Ukuba ucela umntu ukuba achaze utyalo-mali, uya kuhlala ufumana umgca wencwadi yesikhokelo: yinkqubo yokuphosa echanekileyo usebenzisa iqokobhe leceramic. Akuphosakalanga oko, kodwa kufana nokuchaza imoto njengesithuthi esinamavili amane—ayiboni yonke into ebangela ukuba iphawule. Ehlabathini lokwenyani, ngakumbi emva kwamashumi amathathu eminyaka kulo mdlalo, inkcazo ikwinkcukacha, ukulungelelana, kunye nokusombulula iingxaki ezifunekayo. Ayikokwenza nje iimilo ezintsonkothileyo; imalunga nokulawula isiphithiphithi sokwandiswa kwe-thermal, amaphupha amabi woyilo lokungena, kunye nedabi lanaphakade elichasene neziphene zomhlaba. Abaninzi bacinga ukuba yeyamalungu anqabileyo we-aerospace, kodwa leyo yingcamango ephosakeleyo eqhelekileyo. Ndiyibonile isetyenziselwa yonke into ukusuka kwi-pump impeller elula ukuya kwi-implant yonyango apho i-pore enye inokuthetha ukusilela.
Undoqo weNkqubo: I-wax, i-Shell, iGalela
Masiqale ngeziseko njengoko zisenzeka phantsi. Intliziyo yokuphosa utyalo-mali yipatheni yewax. Kuvakala kulula, kodwa umxube we-wax ngokwawo yinzululwazi yobunini. Ithambile kakhulu, kwaye ikhubaza ngexesha lokuphatha; i-brittle kakhulu, kwaye iyaqhekeka xa uzama ukudibanisa umthi onzima. Kwivenkile yethu, sichithe iminyaka silungisa le nto. Ufaka i-wax kwi-aluminiyam-ehlala isenziwa ngokusebenzisa i-CNC machining ngokuchanekileyo-ukudala i-replica yecandelo lokugqibela. Emva koko, udibanisa ezi patheni ngesandla okanye ngerobhothi kwi-wax sprue ephakathi ukwenza umthi. Eli nyathelo libaluleke ngobuqhetseba. I-engile kunye noyilo lwesiphambuka apha luyalela ukuhamba kwentsimbi kamva. Yifumane ingalunganga, kwaye uya kuba nesiphithiphithi esitsala ukubandakanywa kwi-casting okanye ukudala izivalo ezibandayo.
Inqanaba elilandelayo lokwakha iqokobhe leceramic. Kulapho igama elithi utyalo-mali livela khona-utyala ipateni ngezinto eziphikisayo. Yinkqubo ye-dip-and-dunk: okokuqala i-zirconia entle okanye i-alumina slurry, emva koko isituko esirhabaxa sesilica edityanisiweyo okanye imullite. Uphinda oku amaxesha ama-6 ukuya kwe-9, uyomisa phakathi kweedyasi. Ubuchule abukho nje kuphindaphindo; kukugweba i-viscosity enodaka imihla ngemihla. Ukufuma kuyayichaphazela. Iqondo lobushushu liyayichaphazela. Ukuba idyasi ephambili incinci kakhulu, ukungena kwesinyithi kuwonakalisa ukugqiba komhlaba. Ingqindilili kakhulu, kwaye inokubamba iigesi okanye iqhekeke ngexesha lokukhupha iwaxing. Ndikhumbula ibhetshi yeminye imizimba yevalvu yentsimbi engatyiwayo apho sasileqisa ukomisa. Iqokobhe lalibonakala ligqibelele, kodwa ngexesha le-autoclave dewax, umphunga wawungakwazi ukubaleka ngokukhawuleza ngokwaneleyo kwidyasi eshinyeneyo yangaphakathi. Amaqokobhe aqhuma ngenxa yoxinzelelo lwangaphakathi. Ilahleko iyonke. Leyo yinyani-inkcazo ibandakanya la manqaku angaphumeleli.
