Cov kev cai dav dav rau kev tu tshuaj: tshem tawm cov quav ciab, roj, thiab lwm yam adherents ntawm qhov chaw ntawm lub fittings; tshem tawm cov tawv nqaij oxidized me ntsis thiab xeb me ntsis ntawm qhov chaw ntawm cov khoom siv tooj liab.
Cov tshuaj ntxuav tu tshuaj yog muab los ntawm tus neeg muag khoom ua ntu zus nrog kev lav phib xaub, thiab xyuas kom meej tias cov tshuaj ntxuav tau zoo thiab ib puag ncig zoo. Lub tank rinsing rau cov dej huv yog siv cov txheej txheem ntawm lub tiaj tiaj, thiab yuav tsum muaj cov dej txaus txaus los pab txhawb cov kua roj tawm ntawm cov dej. Txhua kauj ruam tu siv cov txheej txheem-kev ywj pheej tank. Cov tshuaj ntxuav cov khib nyiab pov tseg yuav tsum ua raws li cov cai tiv thaiv ib puag ncig.
Txheej txheem: Kev npaj, tshuaj degreasing, dej kub yaug, pickling thiab brightening, dej yaug, ziab, passivation, dej kub yaug, ziab, ziab.
Tshuaj degreasing: ultrasonic tank rhaub rau boiling, ntxiv degreasing ntsuj plig, boiling rau ntau tshaj 2 feeb; fittings kom tag nrho submerged hauv qab cov kua nto hauv lub tank, kom tsis txhob muaj cua hauv lub raj; immersion txheej txheem, tsawg kawg yog sab laug thiab sab xis tig lub pob tawb ob zaug, kom cov fittings nyob rau hauv kab noj hniav ntawm cov tshuaj yog tas li hloov; tshuaj degreasing kom txog rau thaum qhov chaw ntawm lub fittings yog kiag li ntub los ntawm leej twg; nyob rau txhua lub sij hawm yuav yog lub tank nyob rau saum npoo ntawm cov kua roj floating tshem tawm.
Kev ywg dej kub: cov fittings yuav muab tso rau hauv dej kub ntawm 80 degree dej tank rau 1-2 feeb, tig thiab maj mam nqa lub pob tawb ntau zaus kom tshem tawm cov seem ntawm de-oiling ntsuj plig. Cov dej yuav tsum ntws los txuas ntxiv.
Pickling thiab brightening: Pickling thiab brightening siv cov kev vibration tu khoom; ntxuav nrog abrasive hais rau stainless hlau disc-particle hais; ntxuav ntim raws li qhov sib txawv specifications thiab cov khoom loj txiav txim siab, ib pob tawb rau ob pob tawb; ntxuav cov tshuaj raws li cov qauv yuav tsum tau, tus neeg saib xyuas tu, brightening tus neeg sawv cev 1: 1 piv; sib piv cov tshuaj ntxuav zoo txhua zaus los koom nrog 0.5L; ntxuav lub sij hawm los ntawm tus ntxhua khaub ncaws raws li cov xim ntawm cov khoom los txiav txim siab cov khoom uas qhia cov xim ntawm tus thawj tooj liab los yog dawb dawb xim yog tsim nyog.
Rinsing: tig thiab maj mam nqa lub pob tawb tsis pub tsawg tshaj peb zaug kom ntseeg tau tias qhov chaw ntawm cov yeeb nkab fittings ntxuav cov residue rinsing huv si, drained thiab qhuav tom qab co lub tshuab qhuav.
Passivation: tus neeg sawv cev passivation thiab dej piv ntawm 1:15, dej kub ntawm 60 degree, tsau cov fittings kiag li raus. Lub sij hawm immersion tsis pub tsawg tshaj peb feeb, txhua ib nrab ib feeb tig thiab maj mam nqa lub pob tawb ib zaug, txhua lub pob tawb tsis pub tsawg tshaj peb zaug kom paub meej tias cov tshuaj tiv thaiv txaus.
Cov dej kub immersion: passivation tom qab tso lub pob tawb; muab cov dej kub ntawm txog 80 degree dej kub immersion, passivation ntawm cov residual kua ntxuav; fittings passivation kev kho mob, yog tias nws tsis cuam tshuam rau cov txheej txheem tom ntej lossis fittings siv, chav kawm tshem tawm cov dej kub yaug.
Qhuav: fittings nchuav rau hauv lub tais, qhov cub kom qhuav, kub 100-120 degree , 5-8 feeb.
Kev Kho: Tom qab tshuaj ntxuav cov yeeb nkab fittings tom qab kuaj xyuas, muab tso rau hauv qhov chaw huv si thiab qhuav, ua haujlwm zoo ntawm kev tswj cov plua plav. Tube fittings yuav tsum tau tiv thaiv thaum lub sij hawm thauj mus los thiab yuav tsum tsis txhob deface fittings. Cov yeeb nkab fittings ntim tsis tuaj yeem tiv tauj ncaj qha los ntawm tes, yuav tsum hnav cov hnab looj tes kom huv thiab huv.
Kev lees txais yuav tsum tau: fittings yuav tsum pom cov xim tooj liab liab lossis xim xim dawb tom qab ntxuav tshuaj. Qhov saum npoo yuav tsum ci, yuav tsum tsis muaj oxidized ntawm daim tawv nqaij sab hauv lossis sab nraud. Qhov tshwm sim ua ntej ntim tag nrho kev tshuaj xyuas, kev puas tsuaj loj, deformation, rupture yuav tsum raug tshem tawm; tshuaj ntxuav ntawm qhov chaw ntawm cov yeeb nkab fittings tom qab lub acidity ntawm cov PH ntau yam ntawm cov ntawv xeem, tooj liab fittings yuav tsum tsis muaj. Cov yeeb nkab fittings uas tsis tsim nyog nyob rau hauv kev tshuaj xyuas yog muab tso rau nyias, yuav tsum tau txiav txim los ntawm kev ua.
