Uzwa ukulingwa kwensimbi eqinile kancane futhi izincwajana zidweba isithombe sokuphelela: izingxenye ezicishe zifane nenethi, izici zokumakhenikha ezinhle, ubuncane be-porosity. Kodwa hamba uye endaweni esunguliwe ezame ukuyisebenzisa, futhi indaba iba yimbi. Akuyona inhlamvu yomlingo; kuyinqubo ehlala efasiteleni elincane kakhulu lokulawula, futhi ukulenza lingalungile kuyabiza. Izitolo eziningi zicabanga ukuthi izinga lokushisa lilingana nje, kodwa empeleni limayelana ne ukukhishwa kwensimbi okuyingxenye eqinile Ukuziphatha kwe-slurry's thixotropic—leso simo esiyinqaba lapho kugeleza khona njengoketshezi ngaphansi kwe-shear kodwa sibambe isimo esiqinile uma simile. Khombisa lokho, futhi unokuthile. Uphuthelwe, futhi ugqolozele ibhilidi elibizayo le-scrap.
Umbono Oyinhloko kanye Lapho Abantu Bakhubeka Khona
Isimiso esiyisisekelo silula ngendlela ekhohlisayo. Esikhundleni sokuthela insimbi ewuketshezi ngokugcwele, usebenza nengxubevange emushy, isimo esiqinile kancane, ngokuvamile cishe ingxenye eqinile engama-30-50%. Lolu daka lube selujova edayifini. Umbono oyiphutha omkhulu? Ukuthi lokhu kuwukusakaza nje okupholile. Akunjalo. Ukulungiswa kwe-slurry yikho konke. Ungahamba umzila we-rheocasting, lapho upholisa khona insimbi ewuketshezi endaweni eqinile kancane ngenkathi ushukumisa, noma i-thixocasting, lapho uqala khona nge-billet eqinile elungiselelwe ngokukhethekile bese uyishisa kabusha. I-Rheocasting ibonakala iqonde kakhudlwana, kodwa ukulawula ukupholisa nokuyaluza ukuze uthole umfaniswano, ukwakheka okuhle kwembulunga yonke ku-slurry—lokho ubuciko. Ngikubonile ukusethwa lapho ukuyaluza bekucishwe khona ngomphetho omncane, futhi ingxenye ewumphumela yaba nezindawo ezibuthakathaka ongakwazi nokuzibona kuze kube yilapho ukuhlolwa kokukhathala.
Abaningi bacabanga ukuthi noma iyiphi i-aluminium noma i-magnesium alloy izosebenza. Akulona iqiniso. Ukwakheka kwengxubevange kudinga ukuvumela ukwakheka kwesigaba se-alpha-Al esiyindilinga kuleyo ndawo ye-mushy. Ezivamile i-A356 ne-A357 aluminium, kodwa noma kunjalo, izakhi zokulandelela ezincane zingalahla i-morphology. Sake saba nenqwaba ye-A356 enokuqukethwe kwensimbi okungaphandle kwe-spec. I-viscosity ye-slurry yayingalungile, okuholela ekugcwaliseni okubi ezingxenyeni ezincane. I-metallurgy kufanele ibe khona kusukela ekuqaleni.
Bese kuba nesicupho semishini. Lokhu akukhona ukusakaza kwe-die okujwayelekile okune-tweak. Igumbi lokudutshulwa nesistimu yepiston idinga ukuphatha lokho kudaka kwe-viscous, abrasive ngaphandle kokwethula isiphithiphithi esicekela phansi isakhiwo. Amasango nabagijimi baklanywe ngokuhlukile-ngokuvamile bakhudlwana futhi bushelelezi ukuze kugcinwe ukugeleza kwe-laminar. Ngikhumbula iphrojekthi lapho sazama khona ukulungisa umshini omdala wokulingisa. Umphumela waba ukugunda okweqile esangweni, okucekele phansi isakhiwo se-globular esisebenze kanzima ukuze sisenze, siphendule udaka lubuyele ekubeni yi-dendritic, imfucumfucu ebuthakathaka. Leso kwakuyisifundo sabantu abayisithupha sokunganqamuki amakhona.
Icala Elingokoqobo: Izinduku Zokuxhuma kanye Nempi Ye-Porosity
Ake sikhulume ngohlelo lokusebenza lwangempela: izinduku zokuxhuma izimoto ezisebenza kahle kakhulu. Lapha kulapho ukukhishwa kwensimbi okuyingxenye eqinile kufanele kukhanye-amandla aphezulu, i-porosity ephansi, impilo enhle yokukhathala. Sisebenze ekugijimeni kwe-prototype yeklayenti le-motorsport. Umgomo wawuwukushintsha induku yensimbi eyenziwe ngomgunyathi esikhundleni sensimbi elula, eyi-aluminium ngaphandle kokudela ukwethembeka.
