Iminyaka engaphezu kwengxenye yekhulu, i-Inconel 718 ibilokhu ibambe isikhundla sayo njengento ebaluleke kakhulu kuzo zonke izimboni ezifana ne-aerospace, uwoyela negesi, kanye nokuphehla ugesi. Le superalloy esekwe ku-nickel inenhlanganisela emangalisayo yezakhiwo ezivumela ukuthi isebenze ngokuthembekile lapho ezinye izinto zihluleka khona. Yini echaza ukuthandwa okungapheli kwe-Inconel 718 naphezu kokuvela kwama-alloys amasha? Izizathu zisekelwe emandleni ayo ayingqayizivele, irekhodi eliqinisekisiwe, kanye nezinqubo ezintsha eziqhubekayo eziqinisekisa ukuthi i-Inconel 718 ihlala iyingcweti eqinile.

Ukumelana Nezindawo Ezinhle Kakhulu

Ukuvelela kwe-Inconel 718 kukweleta okukhulu emandleni ayo okuchuma kuzilungiselelo ezidiliza ngokushesha amanye ama-alloys. Igcina amandla okuqina namandla okukhathala ngisho nangemva kokuchayeka isikhathi eside emazingeni okushisa ashisayo angaphezu kuka-1000°C. Lokhu kuqina kwe-thermal kusuka ekuqinisweni kwesisombululo esiqinile ngezinsimbi eziphikisayo njenge-niobium ne-molybdenum. Isendlalelo se-chromium esivikelayo esingaphezulu simelana nokulimala kwe-oxidation.

Ingxubevange ikhombisa ukumelana nokugqwala okuhle kakhulu lapho ibambana nezinto ezidala kakhulu kusuka ku-sulfuric acid kuya kumidiya ye-chloride. Imelana nezindawo ezihlanganisa ukushisa, i-corrosion agents, nezingcindezi zemishini ezicekela phansi ngokushesha insimbi engagqwali. I-Inconel 718 iphinde isebenze ngokwethembeka ngaphansi kwengcindezi ephezulu, ivumela ukusebenza okuqinile ngaphansi kwamanzi nasesikhaleni.

Lokhu kuguquguquka kuvumela i-Inconel 718 ibha eyindilinga ukubekezelela izimo ezimbi kakhulu ezibonakala ezinjinini zezindiza, ukumba ogwini, ezimbonini zenuzi, kanye nokungabi namvula kwendawo. Ukuqina kwayo ekubhekaneni nokweqisa kwemvelo okubangela ukuthi amanye ama-alloy abophe kuyaqhubeka kuzuza i-Inconel 718 isithunzi esihlonishwayo.

Ukuletha Ukusebenza Okuthembekile

Ngaphezu kokusinda, i-Inconel 718 iletha ukusebenza okungaguquki kwemishini abaklami abangathembela kukho. Ngenkathi inikeza ubulukhuni bokumelana nemithwalo esindayo, iphinde ibe ne-tensile ductility enhle evumela ukuguquguquka okuthile kunokuba ibe brittle. Le nhlanganisela yamandla kanye nokuqina kokuphuka ibaluleke kakhulu ekusingatheni izidingo ze-turbomachinery.

Ingxubevange ikhombisa ukumelana nokukhula kokuqhekeka okumangalisayo uma kuqhathaniswa namanye ama-nickel alloys, ikakhulukazi ngokwelashwa kokushisa ukuze kuthuthukiswe izakhiwo zokusanhlamvu. Lokhu kubekezelela umonakalo kunikeza i-Inconel 718 inzuzo ezinhlelweni ezibucayi zokukhathala. Izingxenye ezenziwe nge-alloy zivame ukuhluleka kancane kancane kunokuba zingalindelekile, okuvumela ukungenelela okuhleliwe.

Lapho abakhiqizi belandela izindlela zokucubungula ezifanele, i-Inconel 718 iletha izakhiwo ezilawulwayo nezibikezelwayo. Ukwakheka kwamakhemikhali alawulwa ngokuqinile, ukwelashwa kokushisa, nezilawuli zekhwalithi ngesikhathi sokuncibilika nokufoja, okuholela ekusebenzeni okuphindaphindayo. Lokhu kufaka ukuzethemba konjiniyela lapho basebenzisa i-Inconel 718 ngezindima ezibalulekile zemishini.

