1. Cov Lus Qhia Txog Tus Thawj Coj / Cov Ntaub Ntawv Tseem Ceeb: Txij li 12 txog 40 Lub Voj Voog - Kev Ntsuam Xyuas Kev Pheej Hmoo thiab Tus Nqi Kom Tseeb
Lub Ntsiab Lus Tseem Ceeb: Thaum xub thawj tus neeg siv khoom ntsib teeb meem tawg thiab tshauv ntau zaus hauv kev yaj induction zaus siab. Peb qhov kev daws teeb meem yog isostatic graphite crucible - ua kom zoo los ntawm kev tsim khoom siv microstructure thiab kev ntxuav siab heev. Qhov txiaj ntsig tiag tiag ntawm rooj plaub no tsis yog tsuas yog xa cov khoom tsim nyog xwb, tab sis siv cov kws tshaj lij kev tsim khoom siv los tshem tawm cov kev pheej hmoo tsis tau npaj tseg thiab cov khoom pov tseg tom qab nkag siab tob txog tus neeg siv khoom cov txheej txheem.
Ib lub tuam txhab European uas tsim cov khoom siv thiab semiconductor purity siab (tom qab no hu ua "tus neeg siv khoom") tau mus cuag VET Energy nrog kev xav tau cov graphite crucibles ua haujlwm siab rau kev yaj cov hlau muaj nqis purity siab thiab cov khoom siv semiconductor-grade. Tus neeg siv khoom tau tawm tsam ntev nrog cov graphite/clay-bonded crucibles uas raug kev txom nyem los ntawm kev tawg quenching (fracturing txhua 12-15 lub voj voog nruab nrab) thiab impurity infiltration. Tom qab soj ntsuam cov neeg siv khoom cov kab cua sov/txias thiab kev faib tawm thermal stress, pab pawg neeg VET Energy tau pom zoo kom hloov mus rau cov isostatic graphite crucibles purity siab nrog isotropy coefficient ntawm 1.08 thiab cov tshauv ≤5 ppm, thiab xa cov khoom tsim tshwj xeeb raws li qhov tsim nyog.
Txij thaum pib sab laj, xaiv cov billet isostatic, mus rau kev ua CNC machining thiab xa khoom, tag nrho cov txheej txheem siv sijhawm li 3-4 lub lis piam. Tom qab xa tawm, lub neej ua haujlwm crucible nruab nrab nce mus txog ntau dua 40 lub voj voog (kev txhim kho 250%), kev ua qias tuaj ntawm cov khoom tsis huv tau txo qis 92%, thiab kev siv zog yaj tau txo qis 14%. Cov neeg siv khoom thawj zaug tau dhau los yam tsis muaj kev tawg lossis xau.
2. Keeb Kwm ntawm Cov Neeg Siv Khoom: Vim Li Cas Cov Tuam Txhab Khoom Siv Hlau thiab Semiconductor Zoo Tshaj Plaws Xav Tau Cov Khoom Siv Isostatic Graphite Zoo Tshaj Plaws
Cov Ntsiab Lus Tseem Ceeb: Cov neeg siv khoom uas nrhiav cov khoom siv graphite zoo tshaj plaws tsis xav tau cov khoom siv pheej yig. Ib yam li lub tuam txhab metallurgy thiab semiconductor precursor R&D hauv qhov no, lawv xav tau cov thawv uas muaj cov qauv me me sib xws, kev tswj hwm cov khoom tsis huv heev, thiab lub peev xwm tiv taus kev hloov pauv kub hnyav hauv cov chaw ib puag ncig hnyav.
Tus neeg siv khoom yog ib lub tuam txhab thev naus laus zis hauv Tebchaws Europe uas tshwj xeeb hauv kev ua kom cov hlau muaj nqis ntshiab (piv txwv li, 99.999% kub/nyiaj ntshiab) thiab kev tsim cov khoom siv semiconductor-grade precursor. Lub hauv paus ntawm lawv cov kab ntau lawm siv cov cub tawg induction zaus siab los yaj cov hlau lossis cov sib xyaw ntawm 1000 ° C–1500 ° C, ua raws li kev casting lossis kev siv crystallization kub siab.
Cov xwm txheej nyuaj no ua rau muaj kev cai nruj heev rau cov graphite crucibles:
- Kev tiv taus cua sov zoo heev: Kev ua kom sov sai los ntawm kev siv zaus siab thiab txias sai tom qab nchuav yuav tsum tau lub crucible kom tiv taus qhov sib txawv ntawm qhov kub thiab txias heev (ΔT > 800 ° C) yam tsis muaj kev tawg me me.
