Kwinqanaba lomntu wamandulo, abantu abakafuyi izilwanyana njengokutya kwabo, ngoko ke imithombo yokutya yabantu idla ngokuba yimisebenzi yokuzingela kunye nokukha iziqhamo zezityalo. Kodwa ngenxa yokuba ukuzingela kuyingozi kakhulu, abantu baye benza izixhobo ezininzi zokuphucula izinga labo lokuphumelela ekuzingeleni. Iimela zethambo yenye yazo.
Iimela zethambo ziimela ezenziwe ngamathambo esilwanyana.
Kule mihla, akukho mfuneko yokuba abantu baye kuzingela ezintabeni mihla le ukuze bafumane ukutya okuzalisa izisu zabo, kodwa iimela zamathambo ziye zazuzwa ngolunye uhlobo, oko kukuthi, iimela. Iimela zanamhlanje aziphelelanga nje ekusikeni imifuno neziqhamo, zininzi iindidi zeemela, makhe sijonge ezinye zeemela eziphambili.
iimela zentsimbi
Izinto eziluhlaza zolu hlobo lweemela ziyintsimbi, kwaye iintsimbi zanamhlanje ngokuqhelekileyo zenziwe ngensimbi engenasici. Ubushushu bayo obukwaziyo ukumelana nobushushu buphakathi kwamakhulu amabini amadigri ngokukaCelsius kunye namakhulu amathathu ngokukaCelsius.Iimela ezisetyenziselwa ukusika imifuno neziqhamo kwiintsapho zethu zidla ngokuba ziimela zentsimbi. Kwinkqubo yokuvelisa, i-emulsions isetyenziselwa ukupholisa izixhobo zetsimbi.
Iimela zentsimbi ezikhawulezayo
Nangona igama elithi "isantya esiphezulu" longezwa nje, lihluke ngokupheleleyo kwiimela zentsimbi. Iimela zentsimbi ezinesantya esiphezulu zizitshetshe ezenziwe ngentsimbi yodidi oluphezulu. Ukumelana nobushushu bayo ukuya kumaxesha amabini ukuya kwamathathu eemela zentsimbi zemveli.
Iimela zensimbi ezikhawulezayo zisetyenziswa ngokubanzi kwindawo yoshishino.Iimela zentsimbi ezinesantya esiphezulu zinokubonwa rhoqo kumacandelo oshishino anemilo eyahlukeneyo yejometri kunye neenkqubo ezifuna ukusika okuphezulu okuqhubekayo.
Isixhobo sokusika iCarbide
Le mela kunokuthiwa yimela yokusika iimela. Ubushushu bayo obukwaziyo ukumelana nobushushu bunokufikelela kwi-1,000 degrees celsius, ukuqina kunye nokuqina kwayo kungaphezulu kwebanga elinye kuneemela zentsimbi ezinesantya esiphezulu, kwaye ayigugi kakhulu kuneemela zentsimbi ezinesantya esiphezulu.
Izinto zayo eziluhlaza zi-tungsten carbide (WC), i-titanium carbide (TiC), i-tantalum carbide (TaC) kunye ne-5-10% ye-cobalt.
imela ceramic
Ukumelana nokushisa kunye nokuqina kwesi sixhobo, oko kukuthi, ukunyanzeliswa kokugqoka, linyathelo eliphakamileyo kunelo zixhobo ze-carbide ze-cemented. Amacandelo aphambili yi-alumina kunye ne-carbide kwaye ezinye iintsimbi zigxothwa kwindawo yobushushu obuphezulu.
Ekubeni inokumelana nokushisa okuphezulu kunye nokumelana nokugqoka, ukusika okomileyo kusetyenziswa ikakhulu kwi-industrial cutting.
isixhobo sedayimani
Njengoko igama libonisa, olu hlobo lwesixhobo lusetyenziselwa ukusika, ukuba isixhobo esifakwe ngedayimani sisetyenziselwa ukucubungula i-fiber yeglasi ephezulu kunye ne-carbon fiber, ubomi benkonzo buphindwe kamashumi asixhenxe kwisixhobo se-alloy esemgangathweni. Ukungalungi kwezixhobo zedayimani kukuba i-diamond yokugqoka ilula ngokulula ukuwa, kwaye ayikwazi ukuqikelelwa ngokufanelekileyo.
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