isiZulu
Kwadalwa ngo 09.09
Umswakama Nokukhishwa Kwezinhlayiya: Ukuthi Ukuphela Kobuso Kuthinta Kanjani Ubumsulwa Begesi
Ezimisweni zanamuhla zegesi ehlanzekile kakhulu, umehluko phakathi kwenqubo enenzuzo kanye nokwehluleka okubizayo ngokuvamile uncike kulokho ongakuboni. Umswakama kanye nezinhlayiyana — ezikalwa ngezingxenye zebhiliyoni noma ngisho nezingxenye zetriliyoni — kungangcolisa ngokuthula umfudlana wegesi, kwehlise izinga lomkhiqizo, futhi kumise imigqa yokukhiqiza yama-semiconductor. Nakuba imishini yokuhlunga, yokuhlanza, kanye nokulawula ukugeleza ithola ukunakwa okukhulu, enye yezinto eziyisisekelo kakhulu ezithonya ukuhlanzeka kwegesi iyingaphezulu yamapayipi ahambisa igesi. Indlela leyo ngaphezulu eqedwa ngayo inquma ukuthi ingakanani umswakama engawumunca, ukuthi zingaki izinhlayiyana ezingazibamba, kanye nokuthi ingakanani izokhipha umoya ngokuhamba kwesikhathi kohlelo. Lo mhlahlandlela uchaza izindlela zokukhipha umswakama nezinhlayiyana, ulinganise umthelela wokuqedwa kwengaphezulu ekuhlanzekeni kwegesi, futhi uchaza amasu okuqeda nokusebenza asetshenziselwa ukuletha ukusebenza kwegesi ehlanzekile kakhulu (UHP).
Kuyini Ukukhishwa Kwegesi Futhi Kungani Kubalulekile?
Ukuphuma komoya ukukhululwa kancane kancane kwamagesi nomswakama osekunamathele noma omunye emhlabeni wento noma oncibilikisiwe ezingxenyeni zayo eziseduze nomhlaba. Ukukhululwa kuqalwa lapho ingcindezi ezungezile yehla, izinga lokushisa likhuphuka, noma igesi yokuhlanza idlula emhlabeni — izimo ezitholakala ngqo ezinhlelweni zokuletha igesi, emakamelweni e-vacuum, nasezinsizeni zokuhlaziya. Ezinhlelweni zensimbi engagqwali, umhwamuko wamanzi uwukungcola okuphuma komoya okuvame kakhulu, kulandele ama-hydrocarbon nezinsalela zenqubo ezisele.
Ngisho nasemazingeni okugxila abonakala engasho lutho, umswakama ungasebenza namagesi akhethekile, wenze izinhlayiya, ukhohlise ukufundwa kokuhlaziya, futhi ulimaze izingxenye ezibucayi ezifana nezilawuli zokugeleza kwesisindo, amavalvu, namagumbi okufaka. Njengoba ubukhulu bemishini buncipha futhi amawindi enqubo eqina, imboni ye-semiconductor isiphakamise izidingo zokuhlanzeka kwegesi ukusuka ezingxenyeni ngezigidi (ppm) kuya ezingxenyeni ngezigidigidi (ppb) nasezingxenyeni ngezigidigidi eziyinkulungwane (ppt). Kulawa mazinga, ukuqedwa kwendawo yamapayipi akuseyona imininingwane encane — manje sekuyincazelo eyinhloko okufanele yakhiwe, iqinisekiswe, futhi igcinwe kusukela embonini kuya ethuluzini.
Izindlela Eziyisisekelo
Indawo Yendawo Yangempela Ekhulisiwe
Indawo emangelengele inendawo ebanzi kakhulu encane kunezindawo ebushelelezi, futhi indawo eningi isho izindawo eziningi lapho umswakama ungakwazi ukunamathela khona. Ubudlelwano abulona olulandelanayo: ukumangelengeleka okunjengamaqongo, izigodi, nezinyathelo zemingcele yezinhlamvu kuphindaphinda indawo esebenzayo etholakalayo yokumuncwa. Ukunciphisa ukumangelengeleka kwendawo — okukalwa nge-Ra, ukusuka okulinganiselwe kwezibalo kwesimo sendawo — kusuka ku-0.8 µm kuya ku-0.25 µm kungaqeda ingxenye enkulu yezindawo zokumuncwa, ngoba imifantu ejulile, egcina amanzi ngokunamathela kakhulu, isuswa ngokuphelele. Yingakho ukuqedwa kwendawo kuvame ukuchazwa njengendawo ecashile yokugcina umswakama enquma ukuthi uhlelo kufanele luhlanzwe isikhathi esingakanani ngaphambi kokuba lufinyelele ezingeni lokuhlanzeka eliyisisekelo.
