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Kodi njerwa za mullite zopepuka zopepuka zingapirire ndalama zingati?

Kodi njerwa za mullite zopepuka zopepuka zingapirire ndalama zingati?

Njerwa zotchingira mullite ndi mtundu wina watsopano wazinthu zotsutsa, zomwe zimatha kulumikizana ndi lawi. Ili ndi mawonekedwe a kutentha kwambiri, kutentha pang’ono, kutsika kwamatenthedwe otsika, komanso mphamvu yopulumutsa mphamvu. Njerwa za Mullite zopepuka zotchingira zimakhala ndi magwiridwe antchito otentha kwambiri komanso otsika mtengo. Zitha kugwiritsidwa ntchito popangira utoto wamoto, zomwe sizingowonjezera kutentha kwa thupi lamoto, kupatula kuyatsa, komanso zimawonjezera moyo wautumiki wa m’ng’anjoyo ndikuchepetsa ndalama zowonongera.

Njerwa za Mullite zopepuka zopepuka zimapangidwa ndi bauxite, dongo, “miyala itatu”, ndi zina zambiri, kudzera pakupanga ma pores ambiri olumikizidwa kapena otsekedwa pakupanga zinthu kapena kutentha kwambiri.

NKHANI za mullite opepuka kutchinjiriza njerwa:

Kodi njerwa za mullite zopepuka zopepuka zingapirire ndalama zingati? Kutentha kwamphamvu kwa njerwa zotsekemera za mullite kumatha kufika pamwamba pa 1790 ℃. Kutentha kotsika koyamba ndi 1600-1700 ℃, kutentha kokhazikika kocheperako ndi 70-260MPa, kukana kwamphamvu kwamphamvu ndikwabwino, mphamvu ndiyokwera, kutentha kotsika kotsika ndikotsika, koyefishienti kakukula ndikotsika, koyefishienti wamafuta ndi yaying’ono, ndipo slag ya asidi imagonjetsedwa. Ndipo imatha kuchepetsa kulemera kwa ng’anjo yotentha kwambiri, kusintha kapangidwe kake, kupulumutsa zida, kupulumutsa mphamvu, komanso kukonza magwiridwe antchito.

Ntchito zosiyanasiyana mullite opepuka kutchinjiriza njerwa:

Njerwa za Mullite zopepuka zotsekemera zimagwiritsidwa ntchito makamaka pamatentha otentha pamwamba pa 1400 ℃, madenga otentha otentha, ma forehearths, maboma okonzanso, magalasi osungunulira magalasi, ma kitsulo a ceramic, ma ceramic roller kilns, ma kilns a tunnel, Mkati wamkati wamapangidwe amagetsi uvuni woyikira, ng’anjo yakufa yakona yolumikizidwa ndi mafuta, mafuta oyaka magalasi ndi ng’anjo zamagetsi zingapo zimatha kulumikizana mwachindunji ndi lawi.

Zolemba zathupi ndi zamankhwala zama mullite zokutira njerwa:

Kufotokozera / Kutsatsa Kwazinthu = 0.8 = 1.0 = 1.2
Kutentha kwamagulu (℃) 1400 1550 1600
Al2O3 (%) ≥ 50 ~ 70 65 ~ 70 79
Fe2O3 (%) ≤ 0.5 0.5 0.5
Mlingo wambiri (g / cm3) 0.8 1.0 1.2
Kupondereza mphamvu kutentha kwapakati (Mp) 3 5 7
Kutentha kwamatentha (350 ℃) W / (mk) 0.25 0.33 0.42
Kutentha kwachangu (℃) (0.2 Mp, 0.6%) 1400 1500 1600
Kubwezeretsanso kusintha kwakanthawi% (1400 ℃ × 3h) ≤0.9 ≤0.7 ≤0.5
Kutentha kwanthawi yayitali (℃) 1200 ~ 1500 1200 ~ 1550 1500-1700