A precision leveler has two main components: the frame and the rollers.
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Frame: As the machine’s main body, it consists of a base, columns, and connecting beams, joined into a closed pre-stressed structure by 4 tension bolts. The welded frame undergoes annealing to eliminate internal stress, ensuring sufficient strength and rigidity—with minimal elastic deflection under heavy loads—to meet sheet straightening needs.
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Rollers: The working part includes work rolls and backup rolls. Work rolls are made of 60CrMoV, with: quenched and tempered hardness (HB286–321), surface hardness (HRC56–63), hardened layer depth (6–10mm), roughness (0.8μm), and dimensional tolerance (h6). Three rows of upper and lower backup rolls are added to ensure work roll rigidity.