Yuav ua li cas txhawm rau txhim kho cov txheej txheem platable stability los ntawm kev txhim kho kev ua haujlwm?

Txhawm rau txhim kho qhov ruaj ntseg ntawm electroless Nickel-phosphorus plating system {}} Cov txheej txheem kev ua haujlwm zoo, thiab cov ntsiab lus ua kom zoo thiab siv cov ntsiab lus tsim nyog thiab cov ntsiab lus siv tau:
Kuv {.} Kho kom haum kub tswj (tub ntxhais tsis sib haum)
{{0 {}} Kev Tswj Kub Kub Ntau Thiab Raug
Cov Txheej Txheem Zoo Tshaj: Tswj cov kev ntsuas hloov hloov ntawm cov txheej txheem ntawm 88 ~ 98 qib
Yuav tsum muaj cov yuav tsum tau: Siv cov kab mob PID kom ntsuas kub, qhov kub thiab txias dua li 100 degree)
Khoom hloov pauv:
Tshem tawm coil cua sov thiab siv cov raus titanium alloy cua sov raj + Qhia phaj rau tusyees faib cua sov {}}
Nruab qhov kub infrrared kub los soj ntsuam qhov kub thiab txias sib txawv ntawm cov kua dej saum toj thiab hauv qab ntawm lub tank hauv lub sijhawm tiag tiag (yuav tsum yog<2℃).
2. cua sov thiab txias logic
Pib theem: cua sov rau lub hom phiaj kub ntawm tus nqi tsawg dua lossis sib npaug} {degree rau sodium hypophosphite vim yog cov cua sov sai.
Tsis txhob kho: Thaum kaw tau ntau dua 2 teev, txo qhov kub txog 70 qib rau txo qhov kub thiab txias rau qhov kub thiab txias rau cov plating tov.
Ii {. Siv kev haum rau tus lej PHY (tus tseem ceeb tsis siv lub tshuab)
1. Tswj ntau yam thiab kev hloov kho zaus
Lub Hom Phiaj Ntau: Tswj PH tus nqi ntawm 4.5 ~ 5.2 (nruab nrab ntawm cov lus) lossis 4.2 ~ phosphorus tsawg dua lossis sib npaug ntawm0.2.
Txoj kev hloov kho:
Acid Haum: Siv 5% dilute sulfuric acid (txhob muaj cov kua qaub hydrochloric acid kom tiv thaiv kom tsis txhob muaj zog)
Alkalinity Kho: Siv 25% ammonia lossis sodium hydroxide tov, thiab ib qho ntxiv uas yog tsawg dua lossis sib npaug zos yog tsawg dua los yog sib npaug rau hauv lub zos-alkalination kom tsim ni (huag) ₂ nag lossis dej nag.
2. Tsis Txhim Kho
Nce cov doric acid contrations: los ntawm cov pa 25 g / l txog 30 ~ 35 g / l (several txwv), txhim kho cov ntau lawm pu kev hloov kho ntawm kev hloov kho ntawm kev hloov kho ntawm kev hloov kho ntawm kev hloov kho.
NCO TSEG: Cov solubility ntawm boric acid tsawg dua nrog txo qhov hluav taws xob kom tsis txhob muaj crystal daus {}}
III {. chaw thau khoom thiab workpiece pub tswj
1.} ectimize loading loading qhov ceev
Cov Qauv Qeb: Tus nqi thauj khoom tau tswj hwm ntawm 1 {{{{}}} 0 ~ 1.8 dm² / u los ua rau muaj kev sib cais ntawm cov plating.
Dynamic Haum:
Nyob rau hauv thawj theem ntawm tshiab npaj plating daws teeb meem, lub chaw thau khoom ntim tuaj yeem siv cov kev ua haujlwm uas tsim nyog (1.}}}}}}}}}}}}}}}}}
In the later stage of plating solution aging (phosphite>60 g / l), nws yog txo rau 1 . 0 ~ 1.2 dm² / u kom txo tau cov tshuaj tiv thaiv.
