Method of rolling railroad-rails and steels of similar shape by

Details Method of rolling railroad-rails and steels of similar shape by Method of rolling railroad-rails and steels of similar shape by

1980-07-25

1982-08-17

Gilden, Leon

Metal deforming

By use of roller or roller-like tool-element

Included in roller-cluster

72 8, 72234, B21B 1310

Patent

active

043443109

ABSTRACT:
A method for multiple pass rolling of railroad-rails in a universal rolling mill having horizontal rolls and vertical rolls, comprising measuring the axial displacement of the horizontal rolls and the radial displacement of the vertical rolls when a blank passes through a roll caliber defined by the horizontal and vertical rolls. The measurements include the relation of the displacement of the horizontal and vertical rolls and the difference of the rolling forces acting on the rolls each of the two vertical rolls. The values of the rolling forces of the vertical rolls during the intented passes, can be calculated, by arithmetic operations, independently of the above mentioned measuring so as to estimate the axial displacements of the horizontal rolls and radial displacements of the vertical rolls before the rolling by consequent pass is actually performed. On the basis of the calculated values and of the above mentioned relation, the roll gap settings between the horizontal rolls and the vertical rolls can be made that permits the controlled consecutive passes by a universal rolling mill.

REFERENCES:
patent: 3342053 (1967-09-01), Stammbach
patent: 3583193 (1971-06-01), Kishikawa
patent: 3901059 (1975-08-01), Nakajima
"On Reconstruction of Rail Mill & Newly-Developed Rails of Nippon Steel Corporation," Nippon Steel Technical Report, Jun. 1973, pp. 1-21.

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