Ukusetshenziswa Kwezimpuphu Zensimbi Embonini
Impuphu yensimbi iyinto esesimweni sezinhlayiya ezincane zensimbi emsulwa noma i-alloy ekhiqizwa ngezinqubo zomzimba noma zamakhemikhali. Emashumini eminyaka amuva nje, ukusetshenziswa kwempuphu yensimbi kukhule ngokushesha ngenxa yamandla ayo okunikeza ukusebenza kahle kokukhiqiza, ukuguquguquka komklamo, kanye nezakhiwo zezinto ezingenziwa ngokwezidingo. Impuphu yensimbi iyisisekelo sobuchwepheshe obuhlukahlukene bokukhiqiza besimanje, kusukela ekusetshenzisweni kwe-powder metallurgy kanye nokunyathelisa kwensimbi ye-3D (ukukhiqiza okwengeziwe), ukumbozwa kobuso, kuya ekusetshenzisweni kwamakhemikhali namandla. Lesi sihloko sixoxa ngokusetshenziswa kwempuphu yensimbi emikhakheni eyahlukene yezimboni, izinzuzo zayo, kanye nezinselele okudingeka kubhekwane nazo.
1. I-Powder Metallurgy Yokukhiqiza Okukhulu
Indlela ejwayelekile yokusebenzisa izimpushana zensimbi yi-powder metallurgy. Le ndlela ngokuvamile ihilela ukuxuba izimpushana, ukuzihlanganisa (ukuzicindezela) esikhumbeni, bese zishiswa (ukushisa ngaphansi kwephuzu lokuncibilika) ukuze kuhlanganiswe izinhlayiya zibe yingxenye eqinile. Inzuzo eyinhloko ye-powder metallurgy yikhono layo lokukhiqiza izingxenye ezine-tolerances eqinile kanye nemfucuza yezinto ezibonakalayo ephansi uma kuqhathaniswa nemishini evamile.
Embonini yezimoto, lobu buchwepheshe busetshenziswa kabanzi ukukhiqiza amagiya, ama-bushing, ama-sprocket, izingxenye zokudlulisela, kanye nezingxenye ezahlukene zesakhiwo ezincane kuya kweziphakathi. Eziningi zalezi zingxenye zidinga amandla amakhulu kodwa zikhiqizwa ngobuningi obukhulu kakhulu. Ukusatshalaliswa kwe-powder kuvumela abakhiqizi ukunciphisa izindleko zamayunithi nokuqeda izinyathelo ezengeziwe zokucubungula.
Ngaphezu kwalokho, le nqubo ivumela ukukhiqizwa kwezingxenye ezinezimbobo, njengezinsimbi zokuthambisa ezizisebenzisayo. Le mikhiqizo isebenzisa ama-micropores ezintweni ezisikiwe ukuze igcine amafutha okuthambisa, okwenza afaneleke ukusetshenziswa okudinga ukulungiswa okuncane.
2. Ukukhiqiza Okungeziwe (Ukuphrinta Kwensimbi Ye-3D)
Intuthuko ebalulekile ekusetshenzisweni kwezimpushana zensimbi namuhla ukukhiqizwa okungeziwe (AM), noma ukuphrinta kwensimbi kwe-3D. Ubuchwepheshe obufana ne-Selective Laser Melting (SLM), i-Direct Metal Laser Sintering (DMLS), kanye ne-Electron Beam Melting (EBM) busebenzisa izimpushana zensimbi njengezinto zokusetshenziswa, ezibe sezincibilikiswa noma zihlanganiswe ungqimba ngengqimba.
Inzuzo eyinhloko ye-AM inkululeko yokuklama. Izingxenye zingakhiqizwa nge-geometri eziyinkimbinkimbi okunzima noma okungenakwenzeka ukuzifeza ngomshini wendabuko, njengeziteshi zangaphakathi, izakhiwo ze-lattice zokunciphisa isisindo, kanye nezimo eziphilayo ezilungiselelwe ngokulingisa. Lokhu kuwusizo ikakhulukazi embonini yezindiza, lapho ukunciphisa isisindo sezingxenye kuhumusha khona ukonga uphethiloli kanye nokusebenza okuthuthukisiwe.
Embonini yezokwelapha, i-titanium alloy powder ivame ukusetshenziselwa ukubumba ama-orthopedic implants kanye nama-dental implants. Ama-implants angenziwa ngokwezifiso ngokwe-anatomy yesiguli, futhi isakhiwo sobuso singaklanywa ukuthi sibe nezimbobo ukuze kube lula ukuhlanganiswa kwe-osseo, ukukhula kwethambo elizungeze i-implant.
