Circular workpieces can warp after machining due to several reasons such as uneven cooling, residual stresses, and improper machining techniques.

Steel plate levelers are machines designed to flatten and level a wide range of sheets, plates, and other metal materials. These devices are commonly used in the metalworking industry, where precision is essential, and high-quality results are paramount. Steel plate levelers are also employed in the manufacturing of parts for various industries, including automotive, aerospace, and construction.

Causes of internal stress and flatness defects in the plate: Residual stress formed during material manufacturing Mechanical cutting or thermal cutting temperature change These internal stress and flatness defects will have adverse effects on subsequent processing.

The coil material will still warp during laser processing after uncoiling and leveling, and the leveling machine needs to be used again to remove internal stress