Iimfuno zococeko zeWhite Corundum kwiZixhobo zokuLungisa ukutya
Ngentsimbi yesihlanu kusasa, uMlawuli uLi wevenkile yokukhenkceza wakhamisa njengoko wayevula ucango lwevenkile, ivumba elinamandla lesibulali-ntsholongwane se-ozone limhlasela. Njengesiqhelo, wahamba waya kwi-spiral juicer entsha efakelweyo, iminwe yakhe ixubha ingaphakathi lentsimbi engagqwaliyo, eyayivakala ithambile njengesipili. “Old Wang, le abrasive intsha imnandi kakhulu! Ingcono kakhulu kunebhetshi yokugqibela. Akukho nanye i-burr ekuchukumiseni!” Umqhubi u-Old Wang wancuma. “Enyanisweni, imingxunya eyenziwe yile 'powder yesafire emhlophe' yenza intsalela yeziqhamo ithambile njenge-loach. Zimbalwa kakhulu iikona ezingacocekanga!” Le “powder yesafire emhlophe” engabonakaliyo abayibhekisa kuyo yimathiriyeli ephambili egcina indlela yokucoca izixhobo zokulungisa ukutya: umgangatho wokutya.i-corundum emhlophe.
Kwihlabathi lokucubungula ukutya, "ucoceko" lubaluleke kakhulu. Nokuba kukukrwela okanye ukubola okuncinci kumphezulu wezixhobo kunokuba yindawo yokuzalela iintsholongwane kwaye kugcine nenkunkuma yesinyithi, nto leyo engcolisa imveliso. I-micropowder emhlophe ye-corundum yenqanaba lokutya "sisixhobo esiqinileyo" sokunqoba olu celomngeni. Yenziwe nge-alumina ecocekileyo kakhulu (Al₂O₃ ≥ 99.5%), inyibilikiswe kwisithando sombane, ipholiswe kwaye iqiniswe, ize emva koko ityunyuzwe kwaye ilinganiswe. Iqhayisa ngobunzima be-Mohs ukuya kuthi ga kwi-9. Nangona kunjalo, iimfuno zenqanaba lokutya zidlula nje "ubunzima"; zikwagxininisa "ubunyulu" kunye "nococeko."
Ubunyulu yindlela yokuphila yokhuseleko lokutya. I-corundum emhlophe eqhelekileyo yemizi-mveliso inokugcina ukungcola okuncinci kwesinyithi okufana ne-iron kunye ne-chromium. Kwishishini lokucubungula ukutya, nokuba yinxalenye enye kwisigidi inokuba yintlekele. Ndikhumbula umzi-mveliso wejusi wasekuhlaleni kwiminyaka emithathu eyadlulayo ufumene isiganeko apho amanqanaba aphezulu esinyithi esinzima afunyanwa kwiimveliso zawo. Umthombo yayikukusetyenziswa kwe-abrasives equlethe i-iron ngexesha lokupolisha. La masuntswana esinyithi angene kwi-weld seams kwaye kamva anyibilikiswa yijusi ye-asidi ngokuhamba kwexesha. I-corundum emhlophe ye-Food-grade isusa le mingcipheko evela kumthombo: izinto eziluhlaza ezikhethwe ngononophelo, indawo yokunyibilikisa ayinangcoliseko, kwaye imveliso egqityiweyo ivavanywa yi-ICP-MS (Inductively Coupled Plasma Mass Spectrometry) ukuqinisekisa ukuba umxholo wesinyithi esinzima uhlala ungaphantsi kakhulu kwimida engqongqo ebekwe ngumgangatho wesizwe we-GB 4806.9-2016, "Izinto zeMetal kunye neArticles ezijoliswe ekuNxibelelaneni kokutya." Ngamazwi kaLao Zhang ovela kwiSebe loHlolo loMgangatho, “Le mpuphu icocekile kakhulu, kufana nokuyisebenzisa njengesikena sokhuseleko sezixhobo. Kufuneka 'ucoceke' wena kuqala!”
Ukuma kwamasuntswana kumisela ukusinda kwamabala angabonakaliyo acocekileyo. Ukupolisha izixhobo zokutya akuthethi ukuba “zikhazimle ngakumbi”; isitshixo kukudala umphezulu ongenamhlaba. Khawucinge ngetanki yokuxuba yentsimbi engagqwaliyo. Ipolished nge-abrasives eqhelekileyo enemiphetho ebukhali, ibonakala ikhazimla, kodwa phantsi kwe-microscope, igcwele “imingxunya” emincinci—indawo zendalo zokubalekela iintsholongwane kunye nentsalela. I-corundum micropowder emhlophe ye-corundum efanelekileyo yokutya isebenzisa inkqubo yokubumba ekhethekileyo ukwenza amasuntswana aphantse abe yingqukuva. Njengoko uLao Wang echaza, “Ndandisebenzisa umgubo ongekho semgangathweni, kwaye izixhobo emva kokupolisha zazifana neglasi eqandisiweyo—zithambile xa zichukunyiswa, kodwa zizele yimingxunya emincinci xa zijongwa ngokusondeleyo. Ngoku, ngale mgubo ungqukuva, ifana nesipili sokwenyani! Yihlambe ngejusi, kwaye akukho nto inamathelayo kumphezulu.” Amasuntswana angqukuva ajikeleziswa ngokulinganayo ngexesha lokupolisha, endaweni yokusikwa, kunciphisa imingxunya emincinci kunye nemingxunya, okwenza umphezulu wesixhobo “kulula ukuwucoca kwaye ungabi nantsalela.”
