Uma ubona Co 20 eshidini elicacisiwe noma isitifiketi sezinto ezibonakalayo, umcabango osheshayo uvame ukumayelana nokuqukethwe kwe-cobalt. Lona ugibe lokuqala. Emashumini amathathu eminyaka ethu okuphatha ama-alloys asekelwe ku-cobalt ekutshalweni kwezimali kanye nokwenza imishini enembile, ngifunde ukuthi inombolo elandela 'i-Co' ayivamisile ukuba iqonde kanjalo. Kuyi-shorthand, ukuvuma ngekhanda emndenini wama-alloys, futhi ukuhumusha kwayo kungenza noma kwephule ukusebenza kwengxenye ensimini. Amathimba amaningi okuthenga akubona futhi acabange ukuthi athola okokusebenza okujwayelekile, okungaphandle kweshalofu. Iqiniso limbi futhi lithakazelisa kakhulu. Ikhomba iqembu lama-alloys lapho i-cobalt iyisisekelo, kodwa udeveli-kanye nokusebenza-kumanye amaphesenti angu-20-ish wokubunjwa futhi, ngokujulile, umlando wokucubungula.
Ukuqokwa Okungaqondakali
Ake sikusule lokhu: Co 20 akuyona ingxubevange eyodwa, echazwe ngokuqinile njenge-304 engenasici. Kungaphezulu kwelebula yomkhakha wezohwebo noma evamile evame ukukhomba kuma-alloys e-cobalt-chromium, evamise ukuwa ngaphansi kwamazinga afana ne-ASTM F75 noma afanayo. I-'20' ibhekisela ngokukhululekile ububanzi besici sokhiye, ngokuvamile i-chromium, ehlala cishe ku-26-30%, noma ngezinye izikhathi i-molybdenum. Okuqukethwe kwe-cobalt empeleni iningi, ngokuvamile ngaphezu kwama-50%. Ngakho-ke igama licishe libe ukudukisa. Ngichithe amahora amaningi ngishayela izingcingo ngichaza lokhu konjiniyela abebeqiniseka ukuthi umdwebo wabo awulungile. Bazocacisa Co 20 silindele ikhemistri enembile, futhi kuzodingeka sibuyele emuva ezimfuneko zokusebenza zangempela: ukumelana nokuguga, ukumelana nokugqwala emazingeni okushisa aphezulu, ukuhambelana kwezinto eziphilayo? Lokho kusho iresiphi yangempela.
Lokhu kungaqondakali kulapho abasunguli kanye nochwepheshe bemishini bethola khona ukugcina kwabo. Esitolo sethu, i-Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), sibona lokhu kucaciswa kufakelwa izingxenye ezimiselwe isevisi enzima—ukusikwa kwevalvu ekucutshungulweni kwe-hydrocarbon egqwalayo, noma amapuleti okugqoka emishinini yezolimo. Ingxoxo yokuqala ihlezi isuka kokujwayelekile Co 20 esidingweni esithile. Ingabe ingxenye yokugcina yehluleka ngokugwaja? Noma bekuyinkinga yokukhathala kwe-corrosion? Ukulungiswa kwe-alloy kusuka lapho kucashile kodwa kunquma.
Ngikhumbula iphrojekthi yengxenye yevalvu yokuqondisa, mhlawumbe eminyakeni emihlanu emuva. Ukucaciswa kwefa leklayenti kusanda kushiwo Co 20. Bebebhekene nokuvuza ngaphambi kwesikhathi. Sihlaziye ingxenye ehlulekile futhi sathola ukuthi kwakungekona ukumelana nokugqwala kwenqwaba okwakuyinkinga; kwakuyinhlanganisela yobulukhuni obuphansi kanye nokusatshalaliswa kwe-carbide okungekuhle ebusweni bokuvala. Ingxubevange engama-20 abebeyisebenzisa empeleni bekuyi-F75 eyi-cast, elungele izinto eziningi, kodwa hhayi kuleyo nhlangano ethile elimazayo. Siphakamise ukwakheka okushintshiwe okunokulawula okuqinile kukhabhoni kanye nomjikelezo ohlukile wokucubungula okushisayo ngemuva kokusakazwa. Umphumela ubungelona igama lengxubevange elehlukile, inguqulo engcono nje yokuthi yini Co 20 kungaba ngabo. Leyo ngxenye isasebenza, ngiyatshelwa.
Ukusuka ku-Melt kuya kumshini: Inqubo ingumkhiqizo
Awukwazi ukukhuluma ngalezi zinto ngaphandle kokungcolisa izandla zakho ngenqubo. Izici ze-cobalt-chromium alloy zincane mayelana nekhemistri yegama oqala ngayo nokuningi mayelana nendlela oyiqinisa ngayo futhi uyiphathe ngemva kwalokho. Yilapho indlela yethu edidiyelwe itholakala khona QSY izindaba. Ukulawula uhambo ukusuka ekubunjweni kwegobolondo ukuya ekwenzeni imishini ye-CNC yokugcina ngaphansi kophahla olulodwa akukhona nje ukusebenza kahle; imayelana nokulandeleka kanye nokuvimbela ukungcoliswa noma ukulahleka kwempahla ezindaweni ezikhishwayo.
