau siab- qhov kev siv kub?
Qhov tseem ceeb sib txawv nyob hauv lawv cov ntsiab lus carbon, uas yog ib qho tseem ceeb rau kev pabcuam kub siab tshaj 315℃(600℃f).
Ni200 (N4 / UN tsis muaj N02200): Qhov no yog kev lag luam ntshiab (99.6% min) npib tsib) npib nyiaj ntau tshaj plaws ntawm 0.15%. Thaum qhov no yog qhov zoo rau ntau qhov chaw muaj kev nyab xeeb, nws dhau los ua lub luag haujlwm ntawm qhov kub.
NI201 (N6 / UN tsis muaj N02201): Qhov no yog qhov qis dua {qib ntawm cov qib siab npib tsib xee, nrog cov ntsiab lus carbon ntau kawg ntawm 0.02%.
Vim li cas qhov no yog qhov tseem ceeb rau high - kub kev pab:
Thaum nce qhov kub siab (saum toj ~ 315℃/ 600℃f), carbon hauv npib tsib xee ua txawb. Hauv Ni200, cov pa roj carbon ntau yuav ua rau muaj nag los ntawm cov ciaj ciam av uas yog nkig, intergranular network ntawm Nickel Carbide (Ni₃c). Qhov tshwm sim no, hu ua graphitization lossis intergrani embrittlement, txo qis cov khoom siv ductility thiab kev cuam tshuam nyuaj, ua rau nws raug kev tawg tau nyob rau hauv kev ntxhov siab.
NI201, nrog nws cov ultra - Cov ntsiab lus muaj roj carbon qis, yog zoo li tsis muaj tshuaj tiv thaiv kab mob no ntawm embrittlementlement. Yog li ntawd, rau cov txheej txheem sib xyaw ua ke, cov nrawm, lossis bar Tshuag uas yuav siv rau hauv qhov chaw siab, ni201 yog qhov yuav tsum tau xaiv thiab nyab xeeb. Ni200 yuav tsum tau txwv rau corrosion kev pabcuam ntawm qhov kub qis dua.
2. Hauv kev lag luam ua kev lag luam, muaj dab tsi tshwj xeeb kev xaiv ntawm cov ntshiab npib tsib xee?
Ntshiab Nickel qhov kev tiv thaiv zoo heev yog qhov tshwj xeeb rau qee qhov chaw uas hlau tsis muaj zog yuav swb sai. Nws yog qhov kev xaiv premier rau:
Caustic Alkalies (sodium & Potassium hydroxide): Naoh) thiab feuslic potash (koh), txawm tias nyob rau hauv lub xeev kub thiab hauv Molten States. Stainless cov hlau yog raug rau C Ciajtic kev ntxhov siab corrosion thiab dav dav. Nickel tuav tau siv rau agitator sharafts, valve stalts, thiab fasteners hauv caustic evapators thiab tuav tshuab.
Halogen (Fluorine, Chlorine, Bromine): Nickel pom tias zoo heev rau cov fluorine thiab chlorine roj mus txog rau qee qhov kub, ua kom haum rau valve thiab twj tso kua rau hauv cov kev pabcuam no.
Nruab nruab nrab thiab alkaline ntsev daws teeb: Nws ua tau zoo nyob rau hauv ntau tsis - oxidizing cov ntsev.
Txo cov cua nab kuab thiab cov acids: nws muaj zoo ua rau hydrochloric thiab sulfuric acids hauv deagerated, dilute, thiab huab cua txias. Txawm li cas los xij, nws tsis haum rau oxidizing cov kua qaub zoo li nitric acid.
Kev xaiv yog qhov tseeb: Thaum thawj qhov kev hem thawj yog qhov kub, feeb rau ntawm lub neej zoo nkauj lossis lub npe tsis zoo rau lub neej zoo thiab cov khoom siv uas txhim khu kev qha thiab tshaj plaws.
3. Dab tsi yog qhov tseem ceeb ntawm lub cev nqaij daim tawv thiab cov kws kho tshuab ntawm cov neeg ntshiab npib uas ua rau nws haum rau cov khoom siv hluav taws xob nrog hluav taws xob?
Tshaj Corrosion Kuj, Npib Npib Nickel muaj ib qho teeb meem ntawm lub cev uas ua rau nws tsis tseem ceeb hauv hluav taws xob thiab kev tsim khoom lag luam thiab ua lag luam engineering.
Tswj cov khoom nthuav dav hluav taws xob: Nickel muaj qhov tsis tshua muaj qhov tseem ceeb ntawm cov hluav taws xob uas yuav tsum muaj kev ruaj khov thaum cua sov thaum cua sov thiab cua txias.
Siab kub thiab hluav taws xob conductivity: thaum tsis siab li siab tooj liab, Nickel txoj kev xaiv yog qhov tseem ceeb dua li tooj liab hauv qhov chaw tsheb loj.
Cov Khoom Sib Nqus Sib Nqus: Nickel yog Ferromagnetic ntawm chav tsev kub. Qhov no yog cov cuab yeej tseem ceeb rau cov ntawv thov yuav tsum muaj cov yam ntxwv sib nqus.
Ductility zoo thiab lub zog: nws tuaj yeem yooj yim txias - ua haujlwm kom nce ntxiv nws lub zog thiab hardness, tso cai rau cov fabricate ntawm cov chaw sib txawv.
Daim ntawv thov - kev xav:
Cov khoom siv hluav taws xob: Ntawm no, kev sib xyaw ua ke ntawm cov hluav taws xob zoo, zoo heev solderability, thiab cov ntaub ntawv nthuav tawm uas tuaj yeem sib phim rau lwm cov ntaub ntawv (zoo li Ceramics) yog qhov tseem ceeb) yog qhov tseem ceeb.
