Porosity inokanganisa zvakanyanya kunaka uye kusimba kwealuminium die casting. Zvidzidzo zvinoratidza kuti elongation kukosha kunodonha munzvimbo dzine kukuvara kwakavanzika, kubatanidza porosity nekudzikira kwekuita kwezvinhu mukatialuminium die casting products. Kusiyanisa mumichina zvivakwa, inoratidzirwa neWeibull kugovera, inosimbisa iyi nyaya. Yakakodzera dhizaini yealuminium die casting moldinova nechokwadi chekuyerera kwezvinhu zvakapfava uye inoderedza kusagadzikana panguvaaluminium die casting process, izvo zvakakosha kuti uwane mhedzisiro yakanaka kubvaaluminium die casting vagadziri.
Key Takeaways
- Yakanaka mold designinobatsira zvinhu kufamba zvakanaka. Izvi zvinomisa mhirizhonga uye zvinoita kuti gasi risabatwa, izvo zvinoderedza porosity.
- Magadzirirwo emhepo akakodzerarega magasi akabatwa ngaapunyuke. Izvi zvinoita kuti aluminium die castings ive nani mumhando.
- Kugadzirisa kumhanya kwekutonhora kunobatsira simbi kusimba zvakaenzana. Izvi zvinoderedza shrinkage porosity uye inoita kuti makanda awedzere kusimba.
Kunzwisisa Porosity muAluminium Die Casting
Chii chinonzi porosity?
Porosity zvinoreva kuvapo kwemaburi madiki, voids, kana makatsemuka mukati mearuminiyamu yakasimba. Kusakwana uku kunogona kusiyana muhukuru, kubva ku microscopic pores kusvika kuhombe voids, uye inogona kusagara ichionekwa pamusoro. Porosity inowanzoitika panguva yekuzvitakuraaluminium die castingmaitiro nekuda kwemagasi akavharirwa kana kutonhora kusina kuenzana. Iyo inoderedza kurongeka kwechimiro chechikamu uye inogona kutungamira kune nyaya dzakaita kunge corrosion, kuvuza, kana kutadza kwemuchina.
Mainjiniya anoyera porosity vachishandisa akati wandei paramita:
- Nhamba ye pores: Huwandu hwema pores mukati mevhoriyamu chaiyo.
- Saizi yepamusoro inobvumidzwa: Iyo yakakura inobvumidzwa saizi ye pore yega yega.
- Total volume percentage: Chikamu chevhoriyamu yechikamu icho chine porous.
Mhando dze porosity mualuminium kufa casting
Porosity mualuminium die casting inogona kuiswa mumhando mitatu mikuru:
- Blind Porosity: Mhando iyi inotangira kumusoro uye inopera mukati memuviri wekukanda. Kazhinji zvinotungamirira mukuora nekufamba kwenguva.
- Kuburikidza nePorosity: Kuwedzera kubva kune rumwe rutivi rwekukanda kuenda kune rumwe, rudzi urwu runogadzira nzira yekuvuza uye inokanganisa kutendeseka kwechikamu.
- Yakavharwa Yakazara Porosity: Yakazara mukati mekukanda, iyi mhando inoramba yakavanzika kusvika yaburitswa panguva yekugadzira.
Zvinokonzera porosity zvinosanganisira kuvharirwa kwegasi panguva yekusimba uye shrinkage nekuda kwekutonhora kusina kuenzana. Kusabuda mhepo kwakashata, mafuta akawandisa, uye kukanganisa kwekugadzira zvinowanzokonzera nyaya idzi.
Mhedzisiro yeporosity pamhando yekukanda uye kuita
Porosity inonyanya kukanganisa kunaka uye kuita kwealuminium die castings. Zvidzidzo zvinoratidza kuti mazinga epamusoro eporosity anoderedza kumhanya kweiyo ultrasonic wave kupararira, zvichiratidza kusimba kwezvinhu. X-ray imaging inosimbisa izvi zvakawanikwa, zvichiratidza kuwirirana pakati peporosity uye kuderedzwakukanda quality.
Pamusoro pezvo, porosity inokanganisa kusimba kwealuminium die cast zvikamu. Semuyenzaniso, kuwedzera kudirana kumhanya panguva yekukandira kunogona kuderedza porosity kusvika 98.7%, ichivandudza huwandu hwese hwechigadzirwa chekupedzisira. Vagadziri vanofanira kugadzirisa porosity kuti vave nechokwadi chekuvimbika uye chinogara kwenguva refu zvikamu.
