Chubu cha ceramic cha silicon carbide: 'mtsempha wamagazi wa mafakitale' wosaoneka

M'mafakitale ambiri, mapaipi ena amapirira mwakachetechete mikhalidwe yovuta kwambiri yogwirira ntchito: kutentha kwambiri, dzimbiri lamphamvu, ndi kuwonongeka kwakukulu. Ndiwo 'mitsempha yamagazi yamafakitale' yomwe imatsimikizira kupanga kosalekeza komanso kokhazikika. Lero tikambirana za yabwino kwambiri mu mtundu uwu wa mapaipi -chitoliro cha ceramic cha silicon carbide.
Anthu ambiri amaganiza za "kufooka" akamva "ceramic". Koma ma ceramic a silicon carbide a mafakitale amatsata "kuuma" ndi "kukhazikika". Kuuma kwake ndi kwakukulu kwambiri, ndipo kukana kwake kukalamba kumaposa kwambiri kwa zitsulo ndi rabara. Imatha kupirira kuwonongeka kwa madzi mwachangu komwe kumakhala ndi tinthu tolimba kwa nthawi yayitali; Makhalidwe ake ndi okhazikika kwambiri ndipo imatha kupirira kuwonongeka kwa ma asidi amphamvu osiyanasiyana, maziko olimba, ndi mchere; Nthawi yomweyo, imatha kugwira ntchito mokhazikika kutentha kwambiri ndikupirira kutentha mpaka 1350 ℃. Kuphatikiza apo, ili ndi kutentha kwabwino komanso malo osalala, zomwe zimathandiza kuchepetsa kukana mayendedwe ndi kugwiritsa ntchito mphamvu.
Mwachidule, machubu a ceramic a silicon carbide apangidwa kuti athetse mavuto oyendera a "otentha, okwiyitsa, komanso owononga". Pakunyamula zinyalala ndi matope m'mafakitale monga migodi, zitsulo, ndi mphamvu ya kutentha, zimatha kukulitsa kwambiri moyo wa mapaipi ndikuchepetsa nthawi yoti agwiritsidwe ntchito; Pakunyamula zinthu zowononga m'mafakitale opanga mankhwala ndi kuteteza chilengedwe, zitha kuonetsetsa kuti ntchitoyo ikuyenda bwino kwa nthawi yayitali ndikuchepetsa chiopsezo cha kutayikira. Ngakhale ndalama zoyambira zitha kukhala zapamwamba, zabwino zomwe zingabwere nthawi yayitali ndizofunika kwambiri poganizira bwino kuchepetsa kukonza, kuchepetsa kugwiritsa ntchito mphamvu, ndikuwonetsetsa kuti papangidwa.

Kupanga machubu a ceramic a silicon carbide ndi ntchito yovuta. Nthawi zambiri, ufa wa silicon carbide umasakanizidwa ndi zowonjezera pang'ono kuti upange "thupi lobiriwira" lokhala ndi mphamvu inayake, kenako umasungunuka kutentha kwambiri kuti zinthuzo zikhale zolimba komanso zolimba. Malinga ndi zosowa zosiyanasiyana, njira zosiyanasiyana monga kusungunuka kwa reaction ndi kusungunuka kopanda kupanikizika zidzagwiritsidwa ntchito. Kuti zikhale zosavuta kukhazikitsa, mapaipi omalizidwa nthawi zambiri amakhala ndi zinthu zolumikizira monga zitsulo.
Ngakhale kuti machubu a ceramic a silicon carbide amagwira ntchito bwino kwambiri, akadali zinthu za ceramic zomwe zimafunika "kusamalira pang'ono" zikagwiritsidwa ntchito. Kuyika ndi kunyamula kuyenera kuchitidwa mosamala kuti kupewe kugundana kolimba; Onetsetsani kuti chithandizo chokwanira komanso kukulitsa kutentha kuti mupewe katundu wowonjezera womwe umayambitsidwa ndi kupsinjika kwakunja kapena kusintha kwa kutentha; Musanasankhe zipangizo, ndibwino kukhala ndi injiniya waluso kuti ayese njira yeniyeni, kutentha, ndi kupanikizika kuti apeze yankho loyenera.
Ponseponse, machubu a ceramic a silicon carbide afika pamlingo wapamwamba kwambiri mu "kuuma" ndi "kukhazikika", kupereka mayankho odalirika pamikhalidwe yovuta kwambiri yotumizira, ndipo ndi "ngwazi zosaoneka".