Sisebenzisa amakhukhi ukuthuthukisa ulwazi lwakho.Ngokuqhubeka upheqa lesi sizindalwazi uyavumelana nokusetshenziswa kwethu kwamakhukhi.Ulwazi olwengeziwe.
Esihlokweni sakamuva esishicilelwe kumagazini i-Additive Manufacturing Letters, abacwaningi baxoxa ngokusetshenziswa kwesipatha sensimbi engenasici esifakwe ngamakhemikhali ukuze kunwetshwe impilo yempushana ekukhiqizeni okungeziwe.
Ucwaningo: Ukwelula Impilo Yempushana Ekwenziweni Okungeziwe: Ukufakwa Kwekhemikhali Kwe-Stainless Steel Spatter.Ikhredithi Yesithombe: MarinaGrigorivna/Shutterstock.com
Izinhlayiya ze-Metal Laser Powder Bed Fusion (LPBF) Splash zikhiqizwa ngamaconsi ancibilikisiwe akhishwa echibini elincibilikisiwe noma izinhlayiya eziyimpushana ezishiselwe eduze noma ngaphezu kwendawo yokuncibilika njengoba edlula ku-laser beam.
Naphezu kokusetshenziswa kwendawo engasebenzi, ukusebenza kabusha okuphezulu kwensimbi eduze nezinga lokushisa elincibilikayo kukhuthaza ukukhishwa kwe-oxidation.Nakuba izinhlayiya ze-spatter zikhishwa ngesikhathi se-LPBF zincibilika okungenani isikhashana phezulu, ukusakazeka kwezakhi eziguquguqukayo phezulu kungenzeka, futhi lezi zakhi ezinokuhlangana okuphezulu komoyampilo zikhiqiza izendlalelo ze-oxide eziwugqinsi.
Njengoba umfutho wengxenye womoya-mpilo ku-LPBF uvame ukuba phezulu kunalowo we-atomization yegesi, amathuba okubopha komoyampilo ayanda.
Insimbi engagqwali kanye ne-nickel-based alloy spatters zaziwa ngokukhipha i-oxidize ngokushesha, zakha iziqhingi ezifika kumamitha ambalwa ukujiya. Ngaphezu kwalokho, izinsimbi ezingagqwali nama-alloys asekelwe ku-nickel, njengalawo akhiqiza ama-spatter ohlobo lwe-oxide esiqhingini, ayizinto ezivame ukwenziwa ngomshini ku-LPBF, futhi ukusebenzisa le ndlela ku-LPBF ejwayelekile kakhulu ukukhombisa ukuthi i-LPBF yamakhemikhali iyindlela evamile yokubonisa ukuthi i-spatter yensimbi ibalulekile.
(a) Isithombe se-SEM sezinhlayiya ze-stainless steel spatter, (b) indlela yokuhlola yokushumeka kwamakhemikhali ashisayo, (c) Ukwelashwa kwe-LPBF kwezinhlayiya ze-spatter ezikhishwe deoxidized.Ikhredithi yesithombe: Murray, J. W, et al, Additive Manufacturing Letters
Kulolu cwaningo, ababhali basebenzise indlela entsha yokuhlanganisa amakhemikhali ukuze basuse ama-oxide ebusweni bezimpushana zensimbi engenasici ene-oxidized. Ukuncibilika kwensimbi nxazonke nangaphansi kweziqhingi ze-oxide ku-powder kusetshenziswa njengendlela eyinhloko yokukhishwa kwe-oxide, okuvumela ukukhishwa kwe-oxide okunolaka.I-splash, i-etch kanye nezimpushana ze-virgin zazihlungiwe usayizi ofanayo we-powderF uhla lwe-LP lokucubungula.
Iqembu likhombise ukuthi lingayikhipha kanjani oxides kusuka ezinhlakeni ezingenasici zensimbi, ikakhulukazi lezo ezahlukaniswe iziqhingi zamakhemikhali ze-single of LPBF zama-puder of LPBF.
