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The large roll diameter of papermaking machinery is a core component of high-speed paper machines and specialty paper production lines, specifically designed to enhance production efficiency and paper quality. Its diameter breaks through the conventional (usually ≥1200mm, and some high-end models reach 2500mm), achieving a performance breakthrough of "rigidity and flexibility in combination" through a composite structure of high-strength substrate and precision functional layer: The base material adopts alloy steel forging/bimetallic composite casting process. The tensile strength of the roller body is ≥900MPa, and the yield strength is over 650MPa. Combined with deep cryogenic quenching + ultrasonic frequency induction quenching and tempering technology, the toughness of the core is increased by 40%, and the surface hardness gradient is controlled within the golden range of HRC58-62 (Rockwell). Ensure long-term service without deformation at a high temperature of 150ºC and a linear pressure of 80kN/m; The functional layer integrates advanced materials such as nano-composite rubber, ceramic metallization coating, and microcrystalline glass coating. The surface hardness covers 850-980 Schohs (conventional rubber coating to super-hard mirror surface), and the wear resistance is 3-5 times higher than that of traditional roller bodies. The friction coefficient is precisely controlled within the dynamic range of 0.12-0.25. Combined with the dynamic medium and high compensation algorithm and the laser online grinding system, Achieve a uniform appearance of 0.005mm across the entire width of the roller surface, ensuring that the uniformity fluctuation of the paper is ≤±1.2% (ISO standard). It is particularly skilled in handling key processes such as wet pressing, surface sizing, and super calendering for high-value-added products like food cardstock, glassine release paper, and digital printing substrates. While achieving a single-machine production capacity exceeding 3000m/min, Reduce the paper sheet crushing rate to below 0.3‰, and optimize the comprehensive energy efficiency by 18% to 25% compared with medium and small roller diameter equipment, helping paper enterprises establish technological barriers in the green, high-speed and customized tracks.
| Technical parameters | |
| Roller diameter | Customized |
| Type and thickness | Customized |
| Roller body material | Customized |
| Cylinder head | Customized |
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