Kalabu ya silicon yopangidwa ndi Reaction-sintered ndi mtundu watsopano wa ziwiya zadothi zapamwamba, zomwe zimakhala ndi mphamvu zambiri, kuuma kwambiri, kukana kuvala bwino komanso kukana dzimbiri, ndipo zimagwiritsidwa ntchito kwambiri mu zitsulo, petrochemical, zamagetsi, ndege ndi zina. Chogulitsachi chili ndi silicon carbide abrasive carbon black, graphite ndi zowonjezera zosiyanasiyana, pogwiritsa ntchito njira zouma, extrusion kapena kuthira kuti apange mawonekedwe obowola, kenako titsatirani pamodzi kuti timvetse njira yopangira ya reactive sintering silicon carbide!
Kabide wa silikoni wochita zinthu mopupuluma. Kapangidwe kake ndi njira yaukadaulo yokhwima pambuyo pa mayeso ambirimbiri ndi wopanga kwa zaka zambiri kuti alimbikitse njira zopangira zopangira ndi njira zopangira, makamaka njira yapadera yopititsira patsogolo kupupuluma.
Mu zomwe zanenedwa mu buku loyamba, gawo lolemera la ufa wa silicon carbide ndi magawo 5 ~ 8, wakuda wa kaboni ndi magawo 0.5-1.5, graphite ndi magawo 1-1.5, ndipo chomangira ndi magawo 0.1-0.5. Pakati pawo, kukula kwa grain gradient ya silicon carbide ndi magawo 2-3. methyl cellulose ndi ufa wa PVA wa gazelle zinayikidwa mu kuchuluka koyenera kwa magawo 0.1-0.5 motsatana, ndipo yankho lowonekera linapezeka mutatenthetsa.
1. Sakanizani mitundu yonse ya ufa, zomatira ndi njira zokonzedwa motsatira njira yopangirayi ndipo sakanizani bwino.
2, yeretsani chotsukira nkhungu, fikirani 0.1Mpa, ikani matope osakanikirana ndi mphamvu. Patapita nthawi inayake, matopewo amatulutsidwa ndipo chopanda kanthucho chimachotsedwa. Sungani pa madigiri 30-70 kwa maola 18-20 kuti chiume.
3. Dulani chivundikirocho molingana ndi zofunikira za chojambulacho.
4, ikani reaction sintering billet mu uvuni, onjezerani kulemera kwa magawo 1-3 a silicon yachitsulo, vacuum sintering. Njirayi imagawidwa m'magawo otentha otsika 0-700, osungidwa kwa maola 3-5; Kutentha kwapakati 700-1400, sungani kwa maola 4-6; Sungani kutentha kwakukulu 1400-2200 kwa maola 5-7. Thirani kutentha pansi pa 150, imitsani uvuni ndikutsegula uvuni.
5, chopukusira cha mankhwala opukusira mchenga pamwamba pa silicon slag, chokhala ndi chopukusira cha mchenga.
6, zinthu zotsukira ma oxide mu uvuni wa ma oxide, maola 24 mpaka 1350, kuziziritsa kwachilengedwe. Tulutsani, yang'anani ndikuyika mufiriji.
Zipangizo zopangira ndi kuchuluka komwe kwagwiritsidwa ntchito ndi njira yopangirayi ndi zasayansi komanso zomveka, kotero kuti malo opanda kanthu ali ndi malo okwanira osowa ndipo malo opanda kanthu ali ndi kuchulukana kwabwino; Kutentha kwabwino kwa kutentha, kutentha ndi nthawi yogwira ntchito zimatsimikizira mphamvu yopindika kwambiri ya chinthucho. Kugwira ntchito kwakukulu ndi khalidwe la njira iyi kwafika pamlingo wapamwamba wapadziko lonse lapansi. Zizindikiro zake zazikulu ndi izi:
Kukhazikitsa kwapadera kwa silicon carbide
Chitsanzo 1 Njira yopangira ma bundle a silicon carbide opangidwa ndi reaction-sintered:
1, zomatira ziyenera kutengedwa ndi kulemera kwa magawo 0.3, kuwonjezera madzi pang'ono, kusakaniza mofanana, kulemera kwa magawo 6.8 a ufa wa silicon carbide (kukula kwa tinthu tating'onoting'ono ta 90-30m ta magawo 3.8, 30-0.8m ta magawo 3), kaboni wakuda gawo limodzi, wakuda
2. Mukathira, choyamba yeretsani nkhungu yomwe mwagwiritsa ntchito, gwirizanitsani nkhunguyo, yikonzeni ndi zomangira, tulutsani matope mu thankiyo ndi mphamvu, dzazani thankiyo ndi nayitrogeni wa 0.1Mpa, thirani mphamvu, ndikukankhira matopewo mu nkhunguyo. Mukatha ola limodzi, matopewo amatulutsidwa, ndipo patatha maola 6, nkhunguyo imachotsedwa, zinthu zopanda kanthu zimachotsedwa, ndipo chipinda choumitsira chimauma. 30-70, maola 18-20 kuti muchotse. 3. Mukakonza malo opanda kanthu, choyamba yang'anani ngati malo opanda kanthuwo akukwaniritsa zofunikira pa kapangidwe kake. Mukakwaniritsa zofunikira, konzani malo opanda kanthuwo malinga ndi chithunzicho. Mukayang'anitsitsa, tumizani ku chipinda choumitsira chotentha kwambiri.
4. Madzi a billet yothira madzi akafika pa 1%, ichotseni, yeretsani billet ndi mpweya wouzira ndikuyilemera. Onjezani magawo 2.9 a silicon metal. Nayitrogeni ikhoza kupopedwa mu vacuum sintering. Njira yothira madzi pa kutentha kochepa kwa 700 kwa maola 4; Kutentha kwapakati 1400, maola 5; Kutentha kwakukulu 2200, maola 6. Kutentha kukatsika kwa maola 12 ndikufikira 150, siyani kugwira ntchito mu uvuni ndikutsegula uvuni.
5. Pambuyo poti mankhwala oyeretsera mchenga atuluka, silicon standard Chartered pamwamba pake imaphwanyidwa ndikuphwanyidwa ndi mchenga.
6. Cholinga cha zinthu zotsukira okosijeni ndikuchotsa ma oxide omwe amapangidwa panthawi yotsukira. Chogulitsacho chimatenthedwa mpaka madigiri 1350 kwa maola 24 mu uvuni wa okosijeni kenako chimaziziritsidwa mwachilengedwe. Pambuyo pochotsa, chimayikidwa mu malo osungira kudzera mu kuyang'aniridwa.
Zipangizo zopangira ndi kuchuluka komwe kwagwiritsidwa ntchito ndi njira yopangirayi ndi zasayansi komanso zomveka, kotero kuti malo opanda kanthu ali ndi malo okwanira osowa ndipo malo opanda kanthu ali ndi kuchulukana kwabwino; Kutentha bwino, kutentha ndi nthawi yogwira ntchito bwino zimaonetsetsa kuti chinthucho chili ndi mphamvu yopindika kwambiri. Kugwira ntchito kwakukulu ndi khalidwe la zinthu zopangidwa ndi njira iyi zafika pamlingo wapamwamba padziko lonse lapansi.
Njira yopangira silicon carbide yogwira ntchito yopangira zinthu zosinthika, ngati mukufuna zambiri, chonde musazengereze kulankhulana nafe!
Nthawi yotumizira: Juni-13-2023