Sei Mold Dhizaini Inodzivirira Porosity
Kufurira kwekugadzira mold pakuyerera kwezvinhu uye kusimba
Mold designinokanganisa zvakananga kuti aluminium yakanyungudutswa inoyerera sei uye inoomesa panguva yekukanda. Molds dzakagadzirwa nemazvo dzinoita kuti zvinhu zvifambe zvakanaka, zvinoderedza mhirizhonga uye kudzivirira kupinda kwemhepo. Izvi zvinoderedza kuumbwa kwegasi porosity. Pamusoro pezvo, yakagadziridzwa mold geometry inosimudzira yunifomu kusimba, iyo inobatsira kudzivirira shrinkage porosity inokonzerwa nekusakwana kutonhora.
Tsvagiridzo inosimbisa kukosha kwekugadzira mold mukuvandudza kuyerera kwezvinhu. Semuyenzaniso, zvidzidzo zvinoratidza kuti zvinhu zvakaita sekuvhara uye tembiricha yekudurura zvakanyanya kukanganisa fluidity. Tafura iri pazasi inopfupikisa zvakawanikwa kubva mukuedza kwakasiyana-siyana:
| Kudzidza | Zvawanikwa |
|---|---|
| Jafari et al. | Fluidity hurefu hwakashanduka kubva pa1 kusvika ku8 mm ukobvu ne uye pasina coating; coating yakaderera fluidity urefu. |
| Aslandoğan | Kudurura tembiricha ndiyo yakanyanya kukosha inokanganisa fluidity muAISI 1040 simbi. |
| Fraś et al. | Kuwedzera fluidity yesimbi yakakandwa ine tembiricha yekudira yakakwirira. |
| Yang et al. | Yepamusoro Si uye Ni yemukati mune aruminiyamu alloys yakawedzera fluidity kureba mune spiral molds. |
Kuyerera kwekutevedzera mhedzisiro inoratidza kuti mold dhizaini inokanganisa sei kusimba kwezvinhu. Semuenzaniso, chaiyo-nguva x-ray kuyedza inoratidza kuti yakanyungudutswa aluminium inozadza sei mold zvishoma nezvishoma nekufamba kwenguva. Aya mafananidziro anoratidza kukosha kwekuyerera kwelaminar kuderedza mhirizhonga uye kuve nechokwadi chekusimba kunoenderana.
Kukosha kwekubuda kwemhepo uye kubuda kwemhepo
Venting systemstamba basa rakakosha mukudzivirira porosity mualuminium die casting. Munguva yekukanda maitiro, mweya wakavharirwa uye magasi anogona kugadzira voids mukati mechinhu. Nzira dzekufambisa dzakakodzera dzinobvumira magasi aya kupukunyuka, kuve nechokwadi chekukanda kusina kukanganisa.
Kupinza mhepo kunoshanda kunoda kunyatsoiswa kwenzira dzekutungamira mhepo kubva mumhango ye mold. Masisitimu ekufambisa asina kunaka anogona kutungamira kune gasi porosity, kukanganisa kutendeseka kwechigadzirwa chekupedzisira. Vagadziri vanofanirwa kukoshesa kuburitsa mukati mekugadzira mold kuti vawane mhedzisiro yemhando yepamusoro.
Basa rekudzora mwero wekutonhora mukuderedza shrinkage porosity
Kutonhodza chiyero chekudzora kwakakosha kudzikisa shrinkage porosity mualuminium die casting. Inokurumidza kutonhora mitengo inosimudzira kusimba kwakafanana, ichideredza mukana wekuumbwa kwevoids nekuda kwekusaenzana shrinkage. Zvidzidzo zvakaratidza kuti optimize kutonhora mitengo inogona kuderedza zvakanyanya micro-shrinkage porosity.
- Kukurumidza kutonhora kumucheto kweingot kunoguma kune mashoma uye madiki madiki-shrinkage pores zvichienzaniswa nepakati.
- Imwe nyaya yekudzidza pamusoro pe-high-density polyethylene (HDPE) yakaratidza kuti kugadzirisa kutonhora kwemazinga uye kugadzira mold kwakaderedza micro-voids, zvichiita kuti kushivirira kwakasimba uye kuvandudzwa kwemhando.
Nekubatanidza masisitimu ekudzora ekupisa mukugadzira mold, vagadziri vanogona kudzora mitengo yekutonhora zvinobudirira. Izvi zvinogonesa kusimba kunoenderana uye kunoderedza njodzi yeshrinkage porosity.
