A Steckel mill is a metalworking tool that uses rollers to turn steel ingots into sheet metal. It can be used for hot or cold rolling and achieves the finish in fewer passes. The design includes two winders and heated drums to store and keep the product consistent.
A Steckel mill is a type of metalworking tool that is used to turn steel ingots into sheet metal. Also called a reversible finish mill, a Steckel mill uses a series of rollers to turn raw metal into flattened, usable metal. They are called reversible finishing mills because the machine’s rollers can be set to roll both forward and backward over the raw material. A more modern type of mill, the Steckel mill allows the finish to be done in fewer passes through the machine than other types of mill.
In Steckel and similar factories, rollers are used to flatten the metal. The lamination process can be hot or cold, depending on the temperature. Hot rolling is considered when the temperature of the rolls is above the recrystallization point of the metal. When the temperature of the rolls is lower than the recrystallization temperature of the metal, it is referred to as cold rolling. The largest tonnage each year is produced by hot rolling. A Steckel rolling mill can be used for both hot and cold rolling, although hot is more common.
There are different types of mills that can be used in metal rolling and finishing. A Steckel rolling mill is a type of tandem rolling mill. This means that the mill is made up of a series of different and connected rollers through which the metal passes. Instead of having to pass the metal through a set of rolls multiple times, the same finish can be achieved with just one pass through a Steckel mill, although multiple passes through the entire mill may be required.
A Steckel rolling mill design includes two winders instead of the normal single winder on most rolling mills. Wrappers direct the flow of metal in and out of the machine. At the entrance of the machine, the first wrapper drags the material into the working area. The second wrapper is located at the exit and pulls the processed material in and out of the machine. If desired, the wrappers can be reversed so that the exit wrapper pulls the material back through the rolls, working the metal back through the finishing process.
These mills also feature heated coils, or drums, onto which the finished product can be rolled as it exits the machine. The drums not only store the product until the direction of rotation is reversed, they also help keep the product consistent and uniform. In this way, the producer can process a greater amount of material at the same time than other mills.
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