Titanium thiab nws cov alloys yog cov ntaub ntawv tseem ceeb hauv aerospace, kev kho mob cog, thiab cov khoom siv tshuaj vim lawv lub zog siab, corrosion resistance, thiab biocompatibility. Txawm li cas los xij, cov khoom tsim tawm thaum lub sijhawm tsim khoom- suav nrog 70% chips thiab 30% bulk pieces- ua rau muaj teeb meem ib puag ncig thiab cov peev txheej yog tias tsis kho kom raug.
Kev pov tseg ncaj qha ntawm cov khoom siv tsis raug kho tsis yog tsuas yog pov tseg cov peev txheej tsim nyog (tsim 1 tuj ntawm thawj titanium yuav tsum muaj 4 tons ntawm rutile ore) tab sis kuj muaj kev pheej hmoo ua paug rau ib puag ncig nrog roj, oxides, thiab hlau impurities. Kev rov ua haujlwm zoo ntawm titanium seem tau dhau los ua qhov tseem ceeb hauv kev tsim khoom ntsuab thoob ntiaj teb.
Kev faib tawm cov khib nyiab thiab ua ntej-Kev Kho Mob: Lub hauv paus ntawm Purification
Hom thiab yam ntxwv ntawm cov khoom seem
Chip Scrap: Tsim los ntawm kev tig los yog milling cov txheej txheem, muaj qhov loj ntawm thaj chaw uas yooj yim khaws cov kua dej thiab oxide txheej, yuav tsum tau siv tshuaj degreasing.
Bulk Scrap: Tau txais los ntawm stamping lossis txiav cov haujlwm, nrog cov kab mob qis dua tab sis muaj peev xwm suav nrog cov cuab yeej steel fragments.
Melting Residues: Muaj cov ntsiab lus siab ntawm oxides, xav tau cov tshuaj rho tawm kom rov qab tau cov hlau titanium.
Peb -Kauj Ua Ntej-Txoj Kev Kho Mob
►Degreasing:
Alkaline ntxuav (80℃NaOH tov) kom yaj cov roj ntxhia.
Ultrasonic organic solvent (acetone/ethanol) kho kom tshem tawm cov roj emulsified los ntawm micro- pores.
► Sib Nqus Sib Nqus: Siab- siv cov hlau nplaum (Ntau dua lossis sib npaug li 0.5 T) tshem tawm cov hlau tsis huv los tiv thaiv kev sib kis thaum lub sij hawm yaj.
► Crushing thiab tshuaj ntsuam: Tej khoom seem yog crushed rau<5 cm particles to enhance subsequent reaction efficiency.
Chemical Purification: Breakthrough Core Technologies
Pickling Method-Tus nqi-Kev xaiv zoo
Formula: HF (5–10%) + HNO₃ (20–30%) tov kua qaub.
Function: Dissolves surface TiO₂ and TiN oxide layers with >95% efficiency.
Kev sib tw: Hydrogen embrittlement txaus ntshai yuav tsum tau tom qab-kev kho lub tshuab nqus tsev annealing (500℃/ 4 h) rau kev txo qis.
Molten ntsev Electrolysis-Deep Deoxidation
Txheej txheem: Electrolysis hauv NaCl-KCl-NaF molten ntsev system (650 degree) tsav cov pa oxygen ions mus rau lub anode.
Cov txiaj ntsig: Cov ntsiab lus Oxygen txo qis dua 800 ppm, ua tau raws li aerospace -qib TA6V (Ti-6Al-4V) cov qauv.
Lub tshuab nqus tsev kub kho-Kev kho mob- Qib Purification
Cov xwm txheej: 900℃nyob rau hauv lub tshuab nqus tsev siab (10⁻³ Pa) nrog kev tiv thaiv roj argon.
Qhov zoo: Kev tshem tawm hydrogen ib txhij (99% efficiency) thiab volatilization ntawm hlau impurities (xws li Cu, Sn).