Misimboti Yakakosha yeMold Dhizaini Yekuderedza Porosity
Yakakodzera gating uye mumhanyi system dhizaini
Iyo yakanyatsogadzirwa gating uye mumhanyi sisitimu inovimbisa yakatsetseka yezvinhu kuyerera panguva yekukanda kwealuminium kufa. Kuyerera kwakakodzera kunoderedza mhirizhonga, iyo inoderedza gasi kupinda uye porosity. Makiyi ma paramita senge kuyerera, tembiricha yekudururira, uye saizi yemumhanyi inonyanya kupesvedzera kudzikiswa kweporosity. Tafura iri pazasi inoratidza maitiro avo:
| Parameter | Mhedzisiro paPorosity Reduction | Statistical Method Yakashandiswa |
|---|---|---|
| Flow Rate | Chinokosha | ANOVA |
| Kudira Tembiricha | Chinokosha | ANOVA |
| Mumhanyi Saizi | Chinokosha | ANOVA |
Nekukwenenzvera aya ma parameter, vagadziri vanogona kuwana hurema-isina castings nekuvandudzwa kwechimiro chekuvimbika.
Inoshanda venting chiteshi kubatanidzwa
Venting nzira dzinoita basa rakakosha mukubvumira magasi akavharirwa kuti apukunyuke kubva mugomba. Pasina mhepo yakanaka, magasi anogona kuumba voids, zvichiita kuti porosity.Kubuditsa mhepoinoderedza mhirizhonga uye inova nechokwadi chekukanda kwakatsetseka. Tafura inotevera inoratidza kukanganisa kwekugadzira venting pane zvinobuda zvekukanda:
| Tsanangudzo Yeuchapupu | Impact paKukanda Migumisiro |
|---|---|
| Inoshanda gedhi uye dhizaini yekubuda kwakakosha pakugadzirisa kuyerera kwesimbi uye kubvumira magasi kuti abude kubva mugomba refodya. | Inoderedza mhirizhonga, kudzivirira kukanganisa kwakadai seporosity. |
| Nzira dzekufambisa dzakaiswa zvine hungwaru dzinobatsira magasi akavharirwa kuti apukunyuke. | Inoderedza kuitika kweporosity uye zvine chekuita nenyaya. |
Strategic kuiswa kwematanho ekufambisa kunovimbisa emhando yepamusoro aluminium kufa castings ine hurema hushoma.
Thermal control yekutarisira kutonhora mitengo
Kudzora kutonhora mitengo kwakakosha pakudzikisa shrinkage porosity. Kukurumidza kutonhora kunokurudzira kusimba kwakafanana, kudzivirira voids inokonzerwa nekusaenzana shrinkage. Kubatanidza zvinodziya zvinodzora masisitimu mune mold dhizaini inovimbisa kutonhora kunoenderana mukukanda. Zvidzidzo zvinoratidza kuti kukurumidza kutonhora kumicheto yekukanda kunoderedza micro-shrinkage pores kana ichienzaniswa nepakati. Vagadziri vanogona kuwana kushivirira kwakasimba uye hunhu hwakavandudzwa nekugadzirisa mitengo yekutonhora.
Kuve nechokwadi chekuyerera kwezvinhu zvakafanana
Uniform zvinhu kuyerera kwakakosha kudzikamisa porosity mualuminium kufa kukanda. Kuyerera kusina kuenzana kunogona kugadzira nyonganyonga, zvichitungamira mukusungwa kwegasi uye kukanganisa. Zvakawanikwa zvekuyedza zvinoratidza kuti zvinhu zvakaita seplunger pressure uye liquid aluminium tembiricha zvinonyanya kukanganisa porosity. Zvinonyanya kucherechedzwa zvinosanganisira:
- Kusvina castings kunoratidza porosity mazinga madiki zvakapetwa kaviri pane gravity die castings.
- Kudzvinyirirwa kwepamusoro panguva yekusimba kunowedzera kuwanda kwezviyo, kuderedza porosity.
- Kudzvanya kunoderedza shrinkage porosity mukati mechikamu chekukanda.
Nekuita kuti yunifomu inoyerera, vagadziri vanogona kugadzira castings nemhando inowirirana uye kusimba.
