Uma abantu abaningi bezwa 'izingxenye zensimbi engagqwali', babona into ecwebezelayo, esindayo, futhi 'eyizimboni' engacacile. Lowo umbono oyiphutha wokuqala. Iqiniso limbi kakhulu, lihluke kakhulu, futhi libandakanya amakhemikhali amaningi kanye ne-thermodynamics njengoba kwenza ukusebenza kwensimbi okunamandla. Akukhona nje ukuthela insimbi encibilikisiwe emgodini wesihlabathi; imayelana nokulawula okuguquguqukayo okuyikhulu ukuvimbela ingxenye ekuqhekekeni ngaphansi kokucindezeleka okushisayo noma ukugqwala endaweni ethile yokugeza yamakhemikhali. Isiphetho osibonayo siwu-10% wokugcina wendaba; owokuqala u-90% uyimpi emelene ne-physics.
I-alloy Akuyona Iresiphi, Yindawo Yokuqala
Amaklayenti avame ukuza neshidi elithi 316L futhi acabange ukuthi yilokho. Kodwa i-316L evela ku-Mill A ingaziphatha ngendlela ehlukile kuno-316L kusukela ku-Mill B ngenxa yokulandelela izakhi nezinqubo zokuncibilika. Lokhu sikufunde kabuhlungu kusenesikhathi ngenqwaba yezindlu zamaphampu. Baphumelele zonke izitifiketi ezijwayelekile kodwa baqala ukukhombisa ama-micro-fissures endaweni ene-chloride ephezulu ngemuva kwezinyanga eziyisithupha. I-alloy 'yayilungile', kodwa umlando wezinto ezibonakalayo wawungalungile ekusetshenzisweni. Manje, sichitha isikhathi esiningi sixoxa ngendawo yokusebenza—i-pH, imijikelezo yokushisa, imidiya elimazayo—njengoba senza ubukhulu bomdwebo. I insimbi engagqwali cast izingxenye okokufaka olwandle kanye nevalvu yokucubungula ukudla kokubili kungaba ngu-316L, kodwa izidingo zabo zesakhiwo esincane zihlukene nomhlaba.
Yilapho ubudlelwano bezinto ezibonakalayo besikhathi eside bubalulekile. Inkampani efana I-Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), kanye neminyaka yawo engamashumi amathathu ekulingeni nasekukhiqizeni, cishe inomtapo wezincwadi ojulile, osebenzayo wokuthi ukushisa okuhlukahlukene kwe-stainless kusebenza kanjani kumagobolondo abo nezinqubo zokubumba utshalomali. Leyo nkumbulo yesikhungo yinto ongeke uyilande kumininingwane. Basho ukusebenza ngama-alloys akhethekile afana nalawo asekelwe ku-nickel, okungitshela ukuthi bajwayele ukubhekana nokuziphatha okuqinile kokuqina kwezinsimbi ezisebenza kahle kakhulu—i-stainless iyindawo yokungena.
Ukuthela ngokwayo kuyifasitela elibucayi. Ubheke ukugeleza, indlela insimbi egcwalisa ngayo isikhunta-isiyaluyalu kakhulu futhi uthola i-oxide inclusions; kancane kakhulu futhi uthola ama-shucks abandayo. Okwezinto eziyinkimbinkimbi insimbi engagqwali cast izingxenye ngezingxenye ezincanyana, sivame ukusebenzisa ukuphonsa okusizwa yi-vacuum noma ukuthulula kokutshekisa ukulawula lokho kugcwaliswa. Akuwona umkhuba ojwayelekile wawo wonke umsebenzi, kodwa iyithuluzi olidingayo lapho ijometri ilifuna. Umgomo uyisakhiwo esiminyene, esilinganayo kusukela ekuqaleni, ngoba awukwazi ukukhipha i-porosity ngomshini.
