Lapho abantu abaningi bezwa 'izingxenye ezimelana nokushisa okuphezulu', ngokushesha bacabanga ngebanga lezinto ezibonakalayo—Inconel 718, Hastelloy X, leyo nto. Lelo iphutha lokuqala, futhi elivame ukuba likhulu kakhulu. Ishidi lokucaciswa liwumugqa wokuqala nje. Inselele yangempela iqala lapho uthatha leyo alloy ephelele futhi kufanele uyiguqule ibe ingxenye esebenzayo engasindi nje ukushisa, kodwa ukuhamba ngebhayisikili okushisayo, i-oxidation, ingcindezi, futhi ngezinye izikhathi umoya ogqwalile, konke ngesikhathi esisodwa. Ngibone amaphrojekthi amaningi efa ngenxa yokuthi bekugxilwe kusitifiketi esibalulekile kuphela, hhayi kulo lonke uhambo olusuka ku-billet ukuya engxenyeni efakiwe.
I-Manufacturing Reality Check
Ake sikhulume ngokusakaza, ikakhulukazi amajiyometri ayinkimbinkimbi. Awukwazi ukuvele uthele noma iyiphi ingxubevange yezinga eliphezulu kunoma iyiphi isikhunta bese uthemba okungcono kakhulu. Ngama-alloys asekelwe ku-nickel, isibonelo, iphethini yokuqinisa yiyo yonke into. Uma uthola okungalungile, ugcina une-micro-shrinkage noma izinyembezi ezishisayo ezingase zidlule ukuhlolwa okubonakalayo kodwa zizohluleka ngokuphelele ngaphansi kokucindezeleka okushisayo enkonzweni. Lokhu sikufunde kabuhlungu eminyakeni edlule ngesibonelo sezindlu eziphehla ugesi. Izinto zaziphelele ephepheni, kodwa inqubo yokulingisa yethula amaphutha angaphakathi avele ngemva kwemijikelezo yokushisa engaba ngu-50 ekuhlolweni—isifundo esibizayo ekufinyeleleni inqubo, hhayi nje impahla.
Yilapho okuhlangenwe nakho kwe-Foundry kuba okungaxoxiswana khona. Inkampani efana I-Qingdao Qiangsenyuan Technology Co., Ltd.(QSY), ngeminyaka yabo engamashumi amathathu kugobolondo nokusakazwa kokutshalwa kwezimali, ukuqonda lokhu ngokuseduze. Iwebhusayithi yabo, tsngtaocnc.com, ibala umsebenzi wabo nge-cobalt ne-nickel-based alloys. Okubalulekile akukhona ukuthi bayayibhala; ukuthi kungenzeka ukuthi bathuthukise amasistimu wokugenca kanye nemingcele yokuthulula ukwenza lawo ma-alloys aziphathe kahle. Ngengxenye ekwazi ukumelana nezinga lokushisa eliphezulu, isakhiwo sokusanhlamvu se-as-cast umugqa wakho wokuqala wokuzivikela. Ukuthola lokho kudinga inhlanganisela yobuciko nesayensi oyithola kuphela ngokuphindaphindiwe, okuvame ukuba buhlungu, ukuzama namaphutha.
Bese kufika imishini. Ukwenza i-superalloy enezinga eliphezulu lokushisa kuyisilwane esihlukile ngokuphelele. Ayifani nensimbi. Lawa ma-alloys asebenza kanzima ngokushesha. Uma indlela yakho yamathuluzi, isivinini, noma okuphakelayo kuvaliwe, awugcini nje ngokuguga ithuluzi—ushintsha ubuqotho bengxenye, udala ungqimba lwezinto ezigcizelelwe, eziqhekeke kancane okuba indawo yokuqala yokwehluleka lapho kushisa. Ukukhetha okupholile kanye nengcindezi yohlelo lokusebenza kubaluleke kakhulu lapha ukuze ulawule ukushisa endaweni yokusika. Ibhalansi ethambile phakathi kokukhipha okubalulekile futhi ungalimazi i-substrate ozama ukuyigcina.
