Ha u ntse u lahlela ntlo ea pompo ea motsoako oa cobalt bakeng sa tšebeletso ea hydraulic e phahameng-kapa AMS 5387 nozzle e lokelang ho pholoha 650 ° C le khatello ea mocheso oa cyclic - motheo oa ceramic ha se feela motsoako oa hlobo o lahliloeng. Ke moqapi ea khutsitseng oa geometry ea ka hare, tiisetso ea taolo ea botenya ba lebota, mohala oa pele oa ts'ireletso khahlano le ho hoholeha ho hoholo ha matsete. Ho QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., re bone li-ceramic cores li hloleha ho thella ka har'a li-impeller shrouds tse thehiloeng ho T800-eseng ka lebaka la ho chesa ho hoholo ha li-binder, empa hobane coefficient of thermal expansion (CTE) e sa lumellaneng le khetla e sa ka ea netefatsoa ho pholletsa le 25-110 ° C e felletseng. Ke ka lebaka leo "ceramic core for investment casting factory" e seng nako ea ho batla thepa ho rona. Ke tlhaloso e nepahetseng e nang le liphello tsa sebele tsa lefatše.
Re etsa li-ceramic cores tse fetang 12,000 selemo le selemo - e 'ngoe le e 'ngoe e entsoe bakeng sa sistimi e itseng ea alloy, moralo oa liheke, le enfelopo ea mochini oa post-cast. Li-cores tsa rona tse tloaelehileng li sebelisa li-silica-alumina tse kopantsoeng le li-CTE tse lokiselitsoeng ho ± 0.2 × 10⁻⁶/°C khahlanong le li-alloys tsa CoCr; mekhoa ea tloaelo e kenyelletsa mefuta e matlafalitsoeng ea zirconia bakeng sa> 1200 ° C liteko tsa titanium aluminide. Ho fapana le li-cores tse tsoang kantle ho sethala tse rekisoang ke barekisi ba refractory ka kakaretso, tsa rona li na le linetefatso tse tharo tse ke keng tsa buisanoa pele li lokolloa: botsitso ba karolo ea XRD ho 1000 ° C, matla a batang a batang ≥18 MPa ka mor'a dewaxing, le dimensional repeatability e netefalitsoeng ka CT scanning-eseng calipers feela. Re lekile phapang ea mantlha ho isa ho ea mantlha tlas'a 0.015 limilimithara ho 80 limilimithara tse bolelele ba liphasejeng tsa ka hare, e leng ea bohlokoa haholo ha tumello ea ho qetela ea machining e le 0.15 mm feela ka lehlakoreng le leng.
Ba bang ba ka 'na ba pheha khang ea hore li-cores tsa lehlabathe kapa tse entsoeng ka mochine li fokotsa nako ea ho etella pele. Empa ka boiphihlelo ba rona ka li-cylinder pump cylinder housings, mekhoa e meng e bitsa chelete e ngata ho ea tlaase. Li-cores tsa lehlabathe li siea bokaholimo ba Ra 12.5 µm-ha bo amohelehe bakeng sa libaka tse tiisang haeteroliki tse hlokang Ra ≤1.6 µm kamora ho qeta ho sebetsa. Li-cores tse entsoeng ka mochini li hlahisa li-microcracks ho tloha ho kheloha sesebelisoa, tse atang nakong ea ho thunya khetla le ho etsa hore likhetla li phahamisoe sebakeng sa heno. Re latetse litefiso tse phahameng tsa 23% likarolong tse joalo khahlano le li-cores tsa ceramic tse nang le matla a matala a ntlafalitsoeng le li-profiles tse laoloang tsa sintering. Tharollo ha e potlake - e bohlale ho feta: geometry ea mantlha e netefalitsoeng, boits'oaro bo ts'oanang ba mocheso, le lirekoto tsa batch tse ka lateloang tse hokahaneng le lotho ka 'ngoe.
