Amakuru

Intangiriro

Mu nganda zifite ubushyuhe bwo hejuru - kuva mu gukora ibyuma kugeza ku bicuruzwa by’ibirahure - ibikoresho bivunika ni inkingi y’ibikorwa byiza kandi byiza. Muri ibyo,mullite amatafariuhagarare kubidasanzwe bidasanzwe byubushyuhe, kurwanya ruswa, nimbaraga za mashini. Gusobanukirwa ibyiciro byabo nibisabwa nibyingenzi kubucuruzi bushaka guhindura ibikoresho ubuzima bwabo no kugabanya ibiciro byakazi. Iyi ngingo isenya ubwoko bwingenzi bwamatafari ya mullite nuburyo bukoreshwa kwisi, bigufasha gufata ibyemezo byuzuye kubyo ukeneye inganda.

Gutondekanya amatafari ya Mullite

Amatafari ya mullite ashyirwa mubyiciro hashingiwe kubikorwa byo gukora no kongeramo ibice, buri kimwe kijyanye nibisabwa n'inganda.

1. Amatafari ya Mullite

Yakozwe mu kuvanga alumina na silika-isukuye cyane, gushushanya imvange, no kuyishiramo ubushyuhe buri hejuru ya 1600 ° C, amatafari ya mullite acumuye yirata imiterere yuzuye kandi ifite ubukana buke (mubisanzwe munsi ya 15%). Izi mico zibaha kwihanganira kwambara neza no guhangana nubushyuhe bwumuriro-nibyiza kubidukikije bifite ihindagurika ryubushyuhe. Ibikoreshwa bisanzwe birimo ibicanwa by'itanura rya ceramic, itanura riturika rishyushye, hamwe nibyumba byo gutwika.

2. Amatafari ya Mullite yahujwe

Yakozwe no gushonga ibikoresho bibisi (alumina, silika) mu itanura ryamashanyarazi arc (hejuru ya 2000 ° C) no guta imvange yashongeshejwe mubibumbano, amatafari ya mullite yahujwe afite urugero rwumwanda muke kandi ufite isuku ya kirisiti. Kurwanya kwabo kwangiza isuri yimiti (urugero, kuva mubirahure bishongeshejwe cyangwa ibishishwa) bituma bahitamo icyambere cyo kuvugurura itanura ry ibirahure, ubwogero bwikirahure bureremba, nibindi bikoresho byerekanwa nibitangazamakuru byashongeshejwe.

3. Amatafari yoroheje ya Mullite

Byakozwe mugushyiramo ibintu bikora pore (urugero, ibiti, grafite) mugihe cyo kubyara, amatafari mullite yoroheje afite ububobere bwa 40-60% nubucucike buri hasi cyane kuruta ubwoko bwacumuye cyangwa bwahujwe. Ibyiza byabo byingenzi ni ubushyuhe buke (0.4–1.2 W / (m · K)), bigabanya gutakaza ubushyuhe. Zikoreshwa cyane nk'ibikoresho byo kubika mu itanura, itanura, n'ibikoresho byo gutunganya ubushyuhe, aho uburemere n'imbaraga byihutirwa.

4. Amatafari ya Zircon Mullite

Mugushira zircon (ZrSiO₄) mukuvanga ibikoresho fatizo, amatafari ya zircon mullite yunguka imikorere yubushyuhe bwo hejuru - irashobora kwihanganira ubushyuhe bugera kuri 1750 ° C kandi ikarwanya isuri ituruka kumashanyarazi. Ibi bituma babera ahantu habi nko gutanura ibyuma bidafite fer fer (urugero, kugabanya aluminiyumu) hamwe na sima rotary itanura.

Porogaramu ya Mullite Amatafari

Amatafari ya mullite ahindagurika atuma ari ingenzi mu nganda nyinshi zubushyuhe bwo hejuru.

Inganda zibyuma

Umusaruro wibyuma birimo ubushyuhe bukabije (kugeza 1800 ° C) hamwe nuduce twangirika. Amatafari ya mullite yometse kumurongo ushushe, aho guhangana nubushyuhe bwumuriro birinda gucika vuba / gukonja. Impinduka zashyizwe hamwe zirinda urwego na tundish, kugabanya isuri no kongera ibikoresho byubuzima 20-30% ugereranije nubuvanganzo gakondo.

Inganda za sima

Amatanura ya sima azenguruka kuri 1450–1600 ° C, hamwe na alkaline ya alkaline ishobora guteza isuri ikomeye. Amatafari ya Zircon mullite atondekanya itanura ryaka, kurwanya ibitero bya alkali no gukomeza ubusugire bwimiterere. Amatafari yoroheje ya mullite nayo akora nk'urwego rwo kubika, kugabanya ingufu ku 10-15%.

3. Inganda zikirahure

Ikirahure gishongeshejwe (1500–1600 ° C) kirashobora kwangirika cyane, bigatuma amatafari ya mullite yahujwe akenewe mu kuvugurura itanura ry’ibirahure no gutondekanya tank. Birinda kwanduza ibirahuri no kwagura itanura kugeza kumyaka 5-8, kuva kumyaka 3-5 hamwe nibindi bikoresho.

4. Izindi nganda

Mu gushonga ibyuma bidafite fer (aluminium, umuringa), amatafari ya zircon mullite arwanya ibyuma bishongeshejwe hamwe nisuri. Muri peteroli, amatafari ya mullite yometse kumurongo ucana itanura kubera ubushyuhe bwumuriro. Mububumbyi, amatafari mullite yoroheje yubaka itanura, bigabanya gukoresha ingufu.

Umwanzuro

Amatafari ya mullite 'ubwoko butandukanye-bwacumuye, buvanze, bworoshye, na zircon - bujuje ibyifuzo byihariye byinganda zubushyuhe bwo hejuru. Kuva mu kuzamura itanura ryicyuma kugeza igihe cyo kwagura itanura ryikirahure, bitanga inyungu zifatika: igihe kirekire cyibikoresho byo kubaho, ibiciro byingufu nkeya, no kugabanya igihe. Mugihe inganda zikurikirana umusaruro mwinshi kandi urambye, amatafari ya mullite azakomeza kuba igisubizo cyingenzi. Hitamo ubwoko bukwiye bwa porogaramu yawe, hanyuma ufungure ubushobozi bwabo bwuzuye.