Ha baenjiniere ba hlakisa colloidal silica investment casting bakeng sa likarolo tsa tšepe tse phahameng, ha ba khethe mokhoa feela-ba khetha tiiso ea ts'ebetso. Dimensional botsitso tlas'a mocheso oa libaesekele. Qetello ea bokaholimo e felisang ho sila ka morao. Taolo ea microstructure ka li-alloys tsa cobalt moo moeli o mong le o mong oa lijo-thollo o leng bohlokoa. Tsena ha se melemo ea khopolo-taba. Ke liphetho tseo re li bonang letsatsi le leng le le leng setsing sa rona se lumellanang le ISO Qingdao-moo sehlopha se seng le se seng sa AMS 5387 cobalt alloy pump housing kapa T800 nozzle e fetang litekong tse tharo tse ikemetseng tsa CMM pele li tloha moleng.
Hobaneng ha colloidal silica investment casting e fana ka moo mekhoa e meng e emang teng
Colloidal silica slurries e theha likhetla tsa ceramic tse matla, tse tsitsitseng ka mocheso ho feta li-binders tsa setso tsa ethyl silicate. Matla ao a fetolela ka ho toba mapetsong a seng makae a likhetla nakong ea dewaxing le ho thunya - le ho se mamelle letho bakeng sa ho sotha matlong a masesaane a nang le marako a lekantsoeng bakeng sa tšebeletso ea hydraulic ea 420 bar. Re lekanyelitse katoloso ea khetla ho 0.012% ka ° C ho fihla ho 1100°C; bahlolisani ba sebelisang likhalase tsa metsi kapa lisebelisoa tsa alumina-bond hangata li feta 0.035%. Phapang eo? Ke lekhalo lipakeng tsa ho otla ± 0.05 mm GD&T ntlong ea pompo ea piston ea 320 mm — le ho e hlakola kamora tlhahlobo ea sehlooho sa pele.
Ha re tsamaise colloidal silica casting joalo ka mohala o ikemetseng. E kopantsoe le machining a CNC ka mokhoa o nepahetseng ka mokhoa o le mong oa ho sebetsa: lahlela geometry ea mantlha, libaka tsa ho tiisa ka mochini le liforomo tsa likhoele, ebe u sebelisa kalafo ea mocheso e laoloang * ntle le ho qhekella *. Ha ho li-handoffs. Ha ho boitsebiso bo bocha. Karolo e 'ngoe le e' ngoe e na le ID ea lotho e kentsoeng ka laser e hokahanyang le li-cert tsa thepa e tala, li-logs tsa likhetla, lichate tsa sebōpi, le litlaleho tsa ho qetela tsa CMM.
Ho kopanya hona ho rarolla ntlha ea 'nete ea bohloko: warpage ka li-castings tsa tšepe tse phahameng tsa alloy. Moreki o kile a re tlisetsa setopo sa valve sa tšepe se sothehileng ka 0.18 mm ka mor'a ho imolla khatello ea maikutlo-hobane mofani oa bona o lahlela, o rometsoe, 'me o lumella moreki ho sebetsana le phekolo ea mocheso ka thoko. Re ile ra sebelisa phepelo ea mofuta o tšoanang oa T800, empa ra tšoara karolo ka seboping sa rona sa vacuum hang ka mor'a ho sisinyeha. Ho khopama ho qetela: 0.023 mm. Eseng boselamose. E sa tsoa laoloa nalane ea mocheso — le beng ba ts'ebetso e felletseng.
Ke eng e etsang hore feme ea 'nete ea colloidal silica Investment casting e fapane
Mabenkele a mangata a ipitsa "lifektheri tsa ho kenya chelete." Ke ba fokolang ba nang le sebopeho sa colloidal silica slurry, li-protocol tsa ho omisa likhetla, le li-profiles tsa dewaxing tse hlalosang katleho ka li-superalloys. Ho QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., re lekanya viscosity beke le beke re sebelisa li-viscometer tsa Brookfield, re beha leihlo pH ea ho hoholeha ka nako ea nnete, 'me re hana sehlopha sefe kapa sefe sa slurry kantle ho 9.2–9.6 pH-leha se shebahala se nepahetse. Hobaneng? Hobane pH e fetoha e fetola bokhoni ba silika ea zeta, e fetolang letsoalo la khetla, ho kenella ha metsi, 'me qetellong, ho hlaka holimo (Ra) likarolong tse felileng. Re bone Ra tlola ho tloha ho 1.8 µm ho ea ho 4.3 µm ha pH e hoholeha ho ea ho 9.8.
