Timagwiritsa ntchito makeke kuti tikulitse luso lanu.Mukapitiliza kusakatula tsamba ili mukuvomera kugwiritsa ntchito makeke.Zambiri.
M'nkhani yaposachedwa yomwe idasindikizidwa mu nyuzipepala ya Additive Manufacturing Letters, ofufuza akukambirana za kugwiritsa ntchito phala lachitsulo chosapanga dzimbiri lomwe limapangidwa ndi mankhwala kuti litalikitse moyo wa ufa popanga zowonjezera.
Kafukufuku: Kukulitsa Moyo Waufa mu Zopangira Zowonjezera: Chemical Etching of Stainless Steel Spatter.Image Mawu: MarinaGrigorivna/Shutterstock.com
Metal Laser Powder Bed Fusion (LPBF) Splash particles amapangidwa ndi madontho osungunuka omwe amatulutsidwa mu dziwe losungunuka kapena tinthu tating'ono ta ufa totenthedwa pafupi kapena pamwamba pa malo osungunuka pamene akudutsa pamtengo wa laser.
Ngakhale kugwiritsa ntchito malo osagwira ntchito, chitsulo chapamwamba kwambiri cha reactivity pafupi ndi kutentha kwake kusungunuka kumalimbikitsa oxidation.Ngakhale kuti spatter particles ejected pa LPBF imasungunuka pang'ono pamtunda, kufalikira kwa zinthu zosasunthika kumtunda kungathe kuchitika, ndipo zinthuzi zomwe zimakhala ndi kuyanjana kwakukulu kwa okosijeni zimapanga zigawo za oxide wandiweyani.
Popeza kupanikizika pang'ono kwa okosijeni mu LPBF nthawi zambiri kumakhala kokulirapo kuposa komwe kumachitika mu atomization ya gasi, kuthekera komanga ndi mpweya kumawonjezeka.
zitsulo zosapanga dzimbiri ndi faifi tambala ofotokoza aloyi spatters amadziwika kuti oxidize mofulumira, kupanga zilumba mpaka mamita angapo mu thickness. Komanso, zitsulo zosapanga dzimbiri ndi kaloti faifi tambala ofotokoza, monga amene amapanga chilumba-mtundu okusayidi spatters, ndi zambiri zambiri machined zipangizo mu LPBF, ndi kugwiritsa ntchito njira imeneyi kuti zambiri mmene LPBF LPBF ndi zitsulo njira kusonyeza kuti LPBF zitsulo ndi spatter yovuta.
(a) Chithunzi cha SEM cha particles stainless steel spatter particles, (b) njira yoyesera ya thermal chemical etching, (c) LPBF chithandizo cha deoxidized spatter particles.Ngongole ya zithunzi: Murray, J. W, et al, Additive Manufacturing Letters
Mu phunziro ili, olemba ntchito yatsopano mankhwala etching njira kuchotsa oxides padziko oxidized zosapanga dzimbiri splash powders.Metal kuvunda mozungulira ndi pansi pa zilumba okusayidi pa ufa amagwiritsidwa ntchito ngati njira yaikulu kuchotsa okusayidi, amene amalola kwambiri aukali okusayidi removal.The splash, etch ndi virgin powders anali ofanana masikelo a ufa BLP kuti apange sieved toLPB.
Timu idawonetsa momwe mungachotsere ma trades mu tinthu osapanga dzimbiri, makamaka zomwe zidangokhalira kugwiritsa ntchito ma cpbf ozungulira, chitsulo chosapanga dzimbiri.
Ofufuzawo adayang'ana kutentha komanso ma etchants awiri achitsulo chosapanga dzimbiri. Pambuyo poyang'ana kukula kwake, nyimbo za LPBF zinapangidwa pogwiritsa ntchito ufa wofanana wa namwali, ufa wa splash, ndi ufa wonyezimira bwino.
LPBF ya munthu payekha imapangidwa kuchokera ku spatter, etch spatter, and pristine powder
Kufalikira kwa malo a oxide pa 316L zitsulo zosapanga dzimbiri splash powder kunachepa ndi gawo la 10, kuchokera ku 7% mpaka 0.7% pambuyo poti reagent ya Ralph idatenthedwa mpaka 65 ° C mumadzi osambira kwa ola la 1. Kujambula malo aakulu, deta ya EDX inasonyeza kuchepa kwa mpweya kuchokera ku 13.5% mpaka 4.5%.
