Uma othile ebuza 'mayelana nentengo yensimbi', ngokuvamile usuke efuna inombolo elula. Iphutha lokuqala lelo. Intengo akuyona nje insimbi. Isimo se-alloy ngalolo suku, inkimbinkimbi ongazange uyisho, nesikhathi sokuhola onethemba lokusichoboza buthule. Ngichithe iminyaka e-QSY, e-Qingdao Qiangsenyuan Technology Co., Ltd., futhi isifundo sokuqala ukuthi imali eshibhile. intengo yensimbi ngokuvamile igcina iyingxenye ebiza kakhulu yephrojekthi.
Ukuphula i-Per Kilo Illusion
Amakhasimende amasha athanda izindleko zokukhuluma ngekhilogremu ngayinye. Ngensimbi empunga evamile, mhlawumbe uthola isisekelo. Kodwa shintshela ku-alloy esekelwe ku-nickel ukuze uthole ingxenye ye-valve yezinga lokushisa eliphezulu? Umdlalo ushintsha ngokuphelele. Ukuguquguquka kwezindleko zempahla eluhlaza kuyasangana. Ngikhumbula ekuqaleni kuka-2021, isilinganiso esasinika inqwaba yensimbi engagqwali engu-316L sasingasasebenzi phakathi namasonto amathathu ngenxa yokuthi intengo yendawo ye-nickel yeqa. Kwadingeka sibuyele ekhasimendeni, siphethe isigqoko. Akuyona nje ithikha ye-LME; kuyiprimiyamu yebanga elithile, uhlobo lwe-ingot, nesitoko somphakeli. Awuthengi insimbi yezimpahla; uthenga ukwakheka kwamakhemikhali okunembayo okuhlangabezana ne-ASTM spec.
Bese kuba khona isivuno. Yilapho isikhunta segobolondo nokutshala imali kukhombisa khona amazinyo. Ungase uthenge u-100 kg we-alloy, kodwa uma ingxenye yejometri iyiphupho elibi elinezindonga ezincane nama-flange amakhulu, isivuno sakho singase sehle siye ku-50% noma sibe ngaphansi. Yonke leyo sprue, i-runner, ne-scrap metal iyancibilika ibe yakho intengo yensimbi. Sakhe imishini eyinkimbinkimbi yezindlu lapho isivuno sasingesihle kakhulu sacishe saphinda sawucaphuna wonke umsebenzi wokukhiqiza. Intengo ngekhilo ngalinye yayingasho lutho. Izindleko zangempela zaziyinsimbi eyagcina isibuyele esithandweni.
Ngakho-ke into yokuqala esiyenzayo kwa-QSY ayikona ukunikeza inani. Okokuthola umdwebo nokwenza ucwaningo lokuthi kungenzeka yini. Singakwazi ukuphonsa lokhu kube yisiqephu esisodwa? Ingabe sidinga ukushintsha i-engeli yokusalungiswa ukuze sinciphise ukwenziwa kwemishini ngokuhamba kwesikhathi? Ukwakheka okuncane kwesinye isikhathi kungaphinda kabili isivuno. Lokho ukuxoxisana kwentengo yangempela, hhayi ukugeleza ngenani eliyisisekelo.
Iziphindaphinda Ezifihliwe: Inqubo kanye Nokunemba
Ukwakhiwa kwesikhunta se-Shell ngokumelene nokutshala izimali-umshayeli wezindleko lapha i-geometry nokuqedwa kwendawo. Ukutshala imali, ubucwebe obuyinkimbinkimbi noma izindwani ze-aerospace, kunesakhiwo sezindleko esihluke ngokuphelele. Amaphethini we-wax, igobolondo le-ceramic, imijikelezo elawulwayo ye-dewaxing kanye ne-sintering... kuwubuciko. I intengo yensimbi iba ingxenye encane. Ngibone amaphrojekthi lapho izindleko zenqubo zazingu-70% wesamba esiphelele. Amaklayenti alungisiwe enkokhisweni ye-alloy akugeja lokhu ngokuphelele.
