Mtengo wa Green Silicon Carbide Micropowder mu Precision Instrument Manufacturing
Poyenda m'malo ochitira zinthu zolondola, komwe munthu angamve kugunda kwa mtima wake, mpweya umadzaza ndi fungo lochepa la choziziritsira. Old Master Li, akusuzumira, akuyang'ana chipika choyezera cha tungsten carbide chomwe changophwanyidwa kumene chokhala ndi galasi lokulitsa, akung'ung'udza kuti, "Masiku ano, ntchito iyi ikupitirira kukhala yovuta kwambiri. Cholakwika chimodzi, ngakhale katsitsi kamodzi, chingaswe chida chonse!" Zoonadi, mtima wa zida zolondola—magalasi owoneka bwino, mabearing a ceramic, ndi ma carbide probes—ndi vuto lalikulu: zofunikira zosalala, zofooka, komanso zazikulu zikufikira pamlingo wa nanometer. Pakadali pano, micropowder wobiriwira wowala ukuchita gawo la "ngwazi kumbuyo kwa zochitika"—green silicon carbide micropowder, "scalpel yofunikira kwambiri" popanga zinthu zolondola.
Silikoni carbide yobiriwira (SiC) si mchenga wokha. Chuma chake chopangidwa kuchokera ku zinthu zopangira monga mchenga wa quartz ndi petroleum coke mu uvuni woteteza, chili ndi kapangidwe kolimba mwachilengedwe (kuuma kwa Mohs kwa 9.5, kwachiwiri kwa diamondi ndi cubic boron nitride). Chodabwitsa kwambiri ndi m'mphepete mwake ngati mpeni ndi mankhwala okhazikika kwambiri, zomwe zimamulola kupirira kutentha kwambiri ndikupewa kusokonezedwa kulikonse ndi zinthu zomwe zikukonzedwa. Pambuyo pophwanya ndi kugawa mosamala, ufa wobiriwira wonyezimirawu, wocheperako ngati ma micron ochepa kapena magawo a micron, amafanana ndi "kampani ya masamba ang'onoang'ono akuthwa" omwe adapangidwa makamaka kuti agwire zinthu zolimba kwambiri komanso zofooka kwambiri komanso molondola kwambiri.
Kuthana ndi zovuta: "Mdani" wa carbide ndi zoumbaumba
Zipangizo zodulira ma carbide, mipando yopangira ma ceramic, ndi mphete zotsekera ma silicon carbide zimapezeka kwambiri mu zida zolondola. Zipangizozi ndi zolimba kwambiri kotero kuti zomangira wamba zimavutika kuzilowa, zomwe zimapangitsa kuti zisamagwire bwino ntchito komanso zisamasweke mosavuta. Kubwera kwa ufa wobiriwira wa silicon carbide nthawi yomweyo kumasintha mawonekedwe ake. "Ndinkakonda kupukusa nsonga za probe za carbide mosamala kwambiri, monga nsalu, ndipo m'mbali nthawi zambiri zimadulidwa," adatero Xiao Wang, yemwe amagwiritsa ntchito chopukusira cholondola pamwamba. "Kuyambira nditagwiritsa ntchito madzi opukusa opangidwa ndi ufa wobiriwira wa silicon carbide, ndakhala wodzidalira kwambiri! Kuchuluka kwa chakudya kumakhala kofulumira, mphamvu yopukusa imamveka 'yolimba,' ndipo chofunika kwambiri, umphumphu wa m'mphepete ndi wabwino kwambiri, ndi kudula kochepa kwambiri." Chinsinsi cha izi chili mu kuuma kwambiri komanso m'mbali zakuthwa za ufa wobiriwira wa silicon carbide, womwe "umadula" bwino zinthu m'malo mouphwanya ndi mphamvu yankhanza. Izi zimachepetsa kwambiri kuwonongeka kwa zinthu zosalimba ndikuwonjezera kwambiri magwiridwe antchito.
