Plate levelers are most often used for leveling thin or heavy gauge materials. Typically, they have individual roll drive, along with individual roll control. Closed loop positioning allows the leveler to generate machine setting recipes for common plate runs.

With the use of a plate leveler, it’s possible to maintain uniform correction of areas in which the front and/or rear edge straightening reaction fluctuates sharply, also constant areas are made possible. They also reduce any residual stress in steel plates. This allows the manufacturing of steel plates that do not become deformed after cutting.

In general, plate levelers are equipped with a block-type hydraulic adjustment system, or a means of adjusting the top and bottom leveler rolls individually.

The demand for plate with increasingly higher strength will continue to rise over the next few years. The challenge we have accepted is to produce high-precision plate with less internal stress. With the latest heavy-plate leveler design, we combine decades of experience in precision leveler manufacturing with state-of-the-art technology.

There are some important factors to consider when choosing the right machine for the job. Included is the roll diameter, the roller pitch, and the number of work rolls. The work rolls can also be backed up for more precise flatness and zone control. The closer the roller pitch, and the smaller the leveling roller diameter, the better the result; depending on the thickness and yield of the material. A leveler is superior to a straightener because the leveler will remove more than cross bow or coil set.

With over 60 years’ experience and a real focus on customer satisfaction, you can rely on American Steel for your next project. We provide professional renovation and installation services with a real focus on customer satisfaction.

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When choosing the right corrective leveler, there’s some important factors to consider – the roll diameter, the roller pitch and the number of work rolls. A leveler is the best choice to a straightener as the leveler will remove more than cross bow or coil set.

There are three stages in the leveling process:

• No. 1 – Leveling is achieved by accurately bending the metal strip back and forth as it passes through a series of small-diameter offset rolls. The gap between the rolls is set independently on a leveler’s entry and exit. The entry rolls should be deeply nested, as this forces the material through extreme angles to erase memory caused by trapped internal stresses. This is also known as ‘plunge’, a technique for removing strip memory.
• No. 2 – A corrective leveler uses adjustable pressure points called flights, under the rolls to raise and lower them to an exact position. By adjusting a work roll’s shape, the material’s path length can be altered through the leveler. A longer path length allows the material to be stretched more because more work is being performed on it as it passes through the rolls.

With longer lengths of material, the outer edges can be wavy. To keep them from stretching further, a shorter path should be chosen for the outer edge flights.  To achieve flatness, it’s important that the strip’s center be stretched. If all the material is of equal length, the strip will be flat when it exits the leveling rolls.

If the material has a center buckle in it, then the flights need to be adjusted higher on the edges, making a longer path for the edges of the strip.

• No. 3 – It’s now time to re-set the strip’s memory to flat as it leaves the leveler. The appearance of the material that will be shipped to the end-user is achieved in the final three roll clusters. If the roll gap is set too deep, the material will be forced upward by the last roll, which will create an up-bow. It is normal to set the leveler’s exit gap near the materials’ gauge. This is a simple, but important rule to follow.

With over 60 years’ experience and a real focus on customer satisfaction, you can rely on American Steel when it comes to choosing the right corrective leveler for your operating needs.

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