The densification mechanism of squeeze casting

Details The densification mechanism of squeeze casting The densification mechanism of squeeze casting

2009-03-24

arxiv.org/abs/0903.4016v1

Physics

Condensed Matter

Materials Science

15 pages, 1 table, 4 figures, 11 conferences

Scientific paper

The solidification process during squeeze casting is analyzed based on the classical solidification and plastic deformation theory. The linear relationship between punch velocity and the solidification rate is established if the density change of molten meals is neglected. To obtain defect-free castings, the punch velocity should be larger than the solidification rate. The densification mechanism is also discussed. The plastic deformation will result in the radical movement of the central molten metals, which reduces the temperature gradient from the center to the mold wall, which provides the condition to obtain defect-free castings: simultaneous nucleation.

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