Porosity e ama haholo boleng le ho tšoarella haaluminium diecasting. Boithuto bo senola hore boleng ba elongation bo theoha libakeng tse nang le tšenyo e patiloeng, e hokahanyang porosity le ts'ebetso e fokotsehileng ea lisebelisoalihlahisoa tsa aluminium die casting. Phapang ea thepa ea mochini, e totobalitsoeng ke kabo ea Weibull, e totobatsa taba ena. Moralo o nepahetseng oaaluminium die casting hloboe netefatsa phallo e bonolo ea thepa le ho fokotsa moferefere nakong eamokhoa oa ho lahla aluminium, e leng bohlokoa bakeng sa ho fumana litholoana tse ntle ho tsoa hobaetsi ba aluminium die casting.
Lintlha tsa bohlokoa
- Moqapi o motle oa hloboe thusa thepa ho phalla hantle. Sena se thibela moferefere 'me se thibela khase hore e se ke ea tšoasoa, e leng se fokotsang porosity.
- Sistimi e nepahetseng ea moeatlohella likhase tse qabelletsoeng hore li phonyohe. Sena se etsa hore aluminium die castings e be betere ka boleng.
- Ho laola lebelo la ho pholisa ho thusa tšepe ho tiea ka ho lekana. Sena se fokotsa shrinkage porosity mme se etsa hore li-castings li be matla.
Ho utloisisa Porosity ho Aluminium Die Casting
porosity ke eng?
Porosity e bolela ho ba teng ha masoba a manyane, likheo, kapa mapetsong ka har'a aluminium e tiileng. Liphoso tsena li ka fapana ka boholo, ho tloha ho li-pores tse nyenyane ho ea ho tse kholoanyane, 'me li ka' na tsa se ke tsa bonahala ka holimo kamehla. Porosity hangata e theha nakong eaaluminium diecastingmokgoa ka baka la digase tse qabelletsoeng kapa ho phodisa ho sa lekana. E fokotsa bots'epehi ba sebopeho sa karolo mme e ka lebisa mathateng a joalo ka kutu, ho lutla, kapa ho hloleha ha mochini.
Baenjiniere ba lekanya porosity ba sebelisa liparamente tse 'maloa:
- Palo ea li-pores: Palo eohle ea li-pores ka har'a molumo o itseng.
- Boholo bo lumelletsoeng: Boholo bo lumellehang bo boholo bakeng sa pore ka 'ngoe.
- Kakaretso ea peresente ea molumo: Peresente ea molumo oa karolo e nang le masoba.
Mefuta ea porosity ka aluminium die casting
Porosity ho aluminium die casting e ka aroloa ka mefuta e meraro ea mantlha:
- Porosity e Foufetseng: Mofuta ona o qala holimo 'me o fella ka har'a' mele oa ho lahla. Hangata e lebisa ho kutu ha nako e ntse e ea.
- Ka Porosity: Ho tloha ka lehlakoreng le leng la ho latsoa ho ea ho le leng, mofuta ona o hlahisa tsela e lutlang 'me o senya botšepehi ba karolo.
- Porosity e Koaletsoeng ka Botlalo: E fupere ka ho feletseng ka har'a ho lahla, mofuta ona o lula o patiloe ho fihlela o pepesitsoe nakong ea machining.
Lisosa tsa porosity li kenyelletsa ho kenngoa ha khase nakong ea ho tiisa le ho fokotseha ka lebaka la ho pholile ho sa tšoaneng. Ho se tsoe moea hantle, ho tlotsoa ka mafura ho feteletseng, le mefokolo ea moralo hangata li tlatsetsa litabeng tsena.
Liphello tsa porosity ho boleng ba ho lahla le ts'ebetso
Porosity e ama haholo boleng le ts'ebetso ea lifensetere tsa aluminium. Liphuputso li bonts'a hore maemo a phahameng a porosity a fokotsa lebelo la ho phatlalatsoa ha maqhubu a ultrasonic, a bontšang matla a fokolang a thepa. Litšoantšo tsa X-ray li tiisa liphuputso tsena, li totobatsa kamano pakeng tsa porosity le ho fokotsehaboleng ba ho lahla.