Kodwa-ke, i-AM idinga nokulawulwa kwekhwalithi okuqinile. Usayizi wezinhlayiya, ukusatshalaliswa kosayizi, ububanzi, okuqukethwe yi-oxygen, kanye nokuhlanzeka kwempuphu kuthinta kakhulu ikhwalithi yokuphrinta.
3. Ukuvikelwa Kokumbozwa Komphezulu Nokugqwala
Izimpushana zensimbi zisetshenziswa kabanzi ekumbozweni kwendawo ngezinqubo zokufutha ezishisayo, njenge-plasma spray, i-HVOF (High Velocity Oxygen Fuel), kanye ne-flame spray. Kulezi zindlela, i-powder iyashiswa futhi ibekwe phezu kwengxenye ukuze yakhe ungqimba oluvikelayo noma olusebenzayo.
Izicelo zokufaka upende zibalulekile embonini kawoyela negesi, ekukhiqizweni kwamandla kagesi, nasekukhiqizweni kwemishini esindayo. Izingxenye ezisebenza emazingeni okushisa aphezulu, ezindaweni ezigqwalayo, noma ezikhuhlayo zingavikelwa ukuze zandise impilo yazo yesevisi. Izibonelo zifaka phakathi upende olusekelwe ku-nickel lokumelana nokushisa nokushiswa kwe-oxidation, noma upende olusekelwe ku-tungsten carbide lokumelana nokuguga okuphezulu.
Ngaphezu kokwandisa ukumelana kobuso, izembozo ezenziwe ngempuphu yensimbi zinganikeza nemisebenzi ekhethekile, isibonelo ukwandisa ukuhanjiswa kukagesi, ukwandisa ukubonakaliswa, noma ukudala isembozo sokuvimbela ukushisa kuma-turbine.
4. Imboni Yezinto Zogesi Nokuqhuba Ugesi
Embonini ye-elekthronikhi, izimpushana zensimbi ezifana nesiliva, ithusi, kanye ne-nickel zisetshenziswa njengezinto zokuhambisa umoya kuma-paste kagesi, kuma-ink okuhambisa umoya, kanye nezingxenye zokushisa okuphansi. Lezi zinhlelo zokusebenza ziya ngokuya zibaluleke njengoba amadivayisi kagesi eba mancane, aguquguqukayo, futhi egcina amandla kahle.
Uyinki oqhubayo osekelwe kumpuphu wesiliva, isibonelo, usetshenziswa kuma-elekthronikhi aphrintiwe ukudala izindlela zokuqhubayo kuma-substrate e-polymer. Impuphu yethusi, okwamanje, inikeza izindleko eziphansi, yize inzima kakhulu ngoba i-oxidize kalula futhi idinga ukuvikelwa okukhethekile noma ukwakheka.
Izimpushana zensimbi nazo zisetshenziswa ekwakhiweni kwezingxenye ezisebenza ngogesi, njenge-inductor cores noma izingxenye ze-electrical motor. Impushana yensimbi noma ama-alloy ayo angacutshungulwa abe izinto ezithambile ezisebenza ngogesi ezinezakhiwo ezilungiselelwe ukunciphisa ukulahleka kumaza athile.
5. Ama-Catalyst kanye nezinqubo zamakhemikhali zezimboni
Ezinye izimpushana zensimbi zisebenza njengezinto ezithuthukisa izimboni zamakhemikhali. Isibonelo, izimpushana ze-nickel, i-platinum, i-palladium, noma zethusi zisetshenziselwa ukusheshisa i-hydrogenation, i-oxidation, noma ukusabela kokuguqula. Ezingeni lezimboni, izimpushana zivame ukulungiswa ngezindlela ezandisa indawo yazo ebusweni, kanti izimpushana zensimbi—kungaba ezihlanzekile noma ezihlakazekile esisekelweni—ziyathandwa ngenxa yokusabela kwazo okuphezulu.
Ekukhiqizweni kwamakhemikhali kaphethroli kanye namakhemikhali ayisisekelo, ama-catalyst asekelwe ensimbi asiza ekwandiseni ukusebenza kahle kokusabela, anciphise ukusetshenziswa kwamandla, futhi alawule ukukhetha komkhiqizo. Nakuba ukusetshenziswa kwezinsimbi eziyigugu kubiza kakhulu, izinzuzo zivame ukuba zifanele, njengoba ama-catalyst angavuselelwa futhi isivuno sokukhiqiza singanda.
6. Amandla: Amabhethri, Amaseli Kaphethiloli, kanye Nobuchwepheshe Obusha
Imboni yamandla isebenzisa futhi izimpushana zensimbi. Emabhethrini, izimpushana ezithile zensimbi zisetshenziswa njengezinto ze-electrode noma izithasiselo eziqhuba ugesi. Isibonelo, i-nickel powder isetshenziswa kwezinye izinhlobo zamabhethri, kuyilapho ithusi lisetshenziswa njengomqoqi wamanje. Kumaseli kaphethiloli kanye nama-electrolyzer, izinto ezisekelwe ku-metal powder nazo zisetshenziswa njengezinto ezibangela ugesi noma izingxenye ze-electrode.
