Patent ID: 6050122
Filing Date: 2000-04-18
Classification: B21B

Abstract:
A method of separating a steel bar into a series of separated sections comprising:subjecting said steel bar to a rolling operation to form a series of spaced opposing parallel grooves in said bar to produce a plurality of elements of elongated cross sectional shape, such that each element remains joined to the adjacent element at each groove by a narrow web, each element having an upper and lower surface, andpassing said bar so grooved between a pair of cooperating non interlocking rolls, each having a series of spaced projecting rings formed on each roll to contact said upper and lower surfaces of each element at predetermined locations to produce a slight twist in each element as it passes between said cooperating rolls so that each element twists in the same angular direction so as to fracture each narrow web, andproducing a plurality of separated elements.