UDeveli Emininingwaneni Yesicelo
Ukuchaza 'izinga lokushisa eliphezulu' isinyathelo sokuqala esibalulekile. Ingabe i-800°C iyaqhubeka? Noma i-1100 ° C ngokuqhuma okufushane? Umehluko ubeka yonke into. Ngokushisa okuphezulu okuqhubekayo, ukumelana ne-oxidation kuvame ukuba yisici esikhawulelayo. Ungase udinge ukwelashwa okukhethekile kwendawo noma ucabangele umndeni ohlukile we-alloy. Kuzinhlelo zokusebenza ze-cyclic, njengamasistimu e-exhaust, ukukhathala okushisayo ngumbulali. Lapha, i-coefficient yendawo yokukhuliswa kwe-thermal namandla ayo okukhasa izinkanyezi zombukiso. Ingxenye enganyakazi kakhulu ngokushisa ingase iqhekeke ekwandeni kokucindezeleka.
Ngikhumbula ingxenye ye-valve yomugqa wokucubungula amakhemikhali. Izinto ezisetshenziswayo kwakuyizinga lokushisa eliphakeme elingenabala. Iphumelele zonke izivivinyo zokuqala ze-hot-pressure. Kodwa esitshalweni sangempela, sabona ukucisha ngokushesha ngenxa yokuphazamiseka kwenqubo—ukwethulwa koketshezi olupholile kungazelelwe. Lokho kushaqeka okushisayo kwadala imifantu yezinwele okungekho muntu owayeke wacabanga ukuzihlolela. Ukulungiswa bekungeyona ingxubevange yangaphandle, kodwa ukuklanywa kabusha kwejometri ethethelelayo kanye nokushintshela ebangeni elinokumelana nokushaqeka okungcono kakhulu kwe-thermal. Isimo sangempela sohlelo lokusebenza, hhayi esikahle emdwebeni, sinqume isisombululo.
Yingakho ukubambisana nomenzi kubalulekile. Uma uhlola, awugcini nje ngokuthenga ingxenye; uthenga ikhono labo lokuxazulula izinkinga. Udinga ukwazi ukuthi, Lokhu kuzobona imijikelezo esheshayo ukusuka ku-950°C ukuya ku-400°C endaweni enesulfure, futhi ubenze babuye neziphakamiso kukho kokubili impahla kanye nendlela yokukhiqiza. Ingabe inqubo yabo yokutshala imali ingafinyelela isiphetho esidingekayo ukuze kuncishiswe amasayithi okuqalisa ukuqhekeka? Ingabe ukucutshungulwa kwabo kwe-CNC kungaqinisekisa izingcindezi ezicindezelayo ezindaweni ezibucayi?
Ukukhetha Okubalulekile: Ibhalansi Ye-Pragmatic
Kukhona ukulandelana kwezinto ezisezingeni eliphezulu, namarokhethi abizayo akhuphuka ngamandla. Ngezinye izikhathi, i-single-crystal superalloy ehamba phambili kakhulu i-overkill. Insimbi eklanywe kahle enamashaneli okupholisa angaphakathi ingase ixazulule inkinga engu-700°C ngenani elincane lezindleko. Iqhinga ukwazi ukuthi imibundu ikuphi. Ezisetshenziswa eziningi zezimboni ku-700-1000°C, ama-alloys asekelwe ku-nickel njenge-Inconel 625 noma 718 angamahhashi okusebenza. Banikeza ibhalansi enhle yamandla, ukumelana ne-oxidation, nokwakheka.
Kodwa nangaphakathi kwalokho, unakho ukukhetha. Kwenziwe uma kuqhathaniswa nabalingisi? Kumajamo ayinkimbinkimbi, ukulingisa kuvame ukuba ukuphela kwendlela esebenzayo. Uchwepheshe ofana ne-QSY, ohlinzeka ngazo zombili ukutshala imali nokulandelayo CNC imishini, inikeza ukuqhubeka. Angakwazi ukukhiqiza umumo oseduze nenethi kungxubevange esebenza kahle kakhulu ngokusakaza abese emshinini wokubekwa uphawu okubalulekile noma izimbobo zamabholidi ngokunemba, okugcina ubuqotho bezinto ezibonakalayo kulo lonke iketango. Lokhu kulawula okuhlanganisiwe kuyinzuzo enkulu—ugwema ingcuphe yesitolo somshini ongenawo ulwazi lwama-superalloy alimaza ukulingisa okuhle kakhulu.