- Tsis muaj kuab paug: Cov khoom yaj no rhiab heev rau cov ntsiab lus me me (piv txwv li, Fe, Al, B, P). Cov khoom siv Crucible yuav tsum ua tiav qhov huv ntawm semiconductor (tshauv ≤5 ppm) kom tiv thaiv cov khoom tsis huv nkag mus rau hauv cov khoom yaj.
- Cov qauv ntom ntom, tsis nkag tau: Cov hlau yaj muaj lub zog nkag mus tau zoo. Yog tias graphite porosity siab dhau lossis yog tias muaj qhov tsis zoo anisotropic, cov yaj nkag mus rau hauv phab ntsa crucible ua rau cov khoom lo thiab poob.
Raws li tus neeg siv khoom, lawv tau sim cov graphite crucibles ib txwm muaj los ntawm ntau tus neeg muag khoom tab sis ntsib ob qho teeb meem loj: qhov anisotropy ntau dhau ua rau muaj kev tawg axial ntau zaus thaum lub sijhawm thermal cycling, ua rau kev tsim khoom nres thiab txawm tias muaj kev sib tsoo hlau molten loj heev, lossis cov tshauv siab txog 20-50 ppm ua rau lawv cov hlau zoo nkauj tsis ua tau raws li cov qauv kev ntshiab 5N. Tus nqi ntawm lub sijhawm tsis ua haujlwm, kev daws teeb meem, thiab kev rov yaj vim yog cov khoom siv tsis zoo tau dhau tus nqi ntawm crucible ntau zaus.
3. Cov Teeb Meem & Cov Teeb Meem Mob: Cov Hauv Paus Ua Rau Muaj Kev Ntxeev Thiab Cov Tshauv Ntau Zaus Hauv Cov Crucibles Ib Txwm Muaj
Cov Ntsiab Lus Tseem Ceeb: Cov teeb meem pwm uas muaj nyob hauv cov pwm thiab cov tshauv seem ntau hauv cov graphite uas tau extruded thiab cov graphite uas tau sib txuas nrog av nplaum yog cov ua rau lub neej crucible luv thiab cov khoom ua qias tuaj hauv kev yaj induction. Tsuas yog ua kom cov phab ntsa tuab zuj zus tsis tuaj yeem daws qhov teeb meem yam tsis tau hloov kho txoj kev tsim thiab cov txheej txheem ntxuav.
Ua ntej ntiav VET Energy, cov kab ntau lawm ntawm tus neeg siv khoom tau ntsib ob qhov teeb meem loj heev:
Qhov tsis ruaj khov 1: Kev ntxhov siab ntawm cua sov ua rau tawg thiab kaw ntau zaus
Hauv cov graphite uas raug extruded lossis vibratory-molded, kev sib dhos ntawm cov khoom me me qhia tau meej meej thaum lub sijhawm nias tshuab, nrog rau tus coefficient anisotropy feem ntau tshaj 1.35. Thaum lub kauj induction zaus siab siv lub teb hluav taws xob, lub crucible nthuav dav ntawm ntau qhov nrawm sib txawv hauv ntau qhov kev taw qhia, tsim kev ntxhov siab sab hauv loj heev. Tom qab qhov nruab nrab ntawm 12-15 lub voj voog, cov kab nrib pleb me me los ntawm phab ntsa yuav tshwm sim, yuam kom muaj kev tsim khoom thaum muaj xwm txheej ceev kom hloov pauv.
Qhov Tsis Txaus Siab 2: Cov tshauv ntau tshaj qhov txwv ua rau muaj kev nkag mus rau hauv cov khoom tsis huv
Cov graphite crucibles uas siv rau hauv kev lag luam feem ntau muaj cov tshauv ntawm 20–50 ppm, uas muaj cov hlau, txhuas, silicon, thiab lwm yam hlau oxides me me. Thaum kub tshaj 1000°C, cov khoom tsis huv no raug txo los ntawm cov tshuaj yaj thiab kis mus rau hauv cov kub/nyiaj yaj, ua rau cov khoom tsis huv thiab ua rau cov khoom seem ntau.
