Lub molding siab ntawm nias silicon nitride ncaj qha cuam tshuam rau qhov ceev, lub zog, seem stability, thiab tom qab sintering zoo ntawm lub preform. Yog tias qhov siab qis dhau lawm, cov hmoov hmoov tsis tuaj yeem ua kom tag nrho compacted, yooj yim ua rau porosity thiab ntom sib txawv; Yog tias qhov siab dhau lawm, nws yuav ua rau muaj kev ntxhov siab sab hauv, delamination, thiab tawg. Yog li ntawd, nyob rau hauv zus tau tej cov pressed silicon nitride, lub molding siab yuav tsum tau rationally tswj raws li cov yam ntxwv ntawm cov hmoov, khoom qauv, thiab cov khoom tej yam kev mob.
1. Txiav txim siab qhov tsim nyog raws li cov yam ntxwv ntawm cov hmoov.
Thaum nias silicon nitride, thawj qhov kev txiav txim siab yuav tsum yog cov khoom molding ntawm covsilicon nitridehmoov nws tus kheej. Cov hmoov uas muaj qhov sib txawv ntawm qhov sib txawv me me, purities, kev kho saum npoo av, thiab cov tshuab binder nthuav tawm cov cwj pwm sib txawv.
Yog tias cov hmoov muaj cov dej ntws zoo thiab qhov tsim nyog cov khoom me me, nws tuaj yeem hloov kho nws tus kheej sai sai thiab tsim kom muaj qhov ntom ntom ntsuab nyob rau sab nraud. Rau cov hmoov uas tsis zoo flowability los yog tsis sib xws particle faib, qhov teeb meem molding tsis tuaj yeem daws tau yooj yim los ntawm kev nce siab; es tsis txhob, cov hmoov ua thiab sib tov txheej txheem yuav tsum optimized ua ntej.
2. Lub siab yuav tsum tau nce ntxiv thiab ua kom zoo ib yam.
Nyob rau hauv tus txheej txheem ntawm nias silicon nitride, siab dua tsis yog ib txwm zoo dua. Ib txoj kev siv zog kom zoo feem ntau xav kom cov hmoov ua kom puv puv, particle rearrangement, thiab compaction txheej txheem, kom cov huab cua sab hauv yog maj mam tshem tawm thiab qhov sib txawv ntom ntom hauv lub cev ntsuab yog txo.
Yog tias qhov ntsuas siab nrawm dhau, cov roj hauv cov hmoov tsis tuaj yeem khiav hauv lub sijhawm, uas tuaj yeem yooj yim ua rau muaj qhov tsis xws luag. Kev faib tawm tsis sib xws kuj tseem tuaj yeem ua rau qhov tsis sib xws ntawm qhov sib txawv ntawm lub cev ntsuab. Yog li ntawd, nyob rau hauv qhov tseeb ntau lawm, lub pressurization nkhaus yuav tsum tau tsim tsim nyog raws li cov khoom zoo thiab hmoov lub xeev, thiab lub siab yuav tsum ruaj khov.
3. Kho molding siab raws li cov qauv khoom
Cov kev cai molding siab rau cov khoom sib txawv silicon nitride tsis yog tib yam nkaus. Rau cov khoom nrog cov qauv yooj yim thiab cov tuab tuab, qhov kev faib tawm siab yog qhov yooj yim los tswj; rau cov khoom uas muaj cov phab ntsa nyias, cov kab noj hniav sib sib zog nqus, cov duab tsis zoo, lossis qhov loj me, yuav tsum tau them nyiaj ntau dua rau cov hmoov txhaws thiab kev sib kis.
Rau cov khoom uas muaj cov txheej txheem nyuaj, siab dhau ntawm qee qhov chaw tuaj yeem ua rau qhov sib txawv ntawm qhov sib txawv, uas tuaj yeem cuam tshuam rau sintering shrinkage thiab qhov kawg qhov ntev. Yog li ntawd, thaum nias silicon nitride, tsim pwm tsim, kev faib khoom, thiab cov txheej txheem siab yuav tsum raug xaiv raws li cov khoom geometry, es tsis yog siv lub siab los tsim txhua yam khoom.
4. Txheeb xyuas qhov ntsuas siab los ntawm kev ntsuas lub cev ntsuab.
Lub molding siab thaum kawg yuav tsum tau xyuas los ntawm qhov zoo ntawm lub cev ntsuab. During production, key observations should be made regarding the green body density, dimensional accuracy, surface integrity, edge condition, and demolding performance. Yog hais tias lub ces kaum chipping, cracking, delamination, los yog loj deformation tshwm sim, yam xws li siab, hmoov ya raws cov ntsiab lus, binder ratio, thiab cov txheej txheem demolding yuav tsum tau soj ntsuam.
Yog tias koj xav paub ntau ntxiv txog nias silicon nitride thiab cov ntaub ntawv ntsig txog, thov hu rau HUANSHANG HIGHTECH. Peb pab neeg zoo siab los pab koj.