Ho feta moo, porosity e ama ho tšoarella ha likarolo tsa aluminium die cast. Ka mohlala, ho eketseha ha lebelo la ho tšela nakong ea ts'ebetso ea ho lahla ho ka fokotsa porosity ho fihlela ho 98.7%, ho ntlafatsa boleng ba kakaretso ea sehlahisoa sa ho qetela. Baetsi ba tlameha ho sebetsana le porosity ho netefatsa likarolo tse tšepahalang le tse tšoarellang nako e telele.
Kamoo Mold Design e Thibelang Porosity
Tšusumetso ea sebopeho sa hlobo ho phallo ea thepa le ho tiisa
Moqapi oa hloboe ama ka kotloloho tsela eo aluminium e qhibilihisitsoeng e phallang le ho tiea ka eona nakong ea ts'ebetso ea ho lahla. Mefuta e entsoeng hantle e tiisa hore thepa e phalla hantle, e fokotsa moferefere le ho thibela moea o kenang. Sena se fokotsa ho thehoa ha porosity ea khase. Ntle le moo, geometry ea hlobo e ntlafalitsoeng e khothaletsa ho tiea ho ts'oanang, e thusang ho qoba shrinkage porosity e bakiloeng ke ho bata ho sa tšoaneng.
Lipatlisiso li totobatsa bohlokoa ba sebopeho sa hlobo ho ntlafatsa phallo ea thepa. Mohlala, liphuputso li bonts'a hore lintlha tse kang ho roala le mocheso oa ho tšela li ama metsi haholo. Tafole e ka tlase e akaretsa liphetho tsa liteko tse fapaneng:
| Ithute | Liphuputso |
|---|---|
| Jafari et al. | Bolelele ba metsi bo fetohile ho tloha ho 1 ho isa ho 8 mm ka botenya le ntle le ho roala; ho roala ho fokotsehile ha metsi. |
| Aslandoğan | Mocheso oa ho tšela e ne e le ntho ea bohlokoa ka ho fetisisa e amang metsi ka tšepe ea AISI 1040. |
| Fras et al. | Keketseho ea metsi a tšepe ea tšepe e nang le mocheso o phahameng oa ho tšela. |
| Yang et al. | Likahare tse phahameng tsa Si le Ni tse ka har'a li-alloys tsa aluminium li ile tsa eketsa bolelele ba mokelikeli ka har'a hlobo ea spiral. |
Liphetho tsa ketsiso ea phallo li boetse li bontša kamoo moetso oa hlobo o susumetsang ho tiea ha lintho. Ka mohlala, liteko tsa x-ray tsa nako ea sebele li senola kamoo aluminium e qhibilihisitsoeng e tlatsang hlobo butle-butle ka nako. Lipapiso tsena li bontša bohlokoa ba phallo ea laminar ho fokotsa moferefere le ho netefatsa ho tiea ho tsitsitseng.
Bohlokoa ba ho kenya moea le ho ntša moea
Sistimi ea ho kenya moeabapala karolo ea bohlokoa ho thibela porosity ho aluminium die casting. Nakong ea ts'ebetso ea ho lahla, moea o koaletsoeng le likhase li ka baka likheo ka har'a thepa. Likanale tse nepahetseng tsa moea li lumella likhase tsena hore li tsoe, e leng ho tiisang hore ha ho na sekoli.
Ho kenya moea ka nepo ho hloka hore ho behoe likanale ka hloko ho tataisa moea ho tsoa mokoting oa hlobo. Mekhoa ea ho kenya moea e sa sebetseng hantle e ka lebisa ho porosity ea khase, e senyang botšepehi ba sebopeho sa sehlahisoa sa ho qetela. Baetsi ba tlameha ho etelletsa pele ho kenya moea nakong ea moralo oa hlobo ho fihlela sephetho sa boleng bo holimo.
