Ntau lawm thiab cov ntawv thov ntawm kev huv (zaub mov qib) stainless hlau yeeb nkab
1. Nto Kev Ntsuam Xyuas Ntawm Cov Yeeb Nkab Steel Hlau Fittings
Ob qho tib si Auger Electron Spectroscopy (AES) thiab X-ray spectroscopy (SPS) cov hau kev no tuaj yeem siv tshuaj rau corrosion tsis kam ntawm sab hauv thiab sab nraud stainless hlau fittings. Kev ntsuas cov cheeb ntawm cov qauv AES yog qhov tsawg heev, uas tuaj yeem tsawg dua 20nm, thiab nws thawj lub luag haujlwm yog kom paub qhov txawv ntawm cov khoom. Kev tsom xam ntawm xps txoj kev yog kwv yees li 10μm, uas haum rau qhia meej cov organic chemistry ntawm cov khoom seem ib sab.
AES thiab XPS detectors yog siv los ua kom lub scanner ntawm saum npoo av thiab polished 316 stainless hlau phaj uas tau raug rau huab cua. Nws tau xaus lus tias feem ntau qhov tob ntawm qhov ntsuas sab saum npoo ntawm cov yeeb nkab steel hlau yog 15nm, thiab cov kev kho mob passivation txheej yog qhia. Muaj pes tsawg leeg, tuab thiab nws cov kev tiv thaiv corrosion, thiab lwm yam.
Raws li cov lus txhais, cov tawv hlau qis muaj cov roj chromium thiab npib tsib xee, thiab lwm yam, feem ntau yog nrog 10.5% chromium, uas muaj zoo corrosion tsis kam. Corrosion tsis kam raws li kev tswj xyuas ntawm cov yam ntxwv ntawm chromium-nplua nuj passivation feem ntau 3-5nm tuab, lossis tuab li 15 txheej ntawm lwg me me. Txheej passivation yog tsim tawm thaum tag nrho cov txheej txheem ntawm cov pa oxidation-txo cov tshuaj tiv thaiv, nyob rau hauv uas chromium thiab hlau yog oxidized los ntawm huab cua. Yog tias txheej uas passivation puas tsuaj, txheej transcents tshiab dua yuav raug tsim tawm sai sai los yog lub hauv paus ntawm lub cell galvanic yuav tsim tawm tam sim ntawd. Stainless hlau daim phiaj yuav muaj kev sib sib zog nqus corrosion thiab kev nyuaj siab corrosion. Lub corrosion tsis kam ntawm cov txheej txheem passivation yog cuam tshuam nrog cov ntsiab lus dej ntawm cov khoom muaj nyob hauv cov phaj stainless hlau. Piv txwv li, cov chromium siab, npib tsib xee, thiab molybdenum txheej ntawm cov txheej txheem passivation txheej thiab corrosion tawm ntawm txheej passivation txheej. Nws kuj yog cuam tshuam nrog kev kho cov hlau hauv cov kav hlau stainless hlau thiab cov ntawv thov ntawm cov tshuaj hydrodynamic.
