The rolling roll, wet quality check rolling method, before in the wet quality check rolling

摘要

PROBLEM TO BE SOLVED: To provide a wet skin pass rolling technology of a black plate etc., which suppresses rolling instability due to jumping and eliminates the degradation in weldability of a steel plate surface in wet skin pass rolling of the black plate etc.;SOLUTION: There are provided the rolling roll which is a rolling roll 1 for a fore-stage stand in a wet skin pass rolling process of a steel strip and is provided with a plurality of dimples on the roll surface and in which the diameter ϕ (mm) of the dimple opening in the case of circular approximation of the openings of the dimples 2 is ≤0.1 to ≥0.01 mm and a rolling roll surface is in a range from 0.1 to 1.5 μm in an arithmetic mean roughness (Ra) measured along the axial direction of the roll, and the wet skin pass rolling method using the rolling roll, and the steel plate and the tin-coated steel plate.;COPYRIGHT: (C)2008,JPO&INPIT