Ekusakazeni utshalomali, izinga lokushisa lokuthela kanye nezinga lokupholisa a Co 20-uhlobo lwe-alloy lubalulekile ekunciphiseni i-micro-porosity nokulawula ukwakheka kokusanhlamvu. Ngokushesha kakhulu, futhi ubeka engcupheni yokucindezeleka; kancane kakhulu, futhi izigaba ze-carbide zingaba zimbi kakhulu futhi zibe brittle. Sifake izinkulungwane zokuthululwa, futhi incwadi yokubhalela (manje eyisizindalwazi) igcwele izinguquko ezincane—ukushintsha kwe-15-degree Celsius ekushiseni okuphezulu, ushintsho ekushiseni kwangaphambi kwesikhunta—okuxazulule izinkinga ezithile njengokuklebhuka okushisayo kwejometri ethile ye-flange. Lokhu akuzona izinto zezincwadi; ulwazi lwezizwe olwakhiwe ngabalingisi abahlulekile kanye nabaphumelele.
Bese kufika imishini. Abantu ababukeli phansi ukuthi lezi zingxubevange zinzima kangakanani ukusika. Basebenza kanzima ngokuphazima kweso. Ithuluzi elibuthuntu kancane noma izinga lokuphakelayo elinolaka aligcini nje ngokuligqokisa ithuluzi; ishintsha ubuqotho obungaphezulu bengxenye, idale isendlalelo esiqinile, esiphukayo esingaqalisa imifantu enkonzweni. Sifunde lokhu kabuhlungu kusenesikhathi, sikhipha inqwaba yokulingisa kwenani eliphezulu ngoba izindawo eziphendukile zibonise imifantu emincane ngaphansi kokuhlolwa kokungena kodayi. Isixazululo kwakuwuhlobo lwamathuluzi e-carbide acijile, ambozekile, okokupholisa umfutho ophezulu ncamashi onqenqemeni lokusika, kanye nemingcele elandelanayo, engaguquki. Ihamba kancane, kodwa iyona ndlela kuphela yokuletha ingxenye esebenza njengoba i-alloy ihloselwe ukuyenza. I QSY Iwebhusayithi ikhuluma ngamakhono ethu e-CNC, kodwa inani langempela lisebenzisa lokho kunemba kulezi zinto ezaziwa ngokuba nzima.
I-Alloying Nuances: Ngaphezu Kwe-Cobalt Nje
Ukuhlala esisekelweni se-cobalt kuphela kuyiphutha. Umlingo—nobunjiniyela—kukwelinye ibhokisi. I-Nickel ivame ukuba khona ukuze kuqiniswe isixazululo esiqinile kanye nokuzinzisa isakhiwo se-austenitic. I-Chromium, njengoba kushiwo, ingeye-passive oxide layer ehlinzeka ukumelana nokugqwala. Kodwa-ke ungena kokuqukethwe kwekhabhoni, okwenza lawo ma-carbides aqinile. Ikhabhoni encane kakhulu, nokumelana nokugqoka kuyahlupheka; kakhulu, futhi ubeka engcupheni i-ductility ne-machinability. I-Molybdenum ne-tungsten yengezwa ukuze kuqiniswe isisombululo esiqinile, kukhuphule izinga lokushisa eliphezulu.
Sasebenza kumkhono we-pump shaft ukuze sifake i-geothermal lapho imvelo yayine-chloride ephezulu kanye nezinga lokushisa eliphezulu. Indinganiso Co 20 ukwakhiwa bekungasebenzi kahle. Ukulungiswa kwakuhilela ukulungisa ibhalansi ye-molybdenum ne-tungsten ukuze kuthuthukiswe ukuzinza kwefilimu ye-oxide evikelayo ngaphansi kokuhamba ngebhayisikili eshisayo, kanye nokunciphisa kancane ikhabhoni ukuze kuthuthukiswe ukumelana nokushaqeka okushisayo. Kwakuyibanga le-bespoke, kodwa laphuma kulowo mgogodla Co 20 isihlahla somndeni. Lokhu kujwayelekile, hhayi okuhlukile, kwezicelo ezifunayo.
Ukukhetha okuhlukile okulungile kuvame ukwehlela kumodi yokuqala yokwehlisa isithunzi. Ingabe i-abrasion emsulwa? Ukuhluka okuphezulu kwekhabhoni kungaba ngcono kakhulu. Ingabe ukugqwala okunomthelela wezikhawu? Bese ukuqina nokumelana nokugqwala kuthatha kuqala, kukhomba ikhabhoni ephansi, inguqulo ephakeme ye-nickel/chromium. Ukuba nomlingani onjengaye QSY, enolwazi olujulile kukho kokubili ukusakaza nokwenza lezi zinhlobonhlobo, ibalulekile ngoba ukwakheka kushintsha ngokulungiswa ngakunye. I-alloy esakaza kahle ingase ibe yiphupho elibi emshinini, futhi ngokuphambene nalokho.
