Kukonzekera kwa ceramic silicon carbide - Njira, kugwiritsa ntchito ndi mitundu

Zida za silicon carbide zokonzedwa bwino zokonzedwa ndi Singapore Fountyl Technologies PTE Ltd., Pazonse zomwe zimafunikira zida zaumisiri zolondola kwambiri, ndikofunikira kuzindikira zovuta pakukonza silicon carbide. Ngakhale kuuma kwake kwamtengo wapatali, akadali chinthu chosasunthika chomwe chimatha kukonzedwa pogwiritsa ntchito njira za diamondi. Choncho, makina opangidwa ndi odziwa bwino ntchito ndi odziwa bwino ntchito ndi opindulitsa, chifukwa njira zolakwika zimatha kuwononga pansi pa nthaka ndi ming'alu yaying'ono yomwe ingayambitse kulephera msanga pamene chigawocho chikugwiritsidwa ntchito.

Synthetic silicon carbide:

Nthawi zambiri, silicon carbide imapangidwa pogwiritsa ntchito njira ya Acheson, yomwe imaphatikizapo kutentha mchenga wa silika ndi kaboni mpaka kutentha kwambiri mu ng'anjo ya Acheson graphite resistance. Itha kupanga ufa wosalala kapena zomangira zomangika ndipo iyenera kuphwanyidwa ndi kusidwa isanagwiritsidwe ntchito ngati ufa. Silicon carbide ikakhala mu mawonekedwe a ufa, njere za pawiri zimatha kulumikizidwa palimodzi popanga sintering kuti apange ceramic yothandiza kwambiri yomwe imagwiritsidwa ntchito mosiyanasiyana m'mafakitale ambiri opanga zinthu.

Mitundu ya silicon carbide:

Zogulitsa za silicon carbide zopangira uinjiniya wamalonda zimapangidwa m'njira zitatu. Izi ndi:

Sintered Silicon Carbide (SSC)

Nitride bonded silicon carbide (NBSC) ndi

Reactive bonded silicon Carbide (RBSC)

Mitundu ina yapawiriyi ndi monga dongo-bonded silicon carbide ndi SiAlon-bonded silicon carbide. Palinso nthunzi yamankhwala yomwe imayikidwa silicon carbide yotchedwa CVD silicon carbide, yomwe ndi mawonekedwe oyera kwambiri a pawiri.

Kuti sinter silicon carbide, m'pofunika kuwonjezera sintering wothandizira, amene amathandiza kupanga madzi gawo pa kutentha sintering, potero kumanga silicon carbide mbewu pamodzi.

Ntchito zazikulu za silicon carbide:

Silicon carbide imagwira ntchito zambiri m'mafakitale osiyanasiyana. Kuuma kwake kwakuthupi kumapangitsa kuti ikhale yabwino yopangira abrasive pogaya, honing, sandblasting ndi waterjet kudula.

Silicon carbide imatha kupirira kutentha kwambiri popanda kusweka kapena kupunduka ndipo imagwiritsidwa ntchito popanga ma disc a ceramic brake disc pamagalimoto amasewera. Amagwiritsidwanso ntchito muzovala zoteteza zipolopolo ngati zida zopangira zida komanso mphete yosindikizira pazisindikizo za shaft shaft, komwe nthawi zambiri imagwira ntchito mothamanga kwambiri ikakumana ndi zisindikizo zofananira za silicon carbide. Chimodzi mwazabwino kwambiri pakugwiritsa ntchito izi ndi kutenthetsa kwapamwamba kwa silicon carbide, komwe kumatha kuwononga kutentha komwe kumapangidwa ndi mawonekedwe a friction.

Kuuma kwapamwamba kwa zinthuzo kumapangitsa kuti zigwiritsidwe ntchito pamakina ambiri omwe amafunikira kutsetsereka kwakukulu, kukokoloka, komanso kuvala zowononga. Nthawi zambiri izi zitha kugwiritsidwa ntchito pazigawo zomwe zimagwiritsidwa ntchito pamapampu, kapena mwachitsanzo mavavu opangira mafuta, pomwe zida zachitsulo zachikhalidwe zimatha kuwonetsa kuchuluka kwa mavalidwe, zomwe zimapangitsa kulephera mwachangu.

Pulogalamuyi ili ndi mphamvu zapadera zamagetsi monga semiconductor, zomwe zimapangitsa kuti zikhale zabwino popanga ma diode othamanga kwambiri komanso othamanga kwambiri, ma MOSFET, ndi ma thyristors pakusintha kwamphamvu kwambiri.

Zinthuzo zimakhala ndi coefficient yotsika yakukula kwamafuta, kuuma, kukhazikika komanso kusinthasintha kwamafuta, kupangitsa kuti ikhale chida choyenera chagalasi chowonera zakuthambo zakuthambo. Ulusi wa silicon carbide, wotchedwa filaments, amagwiritsidwa ntchito poyeza kutentha kwa mpweya pogwiritsa ntchito njira ya kuwala yotchedwa filament pyrometry.

Amagwiritsidwanso ntchito potenthetsa zinthu zomwe zimayenera kusinthidwa kuti zikhale zotentha kwambiri. Amagwiritsidwanso ntchito mu mphamvu za nyukiliya kuti apereke chithandizo chothandizira pazitsulo zozizira kwambiri za gasi.