Daim Ntawv Thov
Cov khoom siv silicon carbide ceramicsua lub luag haujlwm tseem ceeb hauv kev ua haujlwm ntawm lub cub tawg hauv ntau lub lag luam. Ib daim ntawv thov tseem ceeb yog silicon carbide burner nozzles, siv dav hauv cov tshuab kub kub rau kev ua cov hlau, kev tsim iav, thiab kev hlawv ceramic vim lawv cov qauv ruaj khov hauv cov chaw kub heev. Lwm qhov kev siv tseem ceeb yog silicon carbide rollers, uas ua haujlwm txhawb nqa thiab xa cov khoom hauv cov cub tawg tas mus li, tshwj xeeb tshaj yog hauv kev sintering ntawm cov ceramics siab heev, cov khoom siv hluav taws xob, thiab cov iav precision. Tsis tas li ntawd, SiC ceramics yog siv ua cov khoom siv xws li beams, rails, thiab setters hauv cov cub tawg kiln, qhov twg lawv nyiaj dhau lub sijhawm ntev rau cov huab cua hnyav thiab kev ntxhov siab ntawm lub tshuab. Lawv kev koom ua ke rau hauv cov chav hloov pauv cua sov rau cov txheej txheem rov qab cua sov pov tseg ntxiv qhia txog lawv qhov kev hloov pauv hauv kev tswj hwm cua sov ntsig txog kiln. Cov ntawv thov no qhia txog silicon carbide qhov kev hloov pauv mus rau ntau yam kev xav tau ua haujlwm hauv cov thev naus laus zis cua sov hauv kev lag luam.
Cov ntawv thov tseem ceeb ntawm lub cub tawg muaj xws li:
1.Silicon carbide burner nozzles
Cov Kev Zoo ntawm Kev Siv Tshuab
1. Kev Ruaj Ntseg Thermal Zoo Tshaj Plaws
- Melting point: 2,730°C (ua kom muaj qhov kub thiab txias heev)
- Kev tiv thaiv oxidation txog li 1,600 ° C hauv huab cua (tiv thaiv kev puas tsuaj hauv oxidative atmospheres)
2. Kev Ua Haujlwm Thermal Zoo Tshaj Plaws
- 150 W/(m·K) thermal conductivity ntawm chav tsev kub (ua rau muaj kev hloov pauv cua sov sai thiab kev faib tawm kub sib xws)
- Txo kev siv hluav taws xob los ntawm 20–30% piv rau cov khoom siv refractory ib txwm muaj.
3. Kev Tiv Thaiv Thermal Shock Tsis Sib Xws
- Tiv taus qhov kub thiab txias hloov pauv sai tshaj 500 ° C / sec (zoo tagnrho rau cov txheej txheem cua sov / txias cyclic).
- Tswj kev ruaj khov ntawm cov qauv hauv qab thermal cycling (tiv thaiv kev tawg thiab deformation).
4. Lub zog siab ntawm kev kub siab
- Khaws tau 90% ntawm qhov kub thiab txias hauv chav tsev ntawm 1,400 ° C (qhov tseem ceeb rau cov khoom siv hauv qhov cub uas muaj peev xwm thauj khoom).
- Mohs hardness ntawm 9.5 (tiv taus hnav los ntawm cov ntaub ntawv abrasive hauv qhov chaw kiln).
| Vaj tse | Silicon Carbide (SiC) | Alumina (Al₂O₃) | Cov Hlau Uas Tsis Ruaj Khov (piv txwv li, cov hlau uas ua los ntawm Ni) | Cov Khoom Siv Refractories Ib Txwm Muaj (piv txwv li, cib hluav taws) |
| Kub Tshaj Plaws | Txog li 1600 ° C + | 1500°C | 1200 ° C (ua kom mos dua) | 1400–1600°C (txawv) |
| Kev Ua Kub | Siab (120–200 W/m·K) | Qis (~30 W/m·K) | Nruab Nrab (~15–50 W/m·K) | Qis heev (<2 W/m·K) |
| Kev Tiv Thaiv Kev Kub Ntxhov | Zoo heev | Tsis Zoo Mus Rau Nruab Nrab | Nruab Nrab (kev ywj pheej pab tau) | Tsis zoo (cov kab nrib pleb hauv qab ΔT sai) |
| Lub Zog Kho Tshuab | Khaws lub zog ntawm qhov kub siab | Degrades saum 1200 ° C | Tsis muaj zog thaum kub siab | Qis (brittle, porous) |
| Kev Tiv Thaiv Kev Xeb | Tiv taus cov kua qaub, alkalis, cov hlau molten / slag | Nruab Nrab (raug tawm tsam los ntawm cov kua qaub/bases muaj zog) | Yooj yim rau oxidation / sulfidation ntawm qhov kub siab | Degrades nyob rau hauv corrosive atmospheres |
| Lub neej ntev | Ntev (hnav/oxidation-resistant) | Nruab Nrab (cov kab nrib pleb nyob rau hauv lub voj voog thermal) | Luv (oxidizes / creeps) | Luv (spalling, erosion) |
| Kev Siv Hluav Taws Xob Zoo | Siab (hloov pauv cua sov sai) | Qis (tsis zoo thermal conductivity) | Nruab nrab (conductive tab sis oxidizes) | Qis heev (ua kom sov) |
Cov Ntaub Ntawv Kev Lag Luam
Ib lub tuam txhab ua hlau ua lag luam tau ua tiav kev txhim kho kev ua haujlwm zoo tom qab kev koom ua ke silicon carbide (SiC) ceramics rau hauv nws cov tshuab cua sov kub. Los ntawm kev hloov cov khoom siv alumina ib txwm muaj nrogsilicon carbide burner nozzles, lub tuam txhab tau tshaj tawm tias:
✅ Txo cov nqi kho txhua xyoo 40% vim yog txo cov khoom puas tsuaj hauv 1500°C+ ib puag ncig.
✅ Ua kom lub sijhawm tsim khoom nce ntxiv 20%, vim SiC tiv taus kev kub hnyiab thiab xeb los ntawm cov slag molten.
✅ Ua raws li cov qauv kev tswj hwm lub zog ISO 50001, siv SiC lub zog ua kom sov tau zoo los ua kom roj siv tau zoo dua 15–20%.
Lub sijhawm tshaj tawm: Lub Peb Hlis-21-2025