Metal treatment – Having portions of differing metallurgical properties or...
Patent
1997-02-10
1999-01-05
Yee, Deborah
Metal treatment
Having portions of differing metallurgical properties or...
148321, 148323, C22C 3704
Patent
active
058556982
ABSTRACT:
An iron casting, such as a cylinder block for an internal combustion engine, includes a number of component zones, with each of the zones having selected surface to volume ratio and selected section thickness sufficient to cause in-mold cooling during the casting process at controllable, but varying rates sufficient to result in predetermined, different percentages of nodular and compacted graphite iron in at least two of the zones of the cylinder block or other iron casting.
REFERENCES:
patent: 4057098 (1977-11-01), Platonov et al.
patent: 4419801 (1983-12-01), Yamashita et al.
Drouillard Jerome R.
Ford Global Technologies Inc.
Yee Deborah
LandOfFree
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