Emva kokukhutshwa kwe-dewaxing kunye nokudubula, ushiywe ngumbumba ongenanto, owenziwe ngaphambili we-ceramic. Ukugalela bubugcisa bako. Kwimathiriyeli efana ne-nickel-based alloys okanye i-cobalt-based alloys, esisebenza rhoqo, ujongene namaqondo obushushu agqithisileyo kunye nokuqina ngokukhawuleza. Awugaleli nje; kufuneka ulawule ukuthambeka kwe-thermal. Galela ngokucotha kakhulu, kwaye intsimbi iyagodola ngaphambi kokuba ugcwalise amacandelo amancinci. Galela ngokukhawuleza kakhulu, kwaye ukhukulise i-ceramic ethambileyo yangaphakathi, uzisa iziphene ezinjengesanti. Ukungunda kusekho malunga ne-1000 ° C xa isinyithi esityhidiweyo siyibetha. Oko kutshatyalaliswa kwe-thermal lixesha elichazayo-ngokoqobo. Ukugalela okuyimpumelelo kuphumela kwindawo ekufutshane-netha-imilo, kodwa inkcazo yempumelelo inomda owaneleyo kuyilo lokuvumela umatshini olandelayo we-CNC ukubetha ukunyamezelana okuqinileyo.
Apho Inkcazo Iba Yinyani: Imingeni yezinto eziphathekayo
Thetha naliphi na igqala elisisiseko, kwaye baya kukuxelela ukuba ukuchaza ngokwenyani ukuphosa utyalo-mali, kufuneka uthethe ngezixhobo. Asiyonkqubo yobukhulu obunye. Ukhetho lwealloyi luyalela yonke iparameter ukuya phezulu. Thatha i-17-4 PH insimbi engenasici. Lihashe lomsebenzi eliqhelekileyo, kodwa linovakalelo kumazinga okupholisa. Ukuba ukupholisa iqokobhe alilawulwa, unokufumana izigaba ezingathandekiyo ezibulala iimpawu zomatshini. Emva koko unayo i-superalloys, i-nickel-based kunye ne-cobalt-based based. Ezi zezendalo ezingqongileyo ezigqithisileyo-ii-blades ze-injini, izixhobo zokukhupha. Inkcazo yabo yokuphosa inzima. Zineendawo eziphezulu zokunyibilika kwaye ziqhele ukwenza izigaba eziyingozi ze-topologically close-packed (TCP) ukuba ukuqina akulawulwanga ngononophelo.
Apha kulapho amava trumps ithiyori. Incwadi inokuthi sebenzisa ukugalela ngokukhawuleza kumacandelo amancinci. Kodwa nge-cobalt-based alloy, ukugalela ngokukhawuleza kunokukhokelela ekukrazuleni okutshisayo kuba i-alloy inoluhlu olude lokukhenkceza. Kufuneka ulungelelaniso lokugalela isantya kunye nobushushu be-mold preheat. Sifunde oku kwiprojekthi yomthengi wepetrochemical. Inxalenye yayiyigridi yenkxaso ye-catalyst eyinkimbinkimbi kwi-alloy ye-nickel-chromium. Imitsi yokuqala ibangele iinyembezi ezishushu kwi-webbing. Isisombululo sasingekho kwisango lokungena; ibikukuxhasa ukushisisa komngundo malunga ne-50°C ukwenza i-thermal gradient ethe kratya, ekhuthaza ukuqiniswa kwecala. Olo hlengahlengiso alukho kwinkcazo esisiseko, kodwa ngundoqo wobugcisa.
Kwaye masingayilibali imathiriyeli yeferrous njengekhabhoni kunye neentsimbi zealloy. Baxolela ngakumbi kwi-shrinkage kodwa banokuba nenkohlakalo kwiqokobhe. Ubushushu obuphezulu bunokubangela ukusabela kweqokobhe lesinyithi, okukhokelela kwindawo eqinileyo, isiphene seglasi esibizwa ngokuba yintsimbi yokungena. Ukulwa nale nto, ukuqulunqwa kwengubo ephambili ye-slurry ibaluleke kakhulu-ihlala ifuna izihlungi ezikhethekileyo zokucoca okanye izongezo. Yincoko ethe rhoqo phakathi kwenzululwazi yezinto eziphathekayo kunye nenjineli esisiseko. Xa sisithi sisebenza ngokukhethekileyo kwezi mathiriyeli e-QSY, oko kuthetha ukuba sakhe ithala leencwadi lezi ziresiphi ezichuliweyo, ezilungisayo kwisithuba seminyaka engama-30. Ayingomgca wentengiso; yincwadi yelog yeengxaki ezisonjululweyo.
