| 摘要 |
PURPOSE: To provide a bridle roll with which a high coefficient of friction between a roll and a strip is ensured and the high coefficient of friction is maintained for a long term even when rolling oil, liquid chemical, water, etc., are stuck on a strip in the bridle roll for imparting tension, which is used in a cold rolling line, surface treating line or the like of an iron making process. CONSTITUTION: By executing dull-working of a roll surface, next, finishing the tip parts of protrusions on the roll surface into flat parts 1, making the center-line mean roughness Ra on the roll surface into 3-10μm, also the average interval Sm between the projecting and recessed parts on the roll surface into 30-80μm, further, taking loaded length rate tp at the cutting level of 10% in the relative load curve as 10-60%, the bridle roll is constituted.
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