TC4 titanium alloy dabtsi yog khoov qhov chaw ua: Cov 4 core ntsiab lus yuav tsum tsis txhob nco.

Hauv kev lag luam aerospace, TC4 titanium alloy (Ti-6Al-}4V) tau txais txiaj ntsig zoo rau nws lub zog zoo, lub teeb yuag, thiab kev tiv thaiv corrosion zoo dua, ua rau nws yog qhov kev xaiv nrov rau siab -cov khoom muaj tseeb thiab cov khoom tseem ceeb hauv cov khoom siv kho mob. Txawm li cas los xij, qhov "siab-cov ntaub ntawv ua tau zoo" nthuav tawm ntau yam kev sib tw hauv cov txheej txheem khoov, yooj yim ua rau muaj teeb meem xws li cov khoom tawg, lub caij nplooj ntoos hlav ntau dhau, lossis qhov tsis zoo ntawm qhov raug vim yog kev tuav tsis raug. Tsab ntawv xov xwm no, raws li kev paub txog kev lag luam, yuav qhia txog plaub qhov tseem ceeb hauv kev ua haujlwm ntawm TC4 titanium alloy khoov qhov chaw, pab koj txo cov txheej txheem kev pheej hmoo thiab tsim cov khoom zoo uas ua tau raws li qhov xav tau ntawm cov ntawv thov siab kawg!

 

1. Preheating thiab Temperature Control: Kev tswj qhov kub thiab txias yog "thawj kauj ruam hauv kev tiv thaiv kab nrib pleb".

 

TC4 titanium alloy muaj cov khoom tshwj xeeb:nws nthuav tawm tsis tshua muaj plasticity nyob rau hauv chav tsev kub, thiab yuav luag yeej tawg yog khoov ntawm qhov kub thiab txias. Yog li ntawd, preheating ua ntej khoov yog ib kauj ruam tseem ceeb uas tsis tuaj yeem raug tshem tawm.

 Lub preheating kub yuav tsum nruj me ntsis tswj nyob rau hauv qhov ntau ntawm 200-400 degree. Nws yuav tsum tsis txhob qis dua 200℃( txwv tsis pub lub plasticity yuav tsis txaus thiab nws tseem yuav yooj yim tawg), thiab nws yuav tsum siab tshaj 500 degree. Thaum qhov kub siab tshaj 500 degree, cov nplej ntawm TC4 titanium alloy yuav nrawm nrawm, uas yuav ua rau muaj kev poob qis hauv cov khoom siv tshuab, thiab kev ua haujlwm tom ntej yuav nyuaj rau kev kho.

 

 Nws raug nquahu kom siv lub ntsuas kub infrared los saib xyuas qhov ntsuas kub ntawm qhov chaw ua haujlwm hauv lub sijhawm tiag tiag thoob plaws hauv cov txheej txheem kom ntseeg tau tias cov cua sov zoo sib xws. Piv txwv li, thaum ua cov khoom khoov xws li lub dav hlau cav brackets, qhov kub ntawm qhov sib txawv hauv cheeb tsam tshaj 10℃yuav ua rau muaj kev pheej hmoo ntawm kev tawg thiab yuav tsum tau hloov kho raws sijhawm.

 

2.kev ceev thiab kev tswj siab: qeeb ceev + cov nyiaj them ncaj qha los tiv thaiv kev thim rov qab thiab teeb meem.

 

TC4 titanium alloy exhibits "strain aging" yam ntxwv, lub ntsiab lus hais tias kev ntxhov siab nyob rau hauv concentrates instantly thaum khoov, ua rau txhua yam los ntawm springback mus rau tawg. Tus yuam sij los daws qhov teeb meem no nyob rau hauv cov ntsiab lus ntawm "slow" thiab "precise" dabtsi yog khoov.

 

 Kev khoov ceev yuav tsum yog "qeeb," tswj ntawm tsawg dua lossis sib npaug li 5mm / s, zoo li cov cuab yeej precision, tso cai rau lub sijhawm rau kev ntxhov siab sab hauv thiab tiv thaiv kev ntxhov siab.