I-Geometry Ilawula Inqubo (Hhayi Enye Indlela Ezungezile)
Lona umthetho oyisisekelo. Awukhethi phakathi kokubumba igobolondo nokufaka utshalomali ngoba eyodwa 'ingcono'. Ukhetha ngoba ingxenye ikutshela ukuthi wenze njalo. Ngikhumbula ingxenye ye-turbine blade enamashaneli okupholisa angaphakathi okwakungenakwenzeka ukuwamshini. Okuwukuphela kwendlela kwakuyi-investimenti yokutshala-ukudala i-ceramic core lapho insimbi ithululelwa khona. Ukususwa okuyinhloko ngemva kwalokho kuwumsebenzi wayo obucayi. Ukubumba igobolondo, ngakolunye uhlangothi, kuhle kakhulu ekuxazululeni okuphakathi, izingxenye zevolumu enkulu njengemizimba yamavalvu noma ukufakwa kwamapayipi. Ukuqedwa kwangaphezulu kuhle, ukubekezelelana kwe-dimensional kuhloniphekile, futhi konga kakhulu kumasayizi athile weqoqo.
Ukufakwa kuhlu kwe-QSY kwakho kokubili isikhunta segobolondo nokusakazwa kwe-investimenti njengokukhethekile kusho. Kusho bona (noma onjiniyela babo) banomuzwa wokuhambisa iphrojekthi ngenqubo efanele. Ngike ngabona izitolo zizama ukuphoqelela isikhonkwane esiyisikwele emgodini oyindilinga, zisebenzisa ukufakwa kwe-investment for a flange elula ngoba yilokho ezinakho, ukushaya isabelomali. I-smart foundry ihlola ingxenye, ukubekezelelana kwayo okudingekile, isiphetho esingaphezulu (inani lika-Ra), kanye nenani, bese incoma indlela. Kwesinye isikhathi, engxenyeni eyinkimbinkimbi kakhulu, i-hybrid-investment yenza umumo okhohlisayo we-net-net, bese usebenzisa amakhono abo omshini we-CNC ukuze afinyelele ubukhulu bokugcina obubucayi nochungechunge.
Uma sikhuluma ngemishini, leyo enye ingxenye yeqiniso. Ingxenye yabalingisi ayivamisile ukuthi ilungele ukuthunyelwa. Izindawo zokungena zidinga ukususwa, izindawo ezingaphezulu zenziwe ngomshini ukuze zihlangane nezinye izingxenye, kubhojwe izimbobo futhi kucoshwe. Ukuhlanganiswa kokusakaza kanye ne-CNC ngaphansi kophahla olulodwa, njengoba i-QSY inenzuzo, kuyinzuzo enkulu. Iqinisekisa ukuthi ochwepheshe bemishini bayawaqonda amaphutha angaba khona wokulingisa—njengalapho i-shrinkage porosity ingase icashe khona—futhi bangahlela ukusikeka kwabo ngokufanele. Igwema umdlalo wokusola phakathi kwe-Foundry kanye nesitolo somshini lapho ibhithi yethuluzi ishaya isikhala esifihliwe.
Izindleko Ezifihliwe: Ukuhlola Okungabhubhi Nokusetshenzwa Kabusha
Ukuhlelwa kwesabelomali sephrojekthi yokulingisa kuvame ukunganaki isigaba sokuhlola nokusebenza kabusha. Yilapho ikhwalithi yangempela ifakazelwa khona. Ukuhlolwa kwe-Dayi penetrant (PT) kokuqhekeka kwendawo, ukuhlolwa kwe-radiographic (RT) kwe-voids yangaphakathi, ukuhlolwa kwengcindezi yezingxenye ezivaliwe-ngayinye yengeza izindleko nesikhathi. Kodwa ukweqa kuwukugembula. Sabeka umthetho: nganoma yisiphi insimbi engagqwali cast izingxenye kuhlelo lokusebenza lwesevisi olubucayi noma oluqinile, i-RT ayixoxiswana, nanoma i-spec yeklayenti ingayibizi ngokusobala. Isisindise ekuhlulekeni kwezinkambu ezimbalwa.