Karolo ea taolo ea sekhahla sa pholiso ho fokotsa shrinkage porosity
Taolo ea sekhahla sa ho pholisa e bohlokoa bakeng sa ho fokotsa shrinkage porosity ho aluminium die casting. Litefiso tse potlakileng tsa ho pholisa li khothaletsa ho tiea ho tšoanang, ho fokotsa monyetla oa ho theha likheo ka lebaka la ho honyela ho sa lekanang. Liphuputso li bontšitse hore ho ntlafatsa litekanyetso tsa ho pholisa ho ka fokotsa haholo porosity ea micro-shrinkage.
- Ho pholile ka potlako moeling oa ingot ho fella ka li-micro-shrinkage pores tse fokolang le tse nyenyane ha li bapisoa le bohareng.
- Phuputso e entsoeng ka polyethylene e phahameng haholo (HDPE) e bonts'itse hore ho ntlafatsa maemo a ho pholisa le sebopeho sa hlobo ho fokolitse li-micro-voids, e leng se lebisang ho mamello e matla le boleng bo ntlafetseng.
Ka ho kenyelletsa mekhoa ea ho laola mocheso ho moralo oa hlobo, bahlahisi ba ka laola litekanyetso tsa ho pholisa ka katleho. Sena se tiisa ho tiea ho tsitsitseng le ho fokotsa kotsi ea shrinkage porosity.
Melao-motheo ea Bohlokoa ea Mold Design bakeng sa ho Fokotsa Porosity
Moralo o nepahetseng oa ho kenya le ho tsamaisa sistimi
Sistimi e hlophisitsoeng hantle ea li-gating le semathi e netefatsa phallo e boreleli ea thepa nakong ea ho lahla ha aluminium. Phallo e nepahetseng e fokotsa moferefere, e leng ho fokotsa ho kenngoa ha khase le porosity. Mekhahlelo ea bohlokoa joalo ka sekhahla sa phallo, mocheso o tšollang, le boholo ba semathi li susumetsa haholo phokotso ea porosity. Tafole e ka tlase e totobatsa litlamorao tsa bona:
| Paramethara | Phello ho Phokotso ea Porosity | Mokhoa oa lipalo-palo o sebelisitsoeng |
|---|---|---|
| Sekhahla sa Phallo | Bohlokoa | ANOVA |
| Mocheso o Tletseng | Bohlokoa | ANOVA |
| Boholo ba Semathi | Bohlokoa | ANOVA |
Ka ho ntlafatsa liparamente tsena, bahlahisi ba ka fihlela li-castings tse se nang sekoli ka bots'epehi bo ntlafalitsoeng ba sebopeho.
Kenyelletso e sebetsang ea mocha oa moea
Likanale tsa moea li bapala karolo ea bohlokoa ho lumella likhase tse qabeletsoeng ho tsoa mokoting oa hlobo. Ha moea o sa bulehe hantle, likhase li ka etsa li-voids, tse lebisang ho porosity.Ho kenya moea ka katlehoe fokotsa moferefere 'me e etsa hore ho be le mokhoa o bonolo oa ho lahlela. Tafole e latelang e bonts'a phello ea moralo oa ho kenya moea liphethong tsa ho lahla:
| Tlhaloso ea Bopaki | Tšusumetso ho Liphetho tsa ho Lahlela |
|---|---|
| Moralo o sebetsang hantle oa heke le moea o kenang o bohlokoa bakeng sa ho laola phallo ea tšepe le ho lumella likhase ho tsoa mokoting oa hlobo. | E fokotsa moferefere, e thibela bokooa bo kang porosity. |
| Likanale tse behiloeng ka nepo li thusa likhase tse koaletsoeng ho tsoa. | E fokotsa ho hlaha ha porosity le litaba tse amanang le tsona. |
Ho beoa ka leano la likanale tsa moea ho netefatsa hore lisebelisoa tsa aluminium tsa boleng bo holimo tse nang le mefokolo e fokolang.
