Txoj kev kho deg rau kev ua cov titanium thiab titanium alloy forgings
Qhov ceev ntawm titanium alloy yog me me, yog li lub inertia ntawm titanium kua ntws yog me me, thiab lub fluidity ntawm molten titanium tsis zoo, uas ua rau qis casting txaus tus nqi. Qhov kub ntawm qhov sib txawv ntawm qhov ntsuas kub thiab cov pwm (300 degree) yog qhov loj, qhov txias yog ceev, thiab cov casting yog nqa tawm hauv qhov chaw tiv thaiv. Cov teeb meem xws li qhov pores ntawm qhov chaw thiab sab hauv ntawm titanium castings yuav inevitably tshwm sim, uas muaj kev cuam tshuam zoo rau qhov zoo ntawm titanium castings. Cov hauv qab no piav qhia txog titanium alloy forgings nto kho txoj kev.
1. Tshem tawm cov txheej txheem txheej txheej
Cov txheej txheem txheej txheej saum npoo yog qhov tseem ceeb cuam tshuam rau lub cev thiab tshuaj lom neeg ntawm titanium castings. Ua ntej kev sib tsoo thiab polishing titanium castings, txheej txheej txheej yuav tsum tau muab tshem tawm kom ua tiav cov nyhuv polishing txaus. Cov txheej txheej txheej txheej txheej ntawm titanium tuaj yeem raug tshem tawm tag nrho los ntawm pickling tom qab sandblasting.
1. Sandblasting: Rau kev kho sandblasting ntawm titanium castings, nws yog feem ntau zoo dua los siv dawb corundum rau ntxhib txau. Lub siab ntawm sandblasting yog me dua li cov hlau tsis muaj nuj nqis, thiab feem ntau tswj tau qis dua 0.45Mpa. Vim tias, thaum txhaj tshuaj siab dhau lawm, cov xuab zeb tuaj yeem cuam tshuam rau titanium nto los tsim cov nplaim taws, thiab qhov kub thiab txias tuaj yeem cuam tshuam nrog titanium nto, tsim cov pa phem thib ob thiab cuam tshuam rau qhov zoo. Lub sij hawm yog 15 mus rau 30 vib nas this, thiab tsuas yog cov xuab zeb sticking, nto sintering txheej thiab ib feem ntawm casting nto thiab oxide txheej raug tshem tawm. Qhov seem txheej txheej txheej txheej txheej txheej yuav tsum tau muab tshem tawm sai sai los ntawm cov tshuaj pickling.
2. Pickling: pickling tau sai thiab tshem tawm tag nrho cov tshuaj tiv thaiv txheej, thiab nto yuav tsis muaj kuab paug los ntawm lwm yam khoom. Ob qho HF-HCl thiab HF-HNO3 pickling daws yuav siv tau rau pickling ntawm titanium, tab sis HF-HCl series pickling tov muaj ib tug loj hydrogen nqus peev xwm, thaum lub HF-HNO3 series pickling kua muaj ib tug me me hydrogen nqus peev xwm, uas muaj peev xwm. tswj HNO3 Qhov siab ntawm HF txo qis hydrogen nqus, thiab tuaj yeem ci ntsa iab. Feem ntau, qhov concentration ntawm HF yog li 3 feem pua ~ 5 feem pua, thiab cov concentration ntawm HNO3 yog li 15 feem pua ~ 30 feem pua.
2. Kev kho qhov tsis xws luag casting
Internal pores thiab shrinkage kab noj hniav Internal tsis xws luag: tuaj yeem raug tshem tawm los ntawm kub isostatic nias, tab sis nws yuav cuam tshuam qhov tseeb ntawm cov hniav hniav. Nws yog qhov zoo tshaj plaws los siv X-ray flaw nrhiav kom tau tshem tawm cov pores ntawm qhov chaw thiab siv laser kho vuam. Deg porosity tsis xws luag tuaj yeem kho ncaj qha los ntawm laser vuam hauv zos.
3. Sib tsoo thiab polishing
1. Kev sib tsoo tshuab: titanium muaj cov tshuaj lom neeg ua haujlwm siab, tsis tshua muaj thermal conductivity, siab viscosity, tsis tshua muaj neeg sib tsoo piv, thiab yooj yim rau cov tshuaj abrasives. Ordinary abrasives tsis haum rau kev sib tsoo thiab polishing titanium. Nws yog qhov zoo tshaj plaws los siv cov thermal conductivity zoo. Rau superhard abrasives, xws li pob zeb diamond, cubic boron nitride, thiab lwm yam, polishing kab ceev yog feem ntau 900 ~ 1800m / min. Txwv tsis pub, kev sib tsoo kub thiab microcracks yog nquag tshwm sim ntawm titanium nto.
2. Tshuaj polishing: Tshuaj polishing yog ua kom tiav lub hom phiaj ntawm leveling thiab polishing los ntawm oxidation-txo cov tshuaj tiv thaiv ntawm cov hlau hauv tshuaj lom neeg. Nws qhov zoo dua yog tias cov tshuaj polishing tsis muaj dab tsi ua rau lub hardness ntawm cov hlau, polishing cheeb tsam tsis muaj dab tsi ua nrog cov qauv zoo, txhua qhov chaw hauv kev sib cuag nrog cov kua polishing yog polished, tsis tas yuav tsum muaj cov cuab yeej tshwj xeeb nyuaj, kev ua haujlwm yog yooj yim, thiab nws yog tsim nyog rau polishing complex titanium hniav hniav brackets. Txawm li cas los xij, cov txheej txheem tsis zoo ntawm cov tshuaj txhuam hniav yog qhov nyuaj rau kev tswj, thiab nws yuav tsum muaj cov nyhuv polishing zoo ntawm cov hniav hniav yam tsis muaj kev cuam tshuam qhov tseeb ntawm cov hniav hniav.
4. Xim xim
Txhawm rau txhim kho qhov zoo nkauj ntawm titanium hniav hniav thiab tiv thaiv kom tsis txhob muaj xim ntawm titanium hniav nyiaj hniav kub los ntawm kev nruam oxidation nyob rau hauv lub ntuj tej yam kev mob, nto nitriding kev kho mob, atmospheric oxidation thiab anodic oxidation yuav siv tau rau nto colouring kev kho mob kom lub teeb daj los yog golden daj thiab txhim kho. cov titanium hniav hniav. kev zoo nkauj. Txoj kev anodic oxidation siv cov cuam tshuam cuam tshuam ntawm titanium oxide zaj duab xis ntawm lub teeb los tsim cov xim ntuj, thiab tuaj yeem tsim cov xim zoo nkauj ntawm titanium nto los ntawm kev hloov cov cell voltage.
