METHOD FOR CONTROLLING THICKNESS PROFILE OF STRIP IN HOT ROLLING PROCESS

The present invention relates to a method to control a thickness profile in a strip width direction in a hot rolling process comprising: a step of designing and inputting a target crown of a strip based on material-specific properties; a step of selecting a form and a material of a work roll dependi...

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Bibliographic Details
Main Author PARK, SUNG GIL
Format Patent
LanguageEnglish
Korean
Published 06.03.2015
Subjects
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PUNCHING METAL
ROLLING OF METAL
TRANSPORTING
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Summary:The present invention relates to a method to control a thickness profile in a strip width direction in a hot rolling process comprising: a step of designing and inputting a target crown of a strip based on material-specific properties; a step of selecting a form and a material of a work roll depending on the material-specific properties; a step of rolling by the selected work roll; a step of determining whether the target crown is achieved; and a step of changing the pressure of a cooling water with respect to the work roll when the target crown is not achieved. The present invention has an effect of markedly reducing generation of a full-wave and variation in thickness in a strip width direction caused by increasing the wear amount of a work roll when a material having a large number of rolling is rolled in high load and at the same width.
Bibliography:Application Number: KR20130154473