Imishini Yokusakaza Eqhubekayo
Umgomo wokusebenza wohlobo olujwayelekile lwemishini yokuphonsa eqhubekayo usekelwe emibonweni efanayo nemishini yethu yokukhipha ingcindezi ye-vacuum. Esikhundleni sokugcwalisa izinto eziwuketshezi eflaskini ungakhiqiza/udwebe ishidi, ucingo, induku, noma ishubhu ngokusebenzisa isikhunta segraphite. Konke lokhu kwenzeka ngaphandle kwamabhamuza omoya noma i-porosity enciphayo. Imishini yokukhipha ivacuum kanye ne-vacuum ephezulu eqhubekayo isetshenziswa ngokuyisisekelo ukwenza izintambo zekhwalithi ephezulu njenge-bonding wire, i-semiconductor, inkambu ye-aerospace.
Kuyini ukulingisa okuqhubekayo, kwenziwani, yiziphi izinzuzo?
Inqubo yokuphonsa eqhubekayo iyindlela ephumelela kakhulu yokukhiqiza imikhiqizo ecishe iqedwe njengezigxobo, amaphrofayili, ama-slabs, imicu namashubhu enziwe ngegolide, isiliva nezinsimbi ezingenayo insimbi njengethusi, i-aluminium nama-alloys.
Ngisho noma kunezindlela ezihlukene zokuphonsa eziqhubekayo, awukho umehluko obalulekile ekubunjweni kwegolide, isiliva, ithusi noma ama-alloys. Umehluko obalulekile amazinga okushisa okuphonsa asukela cishe ku-1000 °C endabeni yesiliva noma yethusi ukuya ku-1100 °C uma kuyigolide noma amanye ama-alloys. Insimbi encibilikisiwe ilokhu iphonswa esitsheni sokugcina esibizwa ngokuthi i-ladle futhi igeleza isuka lapho iye endaweni yokubunjwa eqondile noma evundlile enomkhawulo ovulekile. Ngenkathi igeleza phakathi kwesikhunta, esipholiswe nge-crystallizer, isisindo soketshezi sithatha iphrofayili yesikhunta, siqala ukuqina phezulu futhi sishiye isikhunta ku-semi-solid strand. Ngesikhathi esifanayo, ukuncibilika okusha kuhlale kunikezwa esikhunjini ngesilinganiso esifanayo ukuze kuhambisane nentambo eqinisayo eshiya isikhunta. Umucu uphinde upholiswe ngohlelo lokufafaza ngamanzi. Ngokusetshenziswa kokupholisa okuqinisiwe kungenzeka ukwandisa ijubane lokucwebezela futhi kukhiqizwe emugqeni ukwakheka okulinganayo, okusanhlamvu okuhle okunikeza umkhiqizo osuphelile osuphelile izakhiwo ezinhle zobuchwepheshe. Umucu oqinisiwe ube usuqondiswa futhi usikwe ubude obufunayo ngamashekeli noma ithoshi lokusika.
Izigaba zingasetshenzwa ngokuqhubekayo emisebenzini yokugoqa e-in-line elandelayo ukuze kutholwe amabha, izinduku, amabhilidi e-extrusion (izikhala), ama-slabs noma eminye imikhiqizo eqedwe kancane ngobukhulu obuhlukahlukene.
Umlando wokulingisa okuqhubekayo
Imizamo yokuqala yokuphonsa izinsimbi ngenqubo eqhubekayo yenziwa phakathi nekhulu le-19. Ngonyaka we-1857, uSir Henry Bessemer (1813-1898) wathola ilungelo lobunikazi lokuphonsa insimbi phakathi kwama-roller amabili ajikelezayo okwenza ama-slabs ensimbi. Kodwa ngaleso sikhathi le ndlela yahlala inganakwa. Inqubekelaphambili ewujuqu yenziwa kusukela ngo-1930 kuqhubeke kusetshenziswa indlela kaJunghans-Rossi yokusakazwa okuqhubekayo kwezinsimbi ezilula nezisindayo. Mayelana nensimbi, inqubo yokubunjwa eqhubekayo yasungulwa ngo-1950, ngaphambi (nangemva kwalokho) insimbi yathelwa esikhunjeni esinganyakazi ukwenza 'ingots'.
Ukuphonswa okuqhubekayo kwenduku engeyona insimbi kudalwe yinqubo yeProperzi, eyakhiwe ngu-Ilario Properzi (1897-1976), umsunguli wenkampani i-Continuus-Properzi.
Izinzuzo zokulingisa okuqhubekayo
Ukusakaza okuqhubekayo kuyindlela efanelekile yokukhiqiza imikhiqizo engaqediwe yosayizi abade futhi ivumela ukukhiqizwa kwenani elikhulu ngesikhathi esifushane. I-microstructure yemikhiqizo ilinganayo. Uma kuqhathaniswa nokubunjwa kokubunjwa, ukusakaza okuqhubekayo kungokomnotho kakhulu mayelana nokusetshenziswa kwamandla futhi kunciphisa izinsalela ezincane. Ngaphezu kwalokho, izakhiwo zemikhiqizo zingashintshwa kalula ngokushintsha imingcele yokusakaza. Njengoba yonke imisebenzi ingenziwa ngokuzenzakalelayo futhi ilawulwe, ukusakaza okuqhubekayo kunikeza amathuba amaningi okuvumelanisa ukukhiqizwa ngokuguquguqukayo nangokushesha nezimfuneko ezishintshayo zemakethe nokuhlanganisa nobuchwepheshe bedijithali (Industrie 4.0).