Izidingo zokuqeda ubuso zingomunye umbulali othule. I-Ra 3.2 vs. Ra 1.6? Lokho kungase kusho umjikelezo owengeziwe wokugaya okunembayo noma ukupholisha okwenziwa ngesandla. Uma udinga indawo efana ne-cast elungele ukunameka, inqubo yokubumba kufanele ingabi nasici. Noma yikuphi ukufakwa kwesihlabathi noma i-surface pitting kusho ukuchithwa. Lokhu sikufunde kabuhlungu ekuqaleni kwama-impellers. Intengo yayisekelwe ekuqedeni kwesikhunta segobolondo elijwayelekile, kodwa iklayenti lalidinga indawo ehlanzekile ye-hydraulic. Sidle izindleko ezengeziwe zokuqhunyiswa kwesibhamu nokuhlola. Manje, kuyinto yomugqa kusicaphuni.
Nokubekezelelana. Ukubekezelela ukusakaza okujwayelekile kuyinganekwane yezingxenye ezisebenza kahle kakhulu. Ukubamba +/-0.5mm kuhlaka lwensimbi eyi-500mm eyi-ductile kuyinto eyodwa. Ukubamba +/-0.1mm esihlalweni se-cobalt alloy esingu-100mm kungenye iplanethi. Ibeka indlela yokwenza isikhunta, umthetho olandelwayo wokuhlola (ingabe sisebenzisa i-CMM?), kanye nezinga le-scrap. Ukuqinisa ukubekezelelana ngesilinganiso sokubili kungaphinda kathathu izindleko, kungakhathaliseki ukuthi intengo yensimbi.
The Machining Sinkhole
Yilapho izinkampani ezinjengezethu, ezinomshini ohlanganisiwe we-CNC, zibona isithombe sonke. Ingxenye ephonswe kahle ingonakaliswa ngokuhlelwa kahle kwemishini. Ucaphuna ukulingisa ngeshibhile ukuze uwine umsebenzi, bese izindleko zokulungisa ziyaqhuma ngoba ukusakaza bekungadizayinelwe ukwenziwa. Sigcizelela ukuthi kubuyekezwe i-DFM. Isibonelo, ukungengezi amaphedi enziwe ngomshini wokuhlanganisa kungasiphoqa ukuthi sakhe into yangokwezifiso ebiza kakhulu.
Ubulukhuni bezinto ezibonakalayo zangemuva kokusakazwa buthinta izindleko zomshini kakhulu. Insimbi engagqwali eqinisa imvula efana ne-17-4PH ingase iphonswe, bese ifafazwe ngokushisa ibe yisimo se-H900. Izama umshini oyiphupho elibi lokugqoka amathuluzi. Isikhathi somshini, ukusetshenziswa kwamathuluzi, namandla asetshenziswa konke ukukhuphuka kwezulu. Leyo ntengo yokugcina iklayenti ebiyifuna ekuqaleni? Ihambile. Okwangempela intengo isezindlekweni eziphelele zokuguqulwa isuka ensimbi ewuketshezi iye engxenyeni eqediwe, epakishiwe elungele ukuhlanganiswa.
Sasinecala elinomzimba okhethekile we-alloy gate valve. Ukulingisa kwakuzwakala, kodwa ngesikhathi somshini onzima, sashaya imbobo encane yokuncipha. Akwanele ukwehlula i-spec yokuhlola ingcindezi, kodwa kwanele ukuba ukhathazeke ngokukhathala kwesikhathi eside. Ingabe siyayichitha? Lungisa i-weld it (okuyinqubo entsha yokufaneleka yaleyo ngxubevange)? Izindleko zaleso sinqumo—ngesikhathi, izinto ezibonakalayo, nomsebenzi wobunjiniyela—azizange zibe sekuqaleni intengo yensimbi ingxoxo. Yinani lesipiliyoni nobuqotho.
Ivolumu kanye Nomdlalo omude
I-One-off ibuhlungu. Izindleko zokusetha zesikhunta, idizayini yesistimu yokungena, ukuhlolwa kwe-athikili yokuqala—incishiswa ngocezu olulodwa. I intengo isiqephu ngasinye samayunithi ayishumi singaba uhhafu walokho ngeyunithi eyodwa. Ngokukhiqiza okuhlala isikhathi eside, singakwazi ukuthuthukisa ishejuli yokuncibilika, sihlanganise ukwelashwa kokushisa, futhi simise imigqa yokumaka ezinikele. Umnotho wesilinganiso ungokoqobo, kodwa ukhahlela kuphela ngemva komkhawulo othile. Ngihlale ngitshela amaklayenti: uma lokhu kuyisibonelo, intengo imayelana nokuqinisekisa inqubo. Uma okokukhiqiza, ake sikhulume ngendlela yokudizayina isikhunta ukuze kusetshenziswe izimbotshana eziningi ukuze kwehlise izindleko zeyunithi.
