Iyini Izitini Eziphikisayo?

Isitini esiphikisayoi-ceramic material evame ukusetshenziswa ezindaweni zokushisa okuphezulu ngenxa yokuntula kwayo ukuvutha futhi ngenxa yokuthi iyi-insulator ehloniphekile enciphisa ukulahlekelwa kwamandla. Isitini esiphikisayo ngokuvamile sakhiwe nge-aluminium oxide ne-silicon dioxide. Ibizwa nangokuthi "isitini somlilo."

Ukwakhiwa kwe-Refractory Clay

Ubumba obuphikisayokufanele iqukathe ingxenye ephezulu ye-silicon dioxide "engenabungozi" futhii-aluminiumi-oxide. Kufanele babe nenani elincane kakhulu lomcako oyingozi, i-magnesium oxide, i-iron oxide, ne-alkali.
I-Silicon Dioxide: I-Silicon dioxide (SiO2) ithambe cishe cishe ku-2800℉ futhi ekugcineni incibilike bese iphenduka into eyingilazi cishe ku-3200℉. Incibilika cishe ku-3300 ℉. Leli phuzu lokuthambisa eliphezulu nokuncibilika liyenza into eyinhloko yokukhiqiza izitini eziphikisayo.
I-Alumina: I-Alumina (Al2O3) inezinga lokushisa eliphakeme lokuthambisa kanye nokuncibilika kune-silicon dioxide. Iyancibilika cishe ku-3800 ℉. Ngakho-ke, isetshenziswa ngokuhlanganiswa ne-silicon dioxide.
I-lime, i-magnesium oxide, i-iron oxide, ne-alkali: Ukuba khona kwalezi zithako eziyingozi kusiza ekwehliseni ukuthambisa nokuncibilika kwamazinga okushisa.

Izici Eziyinhloko Zezitini Eziphikisayo

Isitini esiphikisayos ngokuvamile anombala ophuzi-mhlophe
Banokumelana nokushisa okuhle kakhulu namandla amakhulu okucindezela
Ukwakheka kwawo kwamakhemikhali kuhluke kakhulu kwezitini ezivamile
Izitini eziphikisayo ziqukethe cishe u-25 kuya ku-30% we-alumina kanye no-60 kuya ku-70% we-silica
Futhi aqukethe i-oxides ye-magnesium, i-calcium, ne-potassium
Izitini eziphikisayoingasetshenziswa ukwakha iziko, iziko, njll.
Ziyakwazi ukumelana namazinga okushisa afinyelela ku-2100 degrees Celsius
Zinamandla okushisa amangalisayo esiza izakhiwo ezihlukene ukuthi zihlale zizinzile emazingeni okushisa aphezulu.

Inqubo yokukhiqiza yezitini eziphikisayo

Izitini zomlilo zenziwe ngezinqubo ezihlukahlukene zokwenza izitini, njengokujikijela udaka oluthambile, ukucindezela okushisayo, nokucindezela okomile. Ngokuya ngezinto zesitini somlilo, ezinye izinqubo zizosebenza kangcono kunezinye. Izitini zomlilo zivame ukwakhiwa zibe umumo ongunxande ezinobukhulu obungamasentimitha angu-9 ubude × amasentimitha angu-4 ububanzi (22.8 cm × 10.1 cm) nogqinsi oluphakathi kwamayintshi angu-1 no-3 amayintshi (2.5 cm kuya ku-7.6 cm).

Ukulungiswa kwezinto ezingavuthiwe:
Izinto eziphikisayo: Izinto ezisetshenziswayo ezivamile zihlanganisa i-alumina, i-aluminium silicate, i-magnesium oxide, i-silica, njll. Lezi zinto zokusetshenziswa zihlukaniswa ngokuya ngezakhiwo nezinhlobo ezidingekayo.
Isibopho: Ubumba, i-gypsum, njll. kuvame ukusetshenziswa njengesibophezelo ukusiza izinhlayiya zezinto ezingavuthiwe zihlangane futhi zakhe.
Ukuxuba nokugaya:
Faka izinto zokusetshenziswa ezilungisiwe emshinini wokuhlanganisa ukuze ugovuze futhi uxutshwe ukuze uqinisekise ukuthi izinto zokusetshenziswa ezihlukahlukene zixutshwe ngokugcwele futhi zixutshwe ngokulinganayo.
Izinto zokusetshenziswa ezixubile zigaywa kahle nge-grinder ukuze izinhlayiya zibe zifana futhi zibe lula.
Ukubumba:
Izinto ezisetshenziswayo ezixubile neziphansi zifakwa esikhunjeni sokubumba futhi zakhiwe ngendlela yezitini ngokuhlanganisa ukudlidliza noma ukubunjwa kwe-extrusion.
Ukomisa:
Ngemuva kokwakhiwa, izitini zidinga ukumiswa, ngokuvamile ngokumisa emoyeni noma ukomisa ekamelweni lokumisa, ukususa umswakama ezitini.
I-Sintering:
Ngemuva kokumisa, izitini zifakwa kuhhavini lezitini eziphikisayo futhi zifakwe emazingeni okushisa aphezulu ukuze zishise i-binder ezintweni zokusetshenziswa futhi zihlanganise izinhlayiya ukuze zenze isakhiwo esiqinile.
Izinga lokushisa le-sintering kanye nesikhathi kuyahlukahluka kuye ngezinto zokusetshenziswa ezahlukene kanye nezidingo, futhi ngokuvamile kwenziwa ngaphansi kwezimo eziphakeme zokushisa ezingaphezu kuka-1500 ° C.

