Ib Lub Tswv Yim Sib Npaug ntawm Kev Txiav Tshuaj Milling: Kev Ntsuas Qhov Zoo thiab Qhov Tsis Zoo ntawm Titanium Alloy Processing
Cov khoom zoo tshaj plaws ntawm cov titanium alloys tau raug lees paub los ntawm kev ua lag luam ntev lawm, ua rau lawv nrhiav tau ntau hauv kev tsav dav hlau, cov khoom siv kho mob, thiab lwm yam teb. Lawv lub zog siab, qhov ceev qis, thiab kev tiv thaiv corrosion zoo heev ua rau lawv yog cov khoom siv xaiv rau ntau daim ntawv thov siab. Txawm li cas los xij, nws tau lees paub dav dav tias kev siv cov titanium alloys yog ib qho nyuaj rau tawg - tsis yog lawv tsuas yog ua rau tsis muaj peev xwm ua haujlwm tau zoo xwb, tab sis lawv cov thermal conductivity qis heev ua rau cov cua sov tsim thaum txiav. Qhov no ua rau cov cuab yeej hnav sai thiab, thaum muaj xwm txheej hnyav, ua rau puas tsuaj los ntawm thermal. Cov txheej txheem ua khoom siv ib txwm muaj feem tsis txaus.
Kev txiav tshuaj lom neeg yog dab tsi tiag?
Txawm hais tias tsis yog ib txoj kev tshiab, kev siv tshuaj lom neeg milling yog qhov siv tau zoo heev rau kev siv cov khoom nyuaj, tshwj xeeb tshaj yog rau cov khoom uas muaj cov duab geometries nyuaj thiab cov kev cai nruj heev. Nws lub hauv paus ntsiab lus yog yooj yim: xaiv cov khoom siv los ntawm kev siv tshuaj lom neeg etching kom ua tiav qhov kev ua haujlwm raug thiab qhov chaw tiav. Rau cov titanium alloys - cov ntaub ntawv uas nyuaj rau tshuab - kev siv tshuaj lom neeg milling zam cov teeb meem no, ua rau muaj kev ua haujlwm zoo thiab meej.
Cov txheej txheem tshuaj lom neeg ntawm titanium alloy milling muaj ntau kauj ruam sib txuas, txhua kauj ruam yuav tsum tau ua tib zoo saib xyuas: kev ntxuav qhov chaw ntawm ib feem, kev siv tshuaj tiv thaiv, kev txiav, kev xeb tshuaj (lossis kev yaj), kev ua kom tsis muaj zog thiab kev yaug, thiab thaum kawg, kev tshem tawm cov txheej tiv thaiv. Qhov ua tau zoo ntawm txhua kauj ruam cuam tshuam ncaj qha rau qhov zoo ntawm kev ua haujlwm kawg, tsis muaj chaw rau kev saib tsis taus.
Cov Kauj Ruam Ib Kauj Ruam ntawm Kev Ua Haujlwm:
1. Kev Ntxuav Qhov Chaw Ntawm Cov Cheebtsam: Tso Lub Hauv Paus Rau Kev Ua Haujlwm
Kev ntxuav qhov chaw yog thawj kauj ruam tseem ceeb tshaj plaws hauv kev siv tshuaj lom neeg. Kev ua tiav thiab kev ua haujlwm ntawm cov txheej txheem tom qab ntawd nyob ntawm qhov huv si uas ua tiav ntawm no. Cov titanium alloy nto yooj yim khaws cov roj seem, plua plav, oxide nplai, thiab ntau yam kab mob txawv teb chaws. Cov kab mob no ua rau qhov sib txuas ntawm cov txheej tiv thaiv thiab qhov chaw ntawm qhov chaw puas tsuaj, ua rau muaj kev xeb tsis sib xws. Thaum kawg, qhov no ua rau qhov tseeb ntawm kev ua haujlwm thiab ua rau cov khoom siv tsis siv tau.
Hauv kev tsim khoom tiag tiag, muaj ntau txoj kev ntxuav uas siv. Cov no suav nrog kev so nrog cov ntaub paj rwb uas ntub rau hauv cov kuab tshuaj organic kom tshem tawm cov roj seem lossis kev ntxuav alkaline. Rau cov nplai oxide tawv ncauj thiab cov khoom tsis huv, yuav tsum tau ntxuav acid lossis electrolytic etching kom tshem tawm tag nrho. Cov khoom sib xyaw titanium alloy precision hauv kev siv aerospace raug ntxuav kom huv si ua ntej ua haujlwm kom ntseeg tau tias qhov chaw huv si ua tau raws li cov qauv ua ntej mus rau kev ua haujlwm tom ntej.