4. Kev daws teeb meem: Kev Siv Tshuab Txias Isostatic Siab (CIP) + ≤5ppm Kev Ua Kom Huv Kub Siab
Cov Ntsiab Lus Tseem Ceeb: VET Energy tsis sib tw rau "tus nqi qis, qhov zoo qis, kev siv nyiaj ntau." Hloov chaw, peb tsim cov khoom siv graphite isostatic uas muaj kev ntseeg siab los ntawm peb txoj hauv kev tseem ceeb: kev nias txias isostatic (CIP) rau microstructural isotropy, kev ntxuav kub heev (ash ≤5 ppm), thiab kev ua kom zoo ntawm phab ntsa tuab.
Tom qab nkag siab txog cov xwm txheej ua haujlwm tshwj xeeb ntawm tus neeg siv khoom (kev hloov pauv kub ntau zaus, txo qis huab cua, thiab kev rhiab heev rau cov khoom tsis huv), pab pawg neeg ua haujlwm ntawm VET Energy High-Purity Materials Division tsis tau maj nrawm thawb cov khoom txheem. Hloov chaw, lawv tau pib ua haujlwm txhim kho kev siv tshuab nrog kev koom tes nrog R&D thiab lub chaw kuaj mob.
【Kev Tshawb Fawb Txog Kev Tshawb Fawb Txog Engineering – Peb Lub Caij Nyoog ntawm Kev Ntsuam Xyuas Dua】
Tshooj 1: Kev Tshuaj Xyuas Qhov Ua Tsis Tau Zoo & Kev Ua Qauv Lub Cev
Cov pab pawg kws tshaj lij tau ua SEM (Scanning Electron Microscopy) thiab TGA (Thermogravimetric Analysis) rau cov crucibles tawg uas tau so haujlwm lawm. Kev tshuaj xyuas qhia tau hais tias cov graphite molded ib txwm muaj qhov sib txawv ntawm thermal expansion ntawm cov kev taw qhia ntsug thiab kab rov tav tshaj 1.45. Kev ntxhov siab thermal kub siab heev uas tsom mus rau qhov hloov pauv geometry sai sai, uas yog lub hauv paus ua rau muaj kev tawg me me. Lub caij no, kev sim ICP-MS (Inductively Coupled Plasma Mass Spectrometry) qhia tau hais tias cov tshauv ntawm cov crucible ib txwm muaj siab dua 45 ppm, thiab cov hlau hloov pauv tsis huv ua rau muaj kev puas tsuaj oxidative hauv zos ntawm cov pa roj carbon network ntawm qhov kub siab.
Ntu 2: Cov Txheej Txheem CIP & Kev Ntsuas Sib Piv Qhov Loj ntawm Cov Khoom Me Me
Yuav kom daws tau qhov teeb meem ntawm kev ntxhov siab thermal, pab neeg tau tsim ib qho kev sim sib txawv nrog peb qhov loj me ntawm cov khoom siv raw (5μm, 8–10μm, 15μm) thiab peb qhov siab CIP sib txawv (100MPa, 150MPa, 200MPa):
| Pawg Xeem | Qhov Loj ntawm Cov Khoom Me Me / Kev Nyuaj Siab Isostatic | Kev Ntsuas Me Me (Axial/Radial) | Cov txiaj ntsig ntawm kev ua kom ntau thiab kev poob siab thaum tshav kub |
|---|---|---|---|
| Kev Xaiv A (Kev Tswj Moulded) | 15 μm / 80 MPa molding | 1.42 (tsis ruaj khov heev) | Qhov Ceev 1.72 g/cm³, tawg tom qab 3 lub voj voog ntawm 200°C/min thermal shock |
| Kev Xaiv B (CIP Kev Sim 1) | 5 μm / 200 MPa CIP | 1.03 (zoo heev) | Qhov Ceev 1.88 g/cm³, ntom heev tab sis muaj kev ntxhov siab sab hauv siab |
| Kev Xaiv C (Kev Xaiv Zaum Kawg) | 8–10 μm / 150 MPa CIP | 1.05–1.15 (qhov sib npaug zoo tshaj plaws) | Qhov Ceev 1.85 g/cm³+, tiv taus 20 lub voj voog thermal shock yam tsis muaj micro-crack propagation |
Ntu 3: Kev Ua Kom Huv Si Kub Siab & Kev Txheeb Xyuas Kev Poob Siab Los Ntawm Kev Kub Ntxhov
Tom qab xaiv qhov loj ntawm cov khoom me me 8–10μm thiab 150MPa isostatic pressure parameters, pab neeg tau qhia txog cov txheej txheem ntxuav kub siab uas siv halogen pab (kev ntxuav tas mus li saum 2800°C), ua rau cov tshauv crucible kawg txo qis mus rau ≤5 ppm. Cov qauv kuaj tau raug rau 100 lub voj voog tas mus li hauv qab qhov xwm txheej ua haujlwm tiag tiag (1600°C kev hloov pauv sai sai thiab cua txo qis muaj zog) yam tsis muaj kev tawg, tawg, lossis kev ua qias tuaj - ua tau raws li thiab tshaj qhov kev cia siab ntawm tus neeg siv khoom.
