Reducing shrinkage defects at hot spots in aluminium squeeze castings

L. Xiao; Koichi Anzai; E. Niyama; K. Nakahara

Reducing shrinkage defects at hot spots in aluminium squeeze castings

L. Xiao, Koichi Anzai, E. Niyama, K. Nakahara

ENG - Metallurgy

Research output: Contribution to journal › Article › peer-review

Abstract

Shrinkage at hot-spots contained within an aluminum alloy squeeze casting has been reduced below the given specification by optimizing the feeding path design and using a squeezing pressure above a critical level. The optimization was assisted by a semi-empirical equation, correlating shrinkage with modulus (V/A), critical solid fraction (f_sc) and the solidification shrinkage (β). A satisfactory agreement has been found between the amount of shrinkage predicted by the equation and that found by experiments.

Original language	English
Pages (from-to)	197-203
Number of pages	7
Journal	International Journal of Cast Metals Research
Volume	11
Issue number	4
Publication status	Published - 1999 Dec 1

Keywords

Critical solid fraction
Feeding path
Hot-spots
Modulus
Shrinkage
Squeeze casting

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys

Cite this

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AU - Xiao, L.

AU - Anzai, Koichi

AU - Niyama, E.

AU - Nakahara, K.

PY - 1999/12/1

Y1 - 1999/12/1

N2 - Shrinkage at hot-spots contained within an aluminum alloy squeeze casting has been reduced below the given specification by optimizing the feeding path design and using a squeezing pressure above a critical level. The optimization was assisted by a semi-empirical equation, correlating shrinkage with modulus (V/A), critical solid fraction (fsc) and the solidification shrinkage (β). A satisfactory agreement has been found between the amount of shrinkage predicted by the equation and that found by experiments.

AB - Shrinkage at hot-spots contained within an aluminum alloy squeeze casting has been reduced below the given specification by optimizing the feeding path design and using a squeezing pressure above a critical level. The optimization was assisted by a semi-empirical equation, correlating shrinkage with modulus (V/A), critical solid fraction (fsc) and the solidification shrinkage (β). A satisfactory agreement has been found between the amount of shrinkage predicted by the equation and that found by experiments.

KW - Critical solid fraction

KW - Feeding path

KW - Hot-spots

KW - Modulus

KW - Shrinkage

KW - Squeeze casting

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JO - International Journal of Cast Metals Research

JF - International Journal of Cast Metals Research

SN - 1364-0461

IS - 4

ER -

Reducing shrinkage defects at hot spots in aluminium squeeze castings

Abstract

Keywords

ASJC Scopus subject areas

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