The production of hot strip is a key element of steel production. Since close to half of all steel produced is hot-rolled to strip, mills require maximum throughput and availability combined with geometrical precision and the ability to create optimum material properties. Ever since Primetals Technologies was the first in the world to develop a SSP, we have maintained our position as a pioneer in the field. Since that time, we have enhanced the SSP based on our extensive experience in the steel industry to make numerous improvements such as:.
US5001915A - Method for improving hot strip mill processing - Google Patents
Rolling (metalworking) - Wikipedia
Hot strip mills in these days are either conventional hot strip mills or strip mills for rolling thin slabs. The primary function of the conventional hot strip mill HSM is to reheat the semi-finished steel slabs rolled or continuously cast to the rolling temperatures and then to roll them thinner and longer through a series of rolling mill stands driven by large motors and finally coiling up the lengthened steel sheet for its easy handling and transport. The hot strip mill supplies coils for cold rolling mill, strip shearing and slitting units as well as a finished product for shipment directly to the customers. Most material is transported out of the mill area by an automated coil handling system to the storage aisle.
Year of fee payment : 4. Year of fee payment : 8. Effective date : A system for processing steel strips in a hot strip mill includes an apparatus and method for removing the oxide layer in the finishing mill process such that the final thickness of the oxide layer is much less than previously possible. In order to reduce the thickness of the oxide layer, the invention provides for the removal of oxide scales from the surface of the steel strips at a distance in front of the working rolls of the finishing mill that minimizes the time the strip is exposed to ambient conditions after it is descaled and before it is received between the pair of working rolls.
The concept is similar to the rolling of dough. Rolling is classified according to the temperature of the metal rolled. If the temperature of the metal is above its recrystallization temperature, then the process is known as hot rolling. If the temperature of the metal is below its recrystallization temperature, the process is known as cold rolling.