1. Txias Isostatic Nias (CIP) Isotropic Graphite Billets:
Siv cov khoom siv graphite zoo heev uas muaj qhov loj me nruab nrab ntawm 8-10 μm, tsim nyob rau hauv qhov siab ntawm ntau txhiab atmospheres. Qhov ceev ntawm cov khoom nce mus txog >1.85 g / cm³, nrog rau cov isotropy coefficient tswj hwm nruj me ntsis ntawm 1.05-1.15. Qhov no ua kom muaj kev nthuav dav thermal sib npaug hauv txhua qhov kev taw qhia nyob rau hauv qhov kub siab heev, tshem tawm qhov kev ntxhov siab sab hauv.
Kev Sib Piv: Cov Kev daws teeb meem thawj zaug ntawm tus neeg siv khoom piv rau VET Energy Isostatic Graphite Solution
| Cov Qauv | Cov Kev daws teeb meem thawj zaug ntawm tus neeg siv khoom (Graphite Extruded txheem) | VET Energy Solution (Semiconductor High-Purity Qib) |
|---|---|---|
| Lub Neej Pabcuam Nruab Nrab | 12–15 lub voj voog | 40–42 lub voj voog (kev txhim kho 250%) |
| Cov ntsiab lus ntawm cov tshauv / cov khoom tsis huv | ≤25–50 ppm | ≤5 ppm (kev huv siab dua) |
| Kev Ua Kub (100 ° C) | 80–90 W/(m·K) | 125 W/(m·K) (ua kom sov tau zoo dua) |
| Zaus ntawm Kev Kaw Tsis Xav Txog Thaum Muaj Kev Tawg | 2–3 zaug hauv ib lub lim tiam | 0 zaug (kev tsim khoom ruaj khov tas mus li) |
| Tus nqi them rau ib lub voj voog | Qhov ntsuas pib (siab) | Txo los ntawm 31% (ua ke lub neej thiab kev txhim kho cov qoob loo) |
5. Cov Txiaj Ntsig & Cov Ntaub Ntawv: 3–4 Lub Limtiam Xa Khoom Sai nrog Kev Txhim Kho Ob Yam Hauv Kev Ua Tau Zoo thiab Lub Neej Siv Tau
Lub Ntsiab Lus Tseem Ceeb: Qhov txiaj ntsig tiag tiag ntawm kev koom tes no tsis yog tsuas yog xa cov graphite crucibles uas tsim nyog xwb. Qhov tseem ceeb tshaj, los ntawm kev tshuaj xyuas cov ntaub ntawv ua ntej, peb tau pab tus neeg siv khoom zam kev pheej hmoo loj - kev kaw cov kab ntau lawm ntau zaus thiab kev poob nyiaj rov qab.
Tom qab rau lub hlis ntawm kev ua haujlwm tas mus li thiab ntsuas cov ntaub ntawv ntawm qhov chaw tsim khoom ntawm tus neeg siv khoom European, VET high-purity isostatic graphite crucibles tau xa cov txiaj ntsig zoo heev:
- Lub neej ntev tshaj 40 lub voj voog: Lub neej ua haujlwm nruab nrab ntawm crucible tau nce ntxiv los ntawm 12-15 lub voj voog thawj zaug mus rau ntau dua 40 lub voj voog - kev txhim kho ntau dua 2.5 npaug.
- Cov txiaj ntsig dhau thawj zaug tau txog 99.8%: Cov tshauv tsawg heev (≤5 ppm) txo cov pa phem ntawm cov khoom kub/nyiaj uas muaj cov khoom ntshiab siab ntawm cov neeg siv khoom los ntawm 92%, daws tau tag nrho cov teeb meem tsis huv.
