Uma onjiniyela bezindiza bedinga ama-turbine blades abamba ukubekezelela okungu-±0.05 mm ku-1,200°C—noma izindlu zenozzle kaphethiloli eziphila amahora angu-30,000 ngaphandle kokusakazwa kwe-microcrack—abaqali ngengcaphuno ye-generic foundry. Aqala ngokuziphatha okubalulekile, umlando wokushisa, nokuzinza kohlangothi kuyo yonke imijikelezo yokwelashwa kokushisa. Kungakho imboni ye-investment casting aerospace ubambiswano aluvamile ukuphumelela kuma-specs ekhathalogi kuphela. Bancike ekuqeqesheni i-metallurgical, inqubo esobala, kanye nolwazi olusebenzayo ngama-alloys afana ne-AMS 5387 cobalt-chromium kanye nama-T800-grade superalloys—izinto ezimelana nomshini kodwa zifuna ukunemba okuseduze komumo.
Sibone amaphrojekthi amaningi ema ngeziqu ngenxa yokuthi i-casting house iphathe izingxenye ze-aerospace “njengomunye nje umsebenzi obekezelela kakhulu.” Indlu yepompo yeklayenti eyodwa ye-AMS 5387 yehlulekile ukuhlolwa kokudlidliza—hhayi kusuka kumaphutha edizayini, kodwa kusukela kusakhiwo sokusanhlamvu esingaguquki kuwo wonke amaqoqo. Imbangela? Umhlinzeki othole izingothi ze-cobalt-nickel ezingaphekiwe ngaphandle kwesitifiketi sezinga lenqwaba, wabe eseqa ukuqinisekiswa kwesisombululo. Kwa-QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., siphatha konke ukusakaza kwe-aerospace njengohlelo lwe-thermomechanical—hhayi nje ukuma kwensimbi. Isikhungo sethu esithobela i-ISO e-Qingdao sisebenza ngokusakazwa kokutshalwa kwezimali okugcwele umjikelezo: ukuhlanganiswa kwephethini ye-wax, ukwakha amagobolondo e-ceramic, ukucwiliswa kwe-waxing, ukudubula okulawulwa yi-vacuum, ukuthululwa okunembayo ngaphansi kwe-argon, kanye nokwelashwa kokushisa kwangemuva kokusakazwa ngokugawulwa kwe-thermocouple ngesikhathi sangempela. Asikho isinyathelo esikhishwe ngaphandle. Ayikho into ephathekayo elahlekelwa ukulandeleka.
Yini ehlukanisa umsebenzi wokutshala imali okwazi ukusebenzisa i-aerospace kusukela kwenhloso evamile akuyona nje into esetshenziswayo—indlela ukusakaza okuhlanganisana ngayo nezinqubo ezansi nomfula. Sifaka u-72% wokulingisa kwe-aerospace yethu endlini sisebenzisa izikhungo ze-CNC ze-5-axis ezilinganiswa nsuku zonke ukuze zibe yi-ISO 10360-2. Kungani lokho kubalulekile? Ngoba umzimba wevalve ye-cobalt alloy ophonswe ku-±0.3 mm awukwazi ukufinyelela ukubekezelela kwe-ID yokugcina okungu-±0.025 mm ngaphandle kwalapho umshini womshini ubhekisela endaweni efanayo yedatha esungulwe ngesikhathi sokuhlanganisa isikhunta segobolondo. Onjiniyela bethu badizayina ngokuhlanganyela amasango okusakaza nezikhuphukeli *becabanga* ngokulandelana komshini wokugcina—hhayi ngemva kwalokho. Isibonelo, lapho sikhiqiza izindlu zesilinda sephampu ye-piston yezinhlelo zokusebenzisa amandla kagesi, sibeka izifunzo ukuze sinciphise ingcindezi esele ezindongeni ezibhorekile, bese sishintsha ama-spline angaphakathi sisebenzisa amathuluzi e-carbide enziwe ngokwezifiso afana nephrofayili yobulukhuni bendawo esakazwayo. Lokho kuhlanganiswa kunciphisa izinsalela ngo-41% ekwakhiweni kwe-athikili yokuqala uma kuqhathaniswa nezitolo lapho ukulingisa kanye nokwenza imishini kusebenza njengeminyango efakwe usilika.