 Lub siab yuav tsum yog "precise." Lub siab tsis txaus yuav ua rau muaj qhov hnyav hnyav ntawm lub workpiece, yuav tsum tau them nyiaj 10% -15%; siab dhau heev lawm yuav ua rau wrinkling thiab tawg ntawm qhov khoov. Txoj hauv kev nyab xeeb tshaj plaws yog "sim khoov" txhawm rau nrhiav qhov zoo tshaj plaws tus nqi ua ntej ntau lawm. Piv txwv li, thaum ua cov khoov khoov khoov titanium alloy phais forceps, tsis muaj springback them, lub qhib thiab kaw lub kaum sab xis ntawm cov khoom yuav deviate los ntawm ntau tshaj 3 degree, tsis ua raws li cov qauv precision ntawm cov khoom siv kho mob.

 

3. Kev xaiv pwm thiab lubrication: Xaiv tus khub zoo txo ​​kev sib txhuam thiab ua kom muaj qhov tseeb.

 

TC4 titanium alloy muaj siab hardness, uas zoo tib yam pwm tsis tuaj yeem tiv taus. Nws yuav hnav tom qab ob peb khoov, uas ua rau tsis raug precision ntawm cov workpieces tom ntej; Yog tias tsis muaj kev sib txhuam ntawm lub workpiece thiab pwm tsis tswj, nws tuaj yeem khawb qhov saum npoo thiab ua rau adhesion.

Kev daws: Ua ntej, ua ntej H13 kub ua haujlwm tuag hlau rau kev xaiv pwm,Raws li nws muaj kev hnav zoo thiab thermal stability, tuaj yeem tiv taus siab -hardness cuam tshuam, thiab tswj xyuas qhov tseeb thaum lub sijhawm ua haujlwm ntev -.

 

Thib ob, siv cov titanium alloy- tshwj xeeb siab- cov roj nplua nyeem kub (xws li molybdenum-raws li ib qho) rau thaj tsam ntawm qhov chaw ua haujlwm thiab pwm ua ntej khoov.Qhov no tuaj yeem txo qis kev sib txhuam, tiv thaiv khawb thiab adhesion, thiab ua kom khoov smoother.

 

4, ua raws li-kev ua tiav thiab kev tshuaj xyuas zoo: kev daws kev ntxhov siab thiab kev sim nruj ua ke los xyuas kom meej tias "mais kawg" tsim nyog.

 

Kev khoov tsis yog qhov kawg ntawm cov txheej txheem - yog tias qhov seem sab hauv kev nyuaj siab ntawm TC4 titanium alloy workpiece tsis raug cuam tshuam nrog, nws yuav deform thaum siv tom qab; thaum kev soj ntsuam zoo yog "kab kawg ntawm kev tiv thaiv" los txiav txim seb qhov twg ua tau raws li cov qauv.

Kev ntxhov siab -relief annealing yog qhov tseem ceeb:Muab cov khoom ua haujlwm tso rau hauv lub tshuab cua sov ntawm 550-600℃thiab tuav rau 1-2 teev kom tshem tawm cov kev ntxhov siab sab hauv. Piv txwv li, yog tias cov kauj ruam no raug tshem tawm rau kev kho mob cog titanium alloy qhov chaw, kev ntxhov siab tso tawm tuaj yeem ua rau deformation tom qab cog, ua rau muaj kev pheej hmoo.

Kev tshuaj xyuas zoo yuav tsum tau xyuas nruj ntawm peb qhov ntsuas tseem ceeb:

 Lub kaum sab xis bending yuav tsum tau tswj nyob rau hauv ± 1℃raws li GB / T 3621 tus qauv (piv txwv li, lub kaum sab xis sib txawv ntawm 0.5℃yuav ua rau kev sib dhos misalignment hauv aerospace connectors).

 

 Cov teeb meem saum npoo yuav tsum raug tshuaj xyuas siv lub teeb muaj zog thiab lub iav tsom iav kom tiv thaiv cov kab nrib pleb thiab dents (cov teeb meem no tuaj yeem dhau los ua cov ntsiab lus kev ntxhov siab thiab txo lub neej).

 

 Kev ntsuas kev ua tau zoo ntawm cov tshuab yuav tsum xyuas kom meej tias lub zog tensile ntawm qhov khoov taw tes khaws ntau tshaj 90% ntawm cov khoom siv hauv paus (xws li, yog tias tsuas yog 85% khaws cia rau lub dav hlau brackets, lawv tuaj yeem tawg hauv qhov siab thiab siab siab).