Izindaba

Impuphu yobuchwepheshe bokuphrinta bensimbi ye-3DIsifinyezo senqubo yokubumba, ulwazi olushisayo, njengengxenye ebaluleke kakhulu yezingxenye zensimbi uchungechunge lwemboni yokuphrinta ye-3D, nalo luyinani elikhulu kakhulu. Engqungqutheleni yemboni yokuphrinta ye-3D Yomhlaba ka-2013, ochwepheshe abaphambili embonini yokuphrinta ye-3D Yomhlaba banikeze incazelo ecacile yempuphu yensimbi ephrintiwe ye-3D, okungukuthi, ubukhulu obungaphansi kwe-1mm yezinhlayiya zensimbi. Ifaka i-powder yensimbi eyodwa, i-alloy powder kanye ne-powder ethile ehlanganisiwe ephikisayo enempahla yensimbi. Njengamanje, izinto zempuphu yensimbi yokuphrinta ye-3D zifaka i-cobalt-chromium alloy, insimbi engagqwali, insimbi yezimboni, i-bronze alloy, i-titanium alloy kanye ne-nickel-aluminium alloy. Kodwa i-powder yensimbi ephrintiwe ye-3D akumele nje ibe ne-plasticity enhle, kodwa futhi ihlangabezane nezidingo zosayizi wezinhlayiya ezincane, ukusatshalaliswa kosayizi wezinhlayiya ezincane, i-sphericity ephezulu, ukugeleza okuhle kanye nobuningi obukhulu obukhululekile. Ngenxa yezidingo ezahlukene zokusetshenziswa kanye nenqubo yokubumba elandelayo, izindlela zokulungiselela i-powder yensimbi nazo zihlukile. Ngokwenqubo yokulungiselela, ifaka kakhulu indlela ye-physical chemistry kanye nendlela yemishini. Embonini ye-Powder metallurgy, izindlela ezifana ne-electrolysis, ukunciphisa kanye ne-atomization zisetshenziswa kabanzi. Kodwa-ke, kufanele kuqashelwe ukuthi zombili lezi zindlela zinemikhawulo yazo, azifanele ukulungiswa kwempuphu ye-alloy. Njengamanje, i-powder yensimbi yokukhiqiza okungeziwe igxile kakhulu ku-titanium alloy, i-alloy yokushisa okuphezulu, i-cobalt-chromium alloy, insimbi enamandla aphezulu kanye nensimbi edayiwe. Ukuze kuhlangatshezwane nezidingo zemishini yokukhiqiza okungeziwe kanye nenqubo, i-powder yensimbi kumele ibe nezici zokuqukethwe okuphansi kwe-oxygen ne-nitrogen, izinga elihle eliyindilinga, ububanzi bokusatshalaliswa kosayizi wezinhlayiya ezincane kanye nobuningi obukhulu obukhululekile. Njengamanje, izindlela eziyinhloko zokulungiselela ama-powder ensimbi okukhiqiza okungeziwe yi-plasma rotating electrode (PREP), i-plasma atomization (PA), i-gas atomization (GA) kanye ne-plasma spheroidization (PS), zonke zingasetshenziswa ukulungiselela i-spherical noma i-near-spherical metal powder.