Dab tsi yog Cov Kev Ntsuas Tseem Ceeb Los Tiv Thaiv Kev Tiv Thaiv Kab Mob Los Ntawm Cov Txheej Txheem Ntawm Titanium Square Tube?

Titanium yog cov hlau reactive heev thiab nws cov dej num nce nrog kub.

Titanium thiab nws cov alloys ua nrog oxygen thaum cua sov hauv huab cua lossis hauv qhov chaw muaj pa oxygen. Thaum tshav kub qis dua 428 degree, ib qho kev tiv thaiv oxide zaj duab xis yog tsim. Thaum kub nce, lub thickness ntawm oxide zaj duab xis nce. Thaum qhov kub siab tshaj 538c, oxide zaj duab xis pib poob nws cov kev tiv thaiv thiab oxygen diffuses los ntawm cov zaj duab xis mus rau hauv cov hlau, tsim ib tug txawv gas permeable txheej. Yog hais tias nws siab tshaj 815c, ib tug xoob oxide txheej ntaub ntawv nyob rau saum npoo ntawm titanium.

Txhawm rau tiv thaiv oxidation ntawm titanium alloys, hydrogen absorption thiab paug nrog lwm cov kab mob thaum lub sij hawm superforming, kev ntsuas yuav tsum tau muab cov khoom zoo rau cov tsim titanium alloy qhov chaw.

Cov kev ntsuas tseem ceeb yog txheej tiv thaiv, nqus cua sov thiab inert gas (argon) tiv thaiv.

1, txheej txheej tiv thaiv

Tom qab ntxuav, qhov saum npoo ntawm daim ntawv dawb paug yog coated nrog ib tug tej thickness ntawm kev tiv thaiv txheej, thiab tom qab cov seem yog demolded, lub txheej yog tshem tawm los ntawm alkaline ntxuav, acid ntxuav los yog xuab zeb tshuab.

Lub txheej yuav tsum muaj cov khoom tseem ceeb hauv qab no:

a. Kev kub siab ua haujlwm, tuaj yeem siv rau qhov kub siab ntawm 750-1050 degree ;

b. Nws yuav tsum muaj qee yam lubrication los tiv thaiv qhov khoob ntawm qhov raug abraded hauv cov txheej txheem molding;

c. Cov txheej tuaj yeem txuas mus rau qhov chaw ntawm qhov khoob hauv qhov ua haujlwm kub;

d. Nws yog ib qho yooj yim tshem tawm tom qab cua sov;

e, tsis muaj teeb meem tshuaj, tsis ua phem rau ib puag ncig, tsis cuam tshuam rau tib neeg kev noj qab haus huv.

Tom qab kev txheeb xyuas cov titanium raj thiab titanium alloys haum rau siv nyob rau hauv superplastic forming coatings yog: Ti-2 cawv-soluble npaj yuav siv tau ua ke nrog Ti-3 graphite-raws li lubricants rau siv nyob rau hauv {{4} } degree thermoforming; KBC-12 cov dej-soluble npaj tuaj yeem siv ua ke nrog graphite aqueous tus neeg sawv cev. KBC -12 kev npaj dej-soluble, tuaj yeem siv nrog cov dej graphite.

2, Lub tshuab nqus tsev tsim

Titanium raj rau qhov chaw nrog nyias phab ntsa tuab, siab qhov chaw ci ntsa iab, hydrogen embrittlement rhiab heev ntawm -type titanium alloy, nqus tsev.

Kev tsim lub tshuab nqus tsev tsis tas yuav tsum tau siv lub tshuab nqus tsev vacuum kim. Raws li ntev raws li cov kab noj hniav sab saud thiab qis hauv cov kab noj hniav thiab cov pwm los tsim qhov chaw kaw ntawm cov txheej txheem cua sov, tshwj xeeb tshaj yog los ntawm 400 degree saum toj no mus rau qhov kub thiab txias thaum lub sij hawm sab sauv thiab sab hauv cov kab noj hniav yog maj mam tso tawm los ntawm lub tshuab nqus tsev, cov pwm ntawm cov kab noj hniav sab saud thiab sab qis ntawm cov degree ntawm kev sib tshuam ntawm cov saum toj no thiab qis dua 10 (-3) torr, thiab nyob rau hauv tus txheej txheem ntawm kev tsim los ntawm kev txiav tawm lub raj thiab ntim nrog argon tuaj yeem ua tiav rau lub hom phiaj. ntawm kev tsim. Cov txheej txheem tau siv los ua titanium foil corrugated ntawv thiab ua tiav cov txiaj ntsig tau zoo. Cov ntsiab lus hydrogen qis dua li tus qauv yuav tsum tau ua thaum lub tshuab nqus tsev tswj tau ntawm 10^(-3) torr, thiab qhov chaw uas muaj qhov ci tuaj yeem tau txais thaum lub tshuab nqus tsev mus txog 10^(-5) torr.

Tsis tas li ntawd, rau ntu nrog nruab nrab tuab thiab tsis muaj siab rau kev ntsuas ntawm qhov no thaum lub sij hawm moulding txheej txheem kev tiv thaiv kev tiv thaiv, thiab cov txiaj ntsig kuj zoo dua.