Yuav ua li cas tiv thaiv kev txawv txav pH cov tshuaj nickel plating tov?

Tiv thaiv txawv txav ntawm cov tshuaj Nickel plating daws tau cov qauv kev tsim kho, kev ua haujlwm tu, thiab cov ntsiab lus siv:
Kuv .} kev ua haujlwm ntawm kev daws teeb meem daws teeb meem thiab cov khoom lag luam
{{01. Xaiv cov ntawv ua haujlwm rau lub ntsej muag muaj peev xwm
Acidic plating daws (feem ntau siv):
Cov Qauv Txheej Txheem: Siv acetic acid-sodium acetate khub (ph 4 {{{{{{{{{
Kev npaj kho dua tshiab: Qhia lactic acid-sodium lactate los yog propionic tsis muaj zog (pH 3. 8 ~ 5.6) thiab muaj zog tiv thaiv kev cuam tshuam nrog.
Alkaline plating daws:
Siv cov tshuaj ammonia-ammonium tsis zoo (ph 8 {{{{{{{3.0), nrog sodium citrate / 10.0)
{{02. Tshuav cov concentration ntawm cov ntsev loj thiab txo tus neeg sawv cev
Kom ntseeg tau tias cov qhab nia mevolle ntawm nickel ion (Ni²⁺) rau kev rho tawm suab (h ₂₂₂⁻) yog 1 ~ 3:
{{0 {}} kev soj ntsuam xyuas thiab kho kom meej
{{0 {}} nruab rau hauv PHEEJ NTAWV QHIA NTAU NTAWV
Yuav Tsum Tau Ua Kom Zoo:
Xaiv lub khob muaj hluav taws xob tiv thaiv kom muaj zog acid / alkali (xws li ph elec electrode (xws li kab kom haum
Txuas ntxiv tshuab hluav taws xob: Thaum tus lej pho coj los ntawm cov teeb tsa (acid
Piv txwv tsis yog:
Platting Delting Kev Tawm Ntaus Tus Nqi Lub Cim Lub Tsiab Lub Tswb Thaum Lub Cawv) (sib txawv) rov qab ua haujlwm reagrenation reagent
Acidic plating daws 5.0 ± 0.3 H₂so₄ Tshuaj 10% (Ntim Piv Txwv)
Alkaline Plating Cov Lus 9.0 ± 0.4 Naoh daws 5% (Cov Qauv Ntau)
2.} nrhiav ib tug siab-kev kho cov tshuab ntsuas calibration
Ntsuas cov ntawv siv PHO ntawm cov plating tov kev ua haujlwm txhua 2 teev nrog lub ntsuas xov tooj hauv online}}}}}}}}}}} Yog tias qhov kev ua yuam kev hauv hluav taws xob (kev txheeb xyuas seb cov raj xa hluav taws xob tsis zoo.
Qhib lub P Electrode txhua lub lim tiam: soak hauv 4 teev daws teeb meem Nickel ntsev tso rau ntawm lub npoo hluav taws xob tso rau ntawm lub npoo hluav taws xob.
3. Txheem cov khoom noj thiab txheej txheem txij nkawm
1.} Pub lub hauv paus: dilution, qeeb, batch
Alkaline Tshuaj Ntxiv (xws li ammonia):
Tom qab diluting rau 5% ~ 10% concentration, maj mam txw los ntawm cov qib siab siab siab (ntws<50mL/min) to avoid local over-alkali Ni (OH)₂ precipitation.
Tom qab kev ntxiv, nws yuav tsum tau ncig ua si thiab nplawm, thiab tom qab ntawd qhov ntsuas kub tau tsa rau tom qab tus nqi faib .
Ntxiv cov tshuaj yeeb yam ntxiv (xws li hatso₄):
Ua ntej dilute cov kua qaub mus rau 20% thiab maj mam hliv nws ua ke ntawm lub tank phab ntsa thaum ua rau cov khoom siv corrashing thiab corrosion ntawm cov khoom {}}
{{0 {}} tsis tu ncua purify plating mpurities
Ua kom tau cov pa roj carbon: ntxiv 5 ~ 10G / l activated carbon rau txhua 20 ~ 30 lub hlis tsim tawm (lossis 1 ~ 2 lub hlis
Phosphite tshem tawm: thaum lub confentration ntawm phosphite (hpo₃²⁻) yog ntau dua 40g / u, txias rau crystallize nws, lossis nws yog xaiv tau tawm los ntawm ion pauv pauv resin.
