M'zaka zaposachedwapa, kufunikira kwa zipangizo zosamalira chilengedwe komanso zogwira ntchito bwino kwakhala kukukula m'mafakitale osiyanasiyana. Chimodzi mwa zinthu zatsopano zomwe zakopa chidwi cha ofufuza ndi mainjiniya ndi ziwiya za uchi. Zinthuzi zili ndi kapangidwe kake ka uchi wapadera, zomwe zimapereka zabwino zambiri komanso kusinthasintha kwa ntchito zake. Nkhani yotsatirayi ikupereka kufufuza kwakuya kwa ziwiya za uchi, kukambirana za mitundu yawo, makhalidwe awo, kapangidwe ka mankhwala, njira yokonzekera, ndi ntchito zambiri m'mafakitale monga magalimoto, mankhwala, mphamvu zamagetsi, ndi zina zambiri. Pomvetsetsa kuthekera kwa ziwiya za uchi, titha kugwiritsa ntchito bwino ubwino wake ndikukonza njira yopezera tsogolo lokhazikika komanso logwira ntchito bwino m'magawo osiyanasiyana.
1、Kodi Uchi wa Ceramics ndi Chiyani?
Uchi wa ceramic ndi chinthu chatsopano cha ceramic chokhala ndi mawonekedwe ofanana ndi uchi. Poyamba chinkagwiritsidwa ntchito poyeretsa utsi wa magalimoto ang'onoang'ono, ndipo tsopano chikugwiritsidwa ntchito kwambiri m'mafakitale monga mankhwala, magetsi, zitsulo, mafuta, zamagetsi, ndi makina, ndi ntchito zambiri komanso zodalirika. Uchi wa ceramic ukhoza kupangidwa kuchokera ku zipangizo zosiyanasiyana, makamaka kuphatikizapo cordierite, mullite, alumina titanate, activated carbon, silicon carbide, activated alumina, zirconia, silicon nitride, ndi ma matrices ophatikizika.
2、Mitundu ya Zitsulo za Uchi
Zitsulo za uchi zitha kugawidwa m'magulu anayi akuluakulu kutengera momwe zimagwiritsidwira ntchito: malo osungira kutentha, zipangizo zopakira, zonyamulira zotengera, ndi zipangizo zosefera.
Malo osungiramo kutentha a ceramic a uchi ali ndi mphamvu yotenthetsera yoposa 1000 kJ/kg, ndipo kutentha kwakukulu kogwira ntchito ndi osachepera 1700℃. Amatha kusunga mafuta opitilira 40% mu uvuni monga zotenthetsera, ma uvuni ophikira, ma uvuni osakanikirana, ndi ma uvuni osweka, kuwonjezera kupanga ndi kupitirira 15%, ndikuchepetsa kutentha kwa utsi wotuluka kufika pansi pa 150℃.
Zipangizo zopakira za ceramic za uchi zimakhala ndi malo akuluakulu komanso amphamvu kuposa zipangizo zina zopakira, zomwe zimapangitsa kuti pakhale kufalikira kwa mpweya ndi madzi ofanana, kuchepetsa kukana kwa bedi, kugwira ntchito bwino, komanso kukhala ndi moyo wautali. Zimagwiritsidwa ntchito ngati zipangizo zopakira m'mafakitale opanga mafuta, mankhwala, ndi mankhwala abwino ndipo zimayenda bwino kwambiri.
Zitsulo za uchi zimakhala zabwino kwambiri zikagwiritsidwa ntchito ngati zoyambitsa. Pogwiritsa ntchito zipangizo za uchi ngati zonyamulira ndikugwiritsa ntchito zipangizo zapadera zokutira, zimakonzedwa ndi zitsulo zamtengo wapatali, zitsulo zapadziko lapansi zosowa, ndi zitsulo zosinthira, zomwe zimapangitsa kuti zikhale ndi mphamvu zambiri zoyambitsa zinthu, kutentha kwabwino, moyo wautali, komanso mphamvu zambiri.
3、Makhalidwe a Uchi wa Zitsulo za Uchi
Mphamvu kwambiri, kukana kutentha kwambiri, kukana dzimbiri, komanso kukana kuwonongeka zimapangitsa kuti ziwiya zadothi za uchi zikhale zoyenera m'malo osiyanasiyana oteteza chilengedwe. Zina mwa zinthuzi ndi izi:
Malo okwera kwambiri
Kuchuluka kwa porosity ndi mainchesi ofanana a pores
Kutsika kwa kuthamanga kwa magazi
Kuchuluka kwa kutentha kochepa
Kugwedezeka kwakukulu kwa kutentha ndi kukana kugwedezeka
Kukana kwambiri dzimbiri la mankhwala (anti-acid ≥99.8%)
Mphamvu yopondereza kwambiri
4、Kuphatikizika kwa Mankhwala a Uchi wa Zitsulo za Uchi
Uchi wa ceramic nthawi zambiri umapangidwa kuchokera ku kaolin, talc, ufa wa aluminiyamu, ndi dongo. Masiku ano, powonjezera zeolite ndi zinthu zina zotsutsa, zinthu zina zitha kupezeka pazinthu izi.