Abacwaningi babheke izinga lokushisa kanye nezinsimbi ezimbili ezihlukene zensimbi engagqwali.Ngemva kokuhlolwa ebangeni losayizi ofanayo, amathrekhi angawodwa e-LPBF adalwe kusetshenziswa izimpushana ezimsulwa ezifanayo, ama-splash powders, nezimpushana ezicushwe kahle.
Izimpawu ze-LPBF ngazinye ezikhiqizwe kusuka ku-spatter, i-etch spatter, kanye nempushana ecwebile.Isithombe sokukhulisa okuphezulu sibonisa ukuthi ungqimba lwe-oxide oluvame kakhulu kuthrekhi efafaziwe lukhishwa kuthrekhi efafaziwe egxilile.Impushana yoqobo yabonisa ukuthi amanye ama-oxide ayesekhona.Ikhredithi yesithombe: Murray, J. W, et alnufacturing, Additive
Ukufakwa kwendawo ye-oxide ku-316L yensimbi engagqwali ye-splash powder yehle nge-factory ye-10, kusukela ku-7% kuya ku-0.7% ngemuva kokuba i-reagent ye-Ralph ishise ibe ngu-65 ° C ekugezeni kwamanzi ngehora le-1. Ukwenza imephu yendawo enkulu, idatha ye-EDX ibonise ukunciphisa amazinga e-oxygen kusuka ku-13.5% kuya ku-4.5%.
I-spatter ehlanganisiwe inombala ophansi we-oxide slag endaweni yethrekhi uma kuqhathaniswa ne-spatter.Ngaphezu kwalokho, ukucwiliswa kwamakhemikhali empushana kukhulisa ukufana kwempushana emzileni.Ukufakwa kwamakhemikhali kunamandla okuthuthukisa ukusebenziseka kabusha nokuqina kwe-spatter noma izimpushana ezisetshenziswa ngobuningi ezenziwe ngezimpushana zensimbi ezingenasici ezisetshenziswa kakhulu nezingagqwali.
Kulo lonke uhla losayizi wesisefo esingu-45-63 µm, izinhlayiya ezisele eziyi-agglomerated kuzimpushana zesipatha ezigxilile nezingahlanganisiwe zichaza ukuthi kungani imikhondo yezimpushana ezigxishiwe nezifafaziwe zifana, kuyilapho amavolumu ezimpushana zangempela zinkulu cishe ngo-50%.
I-spatter ehlanganisiwe inombala ophansi we-oxide slag endaweni yethrekhi uma kuqhathaniswa ne-spatter.Lapho ama-oxide ekhishwa ngamakhemikhali, izimpushana eziboshwe kancane nezingenalutho zibonisa ubufakazi bokubopha okungcono kwama-oxides ancishisiwe, okubangelwa ukumanzisa okungcono.
I-Schematic ebonisa izinzuzo zokwelashwa kwe-LPBF lapho kususwa ngamakhemikhali ama-oxides ku-splash powder ezinhlelweni zensimbi engagqwali.Ukumanzisa okuhle kakhulu kufinyelelwa ngokuqeda ama-oxides.Ikhredithi yesithombe: Murray, J. W, et al, Additive Manufacturing Letters
Kafushane, lolu cwaningo lusebenzise inqubo yokuhlanganisa amakhemikhali ukuvuselela ngamakhemikhali izimpushana ze-stainless steel oxidized kakhulu ngokucwiliswa ku-reagent ka-Ralph, isixazululo se-ferric chloride ne-cupric chloride ku-hydrochloric acid. Kwaphawulwa ukuthi ukucwiliswa kusixazululo se-Ralph etchant esishisayo sehora elingu-1 kubangele ukumbozwa kabusha kwe-oxide endaweni eyi-10.
Ababhali bakholelwa ukuthi ukushumeka kwamakhemikhali kunamandla okuba ngcono futhi kusetshenziswe esikalini esibanzi ukuze kuvuselelwe izinhlayiya eziningi ze-spatter eziphinde zasetshenziswa noma izimpushana ze-LPBF, ngaleyo ndlela kwandise inani lezinto ezibizayo ezisekelwe kumpushana.