Actionable Mazano eKugadzirisa Mold Dhizaini
Shandisa advanced simulation maturusi ekugadzira mold
Advanced simulation zvishandisoita basa rakakosha mukugadzirisa mold dhizaini yealuminium die casting. Zvishandiso izvi zvinobvumira vagadziri kufanotaura uye kugadzirisa zvinogona kukanganisa kusati kwatanga kugadzirwa. Nekutevedzera kuyerera kwezvinhu, kusimba, uye kutonhora mitengo, mainjiniya anogona kuona nzvimbo dzinowanzo porosity uye kugadzirisa zvinodiwa.
- Iyo Simulation App inogonesa kukurumidza kuyedzwa kweakasiyana ekugadzira marongero, kugadzirisa iyo optimization maitiro.
- Yepamberi software inoderedza kukanganisa mukukanda maitiro, inovandudza kushanda nesimba uye mhando.
- Predictive modeling yakasanganiswa neinopera element analysis inogadzirisa zvinokanganisa kukanda.
- Zvidzidzo zvenyaya zvinosimbisa kushandiswa kwekufananidza mukudyisa dhizaini dhizaini, kuderedza shrinkage kuremara.
Maturusi ekutevedzera haangowedzere kuvimbika kwemaitiro asiwo kuderedza mitengo yekugadzira nekudzikisira nzira dzekuedza-uye-kukanganisa.
Nguva dzose chengetedza uye kuongorora molds
Kuchengetedza uye kuongororwa kwe molds kwakakosha pakudzikisa porosity uye kuve nechokwadi chekukanda kunoenderana kunaka. Kugara uchitarisa kunobatsira kuona kupfeka, kukuvadzwa, kana kuvharika mumatanho ekuburitsa izvo zvinogona kutungamira mukukanganisa.
| Kuvandudza Type | Quantifiable Result |
|---|---|
| Yakaderedzwa Porosity Levels | Kuderera kwakanyanya mugasi porosity yakaonekwa kuburikidza neX-ray kuongorora. |
| Yakavandudzwa Mechanical Properties | 15% kuwedzera kwesimba rekusimba, kusangana nekumanikidza kusimba zviyero. |
| Lower Scrap Rates | 25% kuderedza muyero wezvikara nekuda kwekuremara kweporosity, kuwedzera kushanda kwekugadzira. |
| Kubvisa Shrinkage Cavities | Metallographic bvunzo dzakaratidza kuderedzwa shrinkage cavities, zvichitungamira kune denser microstructure. |
| Kuwedzera kweChikamu Kuvimbika | Kuvandudzwa kwekuramba kuneta uye yakakwirira-yekutakura mutoro wekushandisa aerospace. |
| Kubudirira Kwemari | 20% kuderera kwemitengo yekugadzira nekuda kwekuremara kwakaderedzwa uye kushandazve. |
Nekuita hurongwa hwekugadzirisa nguva dzose, vagadziri vanogona kuvandudza kuvimbika uye kusimba kwealuminum die cast cast parts.
Bata pamwe nevagadziri ve mold
Vagadziri ve mold vane ruzivo vanounza hunyanzvi hwakakosha patafura. Kuziva kwavo kwemaitiro enyama, masisitimu emhepo, uye kutonhora kwekudzora kudzora kunovimbisa kuita kwakaringana mold. Kudyidzana nenyanzvi dzine hunyanzvi kunobatsira vagadziri kugadzirisa matambudziko akaomarara, sekuderedza porosity uye kuwana yunifomu yekuyerera kwezvinhu. Kudyidzana uku kunowanzo tungamira kune zvitsva zvigadziriso uye yepamusoro-mhando castings.
Edza uye natsa dhizaini kuburikidza neprototyping
Prototyping inobvumira vagadziri kuti vaedze magadzirirwo eforoma pasi pemamiriro epasirese. Nekuongorora mashandiro eprototypes, mainjiniya anogona kuona nekugadzirisa nyaya dzisati dzagadzirwa zvizere.
- Prototyping inoderedza nguva dzekutenderera uye mari yekushandisa.
- Simba metrics anovandudza, zvichiratidza kuita zvirinani mold.
- Yakanatsiridzwa tsinde inlet masisitimu uye yakaderedzwa mavhoriyamu echipfuva anobatsira mukuderedza porosity.
Kuyedza uye kukwenenzvera madhizaini kuburikidza neprototyping inovimbisa kuti iyo yekupedzisira mold inopa inowirirana mhedzisiro uye inosangana nemhando yemhando.
