Ama-alloys e-cobalt awagobi ukuze afune-bayakuchaza. Lapho amaphampu asebenza ngogesi esebenza kubha engu-400, lapho amavalvu e-downhole ebhekene no-250°C no-H₂S, noma lapho amawintshi e-winch emunca ukushaqeka okuphindaphindiwe ezimotweni zobunjiniyela bezinga le-Arctic, ukukhathala kwezinto ezijwayelekile. Ukwehluleka akwenzeki kancane kancane; ziyazuma, ziyabiza, futhi zibalulekile kuthumo. Sibone izindlu ezintathu zephampu ye-cobalt ye-cobalt ye-AMS 5387 ziqhekeka phakathi namahora okusebenza angu-800—hhayi kusukela ekushiyekeni kwedizayini, kodwa kusukela ekuphathweni kokushisa okungahambisani kunqwaba yokusakazwa. Yingakho "ingxenye ye-cobalt alloy engu-6" akuyona nje igama lokusesha. Ukucaciswa onjiniyela abasebenzisa i-shorthand uma ukuzinza kwe-dimensional, ukufana kwe-microstructural, nokumelana nokugqokwa kungakwazi ukonakala.
Kungani Izingxenye Eziyisithupha—Hhayi Eyodwa, Hhayi Eyishumi—Izingxenye Ze-Cobalt Alloy Ziletha Ukwethembeka Kwangempela Komhlaba
Ithimba lethu lenze ngomshini, lahlola, futhi laqinisekisa izinto ezingaphezu kuka-17,000 ze-cobalt-nickel kusukela ngo-2018—ikakhulukazi i-AMS 5387 ne-T800 amamaki—kumakhasimende asezindaweni zikawoyela, ama-hydraulics olwandle, nezinsimbi zokuhlola ezinengcindezi ephezulu. Asifikanga ekucushweni okuyisisekelo okuyisithupha ngephutha. Ngayinye ixazulula imodi yokwehluleka ehlukile esiyibonile ezinkulungwaneni zemibiko yesevisi, ukuhlaziywa kwembangela, kanye nezifundo ze-dimensional drift. Lezi akuzona izixazululo zetiyori. Benza lukhuni ukuhamba ngebhayisikili, ukuhlola ukushaqeka okushisayo, kanye nokuchayeka kokugqwala komhlaba wangempela endaweni yegesi emuncu.
- I-cobalt alloy nozzles - Idizayinelwe umjovo we-slurry abrasive kuma-fracturing manifolds. Izinguqulo ezijwayelekile ezingenasici ziguguleke ngokushesha okungu-3.2× ekuhlolweni kokuhuzuka elebhu (ASTM G65). Imibhobho yethu ye-T800 igcine ukubekezelela okungu-±0.015 mm ngemva kwemijikelezo engu-12,000 ku-15 m/s yesivinini sokugeleza.
- I-Cobalt alloy plugs - Isetshenziswa njengokufakwa kwe-blind flange kuma-pods okulawula ulwandle. Kushintshwe i-Inconel 718 lapho amakhasimende ebika ukugadla ngesikhathi se-torque-up at -1°C amazinga okushisa olwandle. I-coefficient ephansi yokungqubuzana kwe-Cobalt yehlise i-torque yokufaka ngo-41% ngaphandle kokudela ubuqotho bokuvalwa.
- AMS 5387 cobalt ingxubevange 6 izingxenye futha — Isixazululo sezinga lesistimu: isilinda, ipuleti levalvu, isilipha, i-swashplate bushing, i-port plate, neringi yokugcinwa—konke kuvela ekushiseni okukodwa okuqinisekisiwe. Iqeda ukunwebeka okushisayo okuhlukile phakathi kwezindawo zokukhwelana. Idatha yenkundla ibonisa isikhathi esimaphakathi esingu-2.8× eside phakathi kokulungiswa kuqhathaniswa nokuhlanganisa okuxubile okubalulekile.
- Izindlu zesilinda sephampu yePiston - Hhayi nje izindonga eziwugqinsi. Lokhu kuhlanganisa iziteshi zokupholisa ezenziwe ngomshini ngokunemba kanye nama-flange akhuphukayo akhulula ukucindezeleka. Sibambe ukubekezelelana kwe-GD&T kuqine kune-ISO 2768-mK ekugxileni kwe-bore (≤0.008 mm ngaphezu kobude obungu-320 mm) ngoba ukungaboni ngaso linye kushayela ngokuqondile ukugqokwa kwezicathulo ze-piston.
- Ama-valve okucindezela anezihlalo ezihlanganisiwe ze-cobalt — Ukuqina kwesihlalo ≥45 HRC, ubulukhuni obuphezulu obungu-Ra ≤0.4 µm, kanye ne-zero porosity kuqinisekiswe nge-micro-CT scanning. Inqaba u-98.3% wamabhilidi angenayo angenayo ahluleka ukuhlolwa nge-ultrasonic—awekho amathuba esibili lapho kuvalwa i-hydrogen kubha engu-700.
