Abb Ab

Dag Sollander

Mats Olov Olsson

A method and apparatus for controlling the dimensions of an elongated material rolled in a rolling mill comprising at least two mill stands arranged after each other, each of said stands comprising two spaced rolls, said elongated material being fed between the rolls of each stand by rotating the rolls, wherein the material is subjected to stresses in the longitudinal direction thereof during the rolling operation. A rear portion of said material is subjected to an additional tension substantially in the longitudinal direction of the material when a rear end of the material is in the vicinity of a first stand and has not yet passed said stand.

Method and a device for controlling the dimensions of an elongated material rolled in a rolling mill

A method of controlling a rolling mill comprising at least two mill stands ( ) arranged after each other, wherein a first stand ( ) is arranged upstream of a second stand ( ). Each of said stands comprises two spaced rolls ( ). An elongated material ( ) is fed between the rolls of each stand by rotating the rolls. The width of the material ( ) is measured at a location downstream of said second stand ( ), and if the measured width is not within predefined first upper and lower limit values, an interstand tension between said first ( ) and said second stand ( ) is adjusted to a value corresponding to the deviation of the measured width from said predefined limit values in order to control the width of said material ( ), to be within said first upper and lower limit values.

Growing community of inventors

Västerås, Sweden

Dag Sollander