Isifinyezo: Lo mhlahlandlela osebenzayo uhlukanisa izimbangela zezinkinga zokutshala izimali kanye nezinyathelo zokulawula ikhwalithi ezingenzeka, usize amaqembu ezimboni athuthukise ingxenye yesivuno futhi akhethe abahlinzeki abaqeqeshiwe.
Konjiniyela nabathengi bezimboni, ukutshala imali - okubuye kwaziwe kabanzi ngokuthi ukukhishwa kwe-wax elahlekile - kuvame ukudideka negama elibanzi lokulingisa ngokunemba.
Abasebenzisi abaningi basesha lawa magama ngokushintshana, kodwa umehluko ubalulekile uma udinga ukubeka okucacile okulindelwe yikhwalithi.
Ukufakwa kwe-investment kubhekise ngqo enqubweni yokwakha izingxenye kusetshenziswa iphethini ye-wax elahlwayo embozwe ngezinto zobumba eziphikisayo.
Ukukhishwa kwe-wax elahlekile kuchaza inqubo efanayo ewumongo, kuyilapho ukunemba kuyigama lesambulela elihlanganisa izinqubo eziningi zokukhiqiza ezicishe zifane nenetha, ngokusakazwa kokutshalwa kwezimali njengegatsha elilodwa elikhulu.
Lo mhlahlandlela ugxile ekushiyekeni nasezinseleleni zokulawula ikhwalithi eziyingqayizivele ekuhambeni komsebenzi wokusakaza utshalo-mali, kunokuphinda izincazelo zenqubo yokunemba okujwayelekile.
Kumathimba afuna isizinda esengeziwe senqubo eyinhloko, ungabhekisela esethulweni sethu esigcwele kubuchwepheshe bokukhipha i-wax obulahlekile.
Izinkinga Ezivamile Zokutshala Imali Eziningi Nezimbangela Zazo
Ngisho namapharamitha enqubo amiswe kahle, izingxenye zokutshala izimali zivame ukuba nezinkinga ezingabonakali kuze kuhlolwe okokugcina.
Eziningi zalezi zinkinga aziveli ngokungahleliwe. Babuyela emuva kumaphuzu athile alawulekayo ekwenzeni iphethini, ukukhiqizwa kwamagobolondo noma ukuthela.
Ukuqonda lezi zimbangela kusiza amaqembu ehlise ukusebenza kabusha okuphindaphindiwe futhi agweme ukwamukela amaqoqo anesici.
I-Gas Porosity kanye ne-Inclusions
I-gas porosity ibonakala njengama-voids amancane ayindilinga phezu noma ngaphansi kwendawo engaphezulu, ngokuvamile evezwa ngemva komshini.
Ivame ukumila lapho igesi evalelekile ngaphakathi kwegobolondo le-ceramic ingaphunyuki ngokushesha ngokwanele ngesikhathi sokugcwaliswa kwensimbi encibilikisiwe, inkinga evamile lapho kukhiqizwa inkimbinkimbi. insimbi engagqwali impeller castings.
Izimbangela ezivamile zihlanganisa ukungakwazi ukungena kwegobolondo okwanele, umswakama owedlulele ezintweni eziphikisayo, noma ukuthela insimbi ngesivinini esikhulu esivalela umoya ngaphakathi kwesikhunta.
Okufakiwe okuqinile yizinhlayiya zangaphandle ezingezona ezensimbi ezishumekwe ekubunjweni.
Ngokuvamile ziphuma ezincezuni zegobolondo eziqhekekile eziphuka ngesikhathi zithelwa, umlotha osalayo ongashiswanga oshiywe ngaphakathi kwesikhunta ngemva kokushiswa kwengcina, noma ukungcola okuxutshwe ensimbi encibilikisiwe ngaphambi kokuthelwa.
Ngokungafani ne-porosity yendawo ehlukile, ukufakwa okukhulu okushumekiwe kungabangela ukwehluleka kwengxenye okungalindelekile ngaphansi komthwalo we-cyclic.