Murray, JW, Speidel, A., Spierings, A. et al.Ukwelula impilo yempushana ekukhiqizeni okungeziwe: ukufakwa kwamakhemikhali kwe-stainless steel spatter.I-Additive Manufacturing Letters 100057 (2022).https://www.sciencedirect.com/science/article/pii/S3027200
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USurbhi Jain ungumbhali wezobuchwepheshe ozisebenzelayo ozinze eDelhi, e-India.Uneziqu ze-Ph.D.Uthole i-PhD ku-Physics eNyuvesi yaseDelhi futhi wabamba iqhaza emisebenzini eminingana yesayensi, amasiko nezemidlalo.Isizinda sakhe semfundo sisocwaningweni lwesayensi yezinto ezibonakalayo, ugxile ekuthuthukisweni kwemishini yokubona nezinzwa.Unolwazi oluningi ekubhaleni okuqukethwe, ukuhlela kanye nedatha yocwaningo lwephephabhuku engu-7 eshicilelwe kanye nedatha yocwaningo lwe-2 yephrojekthi. Amalungelo obunikazi amaNdiya asuselwe emsebenzini wakhe wocwaningo.Unentshisekelo yokufunda, ukubhala, ucwaningo nobuchwepheshe, uthanda ukupheka, ukulingisa, ukwenza ingadi nemidlalo.
I-Jainism, i-Subi.(24 May 2022).Indlela entsha yokuhlanganisa amakhemikhali isusa ama-oxide ensimbi engenasici ene-splash powder.AZOM.Ibuyiswe ngomhla ka-Julayi 21, 2022 kusukela ku-https://www.azom.com/news.aspx?newsID=59143.
I-Jainism, i-Subi.”Indlela entsha yokuhlanganisa amakhemikhali yokususa ama-oxide kumpushana we-stainless steel oxidized stainless steel spatter”.AZOM.Julayi 21, 2022..
I-Jainism, i-Subi.”Indlela entsha yokuhlanganisa amakhemikhali yokususa ama-oxide kumpushana we-oxidized stainless steel spatter”.AZOM.https://www.azom.com/news.aspx?newsID=59143.(Kufinyelelwe zingama-21 kuJulayi 2022).
I-Jainism, i-Subi.2022.Indlela entsha yokuhlanganisa amakhemikhali yokususa ama-oxides ku-splash steel stainless powder powder.AZoM, ifinyelelwe ngoJulayi 21, 2022, https://www.azom.com/news.aspx?newsID=59143.
Kwa-Advanced Materials ngoJuni 2022, i-AZoM yakhuluma noBen Melrose we-International Syalons mayelana nemakethe yezinto ezithuthukisiwe, i-Industry 4.0, kanye nokuphushela ku-zero.
Kwa-Advanced Materials, i-AZoM ikhulume noVig Sherrill kaGeneral Graphene mayelana nekusasa le-graphene nokuthi ubuchwepheshe babo bokukhiqiza inoveli buzonciphisa kanjani izindleko zokuvula umhlaba omusha wezinhlelo zokusebenza esikhathini esizayo.
Kule ngxoxo, i-AZoM ixoxa noMongameli we-Levicron uDkt. Ralf Dupont mayelana namandla e- (U)ASD-H25 motor spindle entsha embonini ye-semiconductor.
Zitholele i-OTT Parsivel², imitha yokususwa kwe-laser engasetshenziswa ukukala zonke izinhlobo zemvula.Ivumela abasebenzisi ukuthi baqoqe idatha ngosayizi nesivinini sezinhlayiya eziwayo.
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Lesi sihloko sihlinzeka ngokuhlolwa kokuphela kwempilo kwamabhethri e-lithium-ion, ngokugxila ekugayeni kabusha inani elikhulayo lamabhethri e-lithium-ion asetshenzisiwe ukuze kunikwe amandla izindlela eziqhubekayo neziyindilinga zokusebenzisa ibhethri nokuphinda lisetshenziswe.
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Ngenxa yokwanda kwesidingo samandla, isidingo sikaphethiloli wenuzi siyanda, okuholela ekwenyukeni okukhulu kwesidingo sobuchwepheshe bokuhlolwa kwe-post-irradiation (PIE).