Kodi Bricks Refractory N'chiyani?

Njerwa yotsutsandi zida za ceramic zomwe nthawi zambiri zimagwiritsidwa ntchito m'malo otentha kwambiri chifukwa chosowa kuyaka komanso chifukwa ndi insulator yabwino yomwe imachepetsa kutaya mphamvu. Njerwa zowonongeka nthawi zambiri zimakhala ndi aluminium oxide ndi silicon dioxide. Amatchedwanso "njerwa yamoto."

Mapangidwe a Refractory Clay

Refractory dongoiyenera kukhala ndi gawo lalikulu la silicon dioxide "yopanda vuto" komansoaluminiyamuoxide. Ayenera kukhala ndi laimu wovulaza pang'ono, magnesium oxide, iron oxide, ndi alkali.
Silicon Dioxide: Silicon dioxide (SiO2) imafewa pafupifupi 2800 ℉ ndipo pamapeto pake imasungunuka ndikusanduka chinthu chagalasi pafupifupi 3200 ℉. Imasungunuka pafupifupi 3300 ℉. Kufewetsa ndi kusungunuka kwapamwamba kumeneku kumapangitsa kukhala chinthu chachikulu chopangira njerwa zomangira.
Alumina: Alumina (Al2O3) ali ndi kutentha kwapamwamba komanso kusungunuka kuposa silicon dioxide. Imasungunuka pafupifupi 3800 ℉. Chifukwa chake, amagwiritsidwa ntchito limodzi ndi silicon dioxide.
Lime, magnesium oxide, iron oxide, ndi alkali: Kukhalapo kwa zinthu zovulazazi kumathandiza kuchepetsa kufewetsa ndi kusungunuka kwa kutentha.

Zofunika Kwambiri za Njerwa Zotsutsa

Njerwa yotsutsaNthawi zambiri amakhala achikasu-woyera
Iwo ali kwambiri kutentha kukana ndi mphamvu compressive kwambiri
Kapangidwe kake kake ndi kosiyana kwambiri ndi njerwa zanthawi zonse
Njerwa zosakanizika zimakhala ndi aluminiyamu 25 mpaka 30% ndi silika 60 mpaka 70%.
Amakhalanso ndi oxides wa magnesium, calcium, ndi potaziyamu
Njerwa zomangiraangagwiritsidwe ntchito pomanga kilns, ng'anjo, etc.
Amatha kupirira kutentha mpaka madigiri 2100 Celsius
Ali ndi mphamvu yotentha kwambiri yomwe imathandiza kuti zinthu zosiyanasiyana zikhale zokhazikika pakatentha kwambiri.

Kupanga njerwa zomangira njerwa

Njerwa zamoto zimapangidwa ndi njira zosiyanasiyana zoumba njerwa, monga kuponya matope ofewa, kukanikiza kotentha, ndi kukanikiza kowuma. Malingana ndi zinthu za njerwa yamoto, njira zina zidzagwira ntchito bwino kuposa zina. Njerwa zamoto nthawi zambiri zimapangidwa kukhala mawonekedwe amakona anayi ndi miyeso ya mainchesi 9 m'litali × 4 mainchesi (22.8 cm × 10.1 cm) ndi makulidwe apakati pa 1 inchi ndi mainchesi 3 (2.5 cm mpaka 7.6 cm).

Kukonzekera zopangira:
Zipangizo zokanira: Zida zodziwika bwino zimaphatikizapo alumina, aluminiyamu silicate, magnesium oxide, silika, ndi zina zotero. Zopangira izi zimagawidwa molingana ndi zofunikira ndi mitundu.
Binder: Dongo, gypsum, ndi zina zambiri zimagwiritsidwa ntchito ngati chomangira kuti tinthu tating'onoting'ono tiphatikize ndi kupanga.
Kusakaniza ndi kugaya:
Ikani zopangira zokonzeka muzosakaniza zosakaniza zosakaniza ndi kusakaniza kuti zitsimikizidwe kuti zipangizo zosiyanasiyana zimasakanizidwa bwino komanso zosakanikirana.
Zosakaniza zosakaniza zimadulidwa bwino kupyolera mu chopukusira kuti tinthu tating'ono ting'onoting'ono tifanane ndi bwino.
Kuumba:
Zosakaniza ndi nthaka zopangira zimayikidwa mu nkhungu ndikupangidwira mu mawonekedwe a njerwa kupyolera mu kugwedezeka kwa compaction kapena extrusion molding.
Kuyanika:
Pambuyo popanga, njerwa zimafunika kuumitsa, kawirikawiri ndi kuumitsa mpweya kapena kuumitsa m'chipinda chowumitsa, kuchotsa chinyezi ku njerwa.
Sintering:
Pambuyo kuyanika, njerwazo zimayikidwa mu ng'anjo ya njerwa zokanira ndikuziyika pa kutentha kwakukulu kuti ziwotche chomangira muzopangira ndikuphatikiza tinthu tating'onoting'ono kuti tipange cholimba.
Kutentha kwa sintering ndi nthawi kumasiyana malinga ndi mitundu yosiyanasiyana ya zipangizo ndi zofunikira, ndipo nthawi zambiri zimachitika pansi pa kutentha kwakukulu kuposa 1500 ° C.

