Angle-profile rolling method and apparatus

Abstract

A rolling apparatus for rolling angle profiles from rolling stock has upper and lower horizontal profile rolls rotatable about respective parallel upper and lower axes and together defining an open or closed roll gap that lies in a rolling plane perpendicular to a travel direction of the rolling stock. At least one pair of nonhorizontal edging rolls laterally compress the rolling stock and define a rolling plane extending perpendicular to the travel direction of the rolling stock. The rolling plane defined by the profile rolls and the rolling plane defined by the pair of edging rolls are not coplanar with each other. This rolling stand can do angle rolling in reversing and also continuous operating mode.

We claim: 
     
         1 . A rolling apparatus for rolling angle profiles from rolling stock, the apparatus comprising:
 upper and lower horizontal profile rolls rotatable about respective parallel upper and lower axes and together defining an open or closed roll gap that lies in a rolling plane perpendicular to a travel direction of the rolling stock; and   at least one pair of nonhorizontal edging rolls that laterally compress the rolling stock and define a rolling plane extending perpendicular to the travel direction of the rolling stock, the rolling plane defined by the profile rolls and the rolling plane defined by the pair of edging rolls are not coplanar with each other.   
     
     
         2 . The rolling apparatus defined in  claim 1 , wherein viewed in the travel direction of the rolling stock, the rolling plane defined by the pair of edging rolls is downstream of the rolling plane of the profile rolls. 
     
     
         3 . The rolling apparatus defined in  claim 1 , wherein, relative to the travel direction of the rolling stock, the rolling plane defined by the pair of edging rolls is upstream of the rolling plane of the profile rolls. 
     
     
         4 . The rolling apparatus defined in  claim 1 , wherein the apparatus can be used for continuous or reversible rolling. 
     
     
         5 . The rolling apparatus defined in  claim 1 , further comprising:
 a common stand carrying both the profile and edging rolls.   
     
     
         6 . The rolling apparatus defined in  claim 1 , wherein the angle profile has a cross section with identical legs. 
     
     
         7 . The rolling apparatus defined in  claim 1 , wherein the angle profile has a cross section with unequal legs. 
     
     
         8 . The rolling apparatus defined in  claim 1 , wherein the at least one pair of edging rolls can be positioned at a spacing from each other that is smaller than an axial barrel dimension of the profile rolls. 
     
     
         9 . The rolling apparatus defined in  claim 1 , wherein the edging rolls have over at least part of their axial lengths shapes that are designed in pairs of similar shape. 
     
     
         10 . The rolling apparatus defined in  claim 9 , wherein the angle profile has a leg tip radius shape with natural or rounded edges. 
     
     
         11 . The rolling apparatus defined in  claim 1 , wherein the edging rolls can be positioned independently of each other can be positioned with respect to the rolling stock such that rotation axes of the edging rolls have an angular offset of up to 90° to the respective longitudinal axes of the profile rolls. 
     
     
         12 . A compact or tandem group, comprising at least one rolling apparatus defined in  claim 1 . 
     
     
         13 . In a method of making angle profiles using a rolling apparatus having
 an upper and a lower horizontal profile roll rotatable about respective parallel upper and lower axes and together defining an open or closed roll gap that lies in a rolling plane perpendicular to a travel direction of the rolling stock; and   at least one pair of nonhorizontal edging rolls that laterally compress the rolling stock and define a rolling plane extending perpendicular to the travel direction of the rolling stock, the rolling plane defined by the profile rolls and the rolling plane defined by the pair of edging rolls are not coplanar with each other,   the step of, prior to or after passing the rolling stock through the horizontal profile rolls, deforming the rolling stock by at least one pair of nonhorizontal edging rolls.   
     
     
         14 . The method defined in  claim 13 , wherein when using profiled edging rolls, the entire forming process of the rolling stock including finish rolling after rough rolling takes place in a rough rolling stand by the horizontal profile rolls and the edging rolls and by using a pair of horizontal edging rolls. 
     
     
         15 . The method defined in  claim 13 , wherein the entire forming process of the rolling stock including finish rolling after rough rolling takes place in a rough rolling stand by the horizontal profile rolls and the edging rolls, and by using a finishing stand.