VX-LLC, a full-service company specializing in the buying and selling of used processing equipment since 1965, now offers a wide range of used rolling mills for sale. If you are searching for a quality used rolling mill at affordable terms, VX-LLC, with its worldwide network of equipment sourcing, has the solution.
Different types of rolling processes are determined by the temperature of the metal being rolled and if it is above or below the metal’s recrystallization temperature. If it’s above, then that is known as hot rolling. If it is below the recrystallization temperature, it’s called cold rolling.
Other factors include thickness requirements. The primary purpose of rolling is to take metal stock and pass it through one or more sets of rolls to reduce the metal’s thickness while, at the same time, keep it uniform and free of flaws or disfigurement.
VX-LLC is constantly selling and purchasing different types of rolling mills. Please view our current inventory to see available rolling mills, but we will routinely have the following types of rolling mills available…
This basic rolling mill setup consists of two rollers that rotate in the opposite direction of the desired movement of the workpiece. Material is fed between the rollers which compress and convert the workpiece into the desired shape and thickness. Two-high rolling mills can come uni-directional—meaning the material can only be fed through one way—or reversible, which allows for the material to run in either direction as needed.
This type of rolling mill can handle two workpieces in a single run. Three rollers are arranged parallel to each other, with the middle roller rotating in the opposite direction of the top and bottom rollers. A workpiece can be fed in one direction between the top and middle rollers. In contrast, another can be supplied simultaneously between the middle and bottom rollers and run in the opposite direction.
A four-high rolling mill consists of four rolls (two large, two small) and specializes in reducing material to minimal thicknesses. The benefits of the larger rolls serving as backups mean that roll deflection can be avoided, thus allowing for smaller work rolls. This design also means less overall energy is needed for reducing material, and the arrangement produces a more uniform thickness throughout.
Similar to four-high rolling mills, six-high rolling mills consist of the expected work rolls and backup rolls, but also a set of intermediate rolls. The intermediate rolls allow for horizontal adjustment, which can prevent edge drop—meaning the edge becomes lighter in thickness because there is no support at the edge. Depending on the horizontal movement of the rolls, a six-high rolling mill provides for substantial roll shape. Additionally, a more extensive work roll allows for transmitting considerable torque and speeds of up to 7,000 FPM, which can lead to savings in the cost of making the material.
Sometimes called a cluster rolling mill, a 20-high rolling mill uses cascading supporting rolls, which all apply force on the small work rolls located at the center of the setup. With this arrangement, higher roll pressures are possible without bending the work rolls and risking the quality of the end product. This is a unique type of mill to use with elastic or tough materials that need processing.
As the name implies, a reversing rolling mill is one in which the metal is passed back and forth, and thickness is brought down incrementally with each pass. With a reversing rolling mill, metal can be easily reduced to gauge and is particularly useful in working with silicon steels and other exceptional grades.
Visit the Inventory page to see all of the used rolling mills VX-LLC has available. Remember that, a full-service company, VX-LLC also provides dismantling, packaging, shipping, and installation services.