Etched spatter imakhala ndi zokutira zotsika za oxide slag pamtunda wamtunda poyerekeza ndi spatter.Kuphatikizansopo, kutsekemera kwa mankhwala a ufa kumawonjezera kutsekemera kwa ufa pamtunda.
Kudutsa lonse la 45-63 µm sieve kukula kwake, zotsalira za agglomerated particles mu etched and untched spatter powders kufotokoza chifukwa chake ma volume a etched and spatters powders ali ofanana, pamene ma volumes a powders oyambirira ali pafupifupi 50% akuluakulu.
Etched spatter imakhala ndi zokutira zocheperako za oxide slag pamtunda wofananira ndi spatter.Pamene ma oxide amachotsedwa ndi mankhwala, ma theka-womangidwa ndi ufa wopanda kanthu amawonetsa umboni wakumangirira bwino kwa ma oxides ochepetsedwa, omwe amachititsidwa ndi kunyowa bwino.
Schematic yosonyeza ubwino wa chithandizo cha LPBF pamene mankhwala amachotsa oxides ku splash powder muzitsulo zosapanga dzimbiri.Kunyowa kwabwino kumatheka pochotsa oxides.Ngongole ya zithunzi: Murray, J. W, et al, Additive Manufacturing Letters
Mwachidule, phunziroli linagwiritsa ntchito njira yopangira mankhwala kuti ipangitsenso zitsulo zosapanga dzimbiri zosapanga dzimbiri zokhala ndi okosijeni mwa kumiza mu reagent ya Ralph, yankho la ferric chloride ndi cupric chloride mu hydrochloric acid.
Olembawo amakhulupirira kuti etching yamankhwala imatha kusinthidwa ndikugwiritsidwa ntchito pamlingo waukulu kukonzanso tinthu tambiri ta spatter kapena ufa wa LPBF, potero kumawonjezera mtengo wa zida zotsika mtengo zopangira ufa.
Murray, JW, Speidel, A., Spierings, A. et al.Kutalikitsa moyo wa ufa popanga zowonjezera: mankhwala etching of stainless steel spatter.Additive Manufacturing Letters 100057 (2022)
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Surbhi Jain ndi mlembi waukadaulo wodziyimira pawokha wokhala ku Delhi, India.Ali ndi Ph.D.Analandila PhD mu Fizikisi kuchokera ku Yunivesite ya Delhi ndipo adachita nawo zochitika zingapo zasayansi, zachikhalidwe komanso zamasewera. Mbiri yake yamaphunziro ndi kafukufuku wa sayansi yazinthu, wokhazikika pakupanga zida zowonera ndi masensa.Ali ndi chidziwitso chochulukirapo pakulemba, kukonza ndi kusanthula mafayilo a 2 Zovomerezeka za ku India zochokera ku ntchito yake yofufuza.Amakonda kuwerenga, kulemba, kufufuza ndi luso lamakono, amakonda kuphika, kuchita masewera, kulima dimba ndi masewera.
Jainism, Subi.(24 May 2022).Njira yatsopano yopangira mankhwala imachotsa ma oxides ku splash steel stainless splash powder.AZOM.Yabwezedwa pa July 21, 2022 kuchokera ku https://www.azom.com/news.aspx?newsID=59143.
Jainism, Subi."Njira yatsopano yopangira mankhwala yochotsera ma oxide kuchokera ku ufa wopaka zitsulo zosapanga dzimbiri".AZOM.July 21, 2022..
Jainism, Subi."Njira yatsopano yopangira mankhwala kuti muchotse ma oxides kuchokera ku ufa wothira zitsulo zosapanga dzimbiri" .AZOM.https://www.azom.com/news.aspx?newsID=59143.(Accessed 21 July 2022).
Chijaini, Subi.2022.Njira yatsopano yopangira mankhwala kuti muchotse ma oxides ku splash steel stainless splash powder.AZoM, yopezeka pa Julayi 21, 2022, https://www.azom.com/news.aspx?newsID=59143.
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