{{02.} specifications rau workpiece nkag mus rau hauv lub tank
Kev Kho Mob Ua Ntej: Kev ua haujlwm ua haujlwm tau ua tiav hauv 50 ~ 60 Degree Deionized dej rau 30 feeb kom tsis txhob poob rau hauv cov pH .
Nkag mus rau hauv lub tank: Siv cov immlined qeeb + kev co kom tiv thaiv kev ua kom nruj thaum lub zog ua kom tawg tuaj yeem ua rau cov kev txiav txim siab ntawm cov plating tov.
IV .}} Txawj tej yam ntawm stirring thiab pom kev
1.}} optimု optim်း ua kom nruj storring thiab txoj kev
Huab cua nplawm:
Siv phaj me me rau microporous pvc, thiab tswj cov kab npuas no rau 1 ~ 3 mm kom tsis txhob muaj kev kub ntxhov (ua kua rau qhov chaw siab<2 cm).
Thaum cheem ntau lawm, tua cov cua nplawm kom tiv thaiv cov pa hluav taws xob ntawm cov pa roj ntsha
Neeg kho tshuab stirring: yog tias duav stirring yog siv, qhov ceev yuav tsum tsawg dua los yog sib npaug ntawm cov kab rov tav ua cov khoom siv ntsug ntawm cov ua npuas .
{{0 {}}} Lub zog ua kom muaj zog
Pom qhov tseeb: Siv ib qho chaw lim polypropylene lim dej ib teev twg yuav tsum muaj ntau dua lossis sib npaug ntawm cov plawg (xws li nickelotals) yog kev cuam tshuam rau lub sijhawm .
Cov ntsiab lus txij nkawm:
Pre-lim li 30 feeb ua ntej kev tsim tawm txhua hnub kom tshem tawm cov khoom uas sib tw dhau.
Hloov cov lim dej tam sim ntawd thaum lub siab poob qis tshaj 0 {.}}}}}}}}}} kom tsis txhob muaj kev puas tsuaj rau cov khoom lim thiab ua rau cov particle re-discolution.
5.} kev ua haujlwm ntawm kev pub mis lub tswv yim (txo kev xav tsis thoob lub siab)
1.} segmented pub thiab ua ntej
Lub ntsiab ntsev thiab txo tus neeg sawv cev:
Mix Sodium Hypophosphaphite thiab Nickel Sulfate nyob rau hauv ib qho kev daws teeb meem marter (kev noj haus ntau dua los yog sib npaug rau ib lub sijhawm ua kom tsis txhob muaj ib zaug
Cov ntaub ntawv: Rau txhua 1 g ntawm npib tsib xee ions noj, ntxiv 5 g ntawm sodium hypophosphaphite (tswj hwm cov kev kawm tau nyiaj los ntawm kev coj ua online.
Cloning tus neeg sawv cev thiab tsis tu ncua: tsis tu ncua (muaj ntau yam kev sib txuam nrog kev cuam tshuam ntxiv rau kev cuam tshuam los ntawm kev tawm tsam sai li cas los ntawm kev tawm tsam sai li cas los ntawm kev sib raug zoo.
2. sij so ntawm kev pub mis
Zam kev pub mis thaum kub hloov (xws li thaum qhov kub tau nce rau thaum lub tank (} Diav rau 15 feeb
Tsum tsis pub noj 30 feeb ua ntej siv cov khoom lag luam kom txo qis cov kev ua si uas siab tshaj plaws uas tseem tshuav nyob rau hauv cov plating tov.
