Muab piv rau cov txheej txheem xws li plating thiabkho saum npoo, kev tu zoo li yog ib kauj ruam tsis tseem ceeb.Feem ntau ntawm koj yuav tsis xav txog kev tu lub peev uas tsim nyog, rau kev tu tsuas yog siv sijhawm thiab nyiaj txiag xwb.Tab sis qhov tseeb, kev ntxuav yog qhov tseem ceeb rau cov khoom zoo thiab muaj kev cuam tshuam zoo rau cov txheej txheem tom ntej.Nws yog ib qho tsim nyog los tshuaj xyuas cov laj thawj vim li cas kev tu vaj tse tseem ceeb heev.
Ua ntej kev kho cua sov, qhov saum npoo ntawm lub workpiece feem ntau zoo li huv si thiab tsis muaj qhov tsis xws luag ntawm kev kuaj pom.Txawm li cas los xij, hauv cov txheej txheem tom qab kev kho cua sov (xws li nitriding), cov teeb meem tshwm sim los ntawm kev ua kom huv ntawm qhov chaw tsis zoo.Kev rov ua dua ntawm cov khoom tsis raug yog raug nqi ntawm lub sijhawm thiab nyiaj txiag, thiab cov khoom siv tsis raug tuaj yeem rov ua dua nyob rau hauv feem ntau.
Yog tias muaj ib qho teeb meem zoo li no, peb yuav tsum tshawb xyuas qhov ua tau sai li sai tau.Cov cuab yeej siv tshuab thiab cov cuab yeej ua rau yuav tsum tau kuaj xyuas ua ntej: hom khoom, cov duab ntawm qhov chaw, cov txheej txheem nitriding rauv, thiab kev ua tshuab.Yog tias cov xwm txheej no tuaj yeem raug txiav tawm, qhov tsis xws luag feem ntau yog tshwm sim los ntawm qhov pom tsis pom kev cuam tshuam-thaiv txheej txheem ntawm qhov chaw ua haujlwm, uas txhais tau hais tias nws yog qee qhov seem ntawm qhov pom kev huv si uas ua rau muaj qhov tsis xws luag.
Ua ntej kev kho cua sov, ib feem tau ua ntau yam txheej txheem, ua rau muaj kev hloov pauv ntawm qhov chaw.Muaj ob hom kev hloov pauv loj.
Kev hloov kho tshuab: deformation;extrusion;sib tsoo.
Kev hloov tshuaj: phosphate txheej (xws li zinc phosphating los pab hauv kev kos duab);anti-corrosion tebchaw;chlorine, phosphorus lossis sulfur tej zaum yuav muaj nyob rau hauv cov roj lubricating, saponification kua, roj thiab lwm yam additives;nto tawg nrhiav reagent.
Yuav ua li cas ntxuav lub workpiece kom huv si saum npoo?
Feem ntau 95-99% dej nrog 1-5% tu tus neeg saib xyuas yog siv los ntxuav lub workpiece, thiab cov dej zoo yog qhov tseem ceeb heev.Cov impurities hauv dej xws li calcium, magnesium, sodium, potassium, thiab chloride tuaj yeem nyob ntawm qhov chaw ua haujlwm tom qab ziab los ua ib qho kev cuam tshuam, yog li cov dej deionized nrog cov conductivity txog li 50 µS / cm2 yuav tsum tau siv los tiv thaiv. teeb meem thaum ntxuav.
Lub aqueous tu system muaj ob hom ntawm cov khoom: tus neeg saib xyuas lub ntsiab thiab tus neeg sawv cev ntog.
Tus neeg saib xyuas tseem ceeb: Nws muaj cov khoom siv tsis zoo lossis cov organic, xws li alkali, phosphate, silicate, thiab amine.Nws tuaj yeem kho cov pH, muab hluav taws xob conductivity, thiab saponify roj.
Surface active agent: Nws muaj cov khoom siv organic, xws li alkyl benzene sulfonates thiab fatty alcohol ethoxylates, thiab plays lub luag hauj lwm ntawm dissolving thiab dispersing roj thiab rog.
Plaub qhov tseem ceeb ntawm kev ntxuav aqueous yog ntxuav cov kua dej, lub sij hawm ntxuav, ntxuav qhov kub thiab kev ntxuav.
1. Cov kua dej huv
Cov kua dej ntxuav yuav tsum hloov mus rau ib feem (hom khoom), impurities tam sim no thiab tom qabkho saum npoo.
2. Lub sijhawm ntxuav
Lub sij hawm ntxuav yog nyob ntawm hom thiab tus nqi ntawm cov kab mob thiab tej zaum yuav nyob ntawm seb cov kab tu kab li cas thiaj li tsis cuam tshuam rau cov kauj ruam tom ntej.
3. Qhov kub thiab txias
Kev ntxuav kom siab dua yuav txo cov viscosity ntawm cov roj thiab yaj cov roj, ua kom yooj yim dua thiab tshem tawm cov tshuaj no.
4. Txoj kev ntxuav
Cov haujlwm sib txawv tau qhia los ntawm cov khoom siv tu, xws li: tank ncig, dej ntws, txau, thiab ultrasonic.Txoj kev ntxuav yog nyob ntawm hom thiab cov duab ntawm ib feem, kev sib kis thiab muaj sijhawm tu.
Plaub qhov kev txwv no yuav tsum tau hloov kho rau qhov xwm txheej tiag tiag.Cov khoom siv hluav taws xob ntau dua (tus neeg kho tshuab, thermal lossis tshuaj lom neeg) lossis lub sijhawm kho mob ntev dua yuav txhim kho cov nyhuv tu.Tsis tas li ntawd, qhov muaj zog txaus ntawm cov kua dej huv yuav txhim kho cov nyhuv ntxuav ntawm qhov kub thiab txias.
Nws yog ib qho tsim nyog sau cia tias qee qhov ntawm cov kab mob sib kis tau zoo heev thiab tsis tuaj yeem raug tshem tawm los ntawm kev ntxuav.Cov kab mob no feem ntau tsuas yog tshem tawm los ntawm cov txheej txheem xws li kev sib tsoo, sandblasting, thiab pre-oxidation.
Post lub sij hawm: Jun-24-2022