Ngaphezu kwalokho, izimpushana ze-aluminium ne-magnesium zisetshenziswa ezinhlotsheni eziningana zamandla ngenxa yokusabela kwazo kanye nobuningi bamandla. Ocwaningweni, izimpushana zensimbi nazo ziyahlolwa ukuze kugcinwe amandla kanye nokukhiqizwa kwe-hydrogen ngokusebenzisa ukusabela okuthile, yize ukusetshenziswa kwazo kuncike ekuphepheni, izindleko, kanye nokuzinza kwenqubo.
7. Imboni Yezokuvikela Nezinto Ezikhethekile
Izimpushana zensimbi zidlala indima ebalulekile ekukhiqizweni kwezinto ezikhethekile ezifana nama-alloy anamandla aphezulu, izinhlanganisela ze-metal matrix, kanye nezinto ezakhiwe nge-gradient. Embonini yezokuvikela, izinto ezisekelwe ku-powder zingasetshenziswa ezingxenyeni zesakhiwo ezilula, izingxenye zezikhali, noma izinhlelo ezithile zokuvikela, ikakhulukazi lapho kudingeka inhlanganisela yamandla, ubulukhuni, kanye nokunciphisa isisindo.
Ubuchwepheshe bempuphu buphinde buvumele ukukhiqizwa kwezinto okunzima ukuzikhiqiza kusetshenziswa izindlela zokubumba, njenge-alloys ezinamazinga aphezulu okuncibilika noma izinto ezihlukanisa kalula ngesikhathi sokuqina. Ngakho-ke, izimpuphu zensimbi zivula izinketho zezinto ezintsha, ezizinzile nezifanayo.
8. Izinselele: Ikhwalithi, Ukuphepha, kanye Nokuzinza
Naphezu kokusetshenziswa kwayo okubanzi, ukusetshenziswa kwempuphu yensimbi kubhekene nezinselele. Okokuqala, ikhwalithi yempuphu ibalulekile emkhiqizweni wokugcina. Amapharamitha anjengobukhulu bezinhlayiya kanye nesimo, okuqukethwe yi-oxygen, okuqukethwe komswakama, kanye nokungcola kumele alawulwe ngokuqinile. Okwesibili, ukuphepha emsebenzini kuyinto ekhathazayo kakhulu ngoba impuphu yensimbi ecolekile, ikakhulukazi i-aluminium, i-magnesium, ne-titanium, ingavutha noma iqhume ngaphansi kwezimo ezithile. Ngakho-ke, imboni isebenzisa amazinga aqinile okuphatha, ukugcina, ukungenisa umoya, kanye nezinhlelo zokulawula uthuli.
Okwesithathu, ngokombono wokuzinza, ukukhiqizwa kwempuphu yensimbi kudinga amandla futhi akuyona inqubo elula ngaso sonke isikhathi. Kodwa-ke, impuphu yensimbi ingasekela nokusebenza kahle kwezinto ngokunciphisa izinsalela, ivumele ukuphinda kusetshenziswe impuphu ezinqubweni ezithile (isibonelo, ezinye izinhlelo zokuphrinta ze-3D), kanye nokwandisa impilo yezingxenye ngokusebenzisa izembozo.
Isiphetho
Izimpushana zensimbi sezibe yizinto ezisetshenziswayo ezinhle ezimbonini ezahlukahlukene zesimanje. Kusukela ekukhiqizweni ngobuningi kuya ekusetshenzisweni kwensimbi yempushana, ukukhiqizwa okuthuthukisiwe ngokunyathelisa kwensimbi kwe-3D, ukumbozwa kwendawo ukuze kuhlale isikhathi eside, kuya ekusetshenzisweni kwe-elekthronikhi, ama-catalyst, kanye namandla—konke kubonisa ukuthi izimpushana zensimbi azizona nje izinto zokusetshenziswa, kodwa zinikeza amandla obuchwepheshe. Uma sibheka phambili, ukulawulwa kwekhwalithi yempushana okuthuthukisiwe, ukuthuthukiswa kwama-alloy amasha, kanye nokusetshenziswa kwezindinganiso zokuphepha nokusimama kuzonquma kakhulu indima yezimpushana zensimbi ekuqiniseni ukuncintisana kwezimboni.
Uma ufisa, ngingaphinde ngivumelanise lesi sihloko nesimo esithile (isib. imboni yezimoto yase-Indonesia, isifundo senkampani, noma ngifake uhlu lwezincwadi kanye nezinkomba zesayensi).