Taolo ea mocheso bakeng sa ho laola litekanyetso tsa ho pholisa
Ho laola litekanyetso tsa ho pholisa ho bohlokoa bakeng sa ho fokotsa shrinkage porosity. Ho pholisa ka potlako ho khothalletsa ho tiea ho tšoanang, ho thibela likheo tse bakoang ke ho fokotseha ho sa tšoaneng. Ho kenyelletsa litsamaiso tsa taolo ea mocheso ho moralo oa hlobo ho netefatsa hore ho na le pholile e tsitsitseng ho pholletsa le ho lahlela. Liphuputso li bontša hore ho pholisa ka potlako metseng ea li-castings ho fokotsa li-micro-shrinkage pores ha li bapisoa le setsi. Baetsi ba ka fumana mamello e matla le boleng bo ntlafetseng ka ho ntlafatsa litekanyetso tsa ho pholisa.
Ho netefatsa phallo ea thepa e ts'oanang
Phallo ea thepa e tšoanang e bohlokoa bakeng sa ho fokotsa porosity ho aluminium die casting. Phallo e sa leka-lekaneng e ka baka moferefere, e lebisang ho koaleheng ha khase le liphoso. Liphuputso tsa liteko li senola hore lintlha tse kang khatello ea plunger le mocheso oa aluminium oa metsi li susumetsa porosity haholo. Maikutlo a bohlokoa a kenyelletsa:
- Squeeze castings e bonts'a maemo a porosity a manyane habeli ho feta gravity die castings.
- Khatello e phahameng nakong ea ho tiisa ho eketsa bongata ba lijo-thollo, ho fokotsa porosity.
- Ho hatella ho fokotsa ho fokotseha ha porosity karolong e bohareng ea ho lahlela.
Ka ho netefatsa phallo e ts'oanang, bahlahisi ba ka hlahisa li-castings ka boleng bo tsitsitseng le ho tšoarella.
Malebela a ka Etsahalang bakeng sa Ntlafatso ea Mold Design
Sebelisa lisebelisoa tse tsoetseng pele tsa papiso bakeng sa moralo oa hlobo
Lisebelisoa tse tsoetseng pele tsa ketsisobapala karolo ea bohlokoa ho ntlafatseng moralo oa hlobo oa aluminium die casting. Lisebelisoa tsena li lumella bahlahisi ho bolela esale pele le ho rarolla mathata a ka bang teng pele tlhahiso e qala. Ka ho etsisa phallo ea lintho tse bonahalang, ho tiisa, le litekanyetso tsa ho pholisa, baenjiniere ba ka tseba libaka tse nang le porosity le ho etsa liphetoho tse hlokahalang.
- Simulation App e thusa ho etsa liteko tse potlakileng tsa litlhophiso tse fapaneng tsa tlhahiso, ho nolofatsa ts'ebetso ea ntlafatso.
- Software e tsoetseng pele e fokotsa liphoso lits'ebetsong tsa ho lahla, ho ntlafatsa ts'ebetso le boleng.
- Moetso oa predictive o kopantsoeng le tlhahlobo ea lintlha tse lekanyelitsoeng o sebetsana ka katleho le bofokoli ba ho etsa lintho.
- Lithuto tsa mohlala li totobatsa ts'ebeliso ea papiso ho ntlafatso ea moralo oa phepelo, ho fokotsa bofokoli ba ho putlama.
Lisebelisoa tsa ho etsisa ha li matlafatse ts'epahalo ea ts'ebetso feela empa hape li fokotsa litšenyehelo tsa tlhahiso ka ho fokotsa mekhoa ea liteko le liphoso.
Kamehla hlokomela le ho hlahloba hlobo
Tlhokomelo ea kamehla le tlhahlobo ea hlobo ke ea bohlokoa bakeng sa ho fokotsa porosity le ho netefatsa boleng bo tsitsitseng ba ho lahlela. Licheke tsa kamehla li thusa ho tseba ho felloa ke matla, tšenyo, kapa litšitiso tsa likanale tse ka bakang bofokoli.