VI {. Cov Khoom Siv Khoom Siv thiab Txheej Txheem Adjustation
1.} plating tank thiab cov ntaub hlau
Txhua yam siv pph (pphrene siv polypropylene) lossis PVDF cov khoom los tiv thaiv cov hlau stainless, tooj thiab lwm yam hlau los ntawm kev hu rau cov plating daws; Lub raj cua sov yog coated nrog teflon txheej los tiv thaiv npib tsib-phosphorus tso zis los ntawm kev ua rau muaj catalysisty {}}
Txwv tsis pub tus cwj pwm: Siv sulfur-muaj cov roj hmab ntsaws ruaj ruaj (xws li cov roj hmab nitrile zoo nkauj yuav muaj kev sib zog los ua Nickel Sulfide nag lossis nag lossis 1}
2.} kev ua haujlwm ntawm tank qauv
Lub khob hliav qab hauv qab tsim (inclination lub siab dua los yog sib npaug los ntawm kev tawm hauv lub taub hau (Nickel-phopphorents tawm ntawm kev tawm mus los ntawm 15 hnub rau 7 hnub {4 4}
Lub chaw nres nkoj txeej yog 5 ~ 8 cm saum toj no cov kua rau saum cov ua npuas dej los ntawm kev sib cais thaum lub sijhawm thiav (xws li thoourcea tau yooj yim ploj nrog cov npaus).
Vii {. Kev Kho Mob Thaum Muaj Xwm Ceev ntawm Kev Kho Mob
1. Kev txiav txim siab ua ntej ntawm cov kev daws teeb meem plating
When the ORP potential suddenly drops by >50 mV or the conductivity suddenly rises by >10%, Tsis txhob ntau lawm tau khoom tam sim ntawd thiab cia cov plating daws sawv ntsug rau kev soj ntsuam:
Yog tias cov flocculent dub tshwm sim nyob rau hauv qab ntawm lub tank, nws yog kev txiav txim siab me me}}}}}}}}}} tuaj yeem lim nws .
Yog tias muaj cov npuas loj tshwm sim rau ntawm cov kua dej saum toj (cov khoom siv hydrogen tso tawm), tshem cov khoom siv cov decigpatitive (1 ~ 2 g / l), thiab tom qab ntawd sau cov composition {}}
{{02. rov qab ntawm cov ua haujlwm ua haujlwm ua kua
Ntxiv ib qho kev rov qab los ntawm lub zog thib ob rau lim cov plating (xws li 3 ~ 5% ntawm tag nrho cov nyiaj hauv lub tank los ntawm kev siv hluav taws xob hauv lub tank los ntawm kev siv hluav taws xob hauv lub tank los ntawm kev siv hluav taws xob (
Kev sib piv ntawm kev siv cov teebmeem
Kev tsim kho qhov ntev ua ntej kev ua kom ua tau zoo tom qab ua kom zoo sib xws indicators
Kev kub tswj kom ± 2 degree, hauv zos overheating full grultuation ± 0.5 degree, qhov sib txawv<1℃ Decomposition frequency decreased by 80%
PH ADMRY MRAMLE Pawg phau ntawv, hloov mus rau, hloov tsis xws li, kev hloov tsis xws li, hloov ± 0.1 npib tsib xee nag los txo qis los ntawm 65%
Chaw thau khoom ntim 2.5 dm² / l, nquag ntau tshaj 1.5 dm² / l, dynamic txuam plating kev pab lub neej ncua sijhawm rau 8 mto
Pom kev kaw lus 10 μm ntim khoom, cov duab ncig 55 zaug ntim 3 zaug khoom siv cov part power
Noj kev poob siab batch plumping, loj conging confription tas li, kev siv zog hloov kho<5% Stabilizer consumption reduced by 40%
Through the optimization of the above operating conditions, the critical decomposition temperature of the plating solution can be increased from 95℃ to above 100℃, and the spontaneous decomposition cycle can be increased from an average of 20 The time of plating is extended to more than 60 days, and the uniformity of the coating (thickness deviation) is improved from ±15% to ±8%, which significantly improves the process stability and production efficiency. In practical applications, it is necessary to combine the online monitoring system of the plating solution (such as real-time curves of pH, temperature, and conductivity) to establish early warning thresholds (such as automatic alarm when pH>5.3 lossis<4.2) to achieve preventive control.