- Amarola e-shaft ephakathi kwewintshi engaphakathi — I-Carburized T800 enekesi ukujula okungu-1.2–1.5 mm, ukuqina okuyinhloko >85 J at -40°C. Isinda ekubuyiselweni kwemithwalo engu-15,000+ ekuhlolweni okusheshisiwe kwesifutho sikasawoti lapho i-42CrMo4 yehlulekile ngomjikelezo ongu-3,200.
Ukuvumelana Kwezinto Ezibalulekile Akuxoxiswana Nansi Indlela Esikuqinisekisa Ngayo
Abanye abahlinzeki baphatha i-cobalt alloy "njengenye nje insimbi engavamile." Siyiphatha njengesistimu ye-metallurgical. I-AMS 5387 ayichazwa yikhemistri yodwa—idinga ukulawula okuqinile ekusatshalalisweni kosayizi wokusanhlamvu, i-carbide morphology, kanye nesalela yesimo sokucindezeleka ngemva komshini. Sithola kuphela ezigayweni ezinokulandeleka kwe-ladle egcwele futhi sidinga imibiko yokuhlolwa komshini kukho konke okuthunyelwayo. Ukushisa ngakunye kuthola ukuqinisekiswa kwe-spectrographic, ukuhlolwa okuqinile nge-ASTM E8 ngayinye, nokubuyekezwa kwe-metallographic ngaphambi kokuqala kokusakazwa. Uma iqoqo le-carbide lidlula ingxenye engu-5% yendawo ku-as-cast microstructure, sichitha yonke inkatho-ngisho noma ikhemistri idlula. Ngoba ukuqhekeka emsebenzini kuqala lapho, hhayi emhlanganweni wokugcina.
Ukucupha Akukona Nje Ukusika-Kulawula Ukushisa Nokudlidliza
Ama-alloys e-cobalt asusa ku-1/5 izinga le-316 yensimbi engagqwali. Kodwa inselele yangempela akusona isivinini—ukuphatha ukushisa. Ku-300 ° C, amandla okukhiqiza i-cobalt ehla ngo-12% kuphela. Lokho kusho ukuthi amathuluzi okusika ahlala elayishiwe isikhathi eside, akhiqiza ukushisa okwengeziwe, okuthambisa ucezu lokusebenza endaweni futhi kusheshise ukuguga kwamathuluzi. Sisebenzisa i-cryogenic nitrogen cooling—hhayi inkungu—lapho siqeda ukujika izihlalo zamavalvu. Impilo yamathuluzi ithuthukisa i-3.7 ×. Ubuqotho bobuso buyathuthuka: akukho ukwakheka kongqimba olumhlophe, awekho ama-microcracks angaphansi komhlaba atholwe nge-FIB-SEM. Yonke indawo ebalulekile ithola ukuqinisekiswa kwe-CMM *ngaphambi* kanye *ngemuva* kokwelashwa kokushisa, ngoba ukuhlanekezela akubikezeleki—kuyalinganiseka. Futhi siyayibhala.
Ingxenye Yakho Elandelayo Ye-Cobalt Alloy engu-6 Iqala Ngokubuyekezwa Komdwebo—Hhayi Ingcaphuno
Asikhiphi ama-RFQ ezingxenyeni ze-cobalt. Siqala ngokutolika kwe-GD&T. Simaka ukukhuphuka kwengcindezi okungaba khona ekuguqukeni kwe-fillet. Siphakamisa ukushintshwa kwejiyomethri okuncane—njengokushintsha indawo ye-chamfer ngo-0.3 mm—okunciphisa isikhathi somshini ngo-22% ngaphandle kokuthikameze umsebenzi. Siqinisekisa ukugeleza kwezinto ezibonakalayo ekulingiseni utshalomali sisebenzisa ukulingisa kokuqinisa, hhayi ukuqagela. Lokhu akukona okungaphezulu. Kuwukuvikela ingozi. Amaklayenti eqa lesi sinyathelo isilinganiso sama-oda okushintsha ubunjiniyela angu-3.4 ngephrojekthi ngayinye. Labo abahlanganyela nezingxenye ze-athikili yokuqala yomkhumbi kusenesikhathi ngezinsuku eziyi-14, hhayi ezingama-38.
Uma ucacisa ingxenye engu-6 ye-cobalt alloy-noma uhlola eyodwa-uxazulula impilo ende ngaphansi kokweqisa. Hhayi lula. Hhayi izindleko zodwa. Hhayi isikhathi sokuhola uwedwa. Udinga ukwethembeka kohlangothi ezingeni lokushisa, ukumelana nokugqwala kumidiya enamandla, nokuqagela kwesakhiwo ngemva kwezinkulungwane zemijikelezo. Yilapho isipiliyoni sihlangana khona nokubulawa. Kungakho onjiniyela becacisa i-cobalt-futhi kungani bethemba inqubo ngemuva kwayo.
