Aluminum alloy casting and method for producing the same, and apparatus for producing slide member
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United States of America Patent
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Jan 31, 2017
Grant Date -
Oct 31, 2013
app pub date -
Jun 26, 2013
filing date -
Mar 9, 2009
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Abstract
An aluminum alloy casting free from crack-causing needle-shaped crystallized substances, and an apparatus and a method for producing a slide member excellent in mechanical properties such as abrasion resistance are provided. A melt of an iron-containing aluminum alloy poured into a vessel in the completely liquid state is vibrated by a vibrating needle of a vibration applying unit, and then a core is inserted into the melt to cool the melt, whereby the aluminum alloy casting is produced as a sleeve of a slide member. The vibrating step is carried out at a frequency of 20 to 1000 Hz, and is continued until just before the melt is cooled to the solid-liquid coexisting temperature region.
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