Cov txheej txheem kev kho saum npoo rau titanium alloy forgings

 

Qhov ntom ntawm titanium alloy yog me me, yog li qhov inertia ntawm titanium kua ntws yog me me, thiab cov dej tsis zoo ntawm molten titanium ua rau tus nqi qis qis. Qhov kub ntawm qhov sib txawv ntawm qhov kub thiab txias pwm (300 degree) yog qhov loj, txias yog ceev, thiab casting yog nqa nyob rau hauv ib qho chaw tiv thaiv, yog li nws yog inevitable uas muaj pores thiab lwm yam tsis xws luag nyob rau saum npoo thiab sab hauv ntawm titanium. casting, uas muaj kev cuam tshuam zoo rau qhov zoo ntawm titanium casting. Cov hauv qab no piav qhia txog txoj kev kho saum npoo ntawmtitanium alloy forgings.

 

Ib. Tshem tawm cov txheej txheej txheej txheej saum npoo

 

Cov txheej txheej txheej txheej txheej txheej yog qhov tseem ceeb cuam tshuam rau lub cev physicochemical ntawm titanium cam khwb cia. Ua ntej sib tsoo thiab polishing cov titanium castings, nws yog ib qho tsim nyog yuav tsum tau tshem tawm tag nrho cov kab mob ntawm qhov chaw kom ua tiav cov txiaj ntsig zoo polishing. Qhov no tuaj yeem ua tiav sandblasting ua raws li acid ntxuav.

 

1. Sandblasting: Rau titanium castings, dawb corundum feem ntau nyiam rau sandblasting. Qhov yuav tsum tau qis dua li cov hlau tsis muaj nuj nqis, feem ntau tswj tau qis dua 0.45 Mpa. Qhov no yog vim tias qhov siab dhau heev tuaj yeem ua rau khaus cov xuab zeb tuaj yeem cuam tshuam rau titanium nto, ua rau muaj kev cuam tshuam nrog titanium nto thiab tsim cov kab mob sib kis, uas cuam tshuam rau qhov zoo. Lub sij hawm yuav tsum yog 5-30 vib nas this, tsuas yog txaus kom tshem tawm cov xuab zeb adhering rau saum npoo, txheej txheej sintering, thiab ib feem ntawm oxide txheej. seem txheej txheej txheej txheej txheej yuav tsum tau muab tshem tawm sai sai los ntawm kev ntxuav cov kua qaub.

 

2. Acid ntxuav: Acid ntxuav tau sai thiab tshem tawm tag nrho cov tshuaj tiv thaiv txheej txheej yam tsis qhia cov khoom paug rau saum npoo. Ob qho HF-HCl thiab HF-HNO3 acid ntxuav cov kev daws teeb meem tuaj yeem siv rau titanium acid ntxuav. Txawm li cas los xij, HF-HCl muaj qhov nqus hydrogen ntau dua, thaum cov tshuaj HF-HNO3 muaj qis dua hydrogen nqus tus nqi thiab tuaj yeem tswj tau los ntawm kev kho cov concentration ntawm HNO3 txo hydrogen absorption. Tsis tas li ntawd, nws tuaj yeem ci ntsa iab. Qhov concentration ntawm HF feem ntau yog nruab nrab ntawm 3% thiab 5%, thiab qhov concentration ntawm H3 feem ntau yog nyob nruab nrab ntawm 15% thiab 30%.

 

2, Txhim kho qhov tsis xws luag

 

Kev kho qhov tsis xws luag: Internal gas pores thiab internal defects: Cov no yuav raug tshem tawm los ntawm kub isostatic nias, tab sis qhov no yuav cuam tshuam qhov tseeb ntawm cov hniav hniav. Nws yog qhov zoo tshaj plaws los siv X-ray tshuaj xyuas kom zom tawm ntawm qhov chaw kom nthuav tawm cov roj pores, thiab tom qab ntawd kho lawv nrog laser welding Surface gas pore defects tuaj yeem kho ncaj qha los ntawm lub zos laser vuam.

 

3, Peb, sib tsoo thiab polishing

 

1.Grinding thiab PolishingTitanium muaj cov tshuaj reactivity siab, tsis tshua muaj thermal conductivity, siab viscosity, thiab tsawg sib tsoo piv thaum sib tsoo. Nws kuj yooj yim reacts nrog cov cuab yeej sib tsoo thiab abrasives. Yog li ntawd, feem ntau abrasives tsis haum rau kev sib tsoo thiab polishing titanium. Nws yog qhov zoo tshaj plaws los siv-nyuaj abrasives nrog zoo thermal conductivity, xws li pob zeb diamond thiab cubic boron nitride. Txoj kab sib tsoo ceev feem ntau yog 900-180 m/min. Tsis tas li ntawd, titanium nto yog feem ntau rau kev sib tsoo kub hnyiab thiab micro-cracks.

 

2. Tshuaj Polishing: Tshuaj polishing yog tiav los ntawm oxidation-re cov tshuaj tiv thaiv ntawm hlau nyob rau hauv ib tug tshuaj nruab nrab. Nws qhov zoo yog tias tshuaj polishing yog ywj siab ntawm cov hlau hardness, polishing cheeb tsam, thiab cov qauv zoo. Txhua qhov chaw nrog cov tshuaj polishing yog polished, tsis muaj cov cuab yeej tshwj xeeb uas xav tau, thiab nws yooj yim rau kev khiav lag luam. Nws yog tshwj xeeb tshaj yog haum rau polishing complex qauv ntawm titanium dentalheses. Txawm li cas los xij, cov txheej txheem tsis zoo ntawm cov tshuaj polishing yog qhov nyuaj rau kev tswj, thiab nws yuav tsum muaj cov nyhuv polishing zoo ntawm cov prostheses yam tsis cuam tshuam qhov tseeb ntawm cov prostheses.

 

4, Xim xim

 

Txhawm rau txhim kho qhov zoo nkauj ntawm titanium hniav hniav thiab tiv thaiv ntxiv oxidation thiab discoloration nyob rau hauv tej yam kev mob, nto nitriding, oxidation, thiab anodic oxidation txoj kev yuav siv tau rau xim rau saum npoo, tsim ib lub teeb daj los yog golden daj xim, yog li txhim kho qhov zoo nkauj ntawm titanium. khoov. Txoj kev anodic oxidation siv qhov cuam tshuam ntawm lub teeb los ntawm oxide zaj duab xis ntawm titanium los tsim cov xim ntuj, thiab ntau yam xim tuaj yeem tsim rau ntawm titanium nto hloov qhov voltage.