2. Deg txoj sia ntawm cov xwm txheej ntawm cov yeeb nkab steel hlau fittings
1. Cov txheej txheem them passivation ntawm lub stainless hlau nyob rau hauv lub ci-muaj cov khoom siv yooj yim heev rau kev rhuav tshem, vim muaj lub peev xwm siab oxidation muaj peev xwm ntawm ci-huab cua. Cov ntawv luam tawm txheej ntawm passivation txheej tsuas yog txuas ntxiv corroded los ntawm cov hlau. Nyob rau hauv ntau kis, txheej passivation tsuas yog rhuav tshem hauv ib feem ntawm thaj tsam passivation ntawm ?? cov hlau stainless. Cov nyhuv ntawm kev etching nyob ntawm tiam ntawm cov qhov zoo lossis dents. Lub me-zoo li etching uas tsis nquag kis rau saum npoo ntawm cov khoom siv raw yog hu ua cov pob txha cev. Tus nqi ntawm cov pob corrosion nce nrog nce kub thiab nce nrog nce kev nce siab. Kev daws teeb meem yog siv cov roj carra-tsawg cov pa roj av lossis cov roj av tsawg (xws li 316 litres 304 liv)
2. Thaum tsim khoom lag luam thiab vuam ntawm Austenitic Stainless hlau, lub blunt warping txheej saum npoo ntawm stainless hlau yog yooj yim puas. Thaum lub cua sov sov thaum tsim thiab vuam yog nyob rau hauv cov ntaub ntawv stickitization kub thiab sib xyaw nrog cov roj chromium los ua cov ntawv chromium los ua daim foos chromium CRC R2-3C 6. Hauv qhov no, tus nqi sib txawv ntawm cov pa roj carbon hauv lub chromium tau nyiaj ntau vim yog kev tsim cov chromium carbide ntawm Clestal qoob loo ciam. Raws li qhov tshwm sim, cov ntsiab lus chromium cov ntsiab lus ntawm lub crystal nplej muaj zog nrog cov khoom siv chromium xws li corrosion ntawm micro rechargeable roj teeb. Corrosion tsuas yog saum npoo ntawm lub lead ua lead ua, uas tau nkag siab rau sab hauv los ua cov kev txhim kho corrosion. Heev stainless hlau kav yog ntau qhov tseem ceeb hauv hluav taws xob vuam.
3. Kev ntxhov siab corrosion tawg: nws yog qhov cuam tshuam zoo ntawm cov ntaub ntawv zoo li qub av av thiab kev yaig uas ua rau tawg thiab hlau tshuab tawg paj. Lub ntuj ib puag ncig uas ua rau muaj kev ntxhov siab corrosion thiab kev puas tsuaj feem ntau nyuaj. Nws tsis yog tsuas yog tensile hauv av kev ntxhov siab, tab sis kuj tseem av kev ntxhov siab thiab kev ntxhov siab sab hauv los ntawm kev tsim khoom, hluav taws xob vuam lossis quenching thiab tempering hauv cov ntaub ntawv hlau.
3. Kev sib txheeb ntawm kev kho cov hlau sab hauv thiab sab nraud hlau saum toj thiab corrosion tsis kam ntawm stainless hlau yeeb nkab
Sab hauv thiab sab nraud txheej txheej ntawm stainless hlau yeeb nkab yas (ntau zoo li kev kho tshuaj sib tsoo, uas muaj cov muaj zog corrosion. Lub puab thiab sab nraud txheej muaj cov khoom lag luam zoo, thiab muaj txiaj ntsig zoo heev rau corrosion tsis kam. Tsawg dua cov kua nruab nrab nrog cov npoo av siab khaws cia hauv lub raj, nws zoo dua yog rau kev tu, tshwj xeeb hauv kev lag luam tshuaj.
1. Electrolytic sib tsoo (electrochemical sib tsoo) ntawm sab hauv cov raj roj ntsha roj av, thiab cov kua roj ntsha li qub, thiab cov kua roj ntsha li qub daws cov teeb meem. Nyob rau lub sijhawm no, sab nraud ntawm lub raj yog nqa tawm ob txheej txheem diver, uas yog, qhov hloov pauv ntawm lub stainless hlau passivation passivation txheej (suav nrog cov tuab mucosa). Qhov no yog vim hais tias tus qauv rau kev rhuav tshem thiab ua rau kev ua haujlwm ntawm kev lag luam prorurtions thiab recesses nyob rau sab nraud ntawm sab nraud txheej, thiab anodic oxidation melts. Vim tias cov xwm txheej sib txawv rau zaj duab xis rau zaj duab xis ntawm lub microscopic conven, thiab kev sib txawv ntawm cov khoom siv hlau txuas ntxiv, ua kom muaj kev tiv thaiv cov roj ntsha ua kom loj heev rau saum npoo. Qhov sib txawv hauv cov zaj duab xis ntawm cov yeeb yaj kiab ntawm convex thiab concave cov khoom ua rau muaj kev sib zog ntawm cov kev lag luam sab nraud, thiab tuaj yeem tshaj qhov siab rau ≤0.2μμm. Thiab nyob rau hauv cov nyhuv zoo li no, cov chromium dej cov ntsiab lus ntawm cov kav hlau muaj ntau, thiab cov tshuaj tiv thaiv corrosion ntau dua txheej txheej kho cov txheej txheem txheej txheem kho kom zoo dua qub.
