Oomatshini abaQhuba ngokuQhutywayo
Umgaqo womsebenzi wohlobo oluqhelekileyo oluqhubekayo lwemishini yokuphosa isekelwe kwiingcamango ezifanayo njengoomatshini bethu bokuphosa uxinzelelo lwe-vacuum. Esikhundleni sokuzalisa izinto ezimanzi kwi-flask unokuvelisa / ukudweba iphepha, ucingo, intonga, okanye ityhubhu ngokusebenzisa i-graphite mold. Konke oku kwenzeka ngaphandle kwamaqamza omoya okanye i-porosity ehlayo. I-vacuum kunye ne-vacuum ephezulu eqhubekayo yomatshini yokuphosa isetyenziselwa ukwenza iingcingo ezikumgangatho ophezulu ezifana ne-bonding wire, i-semiconductor, intsimi ye-aerospace.
Yintoni ukuphosa okuqhubekayo, kwenziwa ntoni, yintoni inzuzo?
Inkqubo eqhubekayo yokuphosa yindlela esebenzayo kakhulu yokuvelisa iimveliso ezigqityiweyo njengemivalo, iiprofayili, ii-slabs, imicu kunye neetyhubhu ezenziwe ngegolide, isilivere kunye neentsimbi ezingenayo i-ferrous ezifana nobhedu, i-aluminium kunye ne-alloys.
Nokuba kukho iindlela ezahlukeneyo zokuphosa eziqhubekayo, akukho mahluko ubalulekileyo ekujuleni igolide, isilivere, ubhedu okanye ialloys. Umahluko obalulekileyo ngamaqondo obushushu okuphosa aqala malunga ne-1000 °C kwimeko yesilivere okanye ubhedu ukuya kwi-1100 °C kwimeko yegolide okanye ezinye ialloys. Isinyithi esinyibilikisiweyo sihlala siphoswa kwisitya sokugcina esibizwa ngokuba yi-ladle kwaye ihamba ukusuka apho ukuya kubumba lokuphosa oluthe nkqo okanye oluthe tye olunesiphelo esivulekileyo. Ngelixa ihamba ngokubumba, epholileyo nge-crystallizer, ubunzima bolwelo buthatha iprofayili yesikhunta, buqala ukuqina kumphezulu walo kwaye bushiye ukubumba kwi-semi-solid strand. Ngaxeshanye, inyibilika entsha ihlala inikezelwa kwi-mold kwizinga elifanayo ukugcina kunye ne-strand eqinisayo eshiya ukubumba. Umcu uphinda upholiswe ngenkqubo yokutshiza ngamanzi. Ngokusetyenziswa kokupholisa okuqinisiweyo kunokwenzeka ukunyusa isantya sekristallisation kunye nokuvelisa kwi-strand i-homogeneous, i-fine-grained structure enika i-semi-finished product properties zobuchwepheshe. Umsonto oqinisiweyo uya kuthi ngqo kwaye usikwe ubude obufunwayo ngeeshears okanye itotshi yokusika.
Amacandelo anokusetyenzwa ngakumbi kwimisebenzi elandelayo yokuqengqeleka kumgca wokufumana imivalo, iintonga, iibhilidi ze-extrusion (ezingenanto), ii-slabs okanye ezinye iimveliso ezigqityiweyo kwimilinganiselo eyahlukeneyo.
Imbali yosasazo oluqhubekayo
Iinzame zokuqala zokuphosa isinyithi kwinkqubo eqhubekayo zenziwa phakathi kwenkulungwane ye-19. Ngomnyaka we-1857, uSir Henry Bessemer (1813-1898) wafumana ilungelo elilodwa lomenzi wokuphosa isinyithi phakathi kweerola ezimbini ezijikelezayo zokwenza amacwecwe esinyithi. Kodwa ngelo xesha le ndlela yahlala ingahoywanga. Inkqubela phambili eqinisekileyo yenziwa ukusukela ngo-1930 ukuya phambili ngobuchule beJunghans-Rossi bokuqhubeka bephosa ukukhanya kunye neentsimbi ezinzima. Ngokuphathelele intsimbi, inkqubo eqhubekayo yokuphosa yaphuhliswa ngo-1950, ngaphambi (nasemva koko) ukuba intsimbi yagalelwa kwisingundo esimileyo ukwenza 'iingots'.
Ukuphoswa ngokuqhubekayo kwentonga ye-non-ferrous yenziwe yinkqubo yeProperzi, ephuhliswe ngu-Ilario Properzi (1897-1976), umsunguli we-Continuus-Properzi inkampani.
Iingenelo zokusasa rhoqo
Ukwenziwa ngokuqhubekayo yeyona ndlela ifanelekileyo yokuvelisa iimveliso ezigqityiweyo zobukhulu obude kwaye zenza ukuba kuveliswe ubungakanani obukhulu ngexesha elifutshane. I-microstructure yeemveliso ilinganayo. Xa kuthelekiswa nokuphosa kwiziko lokubumba, ukuphosa okuqhubekayo kuqoqosho ngakumbi malunga nokusetyenziswa kwamandla kwaye kunciphisa inkunkuma encinci. Ngaphezu koko, iipropati zeemveliso ziyakwazi ukuguqulwa ngokulula ngokutshintsha iiparamitha zokuphosa. Njengoko yonke imisebenzi inokuthi yenziwe ngokuzenzekelayo kwaye ilawulwe, ukuphosa okuqhubekayo kunika amathuba amaninzi okulungelelanisa imveliso ngokuguquguqukayo kwaye ngokukhawuleza kwiimfuno eziguqukayo zemarike kunye nokudibanisa kunye ne-digitization (Industrie 4.0) iteknoloji.