 Ukuthembeka Okuqinisekisiwe Kwenkundla

Isici esibalulekile esisekela amandla okuhlala e-Inconel 718 ukuthembeka kwayo okuqinisekisiwe kusukela kumlando wesevisi obanzi. Isibonelo, ingxubevange ibilokhu iyinsizakalo yezingxenye zenjini yendiza emashumini eminyaka esipiliyoni sokundiza. Imelana nokucindezeleka okukhulu kwe-centrifugal kumadiski azungeza ku-10,000 rpm ngenkathi imelana nokukhula kokuqhekeka.

I-Inconel 718 ihlanganisa ngaphezu kuka-40% wesisindo sezinjini zegesi ezisetshenziswa ezimbonini zikagesi ngenxa yezinga lokushisa kanye nokumelana ne-oxidation. Isebenze ngokuthembekile ezintweni zokusebenza zokumba ogwini ezimelana nokuhlasela okuhlangene kokushisa, ukugqwala kwamanzi olwandle, nezingcindezi ezinamandla.

Lawo marekhodi ethrekhi anamandla ezinhlelweni zokusebenza ezibalulekile zenjongo aqinisekisa izimangalo zokusebenza kwe-Inconel 718. Onjiniyela bakhetha ingxubevange evamile enokwethenjelwa kwenkambu kunokuthi babeke ubungozi kwezinye izinto ezingaqinisekisiwe. Leli gama 'elizanyiwe neliyiqiniso' lisekela ukubusa kwe-Inconel 718 ngisho nama-alloys amasha atholakalayo.

Design Ukuvumelana nezimo

Isici esibalulekile ekusetshenzisweni okuhlala njalo kwe-Inconel 718 ububanzi obunikeza abaklami. Ngenkathi ihlangabezana nemibandela eyisisekelo yendawo, iletha lokhu kusebenza kuhlu olubanzi lokuqanjwa uma kuqhathaniswa. Lokhu kuvumela onjiniyela ukuthi balungise kahle izibaluli ezinjengokushisela, ukuhleleka, kanye nokusebenza kahle kohlelo lokusebenza olunikeziwe ngesikhathi sokukhiqiza.

Ingxubevange ingaphonswa kalula, igoqwe, ifojiwe, ikhishwe, futhi idonswe kumajiyometri ahlukahlukene ukusuka kushidi kuye kusitoko sebha. Ukusebenziseka kalula kwayo kwenza ukukhiqizwa ngokongayo kwezimo eziyinkimbinkimbi ezibalulekile ekusebenzeni. Izingxenye ezenziwe nge-Inconel 718 zingenziwa ngomshini ukuze zibe nobukhulu obunembile kusetshenziswa amathuluzi okusika avamile.

Lezi zinzuzo zokwenziwa zihlinzeka ngokuguquguquka ekuklameni izingxenye ezisebenza kahle kakhulu. Ukushisela kwe-Inconel 718 nakho kuvumela ukujoyina ama-sub-assemblies ezakhiweni ezinkulu ngokuzethemba. Ukuhlukahluka okunjalo kuqinisekisa ukuthi onjiniyela bayaqhubeka nokuthola izinhlelo zokusebenza ezintsha zale alloy ethembekile.

Ukuqamba Okuqhubekayo

Ifilosofi evamile ithi, 'uma ingaphukile, ungayilungisi.' Nokho, ukuqamba okusha okuqhubekayo kugcina i-Inconel 718 isebenza naphezu kweminyaka yayo. Intuthuko ekuncibilikeni kwe-vacuum kanye nokuphonsa ikhiqiza insimbi ehlanzeke kakhulu enokufakwa okuncishisiwe kanye nama-voids. Lokhu kuthuthukiswa kwe-metallurgical kuthuthukisa izakhiwo zemishini ze-Inconel 718 kanye nokuvumelana.

Ukwelashwa okusha kokushisa kusondela ekuguquleni ukwakheka kwesigaba ngendlela elawulwayo ukuze kuthuthukiswe izinga lokushisa eliphezulu, ukuguquguquka kwenotshi, nezinye izici ezibalulekile emigomeni yohlelo lokusebenza. Ukukhiqiza okungeziwe kunika amandla amajiyometri e-Inconel 718, okunweba imvilophu yokuklama.

