Qhov sib txawv ntawm Peb Hom Kev Ntsuas Tshuaj Ntsev (NSS, AASS, CASS)

Hauv kev tsim khoom lag luam thiab cov ntaub ntawv tshawb fawb tshawb fawb, kev kuaj ntsev ntsev yog ib txoj hauv kev siv rau kev ntsuam xyuas corrosion ceev. Los ntawm simulating marine los yog ntsev-laden av noo huab cua, nws muaj peev xwm soj ntsuam zoo corrosion kuj ntawm cov ntaub ntawv hlau thiab lawv nto tiv thaiv txheej nyob rau hauv ib tug luv luv lub sij hawm sim, yog li muab cov ntaub ntawv tseem ceeb rau kev tswj cov khoom zoo thiab cov txheej txheem optimization.

Raws li cov kws tshaj lij kev tsim khoom ntawm cov khoom siv ntsuas ib puag ncig, BOTO GROUP tau cog lus los muab cov khoom siv ntsuas kub ntawm kev sib tw tsheb kauj vab los pab cov neeg siv khoom nkag siab tob txog lawv cov khoom ua haujlwm nyob rau hauv qhov kub thiab txias ib puag ncig, yog li ua kom muaj kev ntseeg siab thiab kev nyab xeeb ntawm lawv cov khoom.

Kev ua haujlwm tseem ceeb ntawm kev ntsuas ntsev ntsev yog muab cov qauv hlau tso rau hauv ib puag ncig ntsev tsuag uas tsim los ntawm cov tshuaj sodium chloride (cov tshuaj tsuag ntsev ntsev). Los ntawm kev tswj hwm qhov tseem ceeb tsis xws li ib puag ncig qhov kub thiab txias, av noo, thiab ntsev txau tus nqi, qhov kev ntsuam xyuas ua tiav sai sai ntawm cov khoom siv hluav taws xob nyob rau hauv cov xwm txheej corrosive. Txoj kev no ua tau zoo nthuav tawm qhov tsis xws luag hauv cov khoom siv matrix lossis cov txheej txheem tiv thaiv saum npoo (xws li cov txheej thiab plating), ua rau muaj qhov tshwm sim ntawm corrosion uas yuav siv sij hawm ntau xyoo los tshwm sim nyob rau hauv ib puag ncig ntuj rau hauv lub sij hawm soj ntsuam.

Niaj hnub no, kev ntsuas tshuaj ntsev tau dhau los ua tus qauv ntsuas thoob ntiaj teb rau kev ntsuas kev tiv thaiv corrosion ntawm cov ntaub ntawv hlau, thiab tau siv dav hauv ntau yam tseem ceeb xws li kev lag luam tsheb, aerospace, electronics, kev tsim kho, thiab cov khoom siv hauv tsev. Qhov kev sim no tuaj yeem tsis tsuas yog siv los txheeb xyuas qhov ua tau zoo ntawm ntau yam txheej txheem tiv thaiv saum npoo tab sis kuj los sib piv qhov sib txawv ntawm kev ua haujlwm ntawm cov khoom sib txawv raws li tib yam corrosive, yog li muab kev txiav txim siab txhim khu kev qha- ua lub hauv paus rau cov khoom tsim qauv, xaiv cov khoom siv, thiab kev txhim kho cov txheej txheem ntau lawm.

Raws li lub teb chaws tus qauv GB / T 10125-2021, cov pa ntsev tsuag tshuaj tsuag feem ntau suav nrog peb pawg hauv qab no, uas txawv hauv lawv cov qauv kev sim:

Neutral Salt Spray Test (NSS) yog qhov yooj yim tshaj plaws ntsev tsuag tshuaj ntsuam txoj kev. Cov txheej txheem cuam tshuam nrog atomizing 5% nruab nrab sodium chloride tov nyob rau hauv kev tswj xyuas los tsim kom muaj ib qho chaw ntsev ntsev. Txoj kev no feem ntau yog siv los simulate cov ntsev zoo tib yam - muaj cov huab cua puag ncig; nws cov corrosiveness yog qhov me me, thiab tam sim no nws yog qhov kev siv tshuaj ntsev ntau tshaj plaws.

Acetic Acid Salt Spray Test (AASS) suav nrog ntxiv glacial acetic acid rau 5% sodium chloride tov, ua rau cov kua qaub acidic. Cov kua qaub ib puag ncig tsim los ntawm cov qauv no yog qhov hnyav dua li qhov ntsuas nruab nrab ntawm cov ntsev ntsev, ua kom nrawm nrawm ntawm cov txheej txheem corrosion. Yog li, nws yog qhov tsim nyog rau kev sim cov xwm txheej uas xav tau kev ua haujlwm zoo dua corrosion.