Ubwino Wogwiritsa Ntchito Njerwa Zowonongeka kapena Njerwa Zoyaka Moto

Kugwiritsanjerwa zomangiraimapereka zabwino zambiri. Ndiwokwera mtengo kuposa njerwa wamba chifukwa cha luso lawo lapadera lotsekera. Komabe, amapereka zabwino zina zapadera posinthanitsa ndi ndalama zanu zowonjezera. Basic Refractory Bricks Suppliers ku India amawonetsetsanso kuti Magnesia Bricks akupezeka mdziko muno ndipo amapereka njerwa zomangira ndi zabwino izi:

Insulation yabwino kwambiri
Njerwa za Refractory zimagwiritsidwa ntchito kwambiri popanga zinthu zoziziritsa kukhosi. Amaletsa kulowa kwa kutentha. Amapangitsanso dongosololi kukhala lomasuka m'chilimwe ndi m'nyengo yozizira.

Zamphamvu Kuposa Njerwa Zokhazikika

Njerwa zomangira ndi zamphamvu kuposa njerwa wamba. N’chifukwa chake zimakhala zolimba kuposa njerwa zokhazikika. Amakhalanso opepuka modabwitsa.

Mawonekedwe Ndi Kukula Kulikonse
Basic Refractory Bricks Suppliers ku India amaonetsetsanso kuti Magnesia Bricks akupezeka mdziko muno ndipo amapereka njerwa zomangira makonda. Ambiri opanga ndi ogulitsa amapereka njerwa makonda mu kukula ndi miyeso yomwe mukufuna kwa ogula.

Kodi Njerwa za Refractory Zimagwiritsidwa Ntchito Bwanji?

Njerwa zomangirapezani ntchito m'malo omwe kutchinjiriza kwamafuta ndikofunikira kwambiri. Chitsanzochi chimaphatikizapo ng'anjo. Iwo ndi abwino kwa pafupifupi onse nyengo yoopsa. Madivelopa ambiri odziwika amagwiritsa ntchito njerwazi pomanga nyumba. Kumalo otentha, njerwa zomangira zimasunga mkati mozizira komanso kuzizira. Amapangitsanso nyumba kutentha.
Kwa zipangizo zapakhomo, monga mauvuni, magalasi, ndi poyatsira moto, njerwa zomangira zomwe zimagwiritsidwa ntchito nthawi zambiri zimakhala zadongo zomwe zimakhala ndi aluminium oxide ndi silicon dioxide, zinthu zomwe zimatha kupirira kutentha kwakukulu. Aluminium oxide imakhala ndi zinthu zowunikira, pomwe silicon dioxide ndi insulator yabwino kwambiri. Kuchuluka kwa aluminium oxide komwe kumakhala kosakanikirana, kutentha kwa njerwa kumatha kupirira (chinthu chofunikira kwambiri pakugwiritsa ntchito mafakitale) ndipo njerwayo imakhala yokwera mtengo kwambiri. Silicon dioxide ili ndi mtundu wotuwa, pomwe aluminium oxide ili ndi mtundu wachikasu wopepuka.

Ndikofunika nthawi zonse kutsindika kuti popanga kapena kumanga nyumba zomwe zimakhudzidwa ndi moto, muyenera kusamala ngati zipangizo zomwe zimagwiritsidwa ntchito zikugwirizana ndi malamulo a m'deralo. Uwu ndi mtengo wochepa woti ulipire kuti upewe kutaya zinthu kapena ngozi zowopsa. Nthawi zonse ndikofunikira kufunafuna malangizo kwa akatswiri ndi opanga.