Alumina ufa: ufa wamatsenga kuti upangitse magwiridwe antchito
Pamsonkhano wa fakitale, Lao Li anali ndi nkhawa ndi gulu lazinthu patsogolo pake: atawombera gululi.magawo a ceramic, nthaŵi zonse pankakhala ming’alu yaing’ono pamwamba, ndipo mosasamala kanthu za mmene kutentha kwa ng’anjo kunasinthira, sikunkakhudza kwenikweni. Lao Wang adabwera, adayiyang'ana kwakanthawi, ndikunyamula thumba la ufa woyera: "Yesani kuwonjezera izi, Lao Li, mwina zikhala bwino." Lao Wang ndi katswiri pafakitale. Salankhula zambiri, koma amakonda kuganizira za zida zatsopano zosiyanasiyana. Lao Li anatenga thumba ndi theka la mtima, ndipo adawona kuti chizindikirocho chinati "alumina powder".
Alumina powder? Dzinali limamveka ngati wamba, ngati ufa wamba woyera mu labotale. Zingakhale bwanji "ufa wamatsenga" womwe ungathe kuthetsa mavuto ovuta? Koma Lao Wang anailoza molimba mtima ndipo anati: “Musaipeputse, chifukwa ndi luso lake, ikhoza kuthetsa mavuto ambiri a mutu wanu.”
Chifukwa chiyani Lao Wang amasilira ufa woyera wosawoneka bwino kwambiri? Chifukwa chake ndi chophweka-pamene sitingathe kusintha dziko lonse lapansi, tikhoza kuyesa kuwonjezera "matsenga ufa" kuti tisinthe ntchito zazikulu. Mwachitsanzo, pamene zoumba zachikhalidwe sizili zolimba mokwanira ndipo zimakhala zosavuta kusweka; zitsulo sizimalimbana ndi kutentha kwambiri kwa okosijeni; ndipo mapulasitiki ali ndi matenthedwe otsika kwambiri, ufa wa alumina umawoneka mwakachetechete ndipo umakhala "mwala woyesera" kuthetsa mavuto ofunikawa.
Lao Wang nthawi ina anakumana ndi mavuto ofanana. Chaka chimenecho, iye anali ndi udindo wa chigawo chapadera cha ceramic chomwe chinkafuna kuti chikhale cholimba, cholimba, komanso chosagwirizana ndi kutentha kwakukulu.Zipangizo zamakono za ceramicamathamangitsidwa, ndipo mphamvu yake ndi yokwanira, koma idzasweka pang'onopang'ono pa kukhudza, ngati chidutswa cha galasi losalimba. Anatsogolera gulu lake kupirira masiku osawerengeka usana ndi usiku mu labotale, mobwerezabwereza kusintha chilinganizo ndi kuwombera ng'anjo pambuyo ng'anjo, koma zotsatira zake zinali kuti mphamvu sanali muyezo kapena brittleness anali okwera kwambiri, nthawi zonse akulimbana m'mphepete mwa fragility.
"Masiku amenewo anali owopsa kwambiri muubongo, ndipo tsitsi langa latha." Lao Wang pambuyo pake adakumbukira. Pamapeto pake, adayesa kuwonjezera gawo linalake la ufa wonyezimira kwambiri wa alumina womwe udasinthidwa ndendende mu zida za ceramic. Mng'anjoyo itatsegulidwanso, chozizwitsa chinachitika: zida za ceramic zomwe zidangowotchedwa zidapanga phokoso lakuya komanso losangalatsa pogogoda. Poyesera kuti aswe ndi mphamvu, izo analimbana ndi mphamvu molimba mtima ndipo sanalinso anathyoka mosavuta - ndi aluminiyamu particles anali wogawanika omwazika masanjidwewo, monga ngati wosaoneka olimba maukonde anali nsalu mkati, amene osati kwambiri bwino kuuma, komanso mwakachetechete anayamwa mphamvu mphamvu, kwambiri kuwongolera brittleness.
Chifukwa chiyani?alumina ufakukhala ndi “matsenga” oterowo? Lao Wang mosasamala anajambula kachidutswa kakang'ono papepala: "Tawonani, kachidutswa kakang'ono ka alumina kameneka kamakhala kolimba kwambiri, kofanana ndi safiro wachilengedwe, komanso kukana kuvala kwapamwamba." Anapuma pang’ono, nati: “Chofunika kwambiri n’chakuti, imalimbana ndi kutentha kwambiri, ndipo mphamvu zake za mankhwala n’zokhazikika mofanana ndi phiri la Tai.
