• Title/Summary/Keyword: 스퀴즈 캐스팅

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A Study on the Development for the Vehicle Engine Mountion Bracket Using Squeeze Casting (스퀴즈 캐스팅 제조법에 의한 자동차 엔진 마운틴 브래킷 개발에 관한 연구)

  • Kim, S.H.
    • Journal of Power System Engineering
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    • v.7 no.4
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    • pp.44-48
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    • 2003
  • Alumium alloys casting are gaining increased acceptance in the automotive and electronic industeries and squeeze casting is the most efficient method of manufacturing such mass produced parts. This study has been investigated the microstructures and mechanical properties of Al-7.0Si-0.4Mg(AC4C)alloy fabricated by squeeze casting process for development of Engine Mountain Bracket. The microstructure of squeeze casted specimen were composed of eutectic structure Alumimim solid solution and $Mg_2Si$ precipitates. The tensile strength of as-solid solution treatment Al-7.0Si-0.4Mg alloy revealed 2985MPa. It was found that Al-7.0Si-0.4Mg alloy have good aging hardening effect results are presented to show the validity of the control method.

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A Study on the Squeeze Casting of Al-7.0Si-0.4Mg Alloy for Fuel System Parts (Al-7.0Si-0.4Mg 합금 자동차 연료계 부품의 스퀴즈 캐스팅에 관한 연구)

  • 김순호
    • Journal of the Korean Society for Precision Engineering
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    • v.20 no.12
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    • pp.48-54
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    • 2003
  • Alumium alloys casting are gaining increased acceptance in the automotive and electronic industeries and squeeze casting is the most efficient method of manufacturing such mass produced parts. This study has been investigated the microstructures and mechanical properties of Al-7.0Si-0.4Mg (AC4C) alloy fabricated by squeeze casting process for development of Fuel system Parts (Fuel rail). The microstructure of squeeze casted specimen were composed of eutectic structure Alumimim solid solution and $Mg_2$Si precipitates. The tensile strength of as-solid solution treatment Al-7.0Si-0.4Mg ahoy revealed 298.5MPa. It was found that Al-7.0Si-0.4Mg alloy have good corrosion resistance in electrochemical polarization test.

A study on Defect Control of Al-12%Si Alloy by Partial Squeeze Die Casting Method (스퀴즈 병용 다이캐스팅법에 의한 Al-12%Si 합금의 결함제어에 관한 연구)

  • Kim, Ok-Soo;Kim, Yong-Hyun;Lee, Kwang-Hak;Kim, Heung-Sik
    • Journal of Korea Foundry Society
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    • v.15 no.4
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    • pp.377-387
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    • 1995
  • Partial squeeze die casting is a special die casting process which combines squeeze technique to conventional die casting. The influence of squeeze pressure $(1500-3000kg/cm^2)$ and time-lags(0.5-2.0sec) on defect control, density and microstructure of ADC12 alloy die casts has been studied by appling partial squeeze die casting to air compressure front housing production. Defect free, maximum density of $2.736kg/cm^3$ with sound microstructure of ADC12 alloy die cast has been obtained by partial squeeze die casting technique at the pressure of $2000-2500kg/cm^2$ and time-lags of 1.0-2.0sec.

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Effect of Partial Squeeze on the Quality of Casting Products in the Vacuum Die Casting (진공다이캐스팅시 국부스퀴즈 효과가 주조품질에 미치는 영향)

  • 김억수;김성준;이광학;문영훈
    • Transactions of Materials Processing
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    • v.8 no.5
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    • pp.491-497
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    • 1999
  • The effect of partial squeeze on the quality of casting products in the vacuum die casting was investigated to make defect free casting products with excellent mechanical properties. The partial squeeze and vacuum die casting process was industrially implemented in making reaction shaft support which was made of a hypereutectic Al-15%Si alloy. To combine squeezing and vacuum effects, the plunger injection system was designed and attached on the chill vent type vacuum machinery system. The combination of vacuum effect before injection and partial squeezing effect after injection resulted in defect free die casting products. The uniform distribution of fine eutectic and proeutectic Si obtained from trial process also provided excellent mechanical properties.

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A Study on the Fabrication Process and Melt Infiltration of Salt Core in Squeeze Casting Method (스퀴즈캐스팅용 Salt Core의 제조 및 용탕침투성에 관한 연구)

  • Kim, Ki-Bae;Noh, Sang-Woo;Lee, Ho-In;Nam, Tae-Woon
    • Journal of Korea Foundry Society
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    • v.17 no.4
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    • pp.402-410
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    • 1997
  • Developing a salt core for squeeze casting process, two different salt cores(pure salt core and mixed salt core) were fabricated and investigated. Pure salt core was composed of 100% NaCl and mixed salt core was made by mixtures of NaCl with MgO(1%), $Na_2B_4O_7$(2%), and talc(1%) as a binder or a strengthening agent. Salt cores were compacted to various theoretical density, heat treated, and then squeeze-cast with molten Al alloy(AC8A). The compression strength of salt cores were measured and the squeeze-cast products were examined for shape retention, infiltration of molten metal into the cores, and microstructures. The shape of salt core compacted at above 75% of the theoretical density was maintained stably. The higher theoretical density of salt cores gave higher compression strength, and the compression strength of mixed salt core was higher than that of pure salt core. Namely at 90% theoretical density, the compression strength of mixed salt core was $6.3 kg/mm^2$, compared to $4.6 kgmm^2$ for pure salt core. At a squeeze casting pressure of $1000 kg/cm^2$, molten Al alloy was infiltrated into pure salt core of under 85% of the theoretical density. At squeeze casting pressure of $1000 kg/cm^2$, only mixed salt core above 90% of the theoretical density were valid, but the shape of the core was altered in the case of pure salt core at 90% of theoretical density. A key factor for developing a salt core for squeeze casting process was estimated as the ultimate compressive strength of salt core.

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