Xa usiva 'iinkampani zotyalo-mali kwi-aerospace', umfanekiso okhawulezileyo uhlala ucocekile, izibonelelo ezizisebenzelayo ezikhupha iiblayidi zeinjini yomoya ezigqibeleleyo. Yintsomi leyo. Eyona nyani imbi, igcwele izandla, kwaye izele kukuyekelela phakathi koyilo olufanelekileyo kunye nejometri eyenziweyo. Ayikokwenza nje imilo; imalunga nokwenza imilo esinda ekuhlolweni kwe-ultrasonic, imijikelo ye-thermal, kunye noxinzelelo olukhulu lomatshini, ibhetshi emva kwebhetshi. Uninzi lwabasaqalayo, kunye neenjineli ezithile, bazijongela phantsi inzululwazi yezinto eziphathekayo kunye nolawulo lwenkqubo olungcwatywe ngelo xesha 'lilahlekileyo'.
Umongo: Konke malunga neShell (kunye nokulinda)
Umlingo wokwenyani, kunye neyona ntloko inkulu, ngaphakathi i-aerospace investment casting ayisiyiyo iwax okanye intsimbi—liqokobhe leceramic. Ukufumana elo qokobhe elinamaleko amaninzi lilungile bubugcisa obuguqulwe njengenzululwazi. I-viscosity enodaka, ukuhanjiswa kobungakanani besanti yestucco, ukufuma kwemekobume yokomisa kunye nobushushu... into nganye eguquguqukayo itshintsha ukuchaneka kokugqibela komgangatho kunye nokugqiba komphezulu. Ndibone iiprojekthi zilibazisekile iiveki kuba indawo yegumbi leqokobhe ibingazinzanga, nto leyo ekhokelela kwiintanda ezincinci ezivele emva kokugalelwa kunye nokushukuma. Yinkqubo ecothayo; wakha iqokobhe, uyomisa, wakha omnye umaleko. Akukho ukungxama ngaphandle kokulahla ingqibelelo.
Apha kulapho iinkampani ezinenkqubo yelifa lemveli enzulu, njenge Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), yiba nomphetho obambekayo. Ukusebenza ngaphezulu kwamashumi amathathu eminyaka, babone yonke indlela yokusilela kweqokobhe. Loo nkumbulo yeziko kwiwebhusayithi yabo kwi tsngtaocnc.com ayikokuthengisa kuphela. Iguqulela ekwazini, umzekelo, indlela i-nickel-based alloy's shrinkage edibana ngayo kunye nokwandiswa kobushushu benkqubo yeqokobhe. Olu ayilolwazi lweencwadi; ifakwe kumashumi eminyaka yeerekhodi zebhetshi.
Ukukhethwa kwezinto ezichasayo kwigobolondo-i-silica edibeneyo, i-zircon, i-alumina-silicate-ilawulwa yi-alloy ephonsiweyo. Galela i-superalloy kwiqokobhe elingalunganga, kwaye ufumana ukuhlangana kweekhemikhali, ukungcoliseka komphezulu, kunye nenxalenye eyinkunkuma. Ngumdlalo ohambelanayo ofuna i-Foundry ukuba ibe ne-palette yezinto ezibanzi, apho i-QSY ikhankanya i-cobalt kunye ne-nickel-based alloys alloys. Awunako ukutsibela nje ekukhupheni ingxubevange entsha; ifuna inkqubo yeqokobhe iphinde ifaneleke, eyinkqubo eneendleko, ephindaphindwayo.
Ngaphaya kokuCasa: Umdaniso ongenakwahlulwa kunye noMatshini we-CNC
Nali inqaku elibalulekileyo elihlala liphoswa: akukho mboniso we-aerospace ngokwenene 'ubume bomnatha'. Yonke i-interface ebaluleke kakhulu-ubuso be-flange, imingxuma ye-bolt, indawo yokutywina-ifuna i-post-cast CNC machining. Eyona ilungileyo iinkampani zotyalo-mali lwe-aerospace hlanganisa obu buchule ngaphandle komthungo. Ukuphosa kufuneka kuyilwe kucingwe ngomatshini, kwaye isiseko kufuneka siqonde ukuba intsalela yoxinzelelo lokuphosa ichaphazela njani na ukugqwethwa komatshini.
