Method of gauging and controlling workpiece profile in a rolling

Details Method of gauging and controlling workpiece profile in a rolling Method of gauging and controlling workpiece profile in a rolling

1983-06-08

1985-08-20

Combs, E. Michael

Metal deforming

With use of control means energized in response to activator...

Including plural sensors or sensor responsive to comparison...

B21B 3702

Patent

active

045356149

ABSTRACT:
Disclosed is a method of gauging the diameter of a moving bar or like workpiece in a rolling mill comprising the steps of continuously gauging diameters at peripheral positions of the workpiece by a diameter gauge adapted to continuously rotate around the workpiece, and computing and displaying a roll-free diameter Df together with a maximum diameter Dx and a minimum diameter Dn of the workpiece, other than the diameter Df, during every half rotation of the diameter gauge. Also disclosed is a method of controlling the size of such a workpiece comprising the steps of controlling the roll gap of a No. i rolling stand on the basis of the thus computed maximum diameter Dx and minimum diameter Dn of the workpiece so as to attain equality between the value of Dn+(Dx-Dn)/2 and the desired diameter D, and controlling the interstand tension or the roll gap of a No. (i-1) rolling stand so as to maintain the value of Df constant between the values of Dx and Dn.

REFERENCES:
patent: 3526113 (1970-09-01), McNaugher
patent: 3650135 (1972-03-01), Skelton et al.
patent: 4139890 (1979-02-01), Yerkes et al.

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