Re boetse re nka ho thunya likhetla e le tšepe—eseng feela ka letsopa. Li-kilns tsa rona li phalla ho ≤60 ° C / hora ho fihlela ho 1050 ° C, tšoara metsotso ea 90, ebe u pholile ho ≤40 ° C / hora. Potoloho eo e liehang e thibela microcracking likarolong tse teteaneng tsa cobalt-nickel castings. OEM e le 'ngoe ea pompe ea Europe e ile ea fetohela ho rona kamora hore barekisi ba babeli ba pele ba fane ka li-impeller hubs tse senyehileng tsa AMS 5387. Tlhahlobo ea sesosa sa bona e bonts'itse ho robeha ha mocheso oa mocheso ho tloha ho li-shell-to-metal interfaces. Boemo ba rona ba ho thunya bo ba felisitse. Eseng ka ho fetola motsoako—empa ka ho hlompha tsela eo khetla e hemang ka eona.
- Lisebelisoa tse tala tse netefalitsoeng feela - khoele e 'ngoe le e' ngoe e ka lateloang ho tlaleha tlhahlobo ea leloala
- Ha ho na khetla e entsoeng ka subcontracted kapa dewaxing-100% taolo ea ts'ebetso ea ka tlung
- Tlhahlobo ea moralo oa GD&T-pele: re tšoaea li-angles tse ngotsoeng ka tlase ho 0.5° pele lisebelisoa li qala
- Netefatso ea ho qetela ho li-profilometer tsa optical-eseng licheke tsa pono feela
Lisebelisoa tsa 'nete tsa lefats'e moo colloidal silica casting e bonts'ang hore ha e khonehe
Li-valve tsa khatello bakeng sa mefuta e mengata ea oli le khase ea lebopong li hloka ts'ebetso e sa duleng ho -46°C ho isa +121°C. Ho lahlela lehlabathe ha ho khone ho boloka setulo sa 0.02 mm se hlokahalang. Mathata a tloaelehileng a ho lahla matsete le boima ba mocheso oa matlo a ASTM A494 M35-1. Colloidal silica e etsa ka bobeli: mamello e tiileng *le* bots'epehi bo sa tsitsang ho pholletsa le likhahla tse feteletseng tsa mocheso.
Haufinyane tjena re hlahisitse li-roller tsa "centre shaft roller" bakeng sa li-winch tsa likoloi tsa boenjiniere - likarolo tse nang le 220 mm OD, 45 mm botenya ba lebota, le geometry ea kahare ea spline. Moreki o ne a hloka ho thatafala ≥58 HRC *ka karolo*, eseng feela ho thatafalloa. Colloidal silica e nolofalitse botenya ba khetla e ts'oanang, litekanyetso tse tsitsitseng tsa ho tiisa, le zero porosity sebakeng sa bohlokoa sa ho jara moroalo. Nako ea ho sebetsa e theohile ka 37% khahlano le likheo tsa lehlabathe hobane re fane ka sebopeho se haufi-ufi ka kabo ea thepa e lebelletsoeng esale pele.
Linyeoe tse ling tse netefalitsoeng tsa tšebeliso li kenyelletsa:
- Li-nozzles tsa alloy tsa cobalt bakeng sa lipompo tsa slurry tsa lebelo le phahameng (T800 grade, 62-65 HRC)
- Metheo ea pompo e hlokang ho batalla ≤0.08 mm ho feta bolelele ba 850 mm
- Bajari ba melamu ea piston e sa tloaelehang ba nang le likanale tse kenyellelitsoeng tse pholileng-tse entsoeng, eseng tse cheselitsoeng
Ho khetha feme ea hau ea colloidal silica Investment casting ha e bue ka bokhoni-e mabapi le bokhoni
Haeba karolo ea hau e hloka AMS 5387, T800, kapa UNS R30005-'me e tlameha ho pholoha 10,000+ khatello ea lipotoloho ntle le ho qalisoa ha microcrack-o hloka ho feta setsi sa motheo. U hloka molekane ea tšoarang silica ea colloidal eseng joalo ka binder, empa e le phetoho ea metallurgical. Ke mang ea netefatsang matla a khetla ka liteko tsa compression tsa ASTM C133-eseng feela tlhahlobo ea pono. Ke mang ea hokahanyang phoso e 'ngoe le e 'ngoe ea ho lahla le phetoho e itseng ea paramethara: lilemo tse slurry, sekhahla sa dewaxing, kapa mongobo o teng nakong ea ho qoelisoa.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. e sebetsa ka tsela eo-eseng hobane e le bonolo, empa hobane likarolo tsa bohlokoahali li siea sebaka sa menahano. Re phatlalatsa lifensetere tsa rona tsa colloidal silica process. Re arolelana data ea shell density le bareki. Re tlohella baenjiniere hore ba hlahlobe lits'oants'o tsa rona tsa CMM. Ho pepeseha hoo ha se ho bapatsa. Ke mokhoa oo u netefatsang hore "fektheri ea colloidal silica investment casting" pampiring e ts'oana le se sebetsang mokatong oa lebenkele.
Bakeng sa likarolo tsa tšepe tse nepahetseng moo ho hlōleha e seng khetho, fektheri e nepahetseng ha e fane feela ka tšepe. E fana ka kholiseho.