Ndikhumbula iprojekthi yolwakhiwo lwezindlu zeinjini yomoya apho inxenye ye-as-cast yadlulayo kuhlolo, kodwa ngexesha lomatshini, icandelo elinodonga olucekethekileyo ligqwethekile ngokwaneleyo ukuba lichithwe. Ingxaki? Ulandelelwano lokususa isango kunye nesikhuphukeli lubangele uxinzelelo lwasekhaya. Isisombululo savela kwiqela le-machinery elisebenza kunye ne-Foundry metallurgists ukuyila ngokutsha inkqubo yokutya. Kungenxa yoko le nto inkampani efana ne-QSY iqaqambisa zombini utyalo mali kunye nomatshini we-CNC phantsi kophahla olulodwa kubalulekile. Ivala i-loop yengxelo phakathi koyilo lokuphosa kunye nenxalenye yokugqibela yomatshini, inciphisa kakhulu iindlela zokusilela.
Ukwenziwa komatshini we-cast superalloys lelinye irhamncwa. Bahlala beqinile, bebuhlungu, kwaye bathanda ukusebenza nzima. Ukusebenzisa indlela yesixhobo engalunganga okanye into yokupholisa kunokubangela iintanda ezincinci kumphezulu, ukuguqula ukuphoswa kwesandi esinesakhiwo sibe lityala. Umthengisi odibeneyo uyakuqonda oku ngokupheleleyo. Bayayazi indlela ezabo izinto zokugalela eziziphatha ngayo phantsi koomatshini babo.
IiNuances zeMathiriyeli: Ayizizo zonke iStainless Steel eziLinganayo
Ukudwelisa intsimbi engatyiwa njengesixhobo kuphantse kube kungenantsingiselo kwi-aerospace. Ngaba sithetha nge-17-4PH yamandla aphezulu? I-316L yokumelana nomhlwa? Okanye ibakala le-martensitic lobunikazi lecandelo elithile lesixhobo sokumisa? Nganye ineempawu zokunyibilika, ukugalelwa, kunye nobushushu obahlukeneyo. Uvavanyo lwangempela lwe-Foundry lukwii-alloys ezikhethekileyo: ezisekelwe kwi-nickel ezifana ne-Inconel 718 okanye i-713C, ezizii-staples ze-hot-section components.
Ukudlala oku ngumdlalo onzima kakhulu. Ziyabiza, zineefestile ezicutheneyo zokusetyenzwa (uluhlu lobushushu phakathi kwe-solidus kunye ne-liquidus luqinile), kwaye bafuna unyango oluchanekileyo lobushushu ukufezekisa imvula ye-gamma efunekayo. Nakuphi na ukutenxa kwinqanaba lokupholisa kunokuguqula iimpawu zomatshini. Ubuchule be-Foundry bungqinwa kukuhambelana kwayo nezi zinto ngaphaya kwamakhulu okugalela. Ukukhankanywa kwezi ngxubevange yinkampani efana ne-QSY kubonisa ngokuthe ngqo ukubandakanyeka kunye nezicelo ezifuna ngamandla, zihamba ngaphaya kwamalungu olwakhiwo lwegeneric.
Unyango lobushushu yinkqubo engaphantsi iyonke. Ayingomjikelo we-oveni nje; yimeko elawulwa ngononophelo (ihlala i-vacuum okanye i-argon) ukuthintela i-oxidation yomhlaba (i-scaling) kunye ne-decarburization. Ukufana kwesithando somlilo, iireyithi zokunyuka, ukucima umlilo-zonke zibalulekile. Ukuphathwa kakubi kobushushu kunokonakalisa indawo ephoswe ngokugqibeleleyo, kwaye iziphene zinokubonwa kuphela kuvavanyo lokudinwa.
Iphazili yokuSasa kunye nokutya: Apho ithiyori idibana khona nokuziqhelanisa
Isoftware yeCAD inokulinganisa ukuzaliswa komngundo kunye nokuqina, kodwa ilizwe lokwenyani lihlala lisongeza imibimbi. Ukuyila isango lokungena kunye nenkqubo yokunyuka (isondlo) ngowona mngeni ungundoqo wenjineli. Injongo kukufezekisa ukuqina kolwalathiso, apho inxalenye iqinisa kuqala, isondla ukusuka kwiindawo eziphakamileyo, ukuphepha i-shrinkage porosity. Ivakala ngokuthe ngqo, kodwa ngezinto ezintsonkothileyo, ezinodonga olucekethekileyo lwejometri ye-aerospace, liphupha elibi.
