Tšepe e sa hloekang ha e hanele mafome feela—e hanela ho sekisetsa. Ha ntlo ea valve ea hydraulic e tlameha ho tšoara 420 bar ntle le micro-leakage, ha cylinder ea pompo e potoloha ka 3,600 rpm tlas'a slurry ea abrasive, kapa ha winch shaft e lebōpong la leoatle e mamella moholi oa letsoai le cyclic torsion ka lilemo tse 15 - ho nepahala feela. ho lahla tshepe e sa hloekang e fana ka botšepehi ba metallurgical le botšepehi bo hlokahalang.
Re se re kentse lisebelisoa tse fetang 12,000 tsa tšepe e sa hloekang ho tloha ka 2018-e seng joalo ka likheo tse tloaelehileng, empa e le likopano tse sebetsang tse nang le li-callouts tsa GD&T tse tiileng ho feta ± 0.02 mm, bokaholimo bo fihla ho Ra 0.8 µm, 'me ho na le mohlala o felletseng oa mocheso ho isa tlalehong ea tlhahlobo ea ho qetela. Tlhahisong ea 'nete, re bone bareki ba hana likarolo eseng bakeng sa porosity, empa hobane ho kheloha ha 0.05 mm ka flange flatness ho bakile ho phatloha ha gasket nakong ea ts'ebetso ea tšimo. Ke ka lebaka leo ho lahlela tšepe e sa hloekang ha se taba ea ho tšela tšepe-e mabapi le ho laola kinetics ea solidification, ho laola ho fokotseha ha interdendritic, le ho hokahanya phallo ea lijo-thollo le litsela tsa mojaro pele ladle ea pele e kenngoa.
Hobaneng ha Investment Casting e Hlōla bakeng sa Geometry ea tšepe e se nang tšepe e rarahaneng
Ho lahla lehlabathe ho sebetsana le matlo a maholo le likarolo tse teteaneng-empa bakeng sa li-valve tsa khatello ea marako a tšesaane, li-multi-port manifolds, kapa li-turbine blade carriers, ho kenya chelete ho laola. Ts'ebetso ea eona ea khetla ea ceramic e nka likarolo tse ntle joalo ka likhopo tsa 0.3 mm le mamello ho fihla ho CT4 ho latela ISO 8062. Re tloaetse ho lahlela CF8M (ASTM A351) le F316L (UNS S31603) likarolong tse nang le botenya ba lebota ka tlase ho 2.5 mm le likarolo tse fetang 12: 1 ho tloha mocheng o tiileng oa moruo.
Empa katleho e ipapisitse le lintho tse tharo tseo e seng tsa lipuisano:
- Moralo oa mohlala o lebelletseng ho honyela ha mocheso- eseng feela ho fokotseha ha mela (1.8-2.2% bakeng sa 316), empa ho sotha ha anisotropic ho pholletsa le li-fillets le li-cores;
- Boemo ba ho thunya ba likhetla bo hlophisitsoeng ho chemistry ea alloy-limaraka tse holimo tsa chromium/nickel li hloka hore dewaxie butle le ho futhumatsa nako e telele ho qoba ho nka khabone;
- Taolo ea mocheso ka har'a ±15°C-e chesang haholo e mema macrosegregation; ho bata haholo ho baka ho koala ha serame ho limathi tse ka tlase ho 4 mm ka bophara.
Moreki e mong oa lebaleng la oli la Amerika Leboea o tlohile ho tloha lehlabatheng la F22 ho ea ho CF8M ea matsete bakeng sa likopano tsa 'mele. Sekhahla sa bona sa ho hloleha se theohile ho tloha ho 7.3% ho ea ho 0.4% - eseng ka lebaka la tšepe e ntlafetseng, empa hobane ts'ebetso ea lichelete e ile ea felisa liphoso tsa mantlha tse ileng tsa senya botšepehi ba moeli oa khatello.
