The JIUZH high strength steel straightener is a professional industrial flattening equipment independently developed for high-tensile steel materials widely used in automotive manufacturing, engineering machinery and steel structure production. Different from ordinary sheet leveling devices, this straightener is optimized for the high hardness, strong toughness and severe residual stress characteristics of high-strength steel plates, effectively solving common processing problems such as plate warping, longitudinal bending, edge waves and uneven flatness after stamping, cutting and hot rolling. To adapt to the high-precision production standards of high-strength steel, the equipment adopts the core control system of Mechanical CNC Leveling Machine, which realizes intelligent and precise control of the whole leveling process. It breaks through the limitations of traditional manual debugging and makes professionalcnc machine leveling technology accessible for mass industrial production of high-strength steel workpieces. The equipment’s roller arrangement and pressure transmission structure are upgraded based on the mature design of Medium Plate Roller Leveller, with thickened alloy leveling rollers and reinforced bearing structure, which can withstand high-load pressing operations and ensure uniform stress on the entire surface of thick and high-hardness steel plates. In integrated automated production workshops, this high-strength steel straightener can perfectly cooperate with Medium Plate Flattening Machine to form a collaborative leveling unit, realizing one-time stress elimination and flatness correction for batch steel plates, greatly improving production continuity and consistency. Equipped with a full hydraulic real-time compensation system and PLC intelligent touch control system, the machine can automatically match roller gaps and pressing force according to different steel grades, plate thicknesses and tensile strengths. It supports storage of multiple sets of processing parameters, avoiding repeated debugging and human errors. After precise correction, the flatness of high-strength steel plates is effectively controlled, the internal stress is completely released, and the dimensional stability of subsequent welding, assembly and finishing processes is significantly improved. Widely applicable to 400MPa-800MPa high-strength steel plates for automobile frames, mechanical equipment bases and marine structural parts, this industrial straightener effectively reduces product scrap rate and rework volume, helping metal processing enterprises achieve high-efficiency and high-quality standardized production of high-strength steel components.