Ngokufuthi kufuneka ulalanise. Ukongeza izinyusi ezingaphezulu okanye ezinkulu kuphucula ukuvakala kodwa kwandisa isivuno sesinyithi (umlinganiselo wenxalenye yokugqibela yobunzima ukuya kwintsimbi epheleleyo egalelwe), nto leyo kwiisuperalloy ezibizayo ivuthuza uhlahlo lwabiwo-mali. Kwakhona kudala iindawo zoqhagamshelwano ezingakumbi zokususwa kamva, ezinokuchaphazela umphezulu. Ndikhe ndaphononongwa apho siye sadlula kwishumi elinesibini loyilo loyilo lokungena, sincama ubunzima obufanelekileyo bokuqinisekisa imfezeko yolwakhiwo. Iziphakamisi ngokwazo kufuneka ziyilelwe ukuba zihlale zinyibilikile ixesha elide kunenxalenye, ebandakanya izibalo zemodyuli (i-volume-to-surface-area ratio).
Esi sigwebo sobunjineli esisulungekileyo, esisetyenzisiweyo. Injineli elungileyo yesiseko inokujonga kwindawo enqamlezileyo kwaye ngokuqondayo yazi apho indawo eshushu iyakwenzeka kwaye apho i-porosity inokufihla khona. Esi sigwebo sakhiwe kwiminyaka yokusika iisampulu zesampulu (uvavanyo olutshabalalisayo) kunye nokuthelekisa ulwakhiwo lwangaphakathi kuqikelelo lokulinganisa.
Umgangatho yi-Ecosystem, hayi iSebe
Ulawulo lomgangatho kwi i-aerospace investment casting ayilonyathelo lokugqibela lokuhlola; ilukiwe kwinqanaba ngalinye. Iqala nge-wax engenayo kunye ne-ceramic material certs. Emva koko yinkqubo yolawulo: ukujonga amaqondo obushushu etanki eludaka, ukulinganisa ubungqingqwa beqokobhe kwidiphu nganye, ukurekhoda amaqondo obushushu kunye namaxesha. Emva kokuphosa, ufudukela kwi-NDT (Uvavanyo olungonakalisiyo): ukuhlolwa kwe-fluorescent penetrant (FPI) yokuqhekeka komphezulu, i-radiography (i-X-ray) ye-voids yangaphakathi, kunye nokunyuka, ukuskena kwe-CT kwiipaseji eziyinkimbinkimbi zangaphakathi.
Inxalenye enzima kukulandeleka. Indawo nganye enye, ukusuka kwisibiyeli esincinci ukuya kwindawo enkulu yeinjini yomoya, kufuneka ilandelelwe emva kwinani layo lobushushu elinyibilikayo, iqokobhe lokwakha iqokobhe, indawo yokugalela, kunye nebhetshi yonyango lobushushu. Oku kudala isixa esikhulu sedatha. Ukungaphumeleli kwintsimi kwiminyaka kamva kuthetha ukuba kufuneka ukwazi ukulandelela umva kwaye ubone ukuba amanye amalungu avela kwaloo mathiriyeli inye okanye inkqubo yebhetshi asemngciphekweni. Ukukwazi kwenkampani ukulawula le datha ngokuthembekileyo yinxalenye enkulu yokuthembeka kwayo.
Ekugqibeleni, uphawu lomboneleli okwaziyo ukwenza isampulu elungileyo ayenzi nje isampuli elungileyo. Inikezela ngomgangatho ongaguqukiyo, olandelekayo ngesantya semveliso esebenzayo, unyaka nonyaka. Imalunga nokuba neenkqubo kunye noqeqesho lokubamba i-drift kwipharamitha yenkqubo ngaphambi kokuba ivelise ibhetshi yezinto ezilahliweyo. Yiloo nto uyijonga ngokwenene xa uvavanya ezi nkampani-ubunzulu benkqubo emva kwenxalenye ekhazimlayo.
