Title:
METHOD OF MANUFACTURING MOLTEN ZINC PLATED STEEL PLATES HAVING FEW UNPLATED PORTIONS
Document Type and Number:
WIPO Patent Application WO/1993/011271
Kind Code:
A1
Abstract:
A method of manufacturing molten zinc plated or alloyed molten zinc plated steel plates having few unplated portions is provided, which has the steps of heating and anneal-reducing a steel plate continuously, and then introducing the resultant steel plate into a molten zinc bath with the steel plate kept not in contact with the atmospheric air to carry out a zinc plating operation, characterized in that a steel plate containing not more than 1 % by weight of carbon, 0.01-1.0 % by weight of silicon, 0.05-2.0 % by weight of manganese and not more than 0.15 % by weight of phosphorus and satisfying the formula (1): Si/28+Mn/55+P/31 0.01, is used as a material to be plated, this steel plate being subjected to carburization during the anneal reduction thereof or during a period of time in which the anneal-reduced steel plate is being introduced into a molten zinc bath. In formula (1), each element symbol indicates the content (weight percent) of an element of a steel plate).
Inventors:
ISOBE MAKOTO (JP)
YASUDA AKIRA (JP)
YAMATO KOJI (JP)
YASUDA AKIRA (JP)
YAMATO KOJI (JP)
Application Number:
PCT/JP1992/001591
Publication Date:
June 10, 1993
Filing Date:
December 07, 1992
Export Citation:
Assignee:
KAWASAKI STEEL CO (JP)
International Classes:
C23C2/02; C23C2/06; (IPC1-7): C23C2/02; C23C2/06
Foreign References:
| JPH03199344A | 1991-08-30 | |||
| JPH02194156A | 1990-07-31 | |||
| JPS55122820A | 1980-09-20 | |||
| JPS63149321A | 1988-06-22 | |||
| JPS701725B | ||||
| JPS6058305B2 | 1985-12-19 |
Other References:
See also references of EP 0571636A4
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