Ukusebenza kabusha kungenye into engokoqobo. Ukungafani okuncane esibunjeni, ukushintsha okuncane ngesikhathi sokuqina, futhi ungase ube ne-flange engu-0.5mm ngaphandle kokucaciswa. Ingabe ingasindiswa ngokushisela nokuphinda kwenziwe imishini? Kwesinye isikhathi, uma unomshini wokushisela oqinisekisiwe webanga elithile le-stainless futhi ulandele imithetho eqinile yokwelashwa kokushisa kwangemuva kokushisela ukuze ubuyisele ukumelana nokugqwala. Kwesinye isikhathi, kuba yizicucu. Izinga lesivuno liwukhiye wemethrikhi yanoma iyiphi i-Foundry. Isivuno esiphezulu sibonisa ukulawulwa okuhle kwenqubo. Lapho uhlola umphakeli, ukubuza mayelana nesilinganiso sabo sokukhiqiza esivamile sezingxenye ezifanayo kuveza kakhulu kunokucela nje inani.
Ama-Special Alloys Aseduze
Ukusebenza nge-standard 304 noma 316 engagqwali kucishe kukuqeqeshele ukweqela kuma-superalloys e-QSY ebalula, afana ne-nickel noma asekelwe ku-cobalt. Lezi zinsimbi zinzima kakhulu. Ayabonakala uma encibilikile, ajwayele ukudabuka, futhi aqine ngesihluku ekusebenziseni amathuluzi ngesikhathi somshini. Izimiso zokuqiniswa okulawulwayo kanye nokuphatha okushisayo okufunda kokungenasici zisanda kukhuliswa. Uma i-Foundry ingakwazi ukusingatha lezo, kuphakamisa ukuthi izilawuli zabo zenqubo zokungabi nebala elivamile cishe ziqinile kakhulu. Kungummeleli omuhle wamandla.
Isibonelo, i-gating nesistimu yokukhuphuka-iziteshi eziphakela insimbi encibilikisiwe engxenyeni yengxenye-ye-nickel alloy casting kuwumsebenzi wobuciko bokulingisa okushisayo. Awugcwalisi isimo nje; uqondisa ukushisa ukuze uqinisekise ukuthi izingxenye eziwugqinsi ziyaqina ekugcineni ukuze ugweme ukushwabana kwemigodi. Ukuhlela okufanayo okucophelelayo, ngeziteki eziphakeme nje, kusebenza ekufuneni izicelo ezingenasici. Konke kumayelana nokuphatha ukushisa.
Umcabango Wokugcina: Ubambiswano, Hhayi Ukuthenga
Iya-oda insimbi engagqwali cast izingxenye akufani nokuthenga amabhawodi angekho eshalofini. Ukusebenzisana kobuchwepheshe. Amaphrojekthi aphumelela kakhulu ayenzeka lapho iklayenti labelana ngomongo ogcwele wokusetshenziswa kwengxenye, futhi umsunguli unikeza impendulo ngomklamo wokwenziwa—ukuphakamisa ama-engeli acashile asalungiswa, ukutusa ukujiya kwezindonga ezifanayo, ukweluleka ngokuthi kufanele kubekwe kuphi imigqa yokuhlukanisa. Okuhlangenwe nakho kwe-Foundry, njengeminyaka engu-30 ebalulwe yi-QSY, empeleni kuyisizindalwazi esikhulu salokho okusebenzayo nalokho okungasebenzi emhlabeni wangempela.
Umkhiqizo wokugcina kufanele ungabonakali. Akufanele ihluleke, akufanele igqwale ngaphambi kwesikhathi, kufanele ivele isebenze. Lokho kwethembeka kuyinani langempela lokubunjwa okwenziwe kahle, kude kakhulu nenani lekhilogremu lensimbi engagqwali. Kungumphumela wezinkulungwane eziyinkulungwane, izinqumo ezilungile kusukela ekuncibilikeni kuya ekuthunyelweni, iningi lazo umsebenzisi wokugcina angeke alibone—futhi kufanele kube kanjalo.