Theko e Patehileng ea "Standard" Stainless Steel Grades
CF8, CF8M, CF3, CF3M—tsena ha li fetohe. Re bone lienjineri li hlakisa CF8 bakeng sa mokotla oa pompo ea metsi a leoatle, empa ho sibolla kutu ka mor'a likhoeli tse 14. Hobaneng? CF8 e na le ≤0.08% carbon mme ha e na molybdenum. Libakeng tse ruileng ka chloride, PREN ea eona (Pitting Resistance Equivalent Number) e lutse ho 18-20. CF3M, e nang le 2.0-3.0% Mo le carbon e tlaase, e sutumelletsa PREN ho 25-28-e leng phapang ea makhaola-khang.
Khetho ea thepa ha e theohe. E ea sebetsa:
- F304L: E amohetsoe bakeng sa li-conveyor tsa boemo ba lijo—eseng bakeng sa tšebeletso ea khase e bolila ka holimo ho 60 ° C;
- F316L: Bonyane bakeng sa mefuta e mengata ea hydraulic offshore-empa feela haeba tharollo-annealed le passivated post-cast;
- CA6NM (ASTM A995 Gr. 4A): E hlokehang bakeng sa li-impellers tsa metsi a leoatle a lebelo le phahameng-ea eona 4% Ni + 13% Cr + 0.05% N e fana ka matla a mokhathala > 720 MPa.
Re netefatsa mocheso o mong le o mong ka PMI (Positive Material Identification) 'me re boloka litlaleho tsa tlhahlobo ea leloala tse bontšang litaba tsa 'nete tsa Cr, Ni, Mo, le N—eseng feela "ho kopana le ASTM." Hobane sehlopha se netefalitsoeng ho F316L se ntse se ka fokotseha haeba naetrojene e le 0.03% sebakeng sa 0.06%.
Ho tloha ho Casting ho ea ho Mosebetsi: Hobaneng ha Khokahano e Otlolohileng e le Bohlokoa
Ho lahla tšepe e sa hloekang ha ho fele ha karolo e pholile. Libaka tsa as-cast li na le micro-porosity, residual stresses, le oxide scale-ha li amohelehe bakeng sa ho tiisa ka matla kapa ho pota-pota. Ke hona moo ho kopanngoa ho otlolohileng ho fetohang qeto.
Setsing sa rona sa Qingdao, tšepe e 'ngoe le e 'ngoe e sa hloekang e etsoa:
- Phekolo ea mocheso- tharollo ea annealing ho 1040-1120 ° C e lateloa ke ho tima metsi, e tiisitsoeng ka 'mapa oa thermocouple;
- Mochini- litsing tsa 5-axis CNC tse tšoereng boemo ba 'nete ka har'a 0.01 mm ho libore tsa Ø12 mm;
- Ntlafatso ea bokaholimo- electropolishing bakeng sa phokotso ea Ra le ho nchafatsa lera, kapa ho thunya bakeng sa khatello ea maikutlo libakeng tse mahlonoko tsa mokhathala.
Koloi ea boenjiniere ea Jeremane OEM e ne e hloka matlo a silindara a pompo ea piston a nang le concentricity <0.015 limilimithara pakeng tsa bore le sefahleho se ntseng se phahama. Ho lahlela lehlabathe feela ho ne ho sa khone ho fana ka eona. Ts'ebetso ea rona e nyalisitsoeng - matsete a etsang hore ho be le maemo a thata, 'me a khathatsehe 'me a hlophisoe ka mokhoa o le mong - o fokotsa sekhechana ka 62% 'me a lelefatsa bophelo ba ts'ebeletso ho tloha ho lihora tse 8,000 ho isa ho tse 14,500.
Ha o hloka ho lahla tshepe e sa hloekang e sebetsang - eseng feela ho feta tlhahlobo - o hloka balekane ba entseng meralo ea ho tiisa cobalt ea AMS 5387 cobalt alloys, profil e netefalitsoeng ea mocheso bakeng sa casings ea pompo e thehiloeng ho T800, 'me ba latetse 100% ea mocheso o tala o khutlelang seboping sa EAF. QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. e haha bokhoni boo karolong e 'ngoe le e' ngoe-e seng joalo ka tleleime, empa e le tatellano e ngotsoeng, e ka hlahlojoang. Precision ha e eketsoe qetellong. E entsoe ka lijo-thollo tsa pele.