2. Siv Cov Txheej Txheem Tiv Thaiv: Ua tiav "Kev Tiv Thaiv Kom Tseeb."
Qhov zoo ntawm cov txheej tiv thaiv ncaj qha txiav txim siab qhov tseeb ntawm kev sib tsoo tshuaj thiab yog ib qho ntawm cov ntsiab lus tseem ceeb ntawm tag nrho cov txheej txheem. Nws yuav tsum tsis yog tsuas yog ua kom muaj kev sib txuas zoo xwb tab sis kuj yuav tsum tiv taus xeb, ua siab ntev rau qee qhov kub, ua kom zoo li cov duab ntawm qhov khoom, thiab tso cai rau kev tshem tawm yooj yim tom qab - sib npaug kev ruaj khov thiab kev siv nyiaj tsim nyog.
Tam sim no, cov ntaub ntawv tiv thaiv tseem ceeb uas siv rau kev ua cov titanium alloy thoob ntiaj teb yog polyvinyl resin thiab styrene-butadiene roj hmab. Cov txheej txheem txheej txheem raug xaiv tau yooj yim raws li cov yam ntxwv ntawm cov khoom, suav nrog txhuam, dipping, txau, nchuav, thiab electrophoretic txheej. Rau cov khoom yooj yim, txhuam lossis dipping txaus - yooj yim thiab pheej yig. Txawm li cas los xij, cov khoom nyuaj nrog cov kev cai nruj heev yuav tsum tau txau lossis electrophoretic txheej kom ntseeg tau tias muaj kev sib npaug, ua tiav ntawm cov txheej tiv thaiv, tiv thaiv kev sib txawv ntawm xeb los ntawm cov chaw tsis nco qab.
3. Kev Txiav: Txhais Kom Tseeb Txog Thaj Chaw Corrosion
Kev txiav yog "cim cov ciam teb" rau kev xeb tshuaj los ntawm kev tshem tawm cov txheej tiv thaiv ua ntej ntawm thaj chaw uas tau teem rau kev txiav. Cov kauj ruam no xav tau kev ua tib zoo heev los kos kab xeb kom raug. Cov neeg ua haujlwm siv cov riam txiav los txiav raws cov kab xeb uas tau teeb tsa ua ntej, tom qab ntawd tev tawm cov txheej tiv thaiv tsis xav tau - ib qho txheej txheem hu ua "peeling."
Yuav kom paub tseeb tias cov qauv etching raug, cov qauv tshwj xeeb raug siv rau kev cim. Tom qab tshem cov qauv, cov txheej txheem stripping yuav tsum tau ceev faj heev kom tsis txhob ua rau cov npoo ntawm cov txheej tiv thaiv seem puas thaum xyuas kom meej tias qhov chaw ntawm thaj chaw uas yuav tsum tau etched huv si thiab tsis muaj cov khoom seem. Tej teeb meem xws li kev stripping tsis tiav lossis cov npoo puas yuav tsum tau kho sai sai; txwv tsis pub, etching tom qab ntawd yuav ua rau tsis zoo, ua rau qhov zoo ntawm ib feem puas tsuaj.
4. Kev Siv Tshuaj Etching (lossis Kev Yaj): Theem Ua Haujlwm Tseem Ceeb
Cov kauj ruam no yog lub plawv ntawm kev siv tshuaj lom neeg, lub hom phiaj yog kom ua tiav qhov etching sib xws yam tsis muaj kev cuam tshuam rau cov khoom siv kho tshuab ntawm cov titanium alloy. Kev tswj cov txheej txheem thaum lub sijhawm etching yog qhov tseem ceeb: tiv thaiv kev pitting thiab ntau dhau ntawm qhov chaw roughness thaum txwv tsis pub hydrogen nqus kom tsis txhob muaj hydrogen embrittlement, uas txo qhov zog ntawm qhov chaw thiab ua rau muaj kev pheej hmoo ntawm kev tawg.
