| 摘要 |
PURPOSE: A bent three-layer steel plate, device and method for bending a three-layer steel plate are provided to ensure sufficient strength since uneven parts are formed one or both sides of the three-layer steel plate. CONSTITUTION: A device for bending a three-layer steel plate comprises first to sixth sets of rollers. The first roller set consists of first to third rollers. The second roller set consists of first to fourth rollers. The third roller set consists of first to fourth rollers. The fourth roller set consists of first to second rollers. The fifth roller set consists of first to second rollers. The sixth roller set consists of first to second rollers.
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