I-Shrinkage Cavity kanye ne-Micro Porosity
Ukonakala kokuncipha kwakheka lapho insimbi encibilikisiwe incipha kakhulu phakathi nokuqina ngaphandle kokuthola okuphakelayo okuwuketshezi okwengeziwe ukuze kunxeshezelwe.
Izimbobo ezinkulu zokushwabana ezivulekile kulula ukuzibona engxenyeni engaphezulu, kodwa i-micro porosity efihlwe ngaphakathi kwezingxenye eziwugqinsi iyinkinga kakhulu.
Imvamisa ayiveli phakathi nokuhlolwa okubukwayo okujwayelekile, futhi ivuza kuphela noma ihluleke ukuhlolwa kwengcindezi isikhathi eside ngemva kokuba ingxenye ilethiwe.
Lesi sici cishe ngaso sonke isikhathi sikhomba ekungeneni kahle kwesango kanye nesakhiwo sesikhuphukeli.
Uma ukulandelana kokuqinisa kungalandeli indlela ecacile eqondisayo kusukela engxenyeni ekude kakhulu ebuyela esikhuphukeni sokuphakelayo, izindawo ezishisayo ezihlukanisiwe nakanjani zizokwakheka futhi zidale ukuncipha kwangaphakathi.
Ukuqhekeka komhlaba kanye nokuhlanekezela
Imifantu engaphezulu kanye nokuhlanekezela kwengxenye kuvame ukuvela ngesikhathi sokupholisa. Ukucindezeleka okushisayo okungalingani kudlula amandla wento ekushiseni okuphezulu.
Lolu daba luvame kakhulu ezingxenyeni zejiyomethri eziyinkimbinkimbi enezindonga ezincane, lapho izigaba ezihlukene zodonga zipholile ngamanani ahluke kakhulu.
Imifantu ingase yethulwe phakathi nenqubo yokukhipha amagobolondo.
Uma abasebenzi besebenzisa umthelela womshini owedlulele ngenkathi bekhipha igobolondo le-ceramic, ukusakaza okusashisa kakhulu kungase kuveze imifantu emincane efihliwe esakazeka kamuva ngesikhathi somshini noma isevisi.
Ukuhlanekezela ngokuvamile kwenzeka lapho iphethini ye-wax ngokwayo ishintsha ngaphambi kokwakhiwa kwegobolondo, noma lapho ukusakaza kukhishwa ngenkathi kushisa, ngaphambi kokuba ukucindezeleka kwangaphakathi kokushisa kuphele ngokwanele.
I-Actionable Investment Casting Quality Control Points
Izinkinga eziningi zekhwalithi yokutshala izimali azikwazi ukulungiswa ngemva kokuthulula.
Isu lokulawula elisebenza kahle kakhulu ukusungula izindawo zokuhlola ezingaqinisekiswa kuzo zonke izigaba ezinkulu zokukhiqiza, kunokuthembela ngokuphelele ekuhlolweni kwengxenye yokugcina.
Le ndlela ibamba amaphutha agwemeka kusenesikhathi futhi ivimbele wonke amaqoqo ukuthi angalahli.
Ukuhlolwa Kwangaphambi Kokukhiqiza Isikhunta kanye Nephethini Ye-wax
Ukulawulwa kwekhwalithi kuqala ngaphambi kokuba kuthelwe noma iyiphi insimbi. Iphoyinti lokuhlola lokuqala elibalulekile wukuhlolwa kokuqala kobukhulu bephethini ye-wax.
Ngisho namaphutha amancane e-dimensional kuphethini ye-wax azophindaphinda ngemva kokwakhiwa kwegobolondo nokuqiniswa kwensimbi, okwenza ingxenye yokugcina iphelelwe ukubekezelelana.
Umkhuba ojwayelekile ukuhlola iphethini yokuqala ye-wax kukho konke ukukhiqizwa okusha kuqhathaniswa nomdwebo ogcwele we-2D, kunokuba uhlole izilinganiso ezimbalwa ezibucayi.
