Steel leveling machine

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Steel leveling machine

The operational principle of a steel leveling machine is predicated on the premise that materials possess elastic and plastic deformation characteristics. The machine corrects the metal sheet by applying mechanical force, which causes the sheet to undergo plastic deformation. This process eliminates internal stresses and achieves the desired flatness and geometric shape. The sequence of events is outlined below:

Material Feeding: The sheet metal is fed into the feeding area of the leveling machine, where the roller system guides the sheet to the working area.

The function of the upper and lower rolls is as follows: The leveling machine is typically composed of a set of upper rolls and a set of lower rolls. The clearance between these rolls can be adjusted. Upon the sheet metal's traversal through this gap, the roller system exerts pressure, inducing plastic deformation of the sheet metal.

Plastic Deformation: The metal sheet undergoes both elastic and plastic deformation under the pressure of the upper and lower rolls. As a consequence of this process, internal stresses and distortions are gradually eliminated, resulting in a flatter surface on the sheet metal.

The process culminates in the sheet metal being discharged. Following a series of leveling processes, the treated metal sheet exits the discharge port of the leveling machine, achieving the desired flatness and geometry.

In the case of thin steel plates, it is advantageous to employ a greater number of shaft rollers, whilst ensuring that the diameter of the rollers is reduced. Conversely, for thick steel plates, the number of shaft rollers should be fewer, and the diameter should be larger. This is due to the fact that thinner steel plates exhibit greater elasticity, necessitating the employment of additional rollers to generate more wave deformations, thereby overcoming the inherent elasticity and attaining the desired correction.

Laser and Optical Scanning Systems: These systems facilitate the detection and measurement of steel coil imperfections with exceptional precision. By accurately mapping the surface profile of the coil, leveling machines can apply corrective measures precisely, resulting in a flawlessly leveled steel product.

Increased Productivity: The employment of advanced leveling machinery facilitates the efficient processing of substantial volumes of steel coils at elevated speeds, thereby reducing production times and enhancing overall efficiency. These machines are engineered to operate with versatility, accommodating different steel grades and thicknesses, thus enhancing the adaptability of the steel processing industry.

Recent advancements in cooling strategies: In the steel industry, novel flexible cooling strategies and devices have been developed to achieve proper mechanical properties depending on the plate thickness. These include accelerated cooling, direct quenching and self-tempering, quenching and partitioning, and rapid cooling with isothermal holding in the bainitic phase field.

In addition, the industry has developed resource-efficient production methodologies. The development of thin strip casting and direct rolling technologies has enabled the establishment of energy-efficient production methodologies. These technologies have been shown to reduce energy use by up to 75% and to produce sheet metals with a thickness of approximately 1 mm.

Thermomechanical Processing Modeling: The application of advanced modelling techniques facilitates the simulation of the thermomechanical processing and microstructural evolution of steel during leveling. This approach is instrumental in enhancing the efficacy of the leveling process and ensuring the quality of the final product.

The steel leveling machine industry is undergoing continuous evolution to meet the increasing demand for high-quality steel products, with a focus on precision, efficiency, and sustainability.