Silicon carbide da aka yi da martani wani sabon nau'in tukwane ne na fasaha mai ƙarfi, wanda ke da ƙarfi mai ƙarfi, ƙarfin ƙarfi, juriya mai kyau da juriya na lalata, kuma ana amfani da shi sosai a cikin ƙarfe, petrochemical, lantarki, sararin samaniya da sauran fannoni. Samfurin da silicon carbide abrasive karin carbon baki, graphite da daban-daban Additives, ta yin amfani da bushe latsa, extrusion ko zuba hanyoyin yin porous quality, sa'an nan tare da wadannan tare fahimtar samar Hanyar amsa sintering silicon carbide!
Reactive sintering silicon carbide Ƙirƙirar ƙirar fasaha ce ta balagagge bayan dubunnan gwaje-gwajen da mai ƙirƙira ya yi na shekaru masu yawa don haɓaka ƙirar ɗanyen abu da tsarin samarwa, musamman na musamman na musamman na ci gaba da sintering.
A cikin da'awar 1 na ƙirƙira, nauyin juzu'i na silicon carbide foda shine 5 ~ 8 sassa, carbon baki shine sassan 0.5-1.5, graphite shine sassan 1-1.5, kuma ɗaure shine sassan 0.1-0.5. Daga cikin su, da hatsi size gradient silicon carbide ne sic (90-30m) 3-5 sassa, sic) 30-0.8m) 2-3 sassa. An sanya methyl cellulose da PVA foda na gazelle a cikin adadin ruwa mai dacewa 0.1-0.5 sassan bi da bi, kuma an sami bayani mai haske bayan dumama.
1. Mix kowane nau'in foda, adhesives da mafita da aka shirya bisa ga ma'auni kuma motsawa da kyau.
+ Bayan wani ɗan lokaci, za a saki slurry kuma a fitar da komai. Tsaya a 30-70 na sa'o'i 18-20 don bushewa.
3. Gyara billet bisa ga bukatun zane.
4, sanya martani sintering billet a cikin tanderun, ƙara nauyin 1-3 sassa na karfe silicon, injin sintering. An raba tsari zuwa ƙananan zafin jiki 0-700, ana kiyaye shi don 3-5 hours; Matsakaicin zafin jiki 700-1400, kiyaye 4-6 hours; Ajiye a babban zafin jiki 1400-2200 don 5-7 hours. Sauke zafin jiki a ƙasa 150 dakatar da tanderun kuma buɗe tanderun.
5, yashi ayukan iska mai ƙarfi magani nika samfurin surface silicon slag, tare da yashi ayukan iska mai ƙarfi nika.
6, samfuran maganin oxidation a cikin tanderun iskar shaka, 24 hours zuwa 1350, sanyaya yanayi. Cire, duba kuma saka cikin ajiya.
Abubuwan da ake amfani da su da kuma adadin da hanyar ƙirƙira ta yi amfani da su na kimiyya ne kuma masu ma'ana, ta yadda blank ɗin yana da wadataccen ɓoyayyen ɓoyayyen ɓoyayyiyar ɓoyayyiyar ɓoyayyiyar ɓoyayyiyar ɓarayi; Ingantacciyar ƙimar dumama, zafin jiki da lokacin riƙewa suna tabbatar da babban ƙarfin lanƙwasawa na samfurin. Babban aiki da ingancin wannan hanyar sun kai matakin ci gaba na duniya. Manyan alamominsa sune kamar haka
Reaction sintering silicon carbide takamaiman aiwatarwa
Haɓaka 1 Hanyar don kera dauki-sintered silicon carbide daure:
1, da albarkatun kasa ya dauki m nauyi na 0.3 sassa, ƙara wani adadin ruwa ko'ina motsawa, nauyi na 6.8 sassa silicon carbide foda (barbashi girman 90-30m na 3.8 sassa, 30-0.8m na 3 sassa) , carbon baki 1 part, baki
2. Lokacin da ake zubawa, da farko tsaftace gyare-gyaren da aka yi amfani da shi, daidaita ƙirar, gyara shi tare da fasteners, zana slurry daga cikin tanki tare da matsa lamba, cika tanki tare da matsi na 0.1Mpa nitrogen, aiwatar da matsa lamba, da tura slurry a cikin mold. . Bayan ya kai awa 1, an saki slurry, kuma bayan sa'o'i 6, an cire samfurin, an fitar da kayan da ba komai ba, kuma ɗakin bushewa ya bushe. 30-70, 18-20 hours don cirewa. 3. Lokacin gyara blank, da farko duba ko blank ya dace da bukatun ƙira. Lokacin saduwa da buƙatun, gyara blank bisa ga zane. Bayan dubawa, aika zuwa dakin bushewa mai zafi mai zafi.
4. Bayan danshin martanin billet din ya kai kashi 1%, cire shi, tsaftace billet tare da iska mai busa sannan a auna shi. Ƙara 2.9 sassa na silicon karfe. Ana iya zub da Nitrogen a cikin injin daskarewa. Sintering tsari a 700 ƙananan zafin jiki na 4 hours; Matsakaicin zafin jiki 1400, 5 hours; Babban zafin jiki 2200,6 hours. Lokacin da zafin jiki ya sauke sa'o'i 12 kuma ya kai 150, dakatar da aiki a cikin tanderun kuma bude tanderun.
5. Bayan samfurin maganin yashi ya fito, ma'aunin silicon Chartered a samansa yana ƙasa kuma an niƙa shi da yashi.
6. Dalilin samfurori na maganin oxyidation shine don cire oxides da aka samar a lokacin aikin sintiri. Ana ƙona samfurin zuwa 1350 na sa'o'i 24 a cikin tanderun oxidation sannan kuma a sanyaya ta halitta. Bayan an cire shi, an saka shi cikin ajiya ta hanyar dubawa.
Abubuwan da ake amfani da su da kuma adadin da hanyar ƙirƙira ta yi amfani da su na kimiyya ne kuma masu ma'ana, ta yadda blank ɗin yana da wadataccen ɓoyayyen ɓoyayyen ɓoyayyiyar ɓoyayyiyar ɓoyayyiyar ɓoyayyiyar ɓarayi; Ingantacciyar ƙimar dumama, zafin jiki da lokacin riƙewa suna tabbatar da babban ƙarfin lanƙwasawa na samfurin. Babban aiki da ingancin samfuran da wannan hanyar ke samarwa sun kai matakin ci gaba na duniya.
Abin da ke sama shine hanyar samar da siliki carbide mai amsawa, idan kuna buƙatar ƙarin bayani, da fatan za a iya tuntuɓar mu!
Lokacin aikawa: Juni-13-2023