Yuav ua li cas chemically Polish titanium alloys
Titanium alloys tau dav siv nyob rau hauv Aerospace, cov cuab yeej kho mob, thiab muaj kev tsim khoom kho mob vim yog lawv lub zog siab, corrosion tsis kam, thiab biocompatibility. Txawm li cas los xij, txheej txheem oxide thiab kev ua cov xiam oob khab ntau zaus ua rau muaj kev ua tiav tsis zoo, cuam tshuam ob qho kev ua tau zoo thiab loog. Tshuaj lom neeg politting xaiv microscopic nto protrusions, ua tiav daim iav-zoo li ua tiav ntawm chav tsev kub, ua rau nws cov thev naus laus zis rau kev kho mob titanium nto.
Cov ntsiab lus tseem ceeb ntawm kev ua yeeb yam ntawm kev siv tshuaj lom neeg: xaiv cov kev xaus thiab theem theem
Lub ntsiab lus ntawm kev siv tshuaj lom neeg yog los siv cov tshuaj tiv thaiv redox kom yaj cov cim xeeb ntawm titanium alloy sai sai dua li recessed cheeb tsam. Piv txwv li, nyob rau hauv kev sib xyaw ntawm hydrofluoric acid (hf) thiab nitric acid (hf disid tswj hwm kev daws teeb meem kev ruaj khov los ntawm oxidation, tiv thaiv kev tiv thaiv mob hauv corrosion. Thaum lub sij hawm cov tshuaj tiv thaiv no, ib daim nplaum uas passivation zaj duab xis ua cov ntaub ntawv ntawm sab. Nws tsis sib xws cov txiaj ntsig ua rau sib txawv tam sim no: zaj yeeb yaj kiab yog theatrusions sai dua, thaum zaj yeeb yaj kiab yog thicker hauv cov chaw decessed thiab yaj maj mam qeeb. Qhov "tus kheej tswj kev tswjfwm" mechanism maj mam smootes saum npoo av, thaum kawg ua tiav daim iav-zoo li ua tiav. Kev sim cov ntaub ntawv qhia tau hais tias thaum 20-35 degree, ntshiab titanium (TA1) tuaj yeem kho nws txoj kev sib xyaw ua ke ntawm RA 3.2μm, tsis muaj kev pheej hmoo ntawm hydrogen embrittlement. Nyob rau hauv sib piv, thaum txhua yam polishing tuaj yeem tshem tawm cov oxide txheej, nws yog ib qho dhau los khawb thiab kev ntxhov siab ntau. Tshuaj lom neeg polishing, ntawm qhov tod tes, ua tiav kev ua kom tsis txhob ua thiab yog tshwj xeeb yog tsim rau cov txheej txheem nyuaj.
Tshuaj lom neeg polishing txheej txheem: los ntawm pretreatment rau kev kho mob tom qab
Pretricatment: degreasing thiab tu
Titanium alloy feem ntau khaws cov khoom paug tsis tau xws li cov kua dej thiab cov kua dej. Yog li ntawd, lawv yuav tsum yog ultrasonically ntxuav nrog cov organic huab cua (xws li acetone) li 10 feeb, ua raws li los ntawm cov dej uas muaj kev phom sij yaug.
Kev cai siv tshuaj polishing kev kho
Cov mis tsis muaj npe yog HF (40%): hnoos (65%): "}}}}}}} Sau ntawv thaum npaj:
Tswj kub: Kev daws teeb meem daws teeb meem yog yuav tsum tau tswj hwm ntawm 20-45 degree. Qhov kub siab dhau yuav ua kom nrawm dua cov decomposition ntawm nitric acid thiab tsim cov pa luam yeeb daj; qhov ntsuas kub tsawg dhau yuav ua rau muaj tus nqi tsis txaus.
Pais ntim: PE, PP, lossis PVC yog nyiam. Zam kev ntim hlau uas tuaj yeem ua rau cov kev phiv.
Stirring Street: Siv hlau nplaum nplawm lossis cua nplawm kom ntseeg tau cov kev sib xyaw ua ke ntau.
Polishing Txheej Txheem Tswj
Kev tshem tawm qhov ua haujlwm ntawm cov kev daws teeb meem rau lub sijhawm kho kom haum raws li txheej txheej Oxide (10-20 feeb rau cov khaubncaws sab nraud Oxide (10-90 vib nas this rau txheej tuab). Cov Ntsiab Lus Cov Ntsiab Lus muaj xws li:
Kev saib xyuas kev saib xyuas: Khij cov kev daws teeb meem txhua 5-10 cov haujlwm ua haujlwm tiav. Rov qab kho cov qauv kev daws yog tias HF noj dhau nrawm.
Spacing ntawm workpieces: zam kom muaj kev sib txuam los tiv thaiv cov kev kub ntxhov uas yuav ua rau cov tshuaj kom npau taws.
Cov ntsuas kev kub ntxhov: Yog cov pob zeb kub tshwm sim ntawm qhov chaw ua haujlwm, tshem tawm cov haujlwm ua haujlwm tam sim ntawd thiab rov npaj cov tshuaj polishing.
Kev Kho Mob Tom Qab: Kev Tu thiab Passivine
Tom qab pOLISHING, yaug nrog cov dej deionized dej rau 3 feeb nyob rau hauv titens oxide zaj duab xis thiab txhim kho corrosion tsis kam.
Los ntawm cov kauj ruam no, peb tuaj yeem chemically Polish titanium alloys, uas ua rau smoother thiab ci nto. Hauv kev xyaum, nws yog ib qho tseem ceeb kom ua tib zoo tswj tau kev saib xyuas thiab kub ntawm kev daws teeb meem ntau dhau los yog kub, uas tuaj yeem cuam tshuam rau cov nyhuv polishing. Tsis tas li ntawd, lub sijhawm ua polishing nyob ntawm cov khoom thiab kev mob ntawm Titanium Alloy nto. Feem ntau nws pom zoo kom ua ib qho kev ntsuam xyuas me me kom tau txais cov kev nruj tseeb ntawm lub sijhawm polishing.