Ke eng e arolang morekisi ea tšepahalang oa ceramic ho morekisi oa transaction? Lintho tse nne tseo re li netefatsang letsatsi le letsatsi:
- Setifikeiti sa thepa e tala: Sehlopha se seng le se seng sa silica se na le litlaleho tsa liteko tsa ASTM C704-eseng feela liphatlalatso tsa barekisi
- Mokhoa oa ho etsa 'mapa: Ho omisa ho latela mekhoa ea mongobo e laoloang ke ISO 9001 (eseng kemiso ea nako e tsitsitseng), ho thibela ho phunyeha ha micro-maqhubu a 3.2 mm-thick
- Boikarabello ba dimensional: Re lekanya mokokotlo o mong le o mong ka Zeiss CONTURA G2 RDS CMM, eseng li-optical comparators-bohlokoa bakeng sa likarolo tse laoloang ke GD&T joalo ka boemo ba mamello Ø0.05 mm
- Netefatso e khethehileng ea alloy: Li-cores tse thehiloeng ho li-co-based li lekoa ka har'a likhetla tsa matsete tsa 'nete li sebelisa li-viscosity tsa hau tse hlakileng le potoloho ea dip, eseng liforomo tsa plaster tse tloaelehileng.
Boemo bona ba taolo bo re thusa ho fana ka li-cores tsa ceramic tse tšoarellang ka ho phunya, ho thunngoa le ho tšeloa ka tšepe - leha e le bakeng sa lijeometri tse rarahaneng joalo ka li-valve tsa li-port tse ngata tse nang le likanale tse pholileng tsa 2.5 mm-diameter. Bareki ba Amerika Leboea le Europe ba lula ba tlaleha liketsahalo tse fokolang tsa 15-20% mabapi le ho bapala tse hlokang mamello e tiileng ea ka hare (± 0.08 mm). Ha ho boselamose. Litekanyetso tse ngotsoeng feela tsa ts'ebetso, metrology e lekantsoeng, le ho hokahanya ha metallurgical tse hahelletsoeng bohareng-tse sa eketsoang joalo ka mohopolo o latelang.
Haeba u batla a motheo oa ceramic bakeng sa fektheri ea ho etsa matsete ts'ebeliso moo ts'ebetso ea ts'ebetso e itšetlehileng ka botšepehi ba contour-eseng feela "ho lumellana" -ebe maqephe a data a thepa le linako tsa ho fana li bohlokoa ho feta li-log tsa ho lumellana le mocheso le litlaleho tsa tlhahlobo ea CMM. Ho QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., Re tšoara motheo o mong le o mong e le karolo e sebetsang, eseng ntho e ka jeoang. Re arolelana lintlha tsa liteko le bareki pele ho tumello ea sengoloa sa pele. Re lokisa likarohano tse kopanyang ho ipapisitsoe le matla a khetla ea hau - eseng mokhoa oa rona oa kamehla. 'Me re boloka lirekoto tsa batch bakeng sa lilemo tse 10, eseng feela ho latela, empa e le hore u tle u tsebe ho tseba hore na ho na le ntho efe kapa efe e sa hlakang ho khutlela ho sebapi, raw lot, le shift shift.
Bokamoso ba ho etsa lintho ka nepo ha bo mabapi le libopi tse kholo kapa li-CNC tse potlakileng. E mabapi le ho felisa ho se tšoane ho tloha qalong-ho qala ka mantlha. Ha tlhokahalo e ntse e hola bakeng sa marako a masesaane, liphaseje tse thata, le li-alloys tsa mocheso o phahameng joalo ka T800 le CMSX-4, li-cores tsa ceramic li tla tloha ho tloha ho thekenoloji e nolofalletsang ho ea hekeng ea boleng ba mantlha. Phetoho eo e qala ka ho botsa hore na "Na e ka etsoa?" empa “boitšoaro ba eona bo ka boleloa esale pele ka nepo hakae—le ho pakoa?” Re thehile setsi sa rona, liprothokholo tsa rona, le litšebelisano tsa rona mabapi le potso eo. Hobane ha karolo ea hau e sebetsa bareng ea 350 kahare ho kopano ea pompo e kantle ho naha, ha ho na sebaka sa ho hakanya sebakeng se se nang letho.