Amashothi okuqala ayishumi nambili ayemahle. Izingxenye ziphume ne-matte, indawo ebushelelezi, ukunemba kwe-dimensional kwakungaphakathi kuka-0.1mm. Kodwa lapho senza ukuhlolwa kwe-X-ray, sathola i-micro-porosity engavamile endaweni ye-shank. Hhayi i-gas porosity, kodwa i-shrinkage. Inkinga? Ngisho nasesimweni esiqinile, ukondla kubalulekile. Ukuqiniswa kulawulwa kakhulu, kodwa uma izinga lokushisa lingaphelele, usathola amachibi angawodwa anciphayo. Bekufanele sengeze iziteshi zokupholisa zasendaweni ku-die futhi silungise izinga lokushisa elinodaka ngo-15°C nje ukuze siqondise ingaphambili lokuqinisa kahle. Kwakuyisonto lokulungiswa kwemizuzu, ama-shot log, nama-CT scan.
Lokhu kuhambisana nephuzu elibanzi: ukuqapha inqubo. Ekusakazeni okuvamile, uqapha izinga lokushisa nengcindezi. Lapha, udinga idatha ye-slurry viscosity noma ingxenye eqinile ngesikhathi sangempela, okunzima kakhulu ukukukala ngokuqondile esitezi sokukhiqiza. Sigcine sisebenzisa ummeleli: iphrofayili yamandla ku-piston yomjovo. Ijika elithile elihlotshaniswa nekhwalithi enhle ye-slurry. Kwakuwuhlelo lokusebenza olungaphelele, kodwa lwawufeza umsebenzi. Lolu uhlobo lokuxazulula izinkinga ongakaze ulufunde emaphepheni ezemfundo.
Ukulinganiselwa Kwezinto Ezibalulekile kanye Nombuzo Wengxubevange
Nakuba i-aluminium ne-magnesium zithola konke ukunakwa, kuthiwani ngezinsimbi noma ama-alloys akhethekile? Izithiyo zobuchwepheshe ziyaphindaphindeka. Amazinga okushisa okucubungula aphezulu kakhulu, futhi ukulawula isakhiwo se-slurry kuyiphupho elibi. Ngiyazi ngamaphrojekthi e-R&D ensimbi engagqwali, kodwa ukusebenza kwezohwebo kusekude kakhulu. Kulapho ubungcweti bozakwenu osenesikhathi eside bemashini nokusakaza buba bucayi.
Thatha inkampani efana I-Qingdao Qiangsenyuan Technology Co., Ltd. (QSY). Ngaphezu kweminyaka engama-30 ekubunjweni kwamagobolondo kanye nokutshala imali, kanye nokwenza imishini ye-CNC, babone izinqubo ziza zidlula. Ukuvakashela indawo yabo e- tsngtaocnc.com, uthola umuzwa wobuchwepheshe be-pragmatic. Basebenza ngensimbi ekhonjiwe, insimbi, i-stainless, kanye nalawo ma-alloys akhohlisayo afana ne-cobalt ne-nickel-based. Kubo, ukugxumela ekuqineni kancane kwalezi zinto zezinga eliphezulu lokushisa kuzodinga ukusetshenzwa kabusha okuyisisekelo kanye nesisekelo seklayenti esizimisele ukukhokha iprimiyamu enkulu. Akwenzeki, kodwa icala lebhizinisi kufanele libe liqinile—mhlawumbe engxenyeni ebalulekile ye-aerospace lapho isisindo namandla kubaluleke kakhulu, futhi izindleko zingelesibili.
Izinqubo zabo eziyinhloko-ukutshala imali, ukubumba amagobolondo-ziletha inkimbinkimbi emangalisayo kanye nokuqedwa kwangaphezulu kwalawo ma-alloys asebenza kahle kakhulu. Ngezinye izikhathi, indlela eyazama futhi yeqiniso iyona elungile. Ukusunduza inqubo entsha efana ne-semi-solid kuleso sikhala akuyona nje inselele yobuchwepheshe; kumayelana nokuqonda lonke iketango lenani, kusukela ekutholeni impahla eluhlaza ukuya ekwelashweni kokushisa kwangemva kokusakazwa kanye nokwenza imishini. Indlela edidiyelwe ye-QSY kusukela ekulingiseni kuye ekwenzeni imishini ye-CNC iyinzuzo enkulu ekuhlanganiseni ingxenye, kodwa isekelwe ezinqubweni abazenze kahle emashumini eminyaka.
