The undulating wave shape appears on the surface at 1/4 of the width direction of the width direction cold coil.
It is generally caused by a large local elongation.
The middle of the width direction of the steel strip is wavy and extends along the rolling direction.
The thickness of the width direction cold coil after rolling is not consistent with the dispatch, but can be attributed to other specifications.
Due to the tension and the like, the width of the local portion of the steel strip is greatly different from the width of other portions.
The width direction cold coil is thick in the middle and thin on both sides.
The width direction cold coil is thick on one side and thin on one side.
STEEL GRADE | Tensile Strength | Yield Strength max | Elongation min. | r | n | |||
<0.70 | 0.70-<1.0 | 1.0-<1.6 | >=1.6 | min | min | |||
SC2 | 270-330 | 180 | 38 | 39 | 40 | 41 | 1.9 | 0.20 |
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