Izinzuzo Zokusebenzisa Izitini Eziphikisayo noma Izitini Zomlilo

Ukusebenzisaizitini refractoryinikeza ithoni yezinzuzo. Ziyabiza kakhulu kunezitini ezivamile ngenxa yamakhono azo ayingqayizivele e-insulating high-end. Nokho, banikeza izinzuzo ezithile eziyingqayizivele ngokushintshanisa utshalomali lwakho olwengeziwe. Abahlinzeki Bezitini Eziyisisekelo Zokuphikisa e-India nabo baqinisekisa ukuhlinzekwa kwezitini ze-Magnesia ezweni futhi banikela ngezitini eziphikisayo ezinezinzuzo ezilandelayo:

I-Insulation enhle kakhulu
Izitini ze-Refractory zisetshenziselwa ikakhulukazi izakhiwo zabo zokuvikela ezimangalisayo. Bavimba ukungena kokushisa. Baphinde bagcine isakhiwo sikhululekile kokubili ehlobo nasebusika.

Ziqine Kunezitini Ezivamile

Izitini eziphikisayo zinamandla kunezitini ezivamile. Yingakho ziqinile kunezitini ezivamile. Zibuye zilula ngokumangalisayo.

Noma yimuphi umumo nosayizi
Abahlinzeki Bezitini Eziyisisekelo Zokuphikisa e-India nabo baqinisekisa ukuhlinzekwa kwezitini ze-Magnesia ezweni futhi banikela ngezitini ezikhanyelayo ezenziwe ngokwezifiso. Abakhiqizi abaningi nabahlinzeki banikeza izitini ezenziwe ngokwezifiso ngosayizi ofunwayo kanye nobukhulu kubathengi.

Zisetshenziselwani Izitina Ze-Refractory?

Izitini eziphikisayothola isicelo ezindaweni lapho ukufakwa kwe-thermal kubaluleke kakhulu. Lesi sibonelo sihlanganisa amaziko. Zilungele cishe zonke izimo zezulu ezimbi kakhulu. Abathuthukisi abaningi abaziwayo baze basebenzise lezi zitini kumaphrojekthi wokwakha izindlu. Ezimweni ezishisayo, izitini eziphikisayo zigcina ingaphakathi lipholile futhi izimo ezibandayo zikude. Baphinde bafudumale nendlu.
Ezintweni zasendlini, ezinjengamahhavini, ama-grill, neziko, izitini eziphikisayo ezisetshenziswayo ngokuvamile zenziwe ngobumba oluqukethe ikakhulukazi i-aluminium oxide ne-silicon dioxide, izakhi ezikwazi ukumelana namazinga okushisa aphezulu. I-Aluminium oxide inezinto ezikhanyayo, kuyilapho i-silicon dioxide iyisivikeli esihle kakhulu. Uma kune-aluminium oxide eyengeziwe ekuxubeni, izinga lokushisa elingaphezulu kwesitini lingakwazi ukumelana (ukucatshangelwa okubalulekile ekusetshenzisweni kwezimboni) futhi isitini sizobiza kakhulu. I-silicon dioxide inombala ompunga okhanyayo, kuyilapho i-aluminium oxide inombala ophuzi okhanyayo.

Kuhlale kubalulekile ukugcizelela ukuthi lapho uklama noma ukwakha izakhiwo ezihlangana nomlilo, kufanele unake ukuthi izinto ezisetshenziswayo ziyahambisana yini nemithetho yendawo. Leli inani elincane okufanele ulikhokhe ukuze ugweme ukulahlekelwa kwezinto ezibonakalayo noma izingozi ezimbi kakhulu. Kuhlale kudingekile ukufuna iseluleko kochwepheshe nabakhiqizi.