Ukwehluleka Njengothisha: Lapho I-Co 20 Akwanele
Akuzona zonke izindaba ezinempumelelo ehlanzekile. Ekuqaleni kwesikhathi sami lapha, saba nenqwaba yezigxivizo ze-blade turbine blade ezibuyisiwe. Acaciswe njengengxubevange evamile ye-cobalt-chromium, esiyicubungule njengezinga lethu Co 20- uhlobo ncibilika. Baphumelele zonke izivivinyo ezijwayelekile zemishini namakhemikhali. Kodwa enkonzweni, bakhubaza ngaphansi komthwalo ngaphambi kwalokho obekulindelwe. Ukuhlaziywa kokuhlolwa kwesidumbu kwembula inkinga: kuyilapho ikhemistri eyinqwaba yayilungile, sasigeje imfuneko yeklayenti engashiwongo (futhi engadwetshiwe) yamandla amancane okuqhekeka okunyakazayo ezingeni lokushisa elithile. Ukwelashwa kwethu okujwayelekile kokushisa, okwanele okungu-90% wezinhlelo zokusebenza, akuzange kuthuthukise i-carbide morphology edingekayo kuleyo majini eyengeziwe.
Leso kwakuyisifundo esibalulekile. Manje, ukuhlangabezana ne-spec akusona isiphetho sengxoxo. Siphenya indawo yokusebenza: izinga lokushisa eliqhubekayo lokusebenza, imijikelezo eshisayo, uhlobo lokulayisha, izinto zokukhwelana. Ishidi elicacisiwe le Co 20 iyisiqalo sengxoxo yezobuchwepheshe, hhayi umugqa wokugcina. Sakhe umtapo wolwazi omncane wama-microstructures anezimpawu ezivela emizileni ehlukene yokucubungula, ngakho manje singavama ukukhombisa amakhasimende, Yilokhu okuthola ngomzila A, futhi lokhu ukuthuthukiswa kwamandla omngcele wokusanhlamvu ngoMzila B. Kwenza ingxoxo ibambeke.
Omunye umgodi ovamile ukucabanga ukuthi lezi zinhlayiya azikwazi ukungena. Ziyakwazi ukumelana nokugqwala, kodwa azivikeleki. Sibone isimo sokugqwala kwengcindezi siqhekeka engxenyeni eyenziwe ngomshini omuhle embonini yamakhemikhali. Icala kwaba ukulandelela ama-sulphur compounds emfudlaneni wenqubo, lawo ma-alloys angazwela kuwo. Isixazululo bekungeyona ingxubevange ehlukile, kodwa ukuguqulwa kwedizayini yokunciphisa ukugxila kwengcindezi kanye nokwelashwa okuncane kwendawo. Kugcizelele ukuthi ukukhethwa kwezinto kuyinkinga yesistimu.
I-Real-World Application Tapestry
Pho konke lokhu kuhlangana kuphi? Bheka noma iyiphi imboni ephusha izinto ezisetshenziswayo emikhawulweni yazo. Kuwoyela negesi, izingxenye zayo zethuluzi le-downhole nezihlalo zamavalvu zibheke igesi emuncu. Ekucutshungulweni kokudla, izingxenye ezigugileyo okufanele zimelane nokubola okuvela emikhiqizweni ene-asidi kanye nokuvala inzalo kaningi. Ekwenziweni kukagesi, ifaka izindandatho nama-seal kumaphampu aphatha ama-slurries e-fly ash abrasive. Esimweni ngasinye, i-Co 20 iyithikithi lokungena, kodwa ipasipoti yokugcina igxivizwe ngeshumi nambili, izinguquko ezibalulekile.
Inani lomkhiqizi alikho nje ekuncibilikeni nasekutheleleni ezingeni. Kusesahlulelweni esinqwabelene—ukwazi lapho ukuchezuka kancane kokuqukethwe kwensimbi (into evame ukushaywa indiva) kungase kuthinte ukuzinza kwezinga lokushisa eliphezulu kweklayenti elithile, noma indlela yokulungisa izifunzo zomshini ngemva kokwelashwa kokushisa kwesixazululo ukuze kugwenywe ukukhipha ama-carbides ngaphandle. Lona umsebenzi ongenabukhazikhazi, ogxile emininingwaneni ochaza ikhwalithi.
Ekupheleni kosuku, Co 20 ungumqali wengxoxo. Kubonisa isidingo sempahla ehlala kuleso sikhala esiyingqayizivele phakathi kwezinsimbi ezingagqwali nama-nickel superalloy—ngokuvamile enikeza ibhalansi engcono yokuqina kokugqwala ngentengo. Kodwa ukusebenza kwayo okuphumelelayo kuncike ekudluleleni phambili kwelebula. Kudinga ubambiswano nomphakeli oqondayo ukuthi inombolo iyisikhombi nje, futhi indawo yangempela okuyiwa kuyo iyingxenye esindayo futhi echumayo esihogweni ncamashi oyidinga kuso. Lolo uhambo esizibandakanya kulo nsuku zonke, sisuka esithandweni somlilo QSY ekuphumeni kwekhwalithi yokugcina ekhrethini lokuthumela.
