Carbide e entsoeng ka samentevacuum sintering ke mokhoa oo ho oona ho etsoang sintering ka khatello e ka tlas'a khatello ea sepakapaka.Ts'ebetso ena e kenyelletsa ho tlosoa ha plasticizer, degassing, solid phase sintering, liquid phase sintering, alloying, densification, le dissolution pula.Ha re shebeng lits'ebetso tse 'ne tse kholo tsa sintering ea carbide vacuum sintering:
①Sethala sa ho tlosa polasetiki
Mokhahlelo oa ho tlosa polasetiki o qala ho tloha mocheso oa kamore 'me o nyolohela ho hoo e ka bang 200 ° C.Khase e adsorbed holim'a likaroloana tsa phofo ka billet e arotsoe ho tloha holim'a likaroloana ka mocheso 'me e baleha ho tloha billet e sa khaotse.Plastiki ka har'a billet e futhumetse ho tsoa ho billet.Ho boloka boemo bo phahameng ba vacuum ho thusa ho lokolloa le ho phonyoha ha likhase.Mefuta e fapaneng ea li-plasticizers e tlas'a liphetoho tsa mocheso ts'ebetsong e fapana, nts'etsopele ea ts'ebetso ea ho tlosa polasetiki e lokela ho khethoa ho latela maemo a itseng a tlhahlobo.Mocheso o akaretsang oa polasetiki oa gasification o ka tlase ho 550 ℃.
② Sethala sa pele-pele
Sethaleng sa pre-sintering se bua ka mocheso o phahameng oa sintering pele ho sintering, e le hore k'hemik'hale ea oksijene e ka har'a likaroloana tsa phofo le karabelo ea phokotso ea k'habone ho hlahisa khase ea carbon monoxide e siea billet ea khatiso, haeba khase ena e ke ke ea qheleloa ka thoko ha karolo ea mokelikeli e hlaha, e tla fetoha masala a koetsoeng a pore ka alloy, le haeba sintering e hatelloa, ho thata ho e felisa.Ka lehlakoreng le leng, boteng ba oxidation bo tla ama ka botebo ho koloba ha karolo ea mokelikeli ho ea karolong e thata mme qetellong e ama ts'ebetso ea densification.carbide e entsoeng ka samente.Pele ho hlaha karolo ea mokelikeli, e lokela ho tlosoa ka ho lekaneng 'me ho sebelisoe vacuum e phahameng ka ho fetisisa.
③ Mocheso o phahameng oa sintering sethaleng
Mocheso oa sintering le nako ea sintering ke mekhoa ea bohlokoa ea ts'ebetso bakeng sa densification ea billet, ho thehoa ha sebopeho se nang le homogeneous le ho fumana thepa e hlokahalang.Mocheso oa sintering le nako ea sintering e itšetlehile ka motsoako oa motsoako, boholo ba phofo, matla a ho sila a motsoako le lintlha tse ling, hape li laoloa ke moralo oa kakaretso oa thepa.
④Mokhahlelo oa ho pholisa
Sekhahla sa ho pholile ke moo sekhahla sa ho pholile se amang sebopeho le sebopeho sa karolo e kopantsoeng ea alloy le ho hlahisa khatello ea kelello ka hare.Sekhahla sa ho pholisa se lokela ho ba boemong bo laoloang.Sintering hot isostatic pressing ke mokhoa o mocha oa sintering, o tsejoang hape e le low-pressure sintering, eo sehlahisoa se hatelloang ka khatello e itseng ea khase ho khothalletsa densification tlas'a boemo ba hore degassing e phethoa, li-pores tse holim'a billet e hatelitsoeng. li koetsoe, 'me karolo e kopanyang e sala e le metsi.
Nako ea poso: Jun-20-2023
