1. Cov khoom ntawmSintered fused Alumina
Sintered fused alumina yog tsim los ntawm Al₂O₃ ( -Al₂O₃). Tom qab tsim, nws raug rho tawm ntawm kwv yees li 1,750-1,900℃los tsim cov khoom siv refractory siab. Nws cov khoom tseem ceeb muaj xws li:
High refractoriness:
Lub refractoriness yog ntau dua los yog sib npaug rau 1,800 degree, nrog ib tug melting point ntawm kwv yees li 2,040-2,050 degree, cia sintered fused alumina tiv taus kub heev.
Siab zog:
Zoo-tsim -Al₂O₃ muaju thiab kaw- pore qauv muab sintered alumina refractory zoo heev txhua yam muaj zog thiab siab ib leeg - particle zog.
Zoo heev thermal shock kuj:
ts kaw- cov qauv pore pab nqus cov thermal stress, tso cai rau cov khoom nyob ruaj khov thaum hloov kub ceev.
Zoo corrosion kuj:
Tsuas yog hydrofluoric acid thiab phosphoric acid, nws feem ntau tawm tsam feem ntau alkalis thiab mineral acids.
Kev ua haujlwm zoo thermal thiab hluav taws xob:
Nws muab cov thermal conductivity zoo thiab cov khoom siv hluav taws xob ruaj khov ntawm qhov kub siab.
Zoo ntim stability:
Nrog siab purity thiab tsis muaj additives ntxiv, nws muaj zoo ntim stability thiab tsis tshua muaj mus tas li hloov linear tom qab reheating.
2. Hom Sintered Fused Alumina
Cov hom tseem ceeb muaj xws li:
Tsis tu ncua sintered fused alumina:
Ua los ntawm calcined alumina, uas yog hauv av thiab tsim rau hauv pellets los yog lub cev ua ntej sintered ntawm qhov kub thiab txias.
Lub teeb sintered alumina refractory:
Ua los ntawm kev hloov pauv alumina siv cov txheej txheem foaming los tsim cov porous core - plhaub qauv. Feem ntau cov pores raug kaw, thiab qhov ntom ntom tuaj yeem hloov kho los ntawm kev tswj tus nqi ntawm tus neeg sawv cev foaming.
Microporous sintered alumina refractory:
Muaj ntau intragranular thiab intergranular pores, feem ntau ntawm micron theem. Nws cov tshuaj muaj pes tsawg leeg zoo ib yam li sintered tabular alumina, thaum nws cov qauv ntxeem tau muab qis dua qhov ntom ntom, qis thermal conductivity, thiab lub zog zoo.
Dense sintered fused alumina:
A high-density grade with higher bulk density and lower apparent porosity than conventional sintered tabular alumina. Nws kuj muaj kev txhim kho hnav thiab yaig tsis kam.
Sintered titanium alumina:
Cov khoom siv tshwj xeeb alumina tsim los ntawm kev qhia TiO₂ thiab tua hluav taws kub. Cov lattice zoo sib xws ntawm Al₂O₃ thiab TiO₂ tso cai hloov pauv ntawm Ti⁴⁺ thiab Al³⁺, ua kom cov siv lead ua lattice thiab txhim kho kev ua haujlwm sintering. Qhov no yuav pab txo qhov kub ntawm sintering thaum muab cov neeg kho tshuab siab zog thiab zoo elastic kuj.
3. Kev siv ntawm Sintered Fused Alumina nyob rau hauv cov ntaub ntawv refractory
Vim nws ua ke ntawm lub zog, thermal stability, thiab corrosion kuj, sintered fused alumina yog dav siv nyob rau hauv daim ntawv thov refractory.
Cov rooj vag swb:
Nws lub zog siab thiab thermal poob siab ua rau nws tsim nyog rau cov khoom siv swb siv hauv steelmaking.
Steel ladle castables:
Lub teeb yuag thiab microporous qib tuaj yeem txo cov thermal conductivity thaum txhim kho thermal poob siab, ua rau lawv haum rau ladle castables.
Precast refractory duab:
High refractoriness thiab hnav tsis kam ua sintered alumina refractory khoom tsim nyog rau ntau yam precast refractory Cheebtsam.
Lwm cov khoom siv refractory:
Cov qib ntom ntom tuaj yeem siv tau rau hauv hnav- thiab yaig- cov khoom siv tiv taus xws li cov phaj swb, cov ntsaws ruaj ruaj, thiab cov ntaiv cuam tshuam- thaj tsam castables, pab txhim kho lub neej kev pabcuam thiab kev nyab xeeb ntawm kev ua haujlwm.
Zuag qhia tag nrho, sintered fused alumina combines siab -kub tsis kam, txhua yam muaj zog, thermal shock resistance, thiab tshuaj stability, ua rau nws haum rau ntau yam steelmaking thiab siab - kub refractory daim ntaub ntawv.
