Titanium thiab titanium alloys muaj qhov zoo ntawm qhov ceev, muaj zog ua kom muaj zog, zoo corrosion kev ua tau zoo, zoo nkauj biocompatibility thiab li ntawd. Lawv tau siv dav hauv aerospace, navigation, metallurgy, roj av, tshuaj lom neeg kev lag luam, kev tsim hluav taws xob, tsheb, tshuaj, hluav taws xob, kev ua si thiab kev lom zem. Txawm li cas los xij, vim qhov nyuaj ntawm kev rho tawm, smelting thiab ua titanium, tus nqi tsim khoom yog siab heev. Tus nqi tsim khoom ntawm titanium ingots yog kwv yees li 30 npaug ntawm cov hlau ingots zoo ib yam thiab 6 npaug ntawm cov khoom siv txhuas, thaum cov nqi tsim khoom ntawm titanium alloy qhov chaw rau aerospace yog ntau dua vim tias cov nqi ua haujlwm siab.
Hmoov metallurgy tshuab yog ib txheej txheem ntawm kev ncaj qha cov hmoov thiab ua qhov chaw. Technically, qhov chaw uas tsis muaj kev sib cais, ruaj khov thiab kev ua tau zoo thiab cov qauv zoo tuaj yeem tau txais los ntawm txoj kev no; Kev lag luam, txoj kev no yog cov txheej txheem nrog me me los yog tsis muaj chips, thiab cov khoom siv tuaj yeem ncav cuag yuav luag 100%, txuag cov nqi ua haujlwm thiab txhim kho cov khoom lag luam.
Ntshiab titanium hmoov
Tam sim no, txoj kev tsim khoom ntawm ntshiab titanium hmoov rau kev txhaj tshuaj molding muaj xws li hydrogenation thiab dehydrogenation thiab roj atomization. Hydrogenation dehydrogenation hmoov yog tus cwj pwm los ntawm cov hmoov zoo tsis tu ncua, thaj chaw loj tshwj xeeb thiab cov ntsiab lus oxygen siab. Cov duab ntawm cov roj atomized hmoov yog spherical. Piv nrog rau cov hmoov tsis zoo hydrogenated dehydrogenation hmoov, nws muaj cov dej ntws zoo thiab txhaws, thaj chaw me me, muaj kuab paug tsawg hauv cov txheej txheem kev npaj, thiab cov ntsiab lus oxygen tsawg. Yog tias muaj qee yam ntawm hydrogenated dehydrogenation hmoov ntxiv, cov formability tuaj yeem txhim kho ntxiv. Nws yog lub ntsiab raw khoom hmoov rau titanium txhaj molding.
Titanium alloy hmoov
Cov txheej txheem kev npaj ntawm titanium alloy hmoov rau kev txhaj tshuaj molding feem ntau suav nrog: cov hmoov hmoov sib xyaw thiab cov txheej txheem ua ntej alloying. Lub caij hmoov sib xyaw txoj kev yog sib tov cov hmoov hmoov raws li qhov sib piv ntawm cov hlau los tsim cov hmoov hlau alloy. Txhawm rau txhim kho lub formability ntawm cov hmoov hlau alloy, ib qho kev faib ua feem ntawm cov roj atomized hmoov tuaj yeem muab sib xyaw rau hauv cov hmoov ntshiab titanium rau hydrogenation thiab dehydrogenation. Tus nqi ntawm alloy hmoov npaj los ntawm txoj kev no yog qhov tsawg. Ntawm cov txheej txheem kev npaj ntawm cov hmoov ua ntej alloyed, roj atomization txoj kev yog ib txoj kev pheej yig uas tuaj yeem ua tau ntau yam. Piv nrog cov hmoov ua ntej alloyed, cov hmoov txhuas ua los ntawm cov hmoov sib tov yog pheej yig, yooj yim rau kev tsim, thiab cov txheej txheem yog mature. Yog li ntawd, nws muaj kev lag luam dav dav.
Kev xaiv ntawm binder
Xaiv qhov tsim nyog binder yog qhov txuas tseem ceeb ntawm kev txhaj tshuaj molding. Nws cuam tshuam ncaj qha rau kev sib xyaw, txhaj tshuaj molding, degreasing thiab lwm yam txheej txheem, thiab muaj kev cuam tshuam zoo rau qhov zoo, degreasing thiab qhov tseeb qhov tseeb ntawm kev txhaj tshuaj molded blanks.
Binders rau titanium thiab titanium alloy hmoov txhaj tshuaj molding tuaj yeem yaj hauv dej lossis cov kuab tshuaj organic. Qee cov binders kuj ntxiv cov catalysts kom ceev cov decomposition ntawm binders. Tus nqi ntawm binder muaj kev cuam tshuam zoo rau kev tsim cov khoom zoo. Tsis txaus binder ua rau txoj kev nyuaj; Cov binder ntau dhau yuav txo cov viscosity ntawm cov khoom noj. Cov binder feem ntau suav rau 40% - 50% ntawm tag nrho cov pub (feem ntau), thiab thaum kawg raug tshem tawm los ntawm pyrolysis.
