Strip preparation rollers

摘要

An improvement in a continuous rolling mill for forming flat steel strip into tubing. The improvement is a strip preparation station including upper and lower composite roller systems. Each system has end rollers which define a pass path for the strip. The lower end rollers have a support surface for engaging the lower surface of the strip and an outer pocket with a lower transition surface extending between the support surface and the outer pocket. Each of the upper end rollers has an engagement surface for contacting the upper strip surface and an outer flange which terminates below the level of the support surface and extends into the pocket. Each upper end roller has a bevelled working surface adjoining the engagement surface and overlying at least a portion of the transition surface and a portion of the support surface for cold working the irregularities of the strip. A method of preparing a strip for formation into a tube in a continuous rolling mill is also disclosed.