Ukumuncwa Komswakama Nokukhishwa Kwegesi
Umswakama wakha izibopho eziqinile nezingaphezulu zensimbi, ikakhulukazi nezingqimba ze-oxide ezikhula ngokwemvelo ku-stainless steel. Ebusweni obudlulisiwe, obugcwele i-chromium, ama-molecule amanzi aqala ngokunamathela ngqo ku-oxide, bese akhula njengezingqimba ze-physisorbed ezilandelanayo. Lapho ishubhu kamuva ivezwa ku-vacuum noma igesi egelezayo, lezi zingqimba ziyanyamalala kancane kancane: izingqimba zangaphandle eziboshwe ngokuxekethile zikhululwa kuqala, kuyilapho amanzi e-chemisorbed aqhubeka futhi adinga amandla, ngokuvamile ngesimo sokushisa, ukuze akhululwe. Umphumela ongokoqobo ukuthi ishubhu esanda kufakwa noma esingaqedwanga kahle sizokhipha umswakama emfudlaneni wegesi amahora noma izinsuku, sandise isikhathi sokuhlanza futhi sigcine ukuhlanzeka ngaphansi kwezidingo.
Ukubanjwa Kwezinhlayiyana
Imifantu emincane kakhulu, izimbobo, kanye nezingqimba ezingaphezulu ezimahhadlahhadla zisebenza njengezindawo zokugcina izinhlayiya. Ngesikhathi sokusebenza okuvamile lezi zinhlayiya zingahlala zibambekile, kodwa ukushintsha kwezinga lokushisa, ukudlidliza, noma ukushintsha okungazelelwe kwendlela nokushesha kokugeleza kungazikhipha, kuthumele ukuqhuma kokungcola emseleni wegesi. Ekukhiqizeni ama-semiconductor, inhlayiya eyodwa ingadala isici esibulalayo ku-wafer, futhi izinhlayiya ezihlala emilenzeni efile noma emigodini yama-valve kunzima kakhulu ukuzisusa uma uhlelo selusebenza. Izindawo ezibushelelezi, ezingenamifantu azinciphisi nje kuphela inani lezinhlayiya ezikhiqizwayo, kodwa futhi zenza izindawo ezisele zibe lula kakhulu ukuzihlanza nokuziqinisekisa.
Umthelela Ekuhlanzekeni Kwegesi
Ukukhethwa kokuqedwa kwendawo kuba nomthelela oqondile, olinganisekayo ekuhlanzekeni kwegesi, isikhathi sokuhlanza, nokuzinza kwesikhathi eside. Izindawo ezimahhadlahhadla ezisesigabeni sika-Ra 0.5–0.8 µm — okuvamile kushubhu edonswe ngamakhaza engacwengiswanga — zigcina umswakama nezinhlayiya eziningi. Zikhipha umoya ngamandla amakhulu, zidinga isikhathi eside sokuhlanza, futhi ngokuvamile zifaneleka kuphela ezinhlelweni zezinga le-ppm lapho ukungcola okwenzeka ngezikhathi ezithile kwamukelekile. Izindawo ezibushelelezi ezisesigabeni sika-Ra ≤ 0.25 µm, ngokuvamile ezikhiqizwa ngokucwengiswa ngogesi (EP), ziziphatha ngendlela ehluke kakhulu: zinikeza izindawo zokunamathela ezimbalwa, zikhipha umoya omncane, futhi zikhiqiza izinhlayiya ezimbalwa kakhulu. Umthelela ulinganisiwe ezifundweni ezishicilelwe; ucwaningo olulodwa nge-titanium lwabonisa ukuthi ukuncipha ngo-35% kobumahhadlahhadla bendawo kwaholela ekuncipheni ngo-30% kwamanzi akhishwa umoya, futhi izitayela ezifanayo zibhalwe nge-stainless steel. Ezinhlelweni zokuhlanzeka okuphezulu kakhulu kwezinga le-ppb ne-ppt, izindawo ezicwengiswe ngogesi akuzona into yokunethezeka — ziyimfuneko.