Ukuxhawula ngesandla ngoMachining: Ukusuka kwiCasa ukuya kwiNdawo egqityiweyo
Akukho nkcazo yotyalo-mali olugqityiweyo ngaphandle kokuxoxa ukuba kwenzeka ntoni emva kokuba iqokobhe likhutshiwe. Ushiywe kunye ne-casting enamasango kunye neembaleki eziqhotyoshelweyo, kwaye ezinye iindawo ziya kufuna umatshini. Olu luphawu olubalulekileyo. Isithembiso sotyalo-mali sisondele kwimilo, kodwa kufutshane lixesha eliguquguqukayo. Kwi-hydraulic manifold, unokuba nokunyamezela okubalulekileyo ngaphakathi kwe-0.05mm. Inkqubo yokuphosa iyodwa ayinakuyibamba loo nto. Apha kulapho amaziko adibeneyo, afana noko siye sakha eQingdao Qiangsenyuan Technology Co., Ltd. (QSY), abonisa ixabiso lawo. Ukuba nomatshini we-CNC ngaphakathi endlwini ayiyonto nje elula; yindlela yokulawula umgangatho.
Oomatshini kufuneka baqonde ukuphosa. Kufuneka bazi apho kunokwenzeka ukuba i-porosity ye-shrinkage ingaba (ihlala ikufuphi neendawo zokugqibela zokukhenkcela) ukunqanda ukungqubana kwesixhobo kuyo. Kufuneka baqonde isibonelelo sesitokhwe. Ngokuqhelekileyo sishiya i-0.5mm ukuya kwi-2mm kwindawo ebalulekileyo, kodwa oko kuxhomekeke kwinxalenye yejometri kunye ne-alloy. Inxalenye yentsimbi engenasici esicekethekileyo inokonakala ngakumbi ngexesha lokupholisa, ifuna isitokhwe esingaphezulu. Abaprogram be-CNC kunye neenjineli ze-Foundry kufuneka bathethe ulwimi olufanayo. Ndibone iiprojekthi zisilela ngenxa yokuba ukuphosa kwayilwa ngaphandle kwengcinga yokulungiswa komatshini, okukhokelela kubusuku obungabambekiyo, obungcangcazelayo kwibhedi ye-CNC.
Le ntsebenziswano yiyo le nto abathengi abaninzi, ngakumbi abo bakumacandelo afana nezamandla okanye oomatshini bemizi-mveliso, bekhangela ivenkile enestophu enye. Abafuni nje umniki-nkonzo onokuchaza indlela yotyalo-mali; bafuna umntu onokuzisa icandelo eligqityiweyo, elisebenzayo. Basithumelela ushicilelo lwempompo yendlu kwi-duplex yentsimbi engatyiwayo. Siqhuba ukulinganisa ukuqinisa, sivelise ukubumba kwe-wax, siyiphose, siyinyange ngobushushu ukuze sixhathise umhlwa, emva koko sishicilele ubuso beflange kunye nemingxuma yebholiti kumaziko ethu e-CNC. Ingxelo yokugqibela yokuhlola ibhekisa zombini ukuthembeka kokuphosa (X-reyi) kunye nemilinganiselo yomatshini (CMM). Leyo yinkcazo epheleleyo, esebenzayo.
Imigibe eqhelekileyo kunye neTrap ephantse yaLungelo
Enye yeendlela ezilungileyo zokuqonda into kukubona apho yophuka khona. Inxalenye enkulu yomsebenzi wam ibikukuphononongwa kwezidumbu kwi-castings engazange yenze i-spec. Umngxunya othe rhoqo wenza nzima kakhulu inkqubo yokungena. Ngelinge lokuqinisekisa ukutya okugqibeleleyo, iinjineli maxa wambi ziyila iibhari zeembaleki ezinkulu, ezididekileyo. Oku kwandisa umthamo wentsimbi efunekayo, ixabiso leqokobhe, kunye nexesha lokucoca. Okubi kakhulu, kunokudala iindawo ezishushu ezikhokelela ekunciphiseni iziphene kwindawo ngokwayo. Ngamanye amaxesha, okona kuthe nkqo kulula ukusuka kwelona candelo linzima kokona kulungileyo. Lubizo lomgwebo, kwaye uphuhlisa kuphela eso sigwebo ngokubona ukusilela.
