Cast iron component for enveloped casting, enveloped casting product using it, and method for producing cast iron component for enveloped casting
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United States of America Patent
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Oct 22, 2002
Grant Date -
Jun 21, 2001
app pub date -
Dec 1, 2000
filing date -
Dec 15, 1999
priority date (Note) -
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Abstract
The present invention provides a cast iron component for enveloped casting which is characterized by that the cast iron component has a surface to which enveloped casting is applied and which has a surface roughness such that a maximum height Ry is from 65 to 260 .mu.m and a mean spacing of profile irregularities Sm is from 0.6 to 1.5 mm; an enveloped casting product using it; and a method for its production.
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