Copper Accelerated Acetic Acid Salt Spray Test (CASS) yog ua raws li acetic acid ntsev tsuag tshuaj ntsuam xyuas, nrog rau kev suav nrog ntxiv ntawm tooj liab chloride los tsim ib qho chaw kuaj corrosive ntau dua. Txoj kev no muaj qhov ceev tshaj plaws corrosion thiab feem ntau yog siv rau siab - qauv kev pov thawj zoo los yog kev sim uas yuav tsum tau sib piv sai.

Peb txoj kev no yog ua tiav qhov kev ntsuam xyuas corrosion, xws li los ntawm kev ntsuam xyuas cov qauv mus rau kev nrawm nrawm, thiab tuaj yeem ua tau raws li cov kev xav tau sib txawv ntawm cov khoom sib txawv thiab cov khoom siv siv lub tshuab tshuaj tsuag ntsev.

Qhov kev ntseeg siab ntawm cov tshuaj ntsev tsuag cov txiaj ntsig tau txais txiaj ntsig yog nyob ntawm kev ua raws li cov lus qhia tshwj xeeb ntawm kev npaj tshuaj. Txhua hom kev ntsuas tshuaj ntsev yuav tsum tau siv cov dej distilled lossis deionized nrog cov conductivity tsis tshaj 20 μS / cm. Sodium chloride yog tom qab ntawd yaj hauv cov dej no ntawm 25℃± 2℃los tsim kev daws teeb meem nrog 50 g / L ± 5 g / L. Cov kev cai purity rau sodium chloride yog nruj: tag nrho cov ntsiab lus hnyav hlau yuav tsum tsawg dua 0.005%, cov ntsiab lus sodium iodide yuav tsum tsis pub tshaj 0.1%, thiab tag nrho cov ntsiab lus impurity yuav tsum tau tswj tsis pub dhau 0.5%.

Rau kev ntsuas nruab nrab ntsev tsuag, cov tshuaj pH yuav tsum tau hloov kho kom ntseeg tau tias cov kua tshuaj txau muaj pH ntawm 6.5 thiab 7.2 ntawm 25℃± 2 degree. Ib qho tshwj xeeb electrode tsim los rau cov tshuaj tsis muaj zog sodium chloride yuav tsum tau siv los xyuas kom meej pH nyeem ntawv.

Rau kev ntsuam xyuas acetic acid ntsev, ib qho tsim nyog ntawm glacial acetic acid yog ntxiv rau kev daws kom ruaj khov pH ntawm cov kua sau hauv cov kua qaub ntawm 3.1-3.3. Qhov no acidic ib puag ncig ua rau kom muaj zog corrosion, ua kom cov txheej txheem kuaj tau zoo.

Kev daws rau tooj liab- nrawm nrawm acetic acid ntsev tshuaj tsuag tshuaj yog npaj los ntawm kev ntxiv 0.26 g / L ± 0.02 g / L ntawm tooj liab (II) chloride dihydrate rau acetic acid ntsev tov mis kom ntxiv txhim kho nws cov corrosiveness. Lub hom phiaj ntawm kev hloov pH thiab txoj kev yog tib yam li kev sim tshuaj acetic acid ntsev, tswj pH ntawm 3.1 thiab 3.3.

Cov txheej txheem kev npaj daws teeb meem nruj no yog lub hauv paus ntawm kev ua kom muaj kev sib piv thiab rov ua dua tshiab ntawm cov ntsev tsuag tshuaj ntsuam xyuas thiab yog lub hauv paus rau kev tsim qauv ntawm txoj kev sim no. Lub tshuab ntsuas tshuaj ntsev ua lub luag haujlwm tseem ceeb hauv cov txheej txheem no.

Qhov nruab nrab ntsev tshuaj tsuag yog qhov kev sim siv dav tshaj plaws, tsim nyog rau kev sim cov hlau thiab cov hlau, ntau yam hlau coatings (xws li anodic lossis cathodic), cov coatings hloov dua siab tshiab, anodic oxidation txheej, thiab cov organic coatings adhered rau hlau substrates. Txoj kev no muab cov qauv simulated corrosive ib puag ncig thiab ua tau raws li kev ntsuas kev tiv thaiv corrosion zoo ntawm cov khoom siv feem ntau.

Kev kuaj tshuaj acetic acid ntsev feem ntau yog siv los ntsuas qhov kev tiv thaiv corrosion ntawm tooj liab, npib tsib xee, chromium, los yog npib tsib xee-chromium hniav txheej, thiab kuj yog feem ntau siv los kuaj anodic oxidation films thiab organic coatings ntawm txhuas. Lub acidic ib puag ncig nws tsim ua kom muaj zog corrosive, yog li nthuav tawm qhov tsis xws luag hauv cov ntaub ntawv no sai dua nyob rau hauv cov xwm txheej hnyav.