Amaqembu kufanele futhi aqinisekise ukuthi ayikho imibimbi engaphezulu ebonakalayo, imigqa yokugeleza noma ukukhubazeka komjovo wephethini okukhona engxenyeni ye-wax, njengoba lokhu kuzodlulisela ngqo endaweni yokugcina yensimbi.
Ukwenza Igobolondo Nokulawula Inqubo Yokuthela
Lena indawo yokuhlola ikhwalithi evame ukunganakwa kubathengi abaningi, ngoba inqubo yokwakha amagobolondo yenzeka ngaphakathi kwe-Foundry futhi ayivamisile ukubonakala kumakhasimende.
Inombolo yezingqimba ze-ceramic coating, isikhathi sokumisa esilawulwayo phakathi kwesendlalelo ngasinye, nezinga lokushisa lokugcina lezinga eliphezulu lokushisa kwamagobolondo konke kuthinta ngokuqondile ikhwalithi yokugcina yokuphonsa.
Isikhathi sokumisa esinganele phakathi kwamajazi siholela kumagobolondo amanzi, abuthakathaka aqhekeka kalula noma awonakele ngesikhathi sokuthululwa.
Ukutubeka okungaphelele kwe-wax kushiya insalela yekhabhoni ngaphakathi kwesikhunta, ehlangana nensimbi encibilikisiwe futhi idale ukonakala kwendawo.
Ukuqinisekisa ukuthi umphakeli ulandela imijikelezo yenqubo yegobolondo ebhaliwe, esikhundleni sokujaha ukukhiqiza ukuze uhlangabezane nezinsuku eziwumnqamulajuqu, kungenye yezindlela ezinokwethenjelwa kakhulu zokunciphisa amaphutha angalindelekile.
Ukuhlolwa Kokugcina Kobukhulu Nokungabhubhi
Ngemuva kokuphonswa, ukukhipha nokuqeda, isigaba sokugcina sokuhlola siqinisekisa ukuthi izingxenye ziyahlangabezana yini nazo zonke izidingo ezishiwo.
Lokhu kufanele kubandakanye ukuhlolwa kobukhulu ezindaweni ezibucayi zokukhwelana, ukuhlolwa okubonakalayo kokuqhekeka kwendawo kanye nokukhubazeka, nokuhlola okufanele okungacekeleki phansi okukhethiwe ngokusekelwe ekusetshenzisweni kokuphela kwengxenye.
Ezingxenyeni ezisetshenziswa ekusetshenzisweni komthwalo oqukethe ingcindezi noma umjikelezo omkhulu, ukuhlola okungeziwe okujwayelekile okujwayelekile kuhlanganisa ukuhlolwa kokuvuza kwengcindezi, ukuhlolwa kwe-fluorescent penetrant ukuze kuqhekeke indawo, futhi kwezinye izimo ukuhlolwa kwe-X-ray ukuze kutholwe ukushwabana kwangaphakathi okufihliwe okungenakutholwa ukuhlolwa okubukwayo. umhlahlandlela wabahlinzeki abaphezulu bokutshala imali.
Ungalihlola Kanjani Ikhono Lenqubo Yangempela Yomhlinzeki Wokutshala Imali
Awudingi ukuvakashela i-Foundry mathupha ukuze wenze ukuhlola okuphusile kokuqala kokuvuthwa kokulawulwa kwekhwalithi kwangempela.
Imibuzo embalwa elula nokuhlolwa kwamadokhumenti kungakusiza ukuthi uhlunge abahlinzeki abaletha kuphela okukhiphayo okungaguquki kwekhwalithi ephansi.
- Buza ukuthi bayawagcina yini amarekhodi enqubo ehlelekile yokubala kwesendlalelo segobolondo, amazinga okushisa okutubeka kanye nezinga lokushisa langempela lokuthela eqeqebeni ngalinye.
- Qinisekisa ukuthi umphakeli uyahlinzeka yini ngombiko ophelele wokuhlolwa kwe-athikili yokuqala ohlanganisa amarekhodi okulinganisa ubukhulu, imibiko yokuhlolwa kwezinto ezibonakalayo kanye nemiphumela yokuhlolwa kokukhubazeka kokuqalisa kokukhiqiza okusha.