Ukwelapha okungaphezulu okufana nokucindezela kwe-isostatic okushisayo kanye ne-laser peening zethula izingcindezi ezicindezelayo ezinenzuzo ezithuthukisa impilo yokukhathala. Empeleni, ukuqhubeka kwesayensi yezinto ezibonakalayo kuqinisekisa ukuthi i-Inconel 718 igcina ukuncintisana okuhlobene nama-alloys asafufusa.

Ukubophela Ubudala Ukuqina

Inqubo eyinhloko enikeza i-Inconel 718 izici zayo ezihlukile ukwelapha ukushisa okuqinisa iminyaka. Ukufakwa kwesixazululo kwenza ingxubevange ithambe futhi iphenduleke ukuze isebenze kalula ibe yimimo oyifunayo. Ukuqina kweminyaka bese kunikeza ubulukhuni namandla ngokukhiqiza amanzi amancane avimba ukugudluka kokushelela.

Ukuqina okuyinhloko kwe-gamma prime, enokwakheka kwe-Ni3Nb. Amafomu aphambili e-gamma ahambisanayo ngaphakathi kwesigaba se-matrix esinothe nge-nickel, okuvimbela ukunyakaza kokuphuma. Ukuqiniswa okwengeziwe kuvela ku-gamma double prime precipitates (Ni3Nb) emingceleni yokusanhlamvu.

Ochwepheshe be-Metallurgists balawula ngokucophelela izici ezifana nezinga lokushisa, isikhathi, namazinga okupholisa phakathi nokuguga ukuze bashune ukusatshalaliswa, umumo, kanye nengxenye yevolumu yalezi zinsalela. Lokhu nakho, kulungisa ibhalansi yamandla-ductility yohlelo lokusebenza. Amandla aphelele e-Inconel 718 ancike ekusebenziseni i-metallurgy yayo eyinkimbinkimbi ngokuqina kweminyaka.

Isizukulwane Esilandelayo Sezixazululo

Esikhundleni sokuyenza isiphelelwe yisikhathi, ama-alloys amasha afana no-René 65 kanye ne-Haynes 282 acija umkhawulo wokuncintisana we-Inconel 718 ngezidingo zakusasa. Intuthuko efana nokukhiqiza okungeziwe ivula amathuba angakaze abonwe ngama-alloys akhona, nawo.

Kwabenzi benjini yejethi, i-Inconel 718 ihlinzeka ngesixazululo esivuthiwe, esinezimpawu ezinhle njengoba ama-alloy anamandla aphezulu efakazela. Izinkampani zikawoyela zingasebenzisa izingxenye ezifakazelwe ze-Inconel 718 eduze kwama-alloys amasha ukuvikela ubungozi. Ibhalansi yezakhiwo ye-Inconel 718 nobubanzi obubanzi bokusebenza iyenza ifanele izinhlelo zokusebenza eziningi.

Ama-alloys asebenza kahle kakhulu ngokuvamile asebenza ndawonye ukuze afinyelele ukusebenza kwesistimu okuqinile ngendlela ethengekayo. Izingxenye ezibona izimo ezimbi kakhulu zisebenzisa i-Inconel 718, kuyilapho izingxenye ezingagxilile kakhulu zisebenzisa ama-alloys ashibhile. I-Inconel 718 ikhombisa ukuthi i-stalwart endala isenokubaluleka eduze kwezinto ezintsha, hhayi nje ukuncintisana.

Isiphetho

Ngaphezu kweminyaka engama-50 selokhu yethulwa, i-Inconel 718 isalokhu iyingxubevange ethandwa kakhulu. Izizathu eziyinhloko zihlanganisa ukusebenza kwayo okuthembekile ezindaweni ezihlukahlukene ezidlulele, irekhodi elifakazelwe ekusetshenzisweni okubalulekile komgomo, ukuguquguquka kokuklama, kanye nokuqamba okusha okuqhubekayo. Izinto ezisetshenziswayo ezintsha zisiza ukwandisa amathuba kodwa i-Inconel 718 isalokhu ibalulekile ekubhekaneni nezinselele ngokwezomnotho ngesixazululo esiqinile, esithembekile. Uma kubhekwa izinzuzo zayo ezihlala njalo, lesi sihlabani se-alloy sizoqhubeka nokukhanya lapho kuphela abaqine kakhulu abangasinda khona.

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• Source: https://www.fintechnews.org/why-inconel-718-remains-a-popular-alloy/