Abanye bangase baphikise ngokuthi ukukhishwa kwesihlabathi kunikeza ukuguqulwa okusheshayo kwezakhiwo ezinkulu ze-aerospace. Kepha kumajiyometri anezindonga ezincanyana, eziyinkimbinkimbi-njengezingxenye zendwangu ye-turbine noma amalayini egumbi elivuthayo-ukutshala imali kuhlala kungenakushintshwa. Isikhunta sesihlabathi silwa nokuqina kodonga ngaphansi kwe-4 mm; amagobolondo e-ceramic aphatha u-1.8 mm ngokungaguquki. Okubaluleke nakakhulu, ukukhishwa kwesihlabathi kwethula izingozi zokufakwa kwe-silica ezibeka engozini impilo yokukhathala ezingxenyeni ezijikelezayo. Siqinisekisa yonke inqwaba yegobolondo le-aerospace nge-X-ray tomography—hhayi nje i-radiography—futhi senqaba noma iyiphi imbobo eyeqa i-ASTM E192-22 Level 2 porosity. Ngonyaka odlule, amakhasimende amabili asuka kubahlinzeki baseYurophu ngemva kokuthola amafilimu e-subsurface oxide avelayo emibhobolweni yawo ye-cobalt alloy. Inqubo yethu isebenzisa i-vacuum degassing pre-pour kanye namazinga okupholisa alawulwayo angaphansi kuka-100°C/ihora nge-gamma-prime solvus—awasuse ngokuphelele lawo mafilimu.
Abathengi be-Aerospace abadingi izingxenye nje. Badinga ubufakazi obulungele ukucwaningwa kwamabhuku: izitifiketi zezinto ezibonakalayo ezinokuhlaziywa okugcwele kokushisa kwamakhemikhali, imibiko ye-CMM eboshelwe kuma-callouts e-GD&T emidwebeni ye-ASME Y14.5, izingodo zokwelashwa kokushisa ezigxivizwe ochwepheshe bensimbi abaqinisekisiwe, namarekhodi okuhlola angakonakali alandeleka ku-NADCAP AC7108 Rev. isimo sokuhlola, landa imibiko eqinisekisiwe, futhi ulandelele ukuchezuka kobukhulu ngokumelene namashadi okulawula e-SPC. Ngokwakhiwa kwe-prototype okuphuthumayo, sicindezela umjikelezo kusukela ekukhishweni komdwebo kuye ekulethweni kwe-athikili yokuqala kuya ezinsukwini zokusebenza eziyi-14—ngaphandle kokweqa isikhathi sokumisa amagobolondo noma ukufinyeza ukubamba kwesisombululo. Leso sivinini sivela ekwakhiweni kokuhamba komsebenzi okuthambile, hhayi ezinyathelweni zenqubo ezonakalisiwe.
Uma ingxenye yakho elandelayo ye-aerospace idinga i-AMS 5387 cobalt alloy, i-geometry esekelwe ku-T800, noma ukusakazwa kwensimbi engagqwali okulinganiselwe ukucindezela okunezindawo zokusebenza ezidinga u-Ra ≤0.4 µm—siyazakhela ukuze zisebenze, hhayi nje ukudlula. Hhayi njengezinto ezingekho eshalofini, kodwa njengamasistimu akhiwe ngezinqubo eziphindaphindwayo, ezibhalwe phansi, kanye nezinqubo zokuziphendulela ngokwensimbi. Vakashela ku-https://www.tsingtaocnc.com ukuze ubuyekeze amakhono obuchwepheshe, ucele imibiko yokuhlolwa kwezinto ezibonakalayo, noma uhlele isibuyekezo sobunjiniyela nethimba lethu lokuhlanganisa le-casting-machining. Ukunemba ku-aerospace kuqala kudala ngaphambi kokuthululwa—futhi kuphela uma bonke ubukhulu, i-microstructure, nomsebenzi wangaphezulu uhlangabezana nenhloso ebalulekile yokundiza.
