Tshawb xyuas cov txheej txheem ntawm cov phaj ua pa kub ua ntej, txheeb xyuas qhov teeb meem thiab pom qhov teeb meem to
xa cov phaj kub ua kom sov, thiab txaws cov phaj thiab gasket
flushed impurities xws li av nkos, nplai, thiab lwm yam hauv sab hauv lub tshuab ua kom sov, uas tsis tsuas tuaj yeem txhim kho cov nyhuv ntawm pickling, tab sis kuj txo cov kua qaub noj ntawm pickling
tu cov paib nrog cov cuab yeej siv ntxhua khaub ncaws yooj yim
npaj lub thawv tu tsev thiab npaj tus neeg tu tsev.
tu cov paib dua nrog tus neeg tu tus tshwj xeeb
kuaj pentration, xyuas yog tias muaj cov paib puas
regasketed daim hlau tom qab kuaj
sib sau ua ke thiab ua kom nruj li lub phaj kub hloov mus nrog cov khoom siv zawm
ua siab test.check yog tias cov khoom siv cua sov ua haujlwm nquag
muaj ob lub ntsiab lus uas yuav tsum them nyiaj ua ntej ntxuav
1. qhov kev xaiv ntawm tu tus neeg sawv cev rau phaj kub ua kom sov yog ntxig, uas yog muab faib ua cov inorganic acid thiab organic acid. Inorganic acid feem ntau yog tsim nrog hydrochloric acid thiab nitric acid. Organic acids yog oxalic acid thiab formic acid. Yog tias cov khoom siv nickel-titanium alloy, hydrochloric acid tsis tuaj yeem siv rau kev tu vaj tu tsev, uas yuav corrode cov paib thiab ua kom lub neej ntev ntawm cov khoom siv.Yog hais tias cov qauv sab hauv ntawm cov phaj ua kom sov yog ua kom yooj yim thiab thaj chaw du yog me me, nag lossis daus tsim los ntawm tus neeg saib xyuas tu tsis yooj yim kom tawm.
Cov formic acid yuav siv los ua kom tau txais kev ntxuav zoo tshaj plaws li cas? Tom qab rov ua kev sim, surfactants thiab buffers ntxiv rau cov faus tso kua ua kev tu cev. Lub hom phiaj yog los txo qhov kev puas tsuaj ntawm tus neeg saib xyuas kev ntxuav tu rau lub phaj, thiab cov nyhuv yog pom tseeb dua. Kev ntsuam xyuas pom tau hais tias cov faus cov kua qaub tsis tuaj yeem tsuas yog ntxuav cov av tsis huv tab sis kuj txo qis cov khoom puas.
2. Thaum khaws, xyuam xim rau qhov kub. Qhov kub ntau dhau yuav ua rau hnyav dua qhov kev xeb ntawm' s daim hlau los ntawm de. Feem ntau, sov yog 60 degrees Celsius.
Pickling tov teeb tsa: cov kua qaub ua kua 81%, dej 17%, surfactant 0.8%, tsis 1.2% rau kev teeb tsa, raws li cov qauv no rau kev ntxuav, cov nyhuv yog qhov zoo heev.
Kev tu yuav tsum yog kev sib xyaw ntawm cov kev hloov pauv thiab cov nyom thiab cov ncig mus ncig, ua ntej so rau 2h, thiab kev tu mus ncig rau 3-4h, kev coj mus kuaj thaum lub sijhawm ua kev tu kom txog thaum kawg ntawm cov tshuaj tiv thaiv pickling.
Tom qab cov nplai thiab cov hlau oxides ntawm cov pa taws ua kom sov tau yaj, kev kho mob passivation yuav tsum tau, vim tias cov hlau tshiab yuav tshwm sim tom qab xaiv, uas yooj yim rau corrode rau lub sijhawm no, yog li kev kho mob passivation yuav tsum tau ua
