Due to the rough edges of the burrs caused by the cutting, a small serrated crack is generated at the edge of the cutting cold steel coil. The shape defect of the cutting cold steel coil is higher (or lower) than the one end of the coil, and is continuous, like a pagoda, which appears in the inner (outer) ring portion of the coil.
Coiling machine centering device failure, strip steel deviation.
cutting cold steel coil is not straight, such as sickle bending, narrowing, etc.
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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