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Company Profile
Shandong Qingliang Mould Technology Co., Ltd. was founded in 2011. As a powerful manufacturing enterprise specializing in R&D, production and full-cycle customization services for roll shaft forgings, we deeply focus on the track of core components for power transmission and pressure-bearing applications. Backed by forging processes, heat treatment technologies and a strict quality control system, we take "Forge tough and durable roll shafts to enable efficient and stable operation" as our mission. We provide high-strength, high-wear-resistant and high-precision roll shaft forging solutions for industries such as metallurgical rolling mills, mining machinery, construction machinery, papermaking machinery, printing and packaging, and new energy equipment, and have become a core supplier for numerous large-scale equipment enterprises and key engineering projects.
Performance Characteristics of Roll Shaft Forgings
High Strength & Stiffness: The metal flow line is distributed along the stress direction of the roll shaft, endowing it with excellent bending and torsional resistance. Its elastic modulus reaches ≥206GPa, and the deformation under heavy load is ≤0.01mm/m, ensuring long-term operational precision of the equipment.
High Wear Resistance & Corrosion Resistance: The surface undergoes quenching, nitriding or surfacing welding treatment, with a hardness of HRC 55-62 and a hardened layer depth of 1.5-5.0mm. The hardness is uniform (deviation ≤3HRC), and the wear resistance is improved by 30%-50% compared with common roll shafts.
Strong Toughness & Fatigue Resistance: The fatigue life reaches more than 2×10⁶ times. It can withstand long-term alternating loads and frequent impact loads without crack initiation, and the failure rate is reduced by 40% compared with common roll shafts.
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