Cov kua qaub feem ntau siv rau kev sib tsoo titanium alloy tshuaj lom neeg, suav nrog hydrofluoric acid-based, hydrofluoric acid-nitric acid-based, thiab hydrofluoric acid-chromic acid-based formulations. Ntawm cov no, cov kua hydrofluoric acid-nitric acid feem ntau siv dav hauv kev tsim khoom vim lawv qhov kev xeb nruab nrab thiab kev sib xyaw ua ke zoo heev. Piv txwv li, hauv kev lag luam khoom siv kho mob, cov titanium alloy implants feem ntau raug ua tiav siv hom kev daws teeb meem no. Nws ua rau muaj kev tswj hwm qhov tob ntawm etching thiab qhov zoo ntawm qhov chaw, ua tau raws li cov qauv nruj uas xav tau rau cov khoom kho mob.
5. Kev Ua Kom Tsis Muaj Kev Cuam Tshuam, Kev Ntxuav, thiab Kev Tshem Tawm Txheej Tiv Thaiv: Cov Kauj Ruam Kawg Los Xyuas Kom Zoo
Tom qab kev siv tshuaj lom neeg etching tiav lawm, cov khoom tsis tuaj yeem tshem tawm ncaj qha. Lawv yuav tsum ua peb kauj ruam kawg: neutralization, rinsing, thiab tshem tawm cov txheej tiv thaiv. Ua ntej, cov khoom raug muab tso rau hauv cov kua alkaline rau neutralization, tshem tawm cov tshuaj acidic seem kom tiv thaiv kev xeb ntxiv. Tom ntej no, cov khoom raug ntxuav dua nrog dej huv kom ntseeg tau tias tsis muaj cov tshuaj lom neeg seem nyob rau ntawm qhov chaw. Thaum kawg, cov nplai oxide thiab cov txheej tiv thaiv seem raug stripped tawm, ua tiav cov txheej txheem tshuaj lom neeg milling rau cov titanium alloy seem.
Kev Tshawb Fawb Txog Qhov Zoo Thiab Qhov Tsis Zoo ntawm Cov Txheej Txheem Tshuaj Milling
Yuav tsum tau hais tias kev siv tshuaj lom neeg milling muaj cov txiaj ntsig zoo hauv kev ua cov titanium alloy. Ua ntej, nws yooj yim rau kev khiav lag luam, tsis tas yuav siv tshuab nyuaj lossis cov cuab yeej txiav siab, uas txo cov nqi ua tiav. Qhov thib ob, nws ua haujlwm tau zoo heev, tshwj xeeb tshaj yog rau kev ua cov khoom sib xyaw ua ke ntawm cov khoom sib txawv nrog cov kev xav tau siab. Nws kuj ua kom ntseeg tau tias cov khoom zoo sib xws thiab ruaj khov - qee yam kev ua haujlwm ib txwm muaj teeb meem ua tiav.
Txawm li cas los xij, nws kuj muaj qhov tsis zoo. Tam sim no, cov tshuaj siv ua kua qaub feem ntau yog cov kua qaub, ua rau muaj kev pheej hmoo ntawm kev ua qias tuaj rau ib puag ncig. Kev kho thiab tso cov kua pov tseg tom qab ntawd yuav tsum ua raws li cov qauv ib puag ncig, ua rau cov nqi ib puag ncig ntawm cov tuam txhab nce ntxiv thiab ua rau cov txheej txheem nyuaj dua. Yog li ntawd, kev ua kom zoo dua cov qauv tshuaj siv ua kua thiab kev tsim cov txheej txheem uas tsis muaj kuab paug lossis tsis muaj kuab paug yog cov lus qhia tseem ceeb rau kev txhim kho yav tom ntej rau kev ua kua tshuaj.
Zuag qhia tag nrho, kev siv tshuaj lom neeg milling muab kev daws teeb meem zoo rau kev ua cov titanium alloy, kov yeej ntau yam teeb meem ntawm cov txheej txheem ib txwm muaj. Nrog rau kev nce qib ntawm thev naus laus zis thiab cov kev cai ib puag ncig uas nruj zuj zus, cov txheej txheem no tau npaj rau kev txhim kho tas mus li. Nws qhov kev siv yuav nthuav dav ntxiv, txhaj tshuaj tshiab rau hauv kev lag luam xws li aerospace thiab cov khoom siv kho mob.