Spark yaig (edm) Electrodes: Nickel Bar Tshuag yog zoo tshaj plaws cov khoom siv rau hluav taws xob tawm machining, thiab muab cov khoom siv zoo ua tiav ntawm qhov chaw ua haujlwm.
4. Los ntawm cov kev pom ntawm cov kev pom zoo, cov thawj cov kev sib tw ua cov kab sib tw ua los ntawm lub npib tsib xee?
Ntshiab Nickel yog cov khoom siv tawv, cov gassmy uas ua haujlwm - hashens sai sai, nthuav qhia cov kev sib tw tshwj xeeb thaum lub sijhawm sib tw.
Machining:
Kev sib tw: Nws yog qhia tseeb rau kev ua haujlwm ntawm Gummy thiab nquag tsim tsa ntawm cov cuab yeej txiav ntug, ua rau qhov tsis zoo saum npoo thiab twj tsis ua haujlwm.
Kev daws:
Siv cov ntse, zoo - rake cuab yeej nrog cov nplaim hluav taws xob polished.
Ua haujlwm hnyav, kev txiav txuas ntxiv mus ua kom cov cuab yeej txiav hauv qab cov haujlwm - Hardened saum npoo av los ntawm cov dhau dhau los.
Siv cov tshuab loj heev, nruj thiab txaus ntws los ntawm cov kua tsim nyog.
Vuam:
Kev sib tw: ntshiab nickel yog qhov ntxim kev kub nyhiab thiab porosity, feem ntau yog vim muaj kev paug thiab leej faj.
Tus txheej txheem:
Kev nyiam huv yog tsis - sib ceg: txhua qhov chaw thiab cov tub lim dej yuav tsum tau ntxhua khaub ncaws, roj, pleev xim, thiab tseem ceeb tshaj plaws, leej faj. Lub xub ntiag ntawm cov leeg sulfur (txawm los ntawm cim xaum) tuaj yeem ua rau muaj kev sib tsoo hnyav.
Muab tub rog hlau: siv ib qho kev sib txuam Nickel muab tus pas nrig (piv txwv li, Erni-1).
Kev tsim qauv sib koom: Siv cov nkauj zoo nkauj dav dav kom them nyiaj rau npib tsib xee kom nruj thiab ua kom muaj kev sib tw weld.
Cov txheej txheem: Siv ib txoj hlua khi hlua khi nrog cov kev tawm tswv yim tsawg dua thiab ua kom muaj kev kub ntxhov ntau dua los tiv thaiv cov weld pas dej los ua kom loj dhau thiab tswj tau.
5. Hauv lub neej kev txheeb xyuas tus nqi rau kev txhawb nqa caustic los ntawm Ni201 Cheebtsam muaj kev lag luam zoo dua li nouce} plhaw lossis stainless hlau lwm yam?
Qhov kev ncaj ncees yog rooted nyob rau hauv lub peev txheej kev cia siab thiab tsis muaj qhov sib luag ntawm cov tawv nqaij uas muaj kev tawm tsam ntau dua lwm cov ntaub ntawv.
Qhov tsis tiav ntawm kev xaiv:
Nickel -} plated steel: lub plating yog ib txheej nyias, yooj yim txheej. Txhua lub pinhole, kos, lossis hnav taw tes ua ib qho chaw rau Galvanic corrosion, sai sai noj ntawm lub hauv paus steel substrate. Qhov no ua rau nquag ua haujlwm, npaj tsis tiav.
Stainless hlau (piv txwv li, 316L): Raug rau Caustic Kev ntxhov siab corrosion (SCC) thiab dav dav corrosion, tshwj xeeb yog cov kev ua kom siab dua thiab kub. Ib tus ncej cracked lossis cov nrawm tuaj yeem ua rau muaj kev puas tsuaj loj.
Tus nqi lus qhia ntawm khoom Ni201 Bar:
Kev tshem tawm ntawm kev puas tsuaj: tsis tseem ceeb zoo li tus agitator ncej ua los ntawm cov khoom ni201 raug tshuaj tiv thaiv kab mob ni201 yog cov tshuaj tiv thaiv kab mob no uas mob plague. Nws muab 100% homogeneous npib tsib xee barrier thoob plaws nws tus ntoo khaub lig- seem.
Kev Pab Cuam Ntxiv Lub Neej: Thaum thawj tus nqi yog siab, ncej ni201 yuav kav tag nrho 20-30 xyoo lub neej ntawm lub Evaporator. Ib qho plated lossis stainless tivthaiv tej zaum yuav xav hloov txhua txhua ob peb xyoos.
Txo kev txij nkawm & downtime: tus nqi ntawm cov kev kaw lus tsis tu ncua hauv kev txuas ntxiv cov txheej txheem tuaj yeem tuaj yeem ua tau ntau lab daus las ib hnub. Kev ntseeg tau ntawm Ni201 tshem tawm qhov kev pheej hmoo no. Tus nqi ntawm ntau yam hloov pauv, suav nrog kev ua haujlwm thiab cov khoom lag luam ploj, ua rau "pheej yig dua cov khoom kim heev hauv lub sijhawm ntev.
Xaus: Rau cov ntsiab lus tseem ceeb hauv kev tiv thaiv kev ua kom nruj Nws tus nqi hwm yog kev pov hwm txoj cai tiv thaiv kev puas tsuaj thiab kev nqis peev ncaj qha hauv cov nroj tsuag loj tshaj plaws thiab cov txiaj ntsig.
