Thaum cov tshuaj chemistry thiab kub tswj nteg lub hauv paus rau niaj hnub titanium alloy tshuaj polishing, lawv nyob deb ntawm tib yam uas txiav txim siab zaum kawg nto zoo. Hauv ntau qhov xwm txheej tsim khoom, txawm tias cov chav da dej tau zoo thiab tswj tau nruj heev tsis tuaj yeem tshem tawm qhov tsis sib xws, qhia tau hais tias qhov sib txawv ntawm qhov sib txawv ntawm cov dej dynamics, kev tuav haujlwm, kev kho ua ntej, thiab kev tu da dej tseem nyob ua si. Cov ntsiab lus feem ntau tsis pom zoo no tuaj yeem cuam tshuam ncaj qha rau etching qhov sib xws, ua rau muaj qhov sib txawv hauv zos, lossis tsim kev sib cuag tsis sib xws ntawm qhov chaw ua haujlwm thiab cov tshuaj polishing. Nyob rau hauv lub tom ntej no series ntawm no series, peb yuav ntxiv mus tshawb nrhiav cov theem nrab tab sis tseem ceeb influencing yam, muab cov ncauj lus kom ntxaws teeb meem txoj kev, thiab tsim ib tug ua tiav, ntau lawm-oriented optimization lub moj khaum kom ua tau zoo tiag tiag ruaj khov thiab rov qab tshuaj polishing tau.
4. Da Dej Laus thiab Titanium Ion Accumululation
Raws li lub polishing da dej yog siv, yaj titanium accumulates nyob rau hauv cov tshuaj. Ti³⁺ thiab Ti⁴⁺ ions nce viscosity thiab hloov cov yam ntxwv diffusion ntawm da dej. Qhov kev sib txuam no yog qhov tsis txaus ntseeg vim tias pH ib leeg tsis ntseeg tau hais tias da dej.
Thaum qis titanium concentrations, lub da dej coj kwv yees. Raws li titanium tsim, ntau qhov kev hloov pauv tshwm sim: qhov ua tau zoo ntawm HF concentration txo qis vim yog complexation, lub diffusion ciam txheej thickens, thiab tus nqi polish slows tsis yog -uniformly. Nyob rau hauv siab concentrations, yaj titanium tej zaum yuav pib phaj rov qab mus rau workpiece nto, inhibiting uniform tshem tawm cov ntaub ntawv thiab qhia qhov chaw paug.
Lub neej hauv chav da dej sib txawv heev nrog rau qhov chaw ua haujlwm geometry, ua haujlwm kub, thiab tag nrho thaj chaw kho mob. Rau siab - ntim ntau lawm, kev tsom xam ntawm titanium concentration (ntawm titration los yog ICP) yog pom zoo, nrog ib nrab da dej hloov los yog regeneration thaum titanium cov ntsiab lus siab tshaj qhov pib ntawm 15-25 g / L. Cov txheej txheem rov tsim dua tshiab suav nrog kev xaiv nag lossis daus ntawm titanium ntsev los ntawm kev ua kom txias thiab pom, lossis ntxiv cov HF / HNO₃ tshiab kom pom tseeb kom rov ua kom cov khoom muaj zog.
5. Fluid Dynamics: Agitation, Workpiece Positioning, thiab Mass Transport
Uniform polishing yuav tsum muaj kev nkag mus rau cov tshuaj tshiab rau txhua qhov chaw ntawm qhov chaw ua haujlwm. Hauv chav da dej uas tsis muaj zog lossis tsis zoo, qhov chaw depletion ntawm cov reactants thiab tsub zuj zuj ntawm cov tshuaj tiv thaiv cov khoom tsim cov concentration gradients uas txhais ncaj qha mus rau hauv tsis yog -uniform polish tau.
Muaj ntau txoj hauv kev ntxhov siab, txhua tus muaj cov yam ntxwv sib txawv:
Rau qhov loj lossis geometrically complex, ib qho kev sib xyaw ua ke feem ntau ua haujlwm zoo tshaj plaws: recirculating ntws los tswj cov kev daws teeb meem zoo ib yam ntxiv rau cov neeg kho tshuab agitation ntawm lub workpiece kom tawg ciam teb txheej ntawm qhov chaw. Workpiece orientation kuj tseem ceeb. Cov pav ca yuav tsum tau muab tso rau hauv vertically es horizontally kom tsis txhob muaj pa npuas npuas tawm tsam qhov chaw. Cov khoom uas muaj qhov muag tsis pom lossis cov kab noj hniav hauv cov kab noj hniav yuav tsum tau kho tshwj xeeb los xyuas kom meej cov kev sib pauv hauv cov yam ntxwv ntawd.
6. Ua ntej-Kev kho mob thiab qhov tshwm sim ntawm qhov chaw
Tsis yog-pob zeb polishing feem ntau tshwm sim ua ntej lub workpiece puas tau nkag mus rau polishing da dej. Titanium nto ib txwm nqa ib zaj duab xis oxide passive uas txawv nyob rau hauv thickness thiab muaj pes tsawg leeg nyob ntawm seb ua ntej thermal thiab mechanical keeb kwm. Yog tias cov oxide zaj duab xis no tsis raug tshem tawm ua ntej polishing, qhov kev tawm tsam thawj zaug yuav tshwm sim ntawm qhov sib txawv ntawm qhov chaw, ua rau tsis zoo li - cov txiaj ntsig zoo txawm tias cov txheej txheem polishing tom ntej yog tswj tau zoo.
Cov txheej txheem kev daws teeb meem yog ob- kauj ruam mus kom ze: ua ntej, ua ntej - polish deoxidizing kauj ruam siv cov kua qaub me me los txhuam cov oxide ib txwm muaj. Tsuas yog tom qab ntawd cov khoom ua haujlwm nkag mus rau tag nrho -lub zog tshuaj polishing da dej. Alkaline degreasing ua raws li kev yaug kom huv si kuj tseem ceeb. Txhua cov roj seem, roj, lossis khw av thaiv cov kua qaub nkag mus rau hauv zos, tsim cov yam ntxwv tsis pom kev los yog stains. Cov kev tshawb fawb tau pom tias kev kis kab mob thaum lub sij hawm ua, khaws cia, thiab kev thauj mus los yog thawj qhov ua rau muaj kev hloov pauv hauv cheeb tsam ntawm titanium nto.
Qhov zoo ntawm cov dej yog qhov tsis tshua pom kev sib txawv. Deionized los yog distilled dej yuav tsum tau siv rau ob da dej ua- nce thiab yaug theem. Cov dej kais dej qhia txog cov tshuaj chlorides, sulfates, thiab hlau ions uas tuaj yeem cuam tshuam nrog kev da dej chemistry lossis tso cov stains qhuav rau ntawm qhov chaw polished.
Txuas ntxiv