Omnye umgibe uthatha konke utyalo mali ichanekile ephezulu. Ukunyamezela okufikelelekayo ngumsebenzi wobungakanani benxalenye, i-alloy, kunye nolawulo lwenkqubo. Kwinxalenye encinci, ezinzileyo ye-alloy, ± 0.13mm nge-25mm ifanelekile. Kodwa kwisakhelo esikhulu kwintsimbi yekhabhoni, unokuba ujonge kwi ± 0.5mm okanye ngaphezulu ngenxa yokuncipha okungalindelekanga. Ukuthembisa kakhulu kwinqanaba lokucaphula kuyindlela yokujongana nentlekele. Kuye kwafuneka ndihlale kunye neentengiso kwaye ndichaze ukuba ngenxa yokuba sinokubamba ukunyamezela kwintloko yeklabhu yegalufa ayithethi ukuba singakwazi kwi-valve ye-20kg. Inkcazo yenkqubo inokwahluka okwakhelwe ngaphakathi.
Umphezulu olindelweyo wokugqiba nawo ufuna ukulawulwa. Umphezulu we-as-cast ovela kwiqokobhe le-ceramic elungileyo unokugudiswa kakhulu, malunga ne-3.2 μm Ra. Kodwa eso ayisosipili esikhazimlisiweyo. Ukuba umxhasi ufuna isipili kwisicelo sokuqukuqela kwamanzi, oko kukusebenza okwesibini kokupholisha. Ingongoma kukuba, inkqubo inemida. Amandla ayo amakhulu kukuntsonkotha kunye nokuguquguquka kwezinto, akunyanzelekanga ukuba ifikelele esona sigqibo sigqibeleleyo okanye ukunyamezelana okukodwa. Yinxenye ye-ecosystem yemveliso.
Ukukhangela Phambili: Inkcazo Eguquguqukayo
Ngoko ke, ukubuyisela umva kwaye uzame ukuchaza ukuphosa kotyalo-mali ngendlela ebonisa umgangatho weworkshop, yile: inkqubo yokuphosa echanekileyo, esekelwe kwipatheni impumelelo yayo ixhomekeke kwintsebenziswano elawulwayo yemodeli ye-wax yombingelelo, iqokobhe le-ceramic elayishiweyo, kunye nesinyithi esityhidiweyo, kunye nexabiso layo elipheleleyo liqondwa kuphela xa lidityaniswe noyilo olucingisisiweyo kunye neenkqubo zokuphosa emva kokugawula njengonyango lobushushu kunye ne-machining. Litsheyini, kwaye lonke ikhonkco-ukusuka kwinaliti ye-wax ukuya kwi-QC yokugqibela-kufuneka ibambe.
Inkcazo ayimi ndawonye. Ngokufika kwe-3D yoshicilelo lwe-wax ethe ngqo okanye imveliso ye-ceramic mold, imida iyancipha. Ngoku sinokuvelisa iipateni zohlobo olunye lweprototypes ngaphandle kwezixhobo, nto leyo eyinguqu kwimijikelo yophuhliso. Kodwa eyona nto iphambili kwifiziksi — ukufuduswa kobushushu, ukuqina, isinyithi—zihlala zifana. Izixhobo ezitsha zisivumele ukuba sisilele ngokukhawuleza kwaye sifunde ngokukhawuleza.
Kwinkampani efana ne-QSY, kunye namashumi eminyaka phantsi kwebhanti yayo, inkcazo ikwakulwazi oluqokelelweyo. Ikwisibophelelo seresiphi eziludaka, uvimba weenkcukacha zokulinganisa ukuqinisa amalungu osapho ahlukeneyo, kunye namehlo anobuchule bomsebenzi onokujonga iqokobhe eline-dewax kwaye azi ukuba liyavakala. Ungayifumana inkcazo esisiseko naphi na. Kodwa eyona nto, i-gritty, ukuqonda okusebenzayo-leyo ijika umzobo ube yinto ethembekileyo, ephezulu yokusebenza kwintsimbi etyhidiweyo, intsimbi, okanye i-alloy esekelwe kwi-nickel-yinto oyifumanayo kuphela ngokuyenza, imihla ngemihla, kunye nokufunda kuyo yonke into yokuthululela, okulungileyo nokubi. Lulo utyalo-mali, ngaphaya kokuphoswa.
