Method for improving lubrication in rolling
AssigneeOutokumpu Oyj
InventorsKari Huttunen, Jukka Kömi, Raimo Levonmaa, Pentti Saxlund
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Abstract
The invention relates to a method for improving the lubrication of the edges and ends of objects to be rolled, particularly hot rolled, said objects consisting of essentially planar surfaces and being for example metal sheets or strips. According to the invention, the lubricating medium is fed so that it is applied on the edge area of the object to be rolled (1, 21, 31), essentially during the whole rolling pass, and so that lubricating medium is applied, when beginning or finishing a rolling pass, essentially along the whole width of the object to be rolled (1, 21, 31), in the immediate vicinity of the ends of the object to be rolled.
Claims16
An improved method of rolling an object having two essentially planar opposite main surfaces, each main surface having two opposite longitudinal edge regions and a longitudinal medial region between the edge regions, employing a rolling mill having working rolls defining a rollgap, said method including rolling the object in at least one rolling pass and applying lubricating medium to the object as the object enters the rollgap, wherein the improvement comprises:
- applying lubricating medium to the edge regions of the main surfaces of the object during substantially the entire rolling pass, and
- applying lubricating medium to the medial regions of the respective main surfaces of the object substantially only at beginning and end of the rolling pass,
- whereby lubricating medium is applied over substantially the entire width of the main surfaces substantially only in end regions of the main surfaces.
Dependencies are inferred from the claim text.