Dzora jekiseni paramita kuderedza mhirizhonga
Jekiseni paramita, senge kudzvanywa, kumhanya, uye tembiricha, inonyanya kukanganisa kuyerera kwezvinhu panguva yekukanda kwealuminium kufa. Kudzora kwakaringana kweaya ma paramita kunoderedza kusagadzikana, kuderedza njodzi yekuvharirwa gasi uye porosity. Semuenzaniso, kuchengetedza yakatsiga jekiseni kumhanya kunovimbisa kuyerera kwelaminar, nepo yakakwana tembiricha marongero achidzivirira kusimba kusati kwasvika. Vagadziri vanofanirwa kutarisa uye kugadzirisa aya ma paramita kuti vawane hurema-isina castings.
Sarudza zvigadzirwa zvemhando yekufa uye alloys
Sarudzo yemidziyo yekufa uye alloys inokanganisa zvakananga kunaka kwealuminum die cast cast parts. High-purity alloys inoderedza kuumbwa kwegasi, nepo zvinhu zvinofa zvakasimba zvinoshingirira kushandiswa zvakadzokororwa pasina kukanganisa.
| Key Factor | Impact paPorosity |
|---|---|
| Alloy Selection | High-purity alloys inoderedza gasi kuumbwa, kuderedza porosity. |
| Temperature Control | Kuchengetedza tembiricha yakakwana kunodzivirira kuumbwa kwebubble musimbi yakanyungudutswa. |
| Pressure Management | Kudzvinyirirwa kwepamusoro panguva yekusimbisa kunobatsira kuzadza voids, kuderedza shrinkage porosity. |
| Mold Design | Kupinza mhepo kwakakodzera uye kudzivirira makona akapinza kunodzivirira gasi kupinda uye shrinkage. |
Kusarudza zvemhando yepamusoro kunovimbisa kuita kurinani kwekukanda uye kunoderedza mukana wekuremara.
Shandisa kunatsa uye degassing agents kuderedza gasi zvirimo
Kunatsa uye degassing agents vanoita basa rakakosha mukudzikisa gasi zvirimo mualuminium yakanyungudutswa. Aya maajenti anobvisa tsvina, mabhubhu, uye okisidhi kubva pamvura, kudzivirira gasi kuti isapinde zvakare mukukanda.
- Yepamusoro-mhando yekunatsa uye degassing agents inoderedza zvakanyanya gasi.
- Kubviswa nenguva kwe scum nemabubble kunovimbisa kuchenesa kukanda maitiro.
- Kunyatsoshandiswa kweaya maajenti kunosimudzira kurongeka kwealuminum die cast cast parts.
Kubatanidza kunatsa uye degassing maajenti mukuita kwekugadzira kunokonzeresa kukanda kune hurema hushoma uye kusimba kwekusimba.
Porosity inonetsa aluminium kufa kukandira, asi dhizaini yakakodzera mold inopa mhinduro dzinoshanda. Tekinoroji senge conformal kutonhora nzira uye yakakwirira-vacuum die casting (HVDC) inoderedza zvakanyanya porosity.
| Technique | Benefit |
|---|---|
| Conformal Cooling Channels | Inoderedza kushushikana kwekupisa uye kukanganisa, zvichitungamira kune epamusoro dimensional kurongeka. |
| High-Vacuum Die Casting (HVDC) | Inoderedza kupindirwa kwemhepo uye gasi, zvichikonzera zvikamu zvine hunyanzvi hwemagetsi uye kuderedzwa porosity. |
Kuomerera kune aya misimboti kunovimbisa kugara, kwemhando yepamusoro castings.
FAQ
Chii chinokonzera porosity mualuminium die casting?
Porosity inoitika nekuda kwemagasi akavharirwa, kutonhora kusina kuenzana, kana shrinkage panguva yekusimba. Kusakwana kwekugadzira mold uye kusaburitsa mhepo zvakakwana zvinowanzokonzera nyaya iyi.
Mold design inovandudza sei kunaka kwekukanda?
Yakakodzera mold dhizaini inoita kuti zvinhu zvifambe zvakanaka, zvinoderedza kusagadzikana, uye zvinosimudzira kutonhora kwakafanana. Izvi zvinhu zvinodzikisira porosity uye kuwedzera kurongeka kwechimiro chezvikamu zvakakandwa.
Sei kubuda mhepo kuchikosha mukugadzira mold?
Venting inobvumira mweya wakavharirwa uye magasi kutiza panguva yekukanda. Izvi zvinodzivirira gasi porosity, kuve nechokwadi-isina chirema uye chemhando yepamusoro aluminium kufa castings.
By:haihong
email：daphne@haihongxintang.com
email：haihong@haihongxintang.com
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