Kusema "Mtima wa Galasi": Akatswiri Opaka Zida Zowunikira ndi Zopangira Ma Semiconductor
Maso a zida zolondola—ma lens ndi ma prism a kuwala, komanso ma wafer a semiconductor ndi ma chips a MEMS sensor—amafuna malo osalala ngati khungu la mwana (Ra nthawi zambiri amafika pamlingo wa nanometer), popanda malo oti akhwime kapena kuwonongeka pansi pa nthaka. Ufa wobiriwira wa silicon carbide umasintha kukhala master wofewa wopukuta. Pa nthawi yolumikizana ndi kupukuta, ufa wobiriwira wa silicon carbide wokhala ndi tinthu tating'onoting'ono (W-grade kapena ngakhale wofewa) umagwiritsidwa ntchito ndikuyimitsidwa mumadzimadzi opukuta opangidwa mwapadera. "Pa ma oscillator a quartz crystal kapena malo owunikira olondola, kuimika kwa ufa wobiriwira wa silicon carbide kumagwira ntchito bwino kuposa zipangizo zina zodula kwambiri," anatero katswiri waluso wazaka makumi awiri waluso mu workshop yowunikira. "Imapereka mphamvu yopukutira yokhazikika, ndipo tinthu tating'onoting'ono tomwe timagwirizana sitingathe kusonkhana ndikukanda pamwamba. Malo opukutidwa sali owala, ndipo gawo lowonongeka pansi pa nthaka ndi losaya, lomwe ndi lofunikira kwambiri kuti zinthu zowunikira zizitha kufalikira komanso kukhazikika kwa nthawi yayitali kwa zinthu zowunikira!" Kusagwira ntchito kwa mankhwala a silicon carbide wobiriwira kumathandizanso kuti njira yopukutira isabweretse zinyalala ndi kuipitsidwa, zomwe zimatsimikizira kuti gawo lomaliza ndi loyera.
Kupanga Moyenera: "Mpeni Wosema" wa Zigawo Zovuta Kwambiri
Zipangizo zolondola zimadzaza ndi mitundu yonse ya zinthu zazing'ono zopangidwa modabwitsa: zotchingira za ceramic zosaoneka bwino, mipata mu ma microfluidic chips, ndi ma micro-gear opangidwa ndi carbide yolimba. Malo awa ndi opapatiza komanso ovuta, zomwe zimapangitsa kuti zida zachikhalidwe zisafikire. Ufa wa silicon carbide wobiriwira, wophatikizidwa ndi ukadaulo wokonza molondola, umakhala chida champhamvu cha "kusema pang'ono." Mwachitsanzo, kuwonjezera ufa wobiriwira wa silicon carbide wopyapyala kumadzi opukutira kuti upukute molondola kapena kudula waya kungawongolere kwambiri magwiridwe antchito opukutira ndi kulondola kwa zinthu zolimba kwambiri. "Kupanga kabowo kakang'ono kopyapyala mu nozzle ya carbide kumatanthauza kupukutira pang'ono pang'ono ndi phala lopukutira lophatikizidwa ndi ufa wobiriwira wa silicon carbide, wophatikizidwa ndi mutu wopukutira wa singano ngati diamondi," adatero Zhao, yemwe amayang'anira kukonza bwino nkhungu. "Zimapanga makoma owongoka komanso osalala a mabowo, ndi kuwongolera kokhazikika mkati mwa ma micrometer. Kugwiritsa ntchito ufa wina sikubweretsa zotsatira zolondola chonchi." Mu makina opangidwa ndi ultrasonic-helped ultrasonic, green silicon carbide powder ndi othandiza kwambiri pakugwedezeka kwamphamvu, zomwe zimathandiza kuboola bwino, kudula, komanso kukonza bwino zinthu zolimba komanso zosweka.
Kugwiritsa Ntchito Bwino “Mpeni wa Micron” Uyu: Zomwe Zinachitikira ku Workshop
Pamene zida zolondola zikupitirira kukhala zazing'ono, zanzeru, komanso kuchita bwino kwambiri, zofunikira pakupanga zinthu zolondola kwambiri zidzakhala zovuta kwambiri. Ukadaulo wobiriwira wa ufa wa silicon carbide ukukulirakulira nthawi zonse. Ufa wa micropowders wokhala ndi kugawa kwa tinthu tating'onoting'ono, tinthu tating'onoting'ono (nanoscale), ndi mawonekedwe owongolera kwambiri (monga sphericity pang'ono kuti muchepetse kukanda) ndi madera ofufuza komanso otukuka kwambiri. Mainjiniya akuyesetsanso nthawi zonse kuphatikiza bwino ufa wa silicon carbide wobiriwira m'mayunitsi odzipangira okha komanso anzeru (monga malo opukutira a robotic ndi makina opukutira osinthika okhala ndi kuwunika pa intaneti) kuti apange kupanga kolondola kokhazikika komanso kogwira mtima. M'ma workshop olondola amtsogolo, "scalpel ya micrometer" iyi mosakayikira idzakhala yakuthwa komanso yanzeru kwambiri.