Lip with exchangeable noses

Abstract

A rolled lip in which the form of attachment of the noses to the lip prevents the area of attachment to reach a maximum stress, thus reducing the risk of fractures in said area of attachment facilitating machining of the nose in which the lip has grooves projecting from the edge into the lip body; the noses have an area which forms a protrusion in which said protrusion is located in the rear half of the nose on the opposite side of the front; the attachment of the protrusion to the lip is welded all around it and forms one or two channels forming a weld filler area; the shape, quantity and distribution of the channels may vary independently using a channel on the lip or a channel under the lip or a channel on the lip and another under the lip simultaneously; the weld filler area may be above and/or below the lip; the protrusions of the noses fit in the grooves of the lip.

1 . A rolled lip in which the form of attachment of noses to the lip prevents the area of attachment to reach a maximum stress, thus reducing the risk of fractures in said area of attachment, wherein:
 the lip has a plurality of grooves projecting from an edge into a lip body;   the noses have an area which forms a protrusion, wherein said protrusion is located in a rear half of the nose on an opposite side of a front of the nose;   the protrusion is attached to the lip by a weld forming one or two channels around at least one of the plurality of grooves, forming a weld surrounding the rear half of the nose;   the weld being above and/or below the lip; and   the protrusions of the noses fit entirely within the grooves of the lip.   
     
     
         2 . A rolled lip according to  claim 1 , wherein the attachment of the protrusion to the lip includes welding using cored wire or a stick electrode. 
     
     
         3 . A rolled lip according to  claim 1 , wherein the lip is rolled or cast and the grooves are machined or oxy-cut in the lip. 
     
     
         4 . A rolled lip according to  claim 3 , wherein the grooves are carried out with semiautomatic oxy-cut or machining. 
     
     
         5 . A rolled lip according to  claim 1 , wherein the noses comprise steel.