Cov qauv kev xeem dav dav thiab cov ntawv ua piv txwv tau qhia txog qhov tseem ceeb thiab kev lag luam zoo ntawm cov roj titensers hauv lub zog cog cov condensers. Los ntawm kev pom kev lag luam, piv txwv li, 1000mW condenser nucare betal chav nyob rau hauv japan xyoo 1983 yuav tsum muaj kwv yees li 50,000 tus tsim lub neej ntawm 40 xyoo. Nyob rau lub sijhawm no, Txhuas-Tooj-Tooj-Tooj Ntxig leaked ib qho nruab nrab ntawm 10 leeg ib xyoos, thaum titanium hlab uas tsis muaj xau. Txawm li cas los xij, cov ntaub ntawv thov ntawm titanium alloy hlab nyob rau hauv lub hwj chim nroj tsuag tsis tau caij nkoj nkaus, thiab ob peb nias cov nyom nyob twj ywm, raws li hauv qab no:
Corrosion teeb meem
Hauv cov ntug dej hiav txwv fais fab ntoo, cov dej hiav txwv feem ntau siv los ua cov dej txias rau cov condensers. Dej hiav txwv yog nplua nuj nyob rau hauv cov av qeeg, tau hais tias tseem ceeb, cov tsiaj muaj sia, thiab ntau yam khoom muaj xeb. Qhov teeb meem no yog ntau dua nyuaj thiab loj hauv chaw nres tsheb brackish qhov twg uas dej hiav txwv thiab dej tso zis tso kua dej. Tooj liab Alloy Leeg, raug rau cov mob hnyav no, yog corrosion (suav nrog corrosion (xws li corrosion), yaig, thiab kev nyuaj siab corrosion. Titanium alloy hlab, nrog lawv zoo heev corrosion tsis kam, zoo tiv thaiv dej hiav txwv los ntawm condenser corrosion. Txawm li cas los xij, tsis zoo li Copy alloy Leeg, Titanium alloy hlab, yog ib qho kev loj hlob ntawm cov tshuaj lom neeg ntawm lawv cov chaw, tsim lub hauv paus rau marine. Cov kab mob marine loj uas txuas rau sab hauv phab ntsa ntawm titanium hlab tuaj yeem cuam tshuam rau kev cuam tshuam kub thiab, nyob rau hauv lem, txo cov condenser zoo. Yog li ntawd, hluav taws xob nroj tsuag siv titanium alloy Leeg yuav tsum tau nruab nrog cov khoom muaj sia txuas ntxiv mus rau sab hauv phab ntsa sab hauv.
Qhov teeb meem nruab nrab ntawm hydrogen
Txawm hais tias titanium cov ntaub ntawv ib ntom zaj duab xis ntawm nws sab, muab cov xov xwm corrosive zoo heev rau hydrogen thiab yooj yim nqus nws. Qhov kev ua haujlwm hydrogen tshem tawm ntawm chav sov, tab sis tus nqi ntawm hydrogen nqus cov nrawm nrawm (piv txwv li, 100 degree). Cov khoom solubility txwv ntawm hydrogen hauv titanium yog tsawg kawg nkaus, kwv yees li 20 ppm. Thaum qhov kev txwv no tau dhau lawm, cov dej (tih₂) yuav daus ntawm lub titanium nto. Raws li cov ntsiab lus hydride ntawm Titanium nto nce ntxiv, muaj zog ntawm titanium txo cov khoom siv me me thiab kev pabcuam lub neej ntawm titanium hlab.
Tsis tas li ntawd, thaum retrofit ntawm cov khoom qub, yog tias tubsibrees yog ua los ntawm titanium, cathodic kev tiv thaiv yog qhov yuav tsum tau los tiv thaiv cov corrosion electrochemical. Piv txwv li, cov condensers ntawm Hitachi cov nroj tsuag fais fab siv dej hiav txwv txias, nrog titanium hlab thiab copper alloy daim hlau siv ua ke. Thaum muaj kev tiv thaiv muaj peev xwm nyob hauv qab 0.75 v (SCE), hydrogen kev nqus tau tshwm sim ntawm qhov hluav taws xob xaus ntawm lub titanium hlab, nrog hydrogen qib ncav cuag 650 ppm tom qab ib xyoos ua haujlwm. Txawm li cas los xij, thaum muaj peev xwm tswj tau nyob rau hauv thaj tsam 0.5-0.75 v (SCE), titanium tsis nqus hydrogen ntawm chav tsev kub.
Kev co teeb meem
Qhov zoo tshaj corrosion tsis kam ntawm titanium cov condensers muaj kev tiv thaiv los ntawm kev tiv thaiv corrosion thiab to, tab sis kev co ua rau lwm qhov kev nyab xeeb loj. Thaum lub sij hawm tiag tiag cog ua haujlwm, titanium hlab tuaj yeem puas los ntawm kev co.
Txhawm rau tiv thaiv cov tub sab titanium, cov kev txiav txim siab baffle tsim nyog yuav tsum tau txiav txim siab precisely txiav txim siab thaum titanium condenser tsim khoom kom zoo rau kev nkag mus rau kev co. Rau cov phiaj xwm retrofit uas muaj feem ntau cov khoom qub, nws tseem ceeb tshaj plaws kom ua tib zoo saib puas muaj qhov muaj qhov ruaj khov thiab kev nyab xeeb ntawm cov hlab thaum ua haujlwm.
Hauv cov ntsiab lus, thaum titanium alloy Leeg muaj ntau ntau hauv cov chaw nres tsheb fais fab, teeb meem xws li kev nqus cov khoom siv, thiab kev co tseem yuav tsum ua tib zoo saib. Tsuas yog los ntawm kev nkag siab zoo thiab daws cov teeb meem no tuaj yeem ua qhov zoo ntawm titanium alloy hlab yuav tag nrho siv thiab kev nyab xeeb ntawm cov chaw nres tsheb fais fab tau txhim kho.
Lub tuam txhab khav ua cov khoom lag luam hauv tsev titanium ua ntau lawm, nrog rau:
German-imported precision titanium raj ntau lawm kab (txhua xyoo muaj peev xwm ntau lawm: 30,000 tons);
Japanese-technology technology tentanium ntawv ci rolling kab (thinnest rau 6μm);
Qoos motated titanium qws txuas ntxiv mus rau kab extrusion;
Ntse titanium phaj thiab sawb fining;
MES system ua noj digital tswj thiab kev tswj hwm ntawm tag nrho cov txheej txheem ntau lawm, ua tiav cov khoom lag luam seem ntawm ± 0.01M.