Indlela Ukuqedwa Kwendawo Okuthinta Ngayo Ukusebenza Kohlelo
Isiphetho sendawo sithonya okuningi kunokukhishwa kwegesi. Sithonya isikhathi sokuhlanza (izindawo ezibushelelezi zifinyelela umswakama oyisisekelo ngokushesha), ukudilika kwezinhlayiyana ngaphansi kokugeleza, ukumelana nokugqwala (izindawo ze-EP ezivikelwe, ezicebile nge-chromium zimelana nokungcoliswa kabusha), kanye nokuhlanzeka (izindawo ezibushelelezi zikhipha izinto zokuhlanza namanzi okuhlanza ngokuphelele). Sithonya futhi ukusebenziseka kokushisela: isiphetho sendawo esihlanzekile, esilawulwayo sikhiqiza izinga lokushisela okujikelezayo okungaguquguquki, kunciphisa ingozi yezinto ezingafakiwe kanye nokushintsha kombala okushisayo okungaba imithombo yokungcola esizayo.
Ukuqedwa Kwendawo | I-Ra Ejwayelekile | Ukugcinwa Komswakama | Ingozi Yezinhlayiyana | Izinga Elijwayelekile Lokuhlanzeka | Izicelo Ezivamile |
Idonswe ngamakhaza / ukuqedwa kwesigayo | ≥ 0.8 µm | Phezulu | Phezulu | ppm | Ukuhamba kwemboni evamile |
I-Acid pickled & passivated (AP) | 0.4–0.8 µm | Phakathi nendawo | Phakathi nendawo | ppm | Amapayipi okucubungula, ukudla neziphuzo |
I-Bright annealed (BA) | 0.25–0.4 µm | Phansi | Phansi | ppb | Inqubo yokuhlanzeka okuphezulu, ezemithi |
I-Electropolished (EP) | ≤ 0.25 µm | Kuncane kakhulu | Kuncane kakhulu | ppb–ppt | Igesi le-UHP, i-semiconductor |
Amasu Okunciphisa
Ukuthola nokugcina ukuhlanzeka okuphezulu kwegesi kudinga inhlanganisela yezindlela, ngayinye ibhekana nomzila ohlukile wokungcola.
Ukuhlolwa Kwendawo
I-Electropolishing (EP) iyindinganiso yegolide yezinhlelo ze-UHP. Le nqubo isusa ungqimba oluncane, olulawulwayo lwensimbi endaweni, ilinganisa iziqongo ezincane, ivule futhi iqede izikhala, futhi inothisa okuqukethwe kwe-chromium kufilimu ye-passive — okwenza indawo ikwazi ukumelana nokugqwala kakhulu futhi ingagcini umswakama kakhulu. Lapho ucacisa isitimela segesi le-UHP, khethaishubhu elingenamthungo elihlanjululwe nge-electropolishedezakhiweni ezimanzi futhi uhambise izingxenye ekugcineni okufanayo; ukuxuba izingcina ngaphakathi kohlelo olulodwa kubukela phansi ukuhlanzeka kwengxenye yonke. Ezinhlelweni ezingadingi kakhulu, i-acid pickling ne-passivation (AP) kanye ne-bright annealing (BA) zinikeza ibhalansi enhle yokuhlanzeka nezindleko.
Ukuhlanza Nokuphatha
Ukuqedwa kwendawo kuphela akwanele — ukuhlanza okunzulu kususa izinsalela zokukhiqiza, amafutha, kanye nomswakama oshiywe izinyathelo zokucubungula zangaphambili. Izindlela ezijwayelekile zihlanganisa ukususa amafutha nge-alkaline, ukuhlanza nge-ultrasonic, nokugeza ngamanzi e-deionized, kulandele ukomiswa endaweni ehlanzekile kanye nokupakishwa ngokuvikelwa okuvaliwe, okufakwe izikhwama ezimbili. Ukuqaphela ekubambeni kubalulekile ngokufanayo: amagilavu, amathuluzi ahlanzekile, kanye nokugcinwa okumboziwe kuvimbela ukungcola kabusha phakathi kwesigayo nokufakwa kokugcina.
Ukubhaka
Ukushisa izingxenye ngaphansi kwe-vacuum noma ngegesi egelezayo ephumayo kusheshisa ukukhishwa komhwamuko wamanzi, kususa umswakama obungaphuma ungene emgudwini wenqubo ngesikhathi sokusebenza. Ukubhaka kubaluleke kakhulu kuma-valve, izixhumi, kanye namalunga ashiselwe, lapho ukuma kanye nezindawo ezithintekile ukushisa kwakha izindawo ezifihlekile zomswakama. Kuhlanganiswe ne-inert purge, ukubhaka kunganciphisa isikhathi uhlelo olusha oludingayo ukufinyelela ukuhlanzeka okuyisisekelo kusuka ezinsukwini kuya emahoreni.