I-Integration Headache: Ukusuka ekusakazeni kuya kuMachining
Inkulu lena. Ingxenye ye-semi-solid cast ayihlali iyingxenye eqediwe. Ivame ukudinga imishini. Futhi izici zomshini zingahluka. Impahla iminyene, inaleso sakhiwo esihle se-globular, kodwa ukugqoka kwamathuluzi kungase kungalindelekile. Sithole ukuthi ngenkathi ubuciko obujwayelekile buthuthuka ngenxa yokuqina okuphansi, ukuqina, ukwakheka okufanayo kwesinye isikhathi kuholela ekonakaleni konqenqema lwamathuluzi emisebenzini ethile, njengokumba izimbobo ezijulile. Awukwazanga ukusebenzisa izifunzo ezifanayo nezivinini njengengxenye evamile ye-die-cast.
Yingakho ukuba nemishini yasendlini, noma ngokubambisana okuqinile, kungaxoxiswana. Iluphu yempendulo kufanele ibe mfushane. Ochwepheshe bemishini badinga ukutshela ithimba labalingisi uma bebona ukuguga kwamathuluzi okungajwayelekile noma izinkinga zokuqedwa kwendawo, okungahle kulandelele ukuhluka okuncane ekulungiseleleni okudaka ngalolo suku. Yilokhu kuhlanganiswa okuqondile—njengalokhu i-QSY ekwakhiwe—okuvumela ukuthuthukiswa kwenqubo yangempela. Iqembu elilingisayo aligcini nje ngokuphonsa izingxenye phezu kodonga.
Ngikhumbula i-gearbox esiyikhiqizayo. Ukuzinza kwe-as-cast dimensional bekukuhle kakhulu, kodwa ngesikhathi sokusebenza esibhekene nakho, sithole ingxoxo encane. Kuvele ukungezwani okuncane engxenyeni eqinile kuyo yonke ingxenye (akunakulinganiswa kalula) kudale ukuhluka kokuqina okuncane. Ukulungiswa kwakubuyele esiteji sokubamba i-slurry, kuqinisekisa inkambu yokushisa efanayo. Ngaphandle kokuthi uchwepheshe wemishini ayihlabe umkhosi ngokushesha, besiyokusula njengendaba yamathuluzi bese sigeja umnyombo.
Ngakho, Kuwenza Nini Umuzwa?
Ngemva kwakho konke lokhu ukukhishwa kwensimbi okuyingxenye eqinile kuwufanele? Hhayi kukho konke. Izindleko zokusetha ziphezulu, iwindi lenqubo liqinile, futhi lidinga izinga lokulawulwa kwenqubo lapho ama-Foundries amaningi angahlonyiselwe khona. Owenani eliphezulu, izingxenye eziyinkimbinkimbi kakhulu lapho izinzuzo—ukunciphisa isisindo, amandla, nesitoko somshini esincishisiwe—zihumusheka ngokuqondile ekusebenzeni noma ukonga izindleko ezansi nomfula.
Cabanga ngezingxenye zokuphepha kwezimoto (amaqupha, abakaki), izindlu zamathuluzi wamandla weprimiyamu, noma okokufaka okuthile kwe-aerospace. Ngevolumu ephezulu, izingxenye zempahla, ukulingisa okujwayelekile kokucindezela okuphezulu kuseyinkosi. Ngomumo oyinkimbinkimbi kakhulu kuma-superalloy, ukusakaza kwe-investimenti kungase kuhluleke. I-Semi-solid ihlezi endaweni ephakathi kwayo.
Ikusasa? Ilele ekuqapheni okungcono, okungabizi kwesikhathi sangempela kwe-slurry kanye nokwakhiwa kwe-alloy okuqinile. Mhlawumbe i-automation kanye ne-AI kungasiza ukuzinzisa lelo windi lenqubo. Kodwa okwamanje, kusalokhu kuyinqubo yochwepheshe. Liyithuluzi elinamandla ebhokisini lamathuluzi, kodwa udinga ukwazi ukuthi ungalifinyelela nini, futhi udinga ithimba nesineke ukuze ulishayele. Akukhona mayelana nokushintsha ezinye izindlela; kumayelana nokuba nenye inketho lapho imininingwane iba nzima. Futhi ngezinye izikhathi, umnyakazo ohlakaniphe kakhulu wukubona ukuthi ungawusebenzisi nini nhlobo, futhi unamathele endleleni efakazelwe elethela iklayenti, usuku nosuku.