Cov tooj liab -accelerated acetic acid ntsev spray test yog siv tau rau cov khoom tseem ceeb tib yam li cov tshuaj acetic acid ntsev ntsev, tab sis nws cov corrosiveness yog hnyav dua, thiab kev ntsuam xyuas efficiency siab dua. Txoj kev no yog qhov tshwj xeeb tshaj yog tsim nyog rau kev tshawb xyuas sai ntawm cov khoom uas yuav tsum tau muaj kev tiv thaiv nruj, xws li qib siab - cov khoom siv tsheb loj thiab siab - cov khoom siv kho kom zoo nkauj sab nraum zoov.

Qhov tseem ceeb ntawm kev ntsuam xyuas ntsev tsuag tsis yog tsuas yog nyob rau hauv nws lub peev xwm los ua kom cov txheej txheem corrosion, tab sis kuj nyob rau hauv nws cov qib siab ntawm standardization thiab repeatability ntawm cov txiaj ntsig. Kev tswj xyuas meej ntawm txhua qhov ntsuas ntsuas tso cai rau kev sib piv ntawm cov ntaub ntawv xeem tau ua nyob rau lub sijhawm sib txawv thiab qhov chaw, muab lub hauv paus ruaj khov thiab txhim khu kev qha rau kev tswj kom zoo thiab kev ua tau zoo ntawm cov khoom hauv cov khoom siv. BOTO nruj me ntsis ua raws li tag nrho cov qauv tsim nyog hauv kev tsim khoom ntawm nws cov cuab yeej kuaj kev ntseeg tau, kom ntseeg tau tias txhua lub tshuab tshuaj ntsev ntsev tawm hauv lub Hoobkas ua tau raws li cov kev cai xeem.

Hauv kev tsim khoom tiag tiag thiab kev tshawb fawb thiab kev tsim kho, kev kuaj ntsev ntsev yog siv rau hauv cov hauv qab no:
Kev Tswj Xyuas Zoo: Tsis tu ncua sampling cov khoom thaum lub sij hawm ntau lawm txheej txheem rau ntsev tsuag tshuaj ntsuam xyuas cov khoom zoo sib xws thiab tam sim ntawd txheeb xyuas cov txheej txheem tsis xws luag los yog cov khoom muaj teeb meem.
Kev tsim khoom: Siv cov tshuaj tsuag ntsev los sib piv cov kev tiv thaiv corrosion ntawm cov kev daws teeb meem sib txawv thaum tsim cov ntaub ntawv tshiab lossis cov txheej txheem saum npoo, yog li muab kev qhia txuj ci rau kev xaiv R & D txoj kev.
Kev ntsuam xyuas tus neeg muag khoom: Siv cov txheej txheem ntsuas tshuaj ntsev sib koom ua ke los ntsuas qhov zoo ntawm cov khoom siv lossis cov khoom siv los ntawm cov neeg muag khoom sib txawv, pab txiav txim siab txog kev yuav khoom.
Kev kwv yees lub neej: Correlating ntsev tsuag tshuaj ntsuam xyuas nrog cov ntaub ntawv pov thawj sab nraum zoov corrosion tuaj yeem siv los kwv yees lub neej kev cia siab ntawm cov khoom lag luam hauv ib puag ncig siv tshwj xeeb, muab cov ntaub ntawv siv rau cov khoom tsim kev txhim kho thiab kev tiv thaiv kev txhim kho.

Hauv kev siv cov tswv yim, cov qauv tshuaj ntsev uas tsim nyog yuav tsum raug xaiv raws li qhov chaw ua haujlwm tiag tiag ntawm cov khoom, cov kev cai tshwj xeeb ntawm kev lag luam, thiab cov kev qhia tshwj xeeb. Rau cov ntaub ntawv hlau thiab nto-cov khoom coated, GB/T 10125 yog tus qauv tseem ceeb tshaj plaws hauv kev lag luam. Cov txheej txheem no qhia meej meej txog ntau txoj hauv kev, suav nrog kev ntsuas tshuaj ntsev nruab nrab (NSS), acetic acid ntsev tshuaj tsuag (AASS), thiab tooj liab-accelerated acetic acid ntsev spray test (CASS), uas tsim nyog rau kev sim thiab ntsuas qhov corrosion kuj ntawm ntau yam hlau substrates thiab lawv cov txheej tiv thaiv.

Yog tias koj muaj kev xav tau lossis cov lus nug txog kev ntsuas tshuaj ntsev ntsev lossis lwm yam khoom siv kuaj kev ntseeg tau ib puag ncig, thov koj xav tiv taujtiv tauj peb!