- Kev teb sai rau kev xa khoom: Txij li kev tshuaj xyuas daim duab, kev ntsuam xyuas cov txheej txheem, mus rau kev xa khoom tiav - tag nrho cov txheej txheem tsuas yog siv sijhawm 3-4 lub lis piam xwb, ua kom ntseeg tau tias qhov project tshiab ntawm tus neeg siv khoom pib tau zoo.
6. Cov Lus Nug Feem Ntau (FAQ)
Q1: Vim li cas cov isostatic graphite crucibles thiaj ruaj khov dua li cov graphite extruded ib txwm muaj?
Isostatic graphite yog tsim los ntawm kev siv cov kua dej siab siab sib xws, muab cov isotropy zoo heev (isotropy coefficient 1.05–1.15) yam tsis muaj qhov tsis zoo ntawm kev taw qhia sab hauv. Qhov sib piv, extruded graphite muaj qhov sib txawv ntawm cov coefficient thermal expansion thiab lub zog hla ntau qhov kev taw qhia, ua rau nws yooj yim rau cov kab nrib pleb thermal stress thaum lub sijhawm ua kom sov thiab txias sai.
Q2: Thaum twg qhov kub thiab txias, lub graphite crucible pib oxidize, thiab yuav ua li cas thiaj li ncua tau lub neej kev pabcuam?
Hauv ib qho chaw uas muaj oxygen, graphite pib oxidize ntawm kwv yees li 400 ° C. Txawm li cas los xij, nyob rau hauv lub tshuab nqus tsev lossis kev tiv thaiv roj inert (xws li argon lossis nitrogen), VET high-purity graphite crucibles tuaj yeem tiv taus qhov kub txog li 2760 ° C. Nws raug pom zoo kom preheat lub crucible ntawm 500 ° C kom tshem tawm cov dej noo ua ntej siv, thiab ua haujlwm nyob rau hauv ib qho chaw tiv thaiv thaum twg ua tau.
Q3: Ntxiv rau qhov loj me (1kg–16kg), puas yog VET Energy txhawb nqa cov duab tsis yog tus qauv?
Yog. VET Energy muaj 6,000 m² high-precision CNC machining workshop. Nrog cov isostatic billets loj (txog li D1440 × 1200 mm), peb tuaj yeem ua kom raug ntau yam qhov nyuaj, cov duab tshwj xeeb, thiab cov hau sib phim raws li cov neeg siv khoom kos duab, nrog rau kev tswj hwm kev kam rau siab txog ± 0.005 mm.
Q4: Vim li cas cov tshauv muaj ≤5 ppm thiaj tseem ceeb rau kev ua kom cov hlau muaj nqis thiab cov txheej txheem semiconductor?
Cov tshauv yog hais txog cov hlau tsis huv uas tseem tshuav nyob hauv cov khoom siv graphite (xws li hlau, txhuas, tooj liab, thiab lwm yam). Thaum kub tshaj 1000°C, txawm tias cov khoom tsis huv me me kuj yooj yim kis mus rau hauv cov hlau yaj, ua rau cov hlau muaj nqis tsis huv lossis cov khoom siv semiconductor tsis zoo. Kev ntxuav kom huv si txog ≤5 ppm tshem tawm tag nrho cov kev pheej hmoo ntawm kev ua qias tuaj.
7. Xaus Lus & Hu Kom Ua (CTA)
Lub Ntsiab Lus Tseem Ceeb: Qhov tseem ceeb ntawm cov thawv graphite tshwj xeeb tsis yog nyob rau hauv "kev muaj peev xwm tshuab lawv" - tab sis nyob rau hauv kev xa cov kev daws teeb meem uas tau ua pov thawj, tsim los uas txuas cov xwm txheej ua haujlwm nyuaj thiab cov khoom siv lub cev.
Yog tias koj cov kab ntau lawm kuj ntsib teeb meem xws li graphite Cheebtsam tawg, yaj ua qias tuaj, tsis muaj zog ua kom sov, lossis lub sijhawm ua khoom ntev, thov hu rau VET Energy technical engineering pab pawg. Peb yuav ua qhov kev ntsuam xyuas qhov ua tau ntawm cov khoom siv raws li koj cov xwm txheej yaj thiab tsim cov kev daws teeb meem zoo tshaj plaws uas sib npaug rau lub neej ua haujlwm ntev thiab kev huv siab.
Lub sijhawm tshaj tawm: Lub Xya Hli-31-2026