How to Choose a Slitting Line


Slitting lines are specialized machinery that breaks down massive metal coils into more petite strips. Rotary knives These slitting lines are typically a combination of several machines. They break massive coils into smaller diameters, which are then sent to downstream operations. There are a variety of processes involved in slitting lines, including the use of an uncoiler, slitter, and recoiler.

When deciding on the best slitting line for your business, you need to consider the type of material you will be processing. The slitting process combines shearing with bending deformation. Depending on the material, a slitting line can produce flat-rolled coils, sheets, or straps. Some slitting lines are designed to cut steel coils with widths as narrow as 7/8″. Other slitting lines are made to handle aluminum foils and web materials.

Typically, slitting lines are 8″ to 84″ wide, but the thickness of the coil can vary. A slitting line for large metal coils may include a press cutter and a recoiler. Heavy-duty slitting lines are built for mass production and may include a coil feeder. Choosing components that match the product and the amount of setup time will help you get the most efficiency from your slitting line.

In addition to the slitter, a steel coil slitting line may also have a strand unit, which traps slit mults. Another standard device is a turnstile, which supports the coil by its ID. Turnstiles are ideal for many slitting line applications but can be troublesome for small-ID coils.

Depending on the type of material, you will need to choose the proper tensioning method for your slitting line. A standard option is to use a scrap winder to pull the coil under tension. Scrap winders are usually used on medium-gauge, lightweight, or thin-gauge coils.

Using an entry loop will also help you solve the problem of excess tension. It will also improve the quality of the cut produced by your slitting line. However, you will need to have proper back tension in place. If you don’t, the material could scrape up.

Before you start production, check the blade clearance on your slitter machine. This is important because the blade contact area is where the knives come in contact with the material. If the blades are dull or the clearance is too tight, you can experience a rough cut. Also, you should make sure the adjustment is within a specific tolerance range.

While slitting is a complex operation, it can be easily automated to improve production. Automated stacking, down ending, and radial banding are a few options. With an automated recipe management system, you can reduce setup time and improve the consistency of your product.

Manual exit loop manipulation is a skill that can be difficult to master. Luckily, EDC has developed control systems to help your slitting line run optimally. Additionally, EDC can provide feedback on where the loop is at any given time.