| Mofuta oa Ntlafatso | Quantifiable Sephetho |
|---|---|
| Maemo a Fokotsehileng a Porosity | Phokotso e kholo ea porosity ea khase e bonoang ka tlhahlobo ea X-ray. |
| Thepa e Ntlafetseng ea Mechini | Keketseho ea 15% ea matla a tsitsipano, e kopanang le maemo a khatello ea khatello. |
| Litefiso tse tlase tsa Scrap | Phokotso ea 25% ea sekhahla sa sekhechana ka lebaka la bofokoli ba porosity, e ntlafatsang katleho ea tlhahiso. |
| Ho Felisa Likheo Tsa Shrinkage | Litlhahlobo tsa metallographic li bonts'itse likheo tse fokotsehileng, tse lebisang ho microstructure e teteaneng. |
| Keketseho ea Karolo e Tšepahalang | E ntlafalitse ho hanyetsa mokhathala le bokhoni bo phahameng ba ho jara moroalo bakeng sa lisebelisoa tsa sefofane. |
| Tšebeliso ea Litšenyehelo | Phokotso ea 20% ea litšenyehelo tsa tlhahiso ka lebaka la bofokoli bo fokotsehileng le ho sebetsa bocha. |
Ka ho kenya ts'ebetsong kemiso ea kamehla ea tlhokomelo, bahlahisi ba ka ntlafatsa ho tšepahala le ho tšoarella ha likarolo tsa aluminium die cast.
Sebelisana le baqapi ba hlobo ba nang le boiphihlelo
Baqapi ba hlobo ba nang le phihlelo ba tlisa tsebo ea bohlokoa tafoleng. Tsebo ea bona ea boits'oaro ba lintho tse bonahalang, lits'ebetso tsa ho kenya moea, le taolo ea sekhahla sa ho pholisa li netefatsa ts'ebetso e nepahetseng ea hlobo. Ho sebelisana 'moho le litsebi tse nang le tsebo ho thusa bahlahisi ho sebetsana le mathata a rarahaneng, a kang ho fokotsa porosity le ho finyella phallo ea thepa e tšoanang. Tšebelisano-'moho ena hangata e lebisa ho litharollo tse ncha le lipapali tsa boleng bo holimo.
Lekola le ho ntlafatsa meralo ka prototyping
Prototyping e lumella bahlahisi ho lekola meralo ea hlobo tlasa maemo a nnete a lefats'e. Ka ho sekaseka ts'ebetso ea li-prototypes, baenjiniere ba ka tseba le ho rarolla mathata pele ho tlhahiso e felletseng.
- Prototyping e fokotsa linako tsa potoloho le litšenyehelo tsa ts'ebeliso.
- Matla a matla a ntlafala, a bonts'a ts'ebetso e ntle ea hlobo.
- Litlhophiso tse ntlafalitsoeng tsa stem inlet le ho fokotseha ha molumo oa sefuba ho thusa ho fokotsa porosity.
Ho etsa liteko le ho hloekisa meralo ka prototyping ho netefatsa hore hlobo ea ho qetela e fana ka sephetho se ts'oanang mme e fihlela maemo a boleng.
Laola likarolo tsa ente ho fokotsa moferefere
Mekhahlelo ea ente, joalo ka khatello, lebelo le mocheso, li susumetsa haholo phallo ea thepa nakong ea ho lahla ha aluminium. Taolo e nepahetseng ea mekhahlelo ena e fokotsa moferefere, e fokotsa kotsi ea ho kenngoa ha khase le porosity. Ka mohlala, ho boloka lebelo le tsitsitseng la ente ho netefatsa phallo ea laminar, ha maemo a nepahetseng a mocheso a thibela ho tiisa pele ho nako. Baetsi ba lokela ho beha leihlo le ho lokisa liparamente tsena ho fihlela mehala e se nang sekoli.