Ukuhlanza
Ukuhambisa igesi engasebenzi, ngokuvamile i-nitrogen noma i-argon, ohlelweni kudlulisa ukungcola okukhishwe yigesi futhi kuvimbele umswakama ukuthi ungaphinde umunce. Ukuhlanza kuyisinyathelo sokuqalisa kanye nomkhuba oqhubekayo: izinhlelo eziklanywe kahle zigcina ukuhlanza okuphansi okungaguquki ezingxenyeni zokulinda futhi zisebenzisa igesi yokuhlanza enenhlanzeko ephezulu ukuze ukuhlanza uqobo kungabi umthombo wokungcola.
Ukukhethwa Kwezinto
Ukusebenzisa izinto ezikhipha umoya kancane kunciphisa imithombo yokungcola kwangaphakathi ngaphambi kokuba ibe khona. Ekusetshenzisweni kwe-UHP, insimbi engagqwali engu-316L ekhiqizwa nge-VIM-VAR (ukuncibilikiswa nge-vacuum induction okulandelwa ukuncibilikiswa kabusha nge-vacuum arc) iyindinganiso yemboni: ukuncibilikiswa kabili nge-vacuum kunciphisa izinto ezingezona ezensimbi ezihlanganisiwe futhi kukhiqiza ukwakheka okuminyene, okufanayo okulula ukuqedela ngokuhlanzekile futhi okungajwayele ukukhipha umoya. Izinto zekhwalithi ephansi ezinezinto ezihlanganisiwe zingahlula ngisho nokuqedwa kwaphezulu kobuso, ngoba izinto ezihlanganisiwe zisebenza njengezindawo zokuqala zokugqwalala nokukhiqizwa kwezinhlayiyana.
Ukukhetha Ukuqedwa Kwendawo Okufanele Kuhlelo Lakho
Izimboni nezinqubo ezahlukene zinezidingo zokuhlanzeka ezihlukene, futhi ukuqedwa okufanele kulinganisela ukuhlanzeka nezindleko kanye nokutholakala. Ezinhlelweni lapho ukuhlanzeka kwezinga le-ppb kwanele — isibonelo, imigqa yenqubo yokuhlanzeka okuphezulu kanye nezinsiza zemithi — i-ishubhu elingenamthungo elishiswe kahle (BA) inikeza ukulinganisela okuhle kakhulu kwekhwalithi yendawo, ukulawulwa kobukhulu, kanye nezindleko. Emsebenzini odinga kakhulu, impahla ye-electropolished icaciswa ngaphandle kokuyekethisa.
- Ukukhiqizwa kwe-semiconductor ne-flat-panel: ukuqedwa kwe-EP, i-Ra ≤ 0.25 µm, i-316L VIM-VAR, efakwe izikhwama ezimbili futhi iqinisekiswe nge-batch. Ukukhishwa kwegesi kanye nesabelomali sezinhlayiyana kuchazwa nge-ppb–ppt futhi kuphoqelelwa ngezincazelo zendawo kanye nenani lezinhlayiyana.
- Amagesi akhethekile kanye ne-electronic: amashubhu e-EP noma e-BA yezinga eliphezulu anokuqedwa kwangaphakathi okulawulwayo; amakhabethe egesi namaphaneli okusabalalisa adinga ikhwalithi engaguquki kuzo zonke izingxenye.
- Imithi kanye ne-biotech: Izindawo ze-EP noma ze-BA ezilula ukuzihlanza nokuqinisekisa, ezihlangabezana nemihlahlandlela yokuqedwa kwendawo ye-ASME BPE futhi ezisekela imijikelezo ye-CIP/SIP.
- Amathuluzi okuhlaziya kanye ne-gas chromatography: ishubhu lamathuluzi
- Inqubo evamile kanye nokuhamba kwemboni: Ukuqedwa kwe-AP noma kwe-BA kunikeza ukuhlanzeka okwanele kusizo lwezinga le-ppm ngezindleko eziphansi.
