Vim li cas cov kab mob fluoride ions ua rau tuag taus rau tag nrho cov khoom siv cua sov titanium?

# Dab tsi yog qhov ua rau tuag ntawm tag nrho cov khoom siv titanium cua sov tube vim muaj cov tshuaj fluoride ions? Tus kheej- kho TiO₂ passivation zaj duab xis yog lub hauv paus txheej txheem uas Qib 2 ntshiab titanium cua sov raj tiv thaiv chloride thiab qaug zog alkali yaig nyob rau hauv fermentation rhiav. Txawm li cas los xij, txawm tias cov kab mob fluoride ions yuav tshem tawm cov txheej txheem tiv thaiv no tag nrho, ua rau muaj kev cuam tshuam tsis zoo ntawm corrosion. Kev ua haujlwm corrosion ntawm plaub cov khoom siv cua sov yog muab piv rau hauv cov lus hauv qab no thaum lawv raug cov kab mob fluoride ions.|Cua sov Tube Hom|Reaction nrog Trace Fluoride (Tsawg dua lossis sib npaug rau 1ppb)|Ntoj Kev puas tsuaj tshwm sim|Kev pab lub neej poob|Muaj Kev Kho Kom Zoo Dua|| -{{21}--|----|----|----|----|| Qib 2 Titanium|Nkauj kho siab|Milky dawb matte etching thoob lub raj phab ntsa|70%–90% shortened kev pab cuam voj voog|Tsuas yog offline txhim kho passivation rau cov pa phem me ntsis|| 316 Stainless Hlau|qeeb hauv zos pitting corrosion|Scattered me me xeb pits ntawm welds|30% luv luv kev pab cuam lub voj voog|Ntxiv weld passivation thiab chloride tswj|| Quartz Tube|Tsis muaj tshuaj tiv thaiv|Smooth nto tsis muaj kab|Zero kev pab cuam lub neej poob|Kev siv ruaj khov mus ntev yam tsis muaj kev saib xyuas ntxiv|| PFA Coated rhaub|Khaub thuas txheej o|Me nto dullness tsis muaj substrate raug|10%–20% shortened kev pab cuam voj voog|Nce lim hloov zaus|Titanium dioxide passivation zaj duab xis, cov tub ntxhais tiv thaiv corrosion barrier ntawm titanium raj, tsis tuaj yeem tiv taus fluoride yaig nyob rau hauv ib qho kev ua haujlwm kub. The dense protective film is completely dissolved when fluoride ions combine with titanium oxide to produce soluble titanium fluoride compounds. Cov kab lis kev cai nruab nrab yog hu ncaj qha los ntawm cov hlau titanium tshiab tom qab cov yeeb yaj kiab puas lawm, ua rau homogenous electrochemical corrosion uas txuas mus thoob plaws tag nrho cov raj saum npoo es tsis nyob hauv thaj chaw hauv cheeb tsam. Fluoride corrosion ntawm titanium yog ib yam, uas ua rau ib tug tsis sib xws ntawm cov phab ntsa thickness, nyob rau hauv sib piv rau stainless hlau, uas tsuas yog tsim nyob rau hauv lub zos pitting. Cov txheej txheem no tsis tsim ib qho kev ceeb toom ntxov ntxov thaum lub sij hawm saib xyuas txhua hnub. Fluoride concentrations tsawg li 1 ppb nyob rau hauv cov dej ntxuav los yog nruab nrab yuav tsub kom raws li ib tug tshwm sim ntawm rov qab CIP cycles. Cov me me fluoride residues yuav nkag mus rau hauv lub voj voog fermentation los ntawm cov kav dej xau lossis kev ua haujlwm tsis raug yog tias lub Hoobkas cov khoom siv raw khoom tuav tuav cov tshuaj fluoride uas tsis muaj kev sib cais. Ib txheej txheej dawb etching yuav pom tseeb ntawm lub raj nplaim tom qab ib mus rau ob lub hlis ntawm kev ncig mus tas li. Thaum lub sijhawm no, cov dej ntws ntawm cov pa oxygen tuaj yeem ua rau qeeb qeeb qeeb, tab sis nws tsis tuaj yeem rov qab ua tiav cov yeeb yaj kiab ua tiav. Lub raj ntim yog raug rau los ntawm phab ntsa to thaum twg los tau thaum lub phab ntsa thickness thinning tshaj 0.1 hli. Lub hauv paus yog vim li cas rau kev xaiv titanium cua sov raj hauv GMP sterile biopharmaceutical factories yog lawv xoom hnyav hlau nag kom zoo dua. Txawm li cas los xij, lub hauv paus ntsiab lus yog kom ua tiav xoom fluoride raug. Txhawm rau txiav tawm cov cua sov thiab pub mis thaum kuaj pom cov tshuaj fluoride, cov lag luam uas siv cov khoom siv titanium yuav tsum tsim kom muaj kev ywj pheej tsis muaj fluorine-dawb raw khoom noj cov kav dej, nruab ob lub tshuab sib txuas, thiab siv cov khoom siv fluoride hauv online. Yuav kom ntes tau cov fluoride etching thaum ntxov, cov kws kho mob yuav tsum ua kom tag nrho lub ntsej muag scanning txhua lub hlis twg. The production line must cease operation in order to thoroughly flush the entire tank and conduit when continuous low potential values ​​are observed. Titanium cua sov tubs yuav ua rau lawv cov khoom tiv thaiv corrosion thiab ua rau muaj kev hloov khoom siv ntau heev thiab qhov nruab nrab scrapping poob thaum tsis muaj kev ntsuas fluoride cais tawm.