Khetha lisebelisoa tsa boleng bo holimo le li-alloys
Khetho ea lisebelisoa tsa die le li-alloys ka kotloloho e ama boleng ba likarolo tsa aluminium die cast. Li-alloys tse hloekileng li fokotsa ho thehoa ha khase, ha lisebelisoa tsa ho shoa tse tšoarellang li mamella ho sebelisoa khafetsa ntle le ho holofala.
| Ntlha ea Bohlokoa | Tšusumetso ho Porosity |
|---|---|
| Khetho ea Alloy | Li-alloys tse hloekileng li fokotsa sebopeho sa khase, li fokotsa porosity. |
| Taolo ea Mocheso | Ho boloka mocheso o nepahetseng ho thibela sebopeho sa bubble ka tšepe e qhibilihisitsoeng. |
| Taolo ea Khatello | Khatello e phahameng nakong ea ho tiisa e thusa ho tlatsa li-voids, ho fokotsa shrinkage porosity. |
| Moqapi oa Mold | Ho kenya moea ka tsela e nepahetseng le ho qoba likhutlo tse bohale ho thibela ho kenngoa ha khase le ho fokotseha. |
Ho khetha lisebelisoa tse phahameng ho netefatsa ts'ebetso e ntle ea ho lahla le ho fokotsa menyetla ea liphoso.
Sebelisa lisebelisoa tse hloekisang le tse senyang khase ho fokotsa khase
Lisebelisoa tse hloekisang le tse tlosang khase li bapala karolo ea bohlokoa ho theoheng ha khase ka aluminium e qhibilihisitsoeng. Mahlaseli ana a tlosa litšila, lipululana le li-oxide ho tloha holim'a metsi, ho thibela khase hore e se ke ea kena hape.
- Lisebelisoa tsa boleng bo phahameng ba ho hloekisa le ho tlosa khase li fokotsa haholo khase.
- Ho tlosoa ha scum le li-bubble ka nako ho netefatsa ts'ebetso e hloekileng ea ho lahlela.
- Tšebeliso e sebetsang ea lisebelisoa tsena e ntlafatsa sebopeho sa likarolo tsa aluminium tsa die cast.
Ho kenyelletsa lisebelisoa tse hloekisang le tse senyang khase ts'ebetsong ea tlhahiso ho fella ka li-castings tse nang le mefokolo e fokolang le ho ntlafala ho tšoarella.
Porosity e phephetsa aluminium die casting, empa moralo o nepahetseng oa hlobo o fana ka tharollo e sebetsang. Mekhoa e joalo ka likanale tse pholileng tsa conformal le high-vacuum die casting (HVDC) e fokotsa porosity haholo.
| Theknoloji | Molemo |
|---|---|
| Mecha ea Pholiso e Tloaelehileng | E fokotsa khatello ea mocheso le ho khopama, e lebisang ho nepahala ho holimo. |
| High-Vacuum Die Casting (HVDC) | E fokotsa ho kenella ha moea le khase, e bakang likarolo tse nang le thepa e ntlafalitsoeng ea mochini le ho fokotsa porosity. |
Ho khomarela melao-motheo ena ho netefatsa hore li-castings tse tšoarellang, tsa boleng bo phahameng.
LBH
Ke eng e bakang porosity ho aluminium die casting?
Porosity e etsahala ka lebaka la likhase tse koaletsoeng, ho pholisa ho sa tšoaneng, kapa ho fokotseha nakong ea ho tiisa. Moralo o fosahetseng oa hlobo le ho se tsoe moea o lekaneng hangata ho tlatsetsa tabeng ena.
Moralo oa hlobo o ntlafatsa boleng ba ho lahla joang?
Moralo o nepahetseng oa hlobo o netefatsa phallo ea thepa e boreleli, o fokotsa moferefere, hape o khothaletsa ho pholisa ho tšoanang. Lintlha tsena li fokotsa porosity le ho ntlafatsa boleng ba sebopeho sa likarolo tsa cast.
Ke hobane'ng ha ho ntša moea ho le bohlokoa ha ho etsoa hlobo?
Ho kenya moea ho lumella moea o koaletsoeng le likhase ho tsoa nakong ea ho lahlela. Sena se thibela porosity ea khase, ho netefatsa hore ha ho na sekoli le lisebelisoa tsa boleng bo holimo tsa aluminium.
Ka: haihong
email：daphne@haihongxintang.com
email：haihong@haihongxintang.com
Mohala:
Lithekiso: 0086-134 8641 8015
Tšehetso: 0086-574 8669 1714
Nako ea poso: Apr-24-2025