Yuav ua li cas nkag siab qhov zoo ntawm polishing yuav tsum muaj feem cuam tshuam nrog lub sijhawm zais roj teeb hluav taws xob thiab cov khoom siv kub, siv hluav taws xob, thiab lub raj raj hlau nto. Ua tsis tiav rau Master Qhov kev thev naus laus zis no yuav ua rau lub ntsej muag zoo nkauj ntawm cov yeeb nkab. Yog tias txoj kev electrolysis yog qib dhau los, yuav muaj ntau ntawm convex thiab concave qhov chaw, thiab txawm tias txhua tus raj yuav tau them nqi ntau. Qhov zoo tiag tiag yuav tsum yog kev ua haujlwm thiab tus nqi yog qhov tseem ceeb.
2. Sib Tsoo thiab polishing ntawm sab nraud ntawm lub raj: sib tsoo thiab polishing nrog kev sib hloov thiab cov kab sib hloov. Ntawm no, noj teb teb txhua yam sib tsoo ua piv txwv, kev sib tsoo tshuab kuj yooj yim, lub zog thiab kev sib tsoo discs, thiab qib siab sib tsoo ciab. Daim ntaub disc thiab ntaub disc ua los ntawm graded zoo xuab zeb yog polished rov qab thiab sab nraud tuaj yeem ncav cuag ra ≤ 0.2-0.4μ m
Piv nrog electrolytic sib tsoo, tshuab sib tsoo yog siv dav siv vim nws cov khoom siv yooj yim, cov khoom siv tau yooj yim, thiab tsis muaj kev puas tsuaj rau lub raj. Txawm li cas los xij, cov corrosion tsis kam ntawm lub vev xaib txheej yog qhov zoo dua li hluav taws xob.
Qhov loj dua qhov tsis zoo ntawm lub raj-dov-dov-rolled lub raj yog lub zog nyuaj, uas yog, cov txiaj ntsig tawm yog qhov loj heev, thiab nws tsis yog tsim nyog rau flaring thiab dabtsi yog khoov. Nruj me ntsis kev hais lus, nws tsis tau raws li kev lag luam kev lag luam hauv tebchaws, yog li thermosolidification (quenching) yuav tsum tau nqa tawm.
3. Cov roj-tiv thaiv kev ci ntsa iab annealing rauv: muaj ob ntu: ci annealing rauv lub cev lub cev thiab tag nrho cov khoom siv ammonia decomposition.
Ci annaling rauv: tus qauv tseem ceeb muaj ntawm cov xov hluav taws xob muffle muffle, thiab cov hluav taws xob kub nrog cov cua sov tau npaj rau ntawm ob sab thiab hauv qab. Ammonia yaj roj yog siv los ua kev txij nkawm ncu thiab cov dej num ncig dej txias roj. Cov pipes raug rau txoj kev kho cua sov no tsis tas yuav tsum tau pickled thiab cov txheej txheem sab hauv thiab txo qis me me ntawm cov yeeb nkab tshwm sim los ntawm pickling. Vim tias cov kab mob me me yuav ua rau cov yeeb nkab poob luv ntawm cov nplaim dej doorifications ntawm ib puag ncig kev huv huv kav dej. Yog li, xaiv cov huab cua tiv thaiv ci annealing rauv. Hangao Tech Cov Khoom Txawj Ntse Tiv Thaiv Cov Khoom Siv Hluav Taws Xob Hluav Taws Xob Tag nrho koj cov kev xav tau, tsis tsuas yog muaj airtight airtight kev ua tau zoo, tab sis kuj tseem ua haujlwm siab thiab txuag hluav taws xob. Piv nrog tib hom khoom siv, nws tuaj yeem txuag tau 20% -30% ntawm kev siv hluav taws xob.