Izindinganiso Zemboni Nezincazelo
Ukucacisa ukuqedwa kwendawo ngokunembile kudinga ulimi olufanayo. I-Ra (i-arithmetic mean roughness) iyipharamitha esetshenziswa kakhulu, kodwa izinhlelo zokusebenza ezibalulekile zibuye zibhekisele ku-Rz, Rmax, kanye nenani eliphakeme, kanye namazinga okulinganisa ukukhuhlana kwendawo njenge-SEMI F19. Emashubhuni ensimbi engagqwali, izinkomba ezivamile zifaka i-ASTM A269 ne-A270 yamashubhu angenasici futhi ahlanzekile, i-ASME BPE yemishini yokucubungula izinto eziphilayo, kanye namazinga e-SEMI ezinhlelo zokusebenza ze-semiconductor. Lapho incazelo ifuna izinga le-EP, kufanele iveze inani le-Ra, indlela yokulinganisa, kanye nemibandela yokwamukela — isibonelo, "Ra ≤ 0.25 µm, kulinganiswa nge-stylus profilometry endaweni yangaphakathi, ihlolwe ngokuphelele futhi iqinisekiswe."
Imibuzo Evame Ukubuzwa
Umbuzo: Yiliphi inani le-Ra elibhekwa njengezinga le-UHP?
Impendulo: Izinhlelo ze-ultra-high purity ngokuvamile zicacisa i-Ra ≤ 0.25 µm, futhi ama-semiconductor fab amaningi adinga i-Ra ≤ 0.13 µm ezindaweni ezine-electropolished. Isidingo esiqondile sincike enqubweni nasezingeni lokuhlanzeka elinikezwayo.
Umbuzo: Ingabe i-electropolishing isusa izinhlayiya?
I: I-Electropolishing isusa ungqimba lwensimbi olulawulwayo, okususa iziqongo ezincane, amalaphu, nezikhala lapho izinhlayiya nomswakama kucasha khona. Akuthathi indawo yokuhlanza: ingxenye ehlanzwe kahle nge-electropolishing kumele isahlanzwe, igezwe, futhi ipakishwe ngaphansi kwezimo ze-cleanroom.
U: Ukuqedwa kwendawo kukuthinta kanjani isikhathi sokukhipha umoya?
I: Izindawo ezimahhadlahhadla zigcina umswakama omningi futhi ziwukhipha kancane kancane, ngakho ukufinyelela ukuhlanzeka okuyisisekelo kuthatha isikhathi eside. Izindawo ezibushelelezi ezenziwe nge-electropolishing zinganciphisa isikhathi sokukhipha umoya ngamahora noma ngezinsuku, okuhumusha ngqo ekuqaliseni okusheshayo nokunciphisa isikhathi sokuphazamiseka.
U: Ingabe ishubhu le-bright annealed (BA) lanele ezinhlelweni zegesi?
A: Ithubhu le-BA eline-Ra cishe elingu-0.25–0.4 µm lifanele izinhlelo eziningi zokuhlanzeka okuphezulu kanye nezokusetshenziswa kwezokwelapha. Ekusetshenzisweni kwe-ppb–ppt kwe-semiconductor negesi ekhethekile, ukuqedwa ngogesi (electropolishing) ngokuvamile kuyadingeka.
Umbuzo: Iyiphi into engcono kakhulu yezinhlelo zegesi ezinhlanzeko ephezulu kakhulu?
Impendulo: Insimbi engagqwali engu-316L ekhiqizwe ngokuncibilikiswa kwe-VIM-VAR iyisinqumo esijwayelekile sezinhlelo zegesi ezinhlanzeko ephezulu kakhulu ngenxa yokuqukethwe kwayo okuncane kwezinto ezingcolisayo kanye nokwakheka kwesakhiwo esihlanzekile nesingaguquguquki.
Isiphetho
Ikhwalithi yobuso ayisona isici sobuhle nje sensimbi engagqwali — iyincazelo yokusebenza elawula ukumuncwa komswakama, ukugcinwa kwezinhlayiyana, nokukhipha umoya kulo lonke ukuphila kwesistimu yegesi. Ukuphela kobuso okubushelelezi kuyisidingo sangaphambili sokufinyelela nokugcina amazinga aphezulu kakhulu okuhlanzeka kwegesi. Ngokucacisa ukuphela okufanele — i-electropolished yesevisi ye-UHP, i-bright annealed noma i-pickled ne-passivated yezinhlelo ezingadingi kangako — ngokuyihlanganisa nempahla ekhipha umoya kancane efana ne-316L VIM-VAR insimbi engagqwali, nokuyisekela ngezinqubo eziqinile zokuhlanza, ukubhaka, nokuhlanza ngegesi, onjiniyela bangakha izistimu zokuletha igesi ezihlangabezana nezinhloso zokuhlanzeka ezidinga kakhulu ngokuthembekile futhi bazigcine zikuleso simo kulo lonke ukuphila kwesikhungo.
Othintwayo
Shiya imininingwane yakho futhi sizokuthinta.