Makhalidwe ooneka ngati odziyimira pawokhawa akalowetsedwa molondola muzinthu zina, zimakhala ngati kusandutsa miyala kukhala golide. Mwachitsanzo, kuwonjezera pa zoumba kungapangitse mphamvu ndi kulimba kwa zoumba; kuzidziwitsa zazitsulo zopangidwa ndi zitsulo zimatha kupititsa patsogolo kukana kwawo kuvala ndikutha kupirira kutentha kwakukulu; ngakhale kuwonjezera ku dziko la pulasitiki kumapangitsa kuti mapulasitiki azitha kutentha kwambiri.
M'makampani opanga zamagetsi,alumina ufaamachitanso "matsenga". Masiku ano, ndi foni iti yam'manja kapena laputopu yomwe siida nkhawa ndi kutentha kwamkati panthawi yogwira ntchito? Ngati kutentha komwe kumapangidwa ndi zida zamagetsi zolondola sikungathe kutayidwa mwachangu, ntchitoyo imakhala yochedwa kwambiri, ndipo chip chidzawonongeka kwambiri. Mainjiniya mochenjera amadzaza mafuta apamwamba a alumina ufa mu silicone yapadera yotenthetsera kapena mapulasitiki aumisiri. Zidazi zomwe zili ndi ufa wa alumina zimamangiriridwa mosamala ku zigawo zapakati pa kutentha kwa kutentha, monga "msewu wotentha wa kutentha", womwe umatsogolera mofulumira komanso mogwira mtima kutentha kwa chip ku chipolopolo cha kutentha kwa kutentha. Deta yoyeserera ikuwonetsa kuti pamikhalidwe yomweyi, kutentha kwapakati kwazinthu zogwiritsa ntchito zida zotenthetsera zomwe zili ndi alumina ufa zitha kuchepetsedwa kwambiri ndi madigiri opitilira khumi kapena makumi angapo poyerekeza ndi zida wamba, kuwonetsetsa kuti zida zimatha kuyendabe modekha komanso mokhazikika pansi pakuchita bwino kwambiri.
Lao Wang nthawi zambiri ankanena kuti: “Matsenga enieni sakhala mu ufa wokha, koma mmene timamvetsetsera vutolo ndikupeza mfundo yofunika kwambiri imene ingathandize kuti ntchitoyi itheke.” Kukhoza kwa alumina ufa sikunapangidwe popanda kanthu, koma kumachokera kuzinthu zake zabwino kwambiri, ndipo moyenerera kumangiriridwa ndi zipangizo zina, kotero kuti amatha mwakachetechete kulimbikitsa mphamvu zake panthawi yovuta ndikusintha kuwonongeka kukhala matsenga.
Chapakati pausiku, Lao Wang anali akuphunzirabe zinthu zatsopano muofesi, ndipo kuwala kumasonyeza mawonekedwe ake. Kunja kwa zenera kunali chete chete, komaalumina ufa m’dzanja lake munali kuwala konyezimira koyera pansi pa kuwalako, ngati nyenyezi ting’onoting’ono zosawerengeka. Ufa wooneka ngati wamba uwu wapatsidwa mautumiki osiyanasiyana m'mausiku osawerengeka ofanana, akuphatikiza mwakachetechete ku zipangizo zosiyanasiyana, kuthandizira pansi zolimba komanso zosavala, kuonetsetsa kuti zipangizo zamagetsi zimagwiritsidwa ntchito kwanthawi yayitali komanso mwabata, ndikuteteza kudalirika kwa zigawo zapadera m'malo ovuta kwambiri. Kufunika kwa sayansi yazinthu kumatengera momwe mungagwiritsire ntchito kuthekera kwa zinthu wamba ndikuzipanga kukhala gawo lofunikira pakudumphadumpha m'mabotolo ndikuwongolera bwino.
Nthawi ina mukadzakumana ndi vuto pakugwiritsa ntchito zinthu zakuthupi, dzifunseni kuti: Kodi muli ndi chidutswa cha "aluminium ufa" chomwe chikuyembekezera mwakachetechete kudzutsidwa kuti mupange mphindi yofunika kwambiri yamatsenga? Taganizirani izi, kodi izi ndi zoona?