System for online-detection of the transformation value and/or f

Details System for online-detection of the transformation value and/or f System for online-detection of the transformation value and/or f

1984-10-09

1987-08-11

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

With means to create magnetic field to test material

324225, 324227, G01N 2772, G01R 3312

Patent

active

046864717

ABSTRACT:
A system for online-detection of a transformation value and/or a flatness of a steel or a magnetic material includes: an exciting coil disposed at either side of the plate-shaped steel or magnetic material and capable of generating alternating magnetic fluxes by alternating current excitations; two or more detecting