Tlhahlobo ea Melao ea Kaho ea Crucible

Li-crucibles ke lijana tsa bohlokoa tse sebelisoang ho-mocheso o phahameng oa ho qhibiliha, ho kopana ha lik'hemik'hale, le ho lokisa thepa. Boleng ba bona ba kaho bo ama ka kotloloho polokeho ea bona le bophelo ba ts'ebeletso. Ka hona, ho theha le ho latela maemo a thata a kaho ho bohlokoa.

Khetho ea thepa le kalafo esale pele ke tsa bohlokoa bakeng sa kaho ea crucible. Thepa ea crucible e lokela ho khethoa ho latela maemo a itseng a sebetsang. Ka mohlala, li-crucible tsa graphite li loketse ho qhibilihisa-ferrous metal smelting, ha -alumina e hloekileng kapa silicon carbide crucibles e sebelisoa maemong a mocheso a holimo kapa libakeng tse senyang. Teko ea 'mele le ea lik'hemik'hale ea thepa pele e tlisoa e ea hlokahala ho netefatsa hore bohloeki ba tsona, letsoalo le katoloso ea mocheso li kopana le litlhoko tsa moralo. Pele ho hahoa, holim'a thepa e lokela ho ba e hloekileng le e se nang oli le litšila, 'me e omisitsoe ha ho hlokahala ho thibela li-bubble le mapetsong.

Taolo ea ts'ebetso ea kaho e bohlokoa. Bakeng sa li-crucibles tse kopantsoeng, ho nepahala ha hlobo ho tlameha ho laoloa ka hare ho ± 0.5mm. Lipululoana tsa moea li lokela ho thibeloa ho kena nakong ea ts'ebetso ea ho akhela, 'me tafole e sisinyehang e lokela ho sebelisoa ho thusa ho tiisa. Li-crucibles tsa masonry (tse kang tse hahiloeng ka litene tse refractory) li hloka slurry e entsoeng ka thata, e nang le manonyeletso a litene a se nang bophara ho feta 2mm, le mekhahlelo e tsitsitseng ho netefatsa botsitso ka kakaretso. Bakeng sa litšepe tsa tšepe tse cheselitsoeng, etsa bonnete ba hore litšepe ha li na li-pores le li-slag inclusions, 'me mocheso-sebaka se amehileng sea tlosoa ho felisa khatello ea kelello.

Tlhahlobo ea boleng le kamohelo ke tsa bohlokoa. Ka mor'a hore kaho e phethoe, tlhahlobo ea pono (bakeng sa mapetsong le ho senyeha), ho netefatsa li-dimensional (mamello ± 1%), le tlhahlobo ea ts'ebetso (e kang ho hanyetsa khatello le liteko tse potlakileng tsa ho pholile le ho futhumatsa) ho hlokahala. Bakeng sa-mocheso o phahameng le{4}}litšebeliso tse phahameng tsa khatello, X-ray kapa tlhahlobo ea ultrasonic e boetse e hlokahala ho netefatsa bots'epehi ba sebopeho sa kahare.

Ho khomarela litekanyetso tsa kaho ea saense ha ho ntlafatse feela ho tšepahala ha crucible, empa hape ho lelefatsa bophelo ba eona ba tšebeletso le ho fokotsa likotsi tsa tšireletso nakong ea tlhahiso. Lihlopha tsa kaho li lokela ho khomarela ka thata litekanyetso le litlhaloso tse amehang tsa indasteri tse ipapisitseng le maemo a ikhethileng a ts'ebetso ho netefatsa taolo ea boleng boemong bo bong le bo bong.