- Cela ukubona imibiko yokuhlolwa kwe-athikili yokuqala yakamuva yezingxenye ezifanayo, ukuze uqinisekise ukuthi ububanzi bazo bangempela bokuhlolwa buhambisana nezidingo zakho zomdwebo.
- Qinisekisa ukuthi ingabe ukwelashwa kwabo okujwayelekile kwangemuva kokusakazwa kuhlanganisa ukukhululeka kwengcindezi, okunciphisa kakhulu ingcuphe yokuhlanekezela okufihliwe kanye nokuqhekeka ezingxenyeni eziyinkimbinkimbi ze-alloy.
Uma udinga ukuthola izingxenye zokusakaza zokutshala izimali ezinembayo, ukubuyekeza lezi zinkomba zokulawula inqubo kusenesikhathi ekuhlolweni komhlinzeki kusiza ukugwema izimanga eziningi zekhwalithi ezibizayo kamuva.
| Uhlobo Lwesiphambeko Esivamile | Inqubo Yokuqala Eyisisekelo | Indlela Yokuhlola Esheshayo Esizeni |
| I-Gas Porosity | Ukuthulula nokushiswa kwegobolondo | Hlola ngokubona indawo esebenza ngomshini ukuze uthole ama-void amancane ayindilinga |
| Okufakiwe Okuqinile | Ukwenza amagobolondo nokuncibilika kwensimbi | Sebenzisa ukuhlola ukungena ukuze ubone izindawo eziqinile ezingezona ezensimbi ezivezwe phezulu |
| I-Shrinkage Cavity / Micro Porosity | Ukwakhiwa kwe-gating nokuqinisa | Yenza ukuhlolwa kokuvuza komfutho noma isampula yokuhlola indawo ye-X-ray ezigabeni eziwugqinsi |
| Ukuqhekeka Kobuso | Ukupholisa nokukhipha amagobolondo | Sebenzisa ukuhlola okubonakalayo okukhulisiwe noma ukuhlola okungaphakathi emakhoneni acijile kanye nezindawo eziguquguqukayo eziwugqinsi. |
| Ingxenye Ukuhlanekezela | Iphethini ye-wax kanye nokupholisa ngemva kokuthululwa | Qhathanisa ubukhulu bomhlangano obubucayi ngokumelene nokubekezelela komdwebo |
Imibuzo Evame Ukubuzwa
Ngingayinciphisa kanjani ingozi yokukhubazeka esigabeni sokudweba?
Ungakwazi ukwehlisa kakhulu izinga lokukhubazeka ngokuhamba kwesikhathi ngokugwema izinguquko ezingazelelwe, ezingaguquki ekujikeni kodonga, wengeze irediya eyindilinga efanele kuwo wonke amakhona acijile, futhi uxhumane nomnikezeli wakho ukuthi yiziphi izilinganiso ezibaluleke kakhulu ekuhlanganiseni.
Lezi zinguquko ezincane zedizayini zenza ukuqina kokuqondisa kube lula kakhulu ukulawula.
Yikuphi ukubekezelelana okujwayelekile okungazuzwa ukutshala imali okujwayelekile?
Ngaphansi kwezimo ezijwayelekile ezingezona ezokwenziwa komshini, kuningi elijwayelekile le-carbon steel nezingxenye eziphansi ze-alloy ngaphakathi kobukhulu bobukhulu obungu-300mm, ukusakazwa kotshalomali okulawulwa kahle kungabamba ukubekezelelana ngokuthembekile eduze kuka-±0.5mm ngobubanzi obungu-50mm, ngaphandle kokudinga ukwenziwa kwemishini yangemuva kokusakazwa okubanzi.
Ukubekezelelana okuqinile kungenzeka, kodwa ngokuvamile kudinga imisebenzi eyengeziwe yokulinganisa yesibili ngemva kokusakazwa.
Izingxenye ezinobukhulu obuphelele obukhulu noma izinto ezikhethekile ezinengxubevange ephezulu zingase zidinge ukucaciswa kokubekezelela okulungisiwe okuqinisekiswe nomhlinzeki kusengaphambili.
