Mitsubishi Jukogyo Kabushiki Kaisha

Muneo Moriya

Nobutaka Maeda

Keiichi Katayama

Shunji Omori

Tateo Tanimoto

Toshihiro Takemasa

Seiji Nishikawa

A method of controlling a tension levelling equipment for correcting residual distortions in an extension of strip including a series of input and output bridle roll means for rendering a tension upon the extension of strip extending between the input and output sides of a levelling mill station for smoothing out the distortions, and slipping clutch means connecting the bridle roll means with driving means allowing a slipping motion therebetween, which comprises the steps of measuring a current tension rendered upon the extension of strip at both the input and output sides of either of the input and output bridle roll means, and controlling the engaging torques of the slipping clutches in such a manner that a current slipping motion produced between the extension of strip and the bridle roll means may be nullified or eliminated according to the result of measurement of tensions, whereby it can remove all possible defects such as flaws and scratches in the surface of a strip product caused from the slipping motions as encountered during the passing through the tension leveler, thus contributing a substantial improvement in the surface condition and quality of the strip product.

Method of controlling a tension levelling equipment

In a method of rolling a strip between work rolls with small and large diameters, while tensioning and bending the strip, the diameter ratio of the small and large work rolls is chosen from the range of 1/1.5 to 1/10, at least one of the work rolls or of rolls in a group backing up the work rolls is driven, and the strip is rolled as it is forced through the work rolls while being bent toward or around either the small or large work roll at a strip entry-exit angle between 5.degree. and 30.degree..

Method of rolling strip

Growing community of inventors

Saiki, Japan

Muneo Moriya