Unyango lomphezulu lwakha ukhuselo lweentsholongwane. Ubushushu obuphezulu kunye nokufuma kweendawo zokuvelisa ukutya kudala indawo yokukhula kweentsholongwane. Nangona umgubo omhlophe we-corundum oqhelekileyo uzinzile ngokwemvelo, unokuba ngumthombo wongcoliseko ukuba ufunxa umswakama okanye ukungcola okuphilayo. Iimveliso zomgangatho wokutya kufuneka zifumane unyango olukhethekileyo lokuvala kunye nokuvalwa kweembobo: i-calcination yobushushu obuphezulu isusa iindawo ezisebenzayo kumphezulu, kwaye amasuntswana emva koko agqunywe ngengubo ye-silane yomgangatho wokutya. Olu "gquma olukhuselayo" aluthinteli kuphela i-abrasive ekufunxeni ungcoliseko lokusingqongileyo, kodwa lukwaqinisekisa ukusasazeka okufanayo nokuzinzileyo kwi-slurry yokupolisha. Injineli kwisityalo sobisi yakha yabelana, "Emva kokutshintshela kwi-treatedumgubo omhlophe we-corundum, izinga lokupasa ukuhlolwa kweentsholongwane emva kokuhlanjwa kwezixhobo linyuke ngama-30%. Kufana nokufaka umaleko 'we-wax' kumphezulu wezixhobo, ukuthintela ukungcola ukuba kungahlali ixesha elide!
Itekhnoloji yokucubungula kunye nenkqubo yococeko engqongqo evaliweyo. Ukusetyenziswa kwe-corundum emhlophe kwizixhobo zokutya kungaphezulu nje kwenkqubo elula yokucola nokucoca. Ukusuka ekucoleni ii-welds kwiitanki zokuxuba ukuya kwiimold zetshokholethi ezigqityiweyo kwisibuko, kufuneka kulandelwe imigangatho yococeko engqongqo "engenaluthuli, engenaoyile, nelandelekayo". Ukucola kufuneka kwenziwe kwindawo ecocekileyo, ekwanti kusetyenziswa i-lubricant yokupholisa ekumgangatho wokutya (ngesiqhelo amanzi acociweyo okanye i-oyile yemifuno ecociweyo) ukuthintela ukungcola kweoyile yeminerali. Emva kokucola, izixhobo zifaka inkqubo yokucoca enamanqanaba amaninzi: ukususa i-alkaline, ukukhupha i-asidi, kwaye ekugqibeleni kuhlanjululwe ngamanzi acocekileyo de kube kufikelele kwinqanaba elichaziweyo. Yonke inkqubo ifana nenkqubo yotyando, kwaye inyathelo ngalinye libhaliwe. Omnye umenzi wokutya okhenkcezisiweyo othumela kwi-EU ude agunyazise inqanaba le-Class 100,000 lokucoca umoya kwindawo yokusebenzela yokucola—le powder imhlophe ye-corundum “idanisa kwigumbi elingcolileyo.”
Ukujonga phambili, iimfuno zococeko nokhuseleko kwishishini lokutya ziya kuba nzima ngakumbi. Ukubeka iliso ngobuchule nangokusebenzisa i-intanethi kuya kuba yinto eqhelekileyo. Umzekelo, i-white corundum polishing slurries ene-integrated sensors inokujonga i-pH, uxinaniso lwamasuntswana, kunye nomxholo wokungcola ngexesha langempela; kwaye i-white corundum eguqulwe ngeengubo ze-antimicrobial inokuphuhliswa ukuze inike iipropati ze-antibacterial kwiindawo zezixhobo ngexesha lokupolisha. Ingcali yezinto eziphathekayo uGqr. Wu wakha wathi, "Ukuvela kwe-white corundum yokutya yimfazwe encinci yokulwa nongcoliseko lweentsholongwane kunye nokufuduka kweekhemikhali. Ingaphezulu nje kokurhawuzelela; ngumqobo wokuqala womzimba kukhuseleko lokutya."
Xa isitya sentsimbi engenasici sikhazimla ngokulinganayo phantsi kokukhanya, xa itshokolethi iphuma kwimoldi yayo inesiphelo esigqibeleleyo sesipili, xa umgca wokuzalisa ijusi uhlanjwa ngoxinzelelo oluphezulu kwaye ungafumani ntsalela yeentsholongwane—ngasemva kwayo yonke into kukho i-corundum micropowder emhlophe yezinga lokutya, igcina isithembiso sayo “sobulukhuni, ubunyulu, kunye nococeko.” Ayinawo umkhanyo oqaqambileyo, kodwa ngamandla ayo angenakugungqiswa kunye nobuntu bayo obucocekileyo, yakha udonga olungabonakaliyo lokuzikhusela kwindawo ebalulekileyo apho oomatshini badibana nokutya, bekhusela ukhuseleko lolwimi lwethu.
Kwihlabathi lokucubungula ukutya, imigangatho yococeko engqongqo idla ngokuqala ngenqanaba elingabonakaliyo nelingabonakaliyo lokuguda.