Zipangizo zomangira nyumba (MOC):
Cordierite
Kapangidwe ka mankhwala a Cordierite:
Aluminiyamu: 35.2±1.5%
Silika: 50.9±1.5%
Magnesia: 13.9±1.5%
5、Njira Yokonzekera Uchi wa Zitsulo Zadothi
Zitsulo za uchi zimatha kupangidwa kuchokera ku zinthu zosiyanasiyana. Zipangizo zazikulu zimaphatikizapo cordierite, mullite, aluminium titanate, activated carbon, silicon carbide, activated alumina, zirconia, silicon nitride, ndi zinthu zina za cordierite-mullite ndi cordierite-aluminum titanate.
Pambuyo popanga ufa wa kaboni wopangidwa ndi activated kapena granules kukhala ceramic ya uchi, mphamvu yoyeretsera ndi kuchiza madzi otayika imakula kwambiri, makamaka mumakampani opanga mankhwala kuti achotse zinyalala, kutaya madzi m'thupi, komanso kuchotsa utoto wa maantibayotiki, mahomoni, mavitamini, jakisoni wa nucleic acid, ndi jakisoni wina ndi mankhwala ena. Pamene ceramic ya uchi imapangidwa kudzera mu extrusion, zowonjezera zosiyanasiyana ziyenera kuwonjezeredwa kuzinthu zazikulu zopangira kuti thupi ladothi likhale lolimba komanso losasunthika. Zowonjezera izi zimaphatikizapo makamaka zomangira, pulasitiki, zotulutsa mpweya, mafuta odzola, ndi zonyowetsa. Kuphatikiza apo, palinso zosungira madzi, zomangira zoteteza, zoteteza kutentha, zoteteza ku colloidal, ndi zotupa. Pakadali pano, starch, carboxymethyl cellulose, ndi polyvinyl alcohol zimagwiritsidwa ntchito kwambiri ngati zomangira, mafuta a tung ndi stearic acid ngati zopaka, ndi glycerin ngati pulasitiki.
6、Kugwiritsa Ntchito Zitsulo Za Uchi
Zonyamulira Zothandizira
Zikagwiritsidwa ntchito ngati zonyamulira zotulutsira utsi, zoumba za uchi zimagwiritsidwa ntchito makamaka poyeretsa utsi wa magalimoto, kuyeretsa mpweya wa boiler flue (NOx), kuchotsa fungo la utsi wa mafakitale, komanso kuchotsa mpweya woopsa komanso woopsa. Zoumba za uchi zomwe zimagwiritsidwa ntchito poyeretsa utsi wa magalimoto makamaka ndi zoumba za uchi za cordierite zokutidwa ndi γ-Al2O3.
Mipando ya uvuni yosasunthika
Mipando ya ceramic ya uchi yopangidwa ndi uchi ndi yopepuka ndi 60%-75% poyerekeza ndi mipando yachikhalidwe ya khitchini, zomwe zimapangitsa kuti kutentha kutenthe mwachangu komanso kuyaka mwachangu. Kugwiritsa ntchito ceramic ya uchi ngati zothandizira kuwombera ma ferrite kapena zida zina zamagetsi kumathandiza kukonza magwiridwe antchito a zinthuzo.
Zosefera zoyendera khoma
Zitsulo zozungulira za uchi zokhala ndi makoma ochepa komanso zoboola zingagwiritsidwe ntchito kusefa ndi kuyeretsa tinthu ta kaboni mu mpweya wotulutsa utsi wa injini ya dizilo (pafupifupi 500℃).
7、Pomaliza, zoumba za uchi ndi zinthu zogwiritsidwa ntchito m'njira zosiyanasiyana komanso zatsopano zokhala ndi kapangidwe kapadera ka uchi komwe kamapereka zabwino zosiyanasiyana. Zimagwiritsidwa ntchito m'mafakitale osiyanasiyana, kuphatikizapo magalimoto, mankhwala, mphamvu zamagetsi, zitsulo, mafuta, zamagetsi, ndi makina. Makhalidwe awo abwino kwambiri, monga mphamvu yayikulu, kukana kutentha kwambiri, kukana dzimbiri, komanso kukana kuwonongeka, zimawapangitsa kukhala oyenera kugwiritsidwa ntchito zosiyanasiyana, kuphatikiza malo osungira kutentha, zida zonyamulira, zonyamulira zothandizira, ndi zida zosefera. Ndi kupita patsogolo kosalekeza mu sayansi ya zinthu komanso kufunikira kwakukulu kwa zinthu zosamalira chilengedwe komanso zogwira ntchito bwino, zoumba za uchi mwina zidzachita gawo lofunika kwambiri m'mafakitale osiyanasiyana, ndikulonjeza tsogolo labwino pakukula kwawo ndi ntchito zawo.
Nthawi yotumizira: Juni-11-2026