Izindleko zamathuluzi yisilwane esihlukile. Ukubumba igobolondo, iphethini yensimbi ibiza izinkulungwane. Ngokufaka utshalomali, isikhunta sokufa kanye nomjovo we-wax kubiza kakhulu. Lokhu kuyi-capital investment. Amanye amaklayenti afuna ukuba ngabanikazi bamathuluzi; abanye bafuna siyibambe futhi sikhokhe inani eliphansi lesiqephu. Ayikho impendulo efanele, kuphela lokho okushiwo ubudlelwano nempilo ende yephrojekthi. Ukusabalalisa lezo zindleko zamathuluzi ngaphezu kwevolumu yempilo yonke ecatshangelwayo ukuphela kwendlela enengqondo yokucabanga mayelana nokugcina intengo yensimbi ingxenye ngayinye.
Isikhathi sokuhola singukuphindaphinda izindleko wonke umuntu akuziba kuze kube yilapho eshaywa uvalo. Ngiyidinga emavikini angu-4 kusho izinkokhiso ze-premium zempahla yokusetshenziswa, isikhathi esengeziwe seqembu le-Foundry, kanye nezindleko ezisheshayo zokuhlolwa ngelebhu nesitifiketi. Isikhathi sokuhola esingokoqobo sivumela ukukhiqizwa okuhleliwe, ukulayishwa komlilo okufanelekile, nokuhlolwa kwekhwalithi ezolile. Ukuxhamazela njalo kwengeza izindleko, ngokuvamile ezifihliwe ngendlela yengozi ephezulu kanye nokuphunyuka kwekhwalithi okungaba khona.
I-Quote Yangempela: Isamba Sezindleko Zobunikazi
Ngakho-ke ngemva kweminyaka engamashumi amathathu kulokhu, kwa-QSY, siyekile ukunikeza ngokushesha intengo yensimbi izimpendulo. Sinikeza ukuhlolwa kwephrojekthi. Kuhlanganisa insimbi (enesigatshana sokulungiswa kwezinto ezingavuthiwe zama-oda ezinsukwini ezingama-90), izindleko zenqubo (igobolondo noma utshalomali), isilinganiso sesivuno, umgwaqo womshini womshini, ukwelashwa kokushisa, ukuhlola (i-PT, UT, RT), kanye nesitifiketi (sihlinzeka nge-MTC futhi singenza inkampani yangaphandle njenge-ABS noma i-DNV). Intengo iyisamba sakho konke lokho ukuzethemba.
Ukwehluleka unguthisha. Sake sacaphuna kancane iqoqo lemizimba emikhulu yama-valve ensimbi engagqwali eyi-duplex. Sithathe isilinganiso esithile sokuncipha ngokusekelwe kuma-alloys afanayo. Sasinephutha. Ama-castings ahlanekezelwe ngokwanele ukuze adinge umshini omkhulu wokulungisa, kucishwe umkhawulo. Manje, kuma-alloys amasha, siqalisa ukuhlola okuncane kuqala. Lezo zindleko zokuhlola ziku-quote yokuqala. Akukona okungeziwe; yintengo yokuyithola kahle.
Ekugcineni, eshibhe kakhulu intengo iyona eletha ingxenye elingana, esebenza, futhi ehlala kumjikelezo wayo wempilo ohlosiwe. Akukhona mayelana nokuthola inombolo ephansi kakhulu kuspredishithi. Kumayelana nokusebenzisana ne-Foundry eqonda ukuthi insimbi iyisiqalo. Inani langempela lisekuguquleni leyo nsimbi ibe ingxenye ethembekile, nazo zonke izindleko ezifihliwe zibalwe futhi ziphathwe. Yilokho kuphela inani elibalulekile.