Iv {. khoom thiab tswj ib puag ncig
1.} Kev yoog ntawm kev tso plating tank thiab cov twj xa hluav taws xob
Cov khoom siv tank: pp (polypropylene) lossis PVC siv rau kua qaub pluab plentating; 316L stainless hlau (kom tsis txhob muaj cl a corrosion) lossis PVDF yog siv rau Alkaline Plating daws los tiv thaiv cov tshuaj cuam tshuam ntawm PHICE.
Kev ntsuas cua sov: dej da dej cua kub lossis titanium cua sov ua kom tsis txhob muaj Fa³ +, uas yuav ua rau muaj kev cuam tshuam ntawm hypophosphite thiab haus Oh.
{{0 {}} tswj qhov xwm txheej ruaj khov ntawm cov chaw tsim khoom
Kev sib txuas kub Kev tswj: Qhov kev kub siab uas yuav tsum muaj kev daws teeb meem thaum 88 tus lej kub siab (xws li qhov ntsuas kub) {)
Zam kev sib kis: ua kom muaj zog acid / muaj zog alkali depital tank) me nyuam me me los tiv thaiv volatile dog dig los ntawm poob rau hauv cov plating tov .
V .} Cov Neeg Ua Haujlwm Kev Kawm thiab Kev Npaj Ua Txawv Tebchaws
1. Cov qauv ntawm phau ntawv ua haujlwm
Npaj "Py tus nqi tswj SOP" kom paub meej:
PH<4.2 or >5.8 yuav tsum raug kaw rau kev ua tiav);
Cov txheej txheem kov kev kub ceev (xws li thaum tus nqi pH nce tam sim no, ua ntej txias rau 60℃thiab tom qab ntawd kho cov kua qaub).
{{0 {}} kev xyaum xyaum thiab kev tshuaj xyuas
Npaj PH tus nqi txawv txav tsis xwm ceev drts txhua lub quarter, suav nrog:
Simuling schleme kev hloov thaum muaj xwm ceev thaum cov xov tooj online tsis tau;
Deal nrog plating daws teeb meem los ntawm dheev poob hauv pH tus nqi (xws li sai sai ntxiv nickel carbonate kom neutralize ntau dhau h⁺).
Establish "pH Abnormal Case Library", analyze historical problems (such as excessive feed caused by pump failure), and optimize preventive measures.
VI . Qhov tseem ceeb Parameter Xyuas Daim Ntawv
Soj ntsuam cov khoom kuaj tau ntau yam kev ntsuas sib txawv txawv
Da Dej Ph Tus Nqi 2 zaug / Teev Acidity: 4.5 ~ 5.5
Alkalinity: 8.5~10.0 Start automatic adjustment when deviation is >0.3, and stop production when >0.5
Nickel ion concentration 1 lub sijhawm ib hnub 8 ~ 12G / l Ntxiv rau npib tsib) yog qis dua qhov qis dua, thiab dilute da dej yog tias nws siab dua li qhov txwv sab saud
Hypophosphaphite concentration 1 lub sij hawm ib hnub 25 ~ 35 ntxiv nah happo₂ yog tias nws qis dua 20g / l, thiab dilute yog tias nws siab dua 40g / l
Phosprite concentration 1 lub sij hawm ib lub lim tiam <30g / l> 40g / l khov thiab tshem impurities
Da Dej Kub Real-Time Xyuas Acidity: 88 ~ 92 Qib
Alkalinity: 50~65℃ Start the chiller when over-temperature, and check the heating tube when the temperature difference is >5 degree
Lub ntsiab
Tus yuam sij tiv thaiv pH tsis zoo yog tsim kom haum rau tib neeg txoj kev ua haujlwm, thiab thaum kawg tswj hwm cov ntsiab lus ntawm tib neeg, thiab thaum kawg} Nyob rau hauv tib lub sijhawm, nws yog ib qho tsim nyog rau Paub txog qhov kev tsis txaus ntseeg yog feem ntau yog "ceeb toom rau kev zam rau kev kho cov tsos mob kom tsis txhob saib cov tsos mob tsis haum rau lub hauv paus ua.