Esinye isici esivame ukunganakwa ukukhanda ama-weld. Ingabe ukulungiswa kuvunyelwe ekulingiseni? Kwezinye izingxenye ezibalulekile eziphendukayo, akunjalo. Ngengxenye yesakhiwo esimile esithandweni somlilo, mhlawumbe iyamukeleka. Lesi sinqumo sidinga ukwenziwa kusenesikhathi ne-Foundry, njengoba sithinta indlela abafaneleka ngayo ingxenye nokuthi yiziphi izindinganiso zokuhlola abazisebenzisayo. Kuwukucatshangelwa okusebenzayo, okuya phansi okunomthelela omkhulu ezindlekweni nesikhathi sokuhola.
Ukuhlola kanye namaphutha angabonakali
Ukulawulwa kwekhwalithi yezingxenye ezishisa kakhulu akukwazi ukuma ekuhlolweni kwe-dimensional. Ukuhlola ukungena kwedayi kujwayelekile uma kuneziphambeko. Kodwa ngobuqotho bangaphakathi, ikakhulukazi ezingxenyeni ezingaphansi kokucindezeleka okukhulu, ukuhlolwa kwe-radiographic (X-ray) ngokuvamile kubalulekile. Ibuyela kulelo phuzu lokuqala mayelana nenqubo yokulingisa. Uyaqinisekisa ukuthi indlela ye-Foundry ikhiqize ukwakheka kwangaphakathi okunomsindo. Lena akuyona indawo yokusika amakhona. Iphutha oliphuthelayo lapha ukwehluleka kwenkambu okulindelwe ukwenzeka, nakho konke ukungasebenzi kanye nemithelela yokuphepha eyilethwayo.
Ngezinye izikhathi, udinga ukuya phambili. Kuphrojekthi yakamuva ehilela ukuhlukahluka kwezinga lokushisa eliphezulu, asizange sicacise i-RT kuphela, kodwa futhi nokuhlolwa kwe-metallographic kumasampuli omhlatshelo athululwe ekushiseni okufanayo. Kwakudingeka sihlole usayizi wokusanhlamvu futhi sibheke noma yiziphi izigaba ezingathandeki okungenzeka zakhiwe ngesikhathi sokuqina. Yengeze isikhathi nezindleko, kodwa bekuwukuphela kwendlela yokuqiniseka ngohlelo lokusebenza olungenayo imajini yephutha. Abasunguli, uma benolwazi, kufanele bakuqonde lokhu futhi bakwazi ukwamukela noma baphakamise lezi zinyathelo.
Ekugcineni, cabangela isiphetho. Indawo emangelengele, efana ne-cast ingaba yindawo eshisayo yokukhipha i-oxidation kanye nokuqalwa kokuqhekeka. Ngokuvamile, ukuqhuma okulula kwe-glass-bead noma inqubo ethile yokukhetha ingathuthukisa kakhulu ukumelana ne-oxidation ebusweni ngokudala ungqimba olufana kakhulu, olukhulula ukucindezeleka. Kuyisinyathelo esincane, sokugcina esisebenzisa izici zemvelo zempahla ngempumelelo kakhulu.
Imicabango Ephethayo: Iwuhlelo, Ayiyona Ingxenye
Ngakho, ukudonsa konke lokhu emuva ndawonye. Ukuthola okuthembekile izinga lokushisa eliphezulu ukumelana nengxenye akulona nje i-oda lokuthenga. Ukusebenzisana kobuchwepheshe. Iqala ngezidingo zohlelo lokusebenza ezithembeke ngendlela enesihluku, idlulele ezintweni ezisetshenziswayo kanye nokukhetha kwenqubo (lapho izinkampani ezinekhono elijulile elididiyelwe njengokucwebezela kokusakaza nomshini), futhi kuqinisekiswa izinqubo zokuhlola ezihambisana nobungozi.
Umgomo uwukugcina unengxenye engagcini nje ngokusinda, kodwa esebenza ngokubikezela impilo yayo ehlosiwe. Lokho kuqagela kuvela kuzo zonke izixhumanisi kuchungechunge—kusuka esitolo sokuncibilikisa kuya kusitembu sekhwalithi yokugcina. Kuncane mayelana nokuthola okubalulekile komlingo nokuningi mayelana nokwenza uchungechunge lwemicimbi olufakazelwe, olulawulwayo ukuze lulolonge lokho okubalulekile kube into ongathembela kuyo ngempela lapho ukushisa kuba khona, ngokoqobo. Umehluko phakathi kwengxenye esebenzayo nehlulekayo ngokuvamile utholakala kule mininingwane efiphele, engathandeki yokukhiqiza nokuqinisekisa engalokothi ifinyelele ebhukwana elicwebezelayo.
