Coating processes – Measuring – testing – or indicating
Reexamination Certificate
2011-07-19
2011-07-19
Turocy, David (Department: 1715)
Coating processes
Measuring, testing, or indicating
C427S435000, C427S436000
Reexamination Certificate
active
07981463
ABSTRACT:
An exemplary embodiment of manufacturing a hot-dip Sn—Zn coated steel sheet is provided which can include pre-coating a Fe—Ni alloy containing between about 10 to 80 mass % of Ni, and a remainder being Fe on a steel sheet, immersing the steel sheet into a Sn—Zn hot-dip coating bath so as to form a hot-dip coating layer on the steel sheet, cooling the hot-dip coating layer at a cooling rate of about 10° C./sec to about 30° C./sec so as to obtain a hot-dip Sn—Zn coated steel sheet, measuring a differential scanning calorimetric curve of the hot-dip Sn—Zn coated steel sheet by a differential scanning calorimetry, and distinguishing whether the hot-dip Sn—Zn coated steel sheet has an objective microstructure by the measured differential scanning calorimetric curve.
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Goto Yasuto
Kurosaki Masao
Mizuguchi Toshinori
Dorsey & Whitney LLP
Nippon Steel Corporation
Turocy David
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