Surface treatment of a rolling mill roll
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United States of America Patent
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-
Jul 11, 1989
Issued Date -
N/A
app pub date -
Jan 29, 1988
filing date -
Jan 30, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for surface treatment of a rolling mill roll coated with a coating of metal wherein the coated roll is surface heated, e.g. by a continuous laser beam in a helical path to melt the coating and a thin superficial layer of the roll thereby forming an uninterrupted molten alloy layer comprising at least a part of the coating and of the superficial layer of the roll, cooling the alloy layer, and marking the roller by an intermittent laser beam, e.g. following the same helical path with a given delay to produce local fusion of the alloy layer and of the roll surface beneath the alloy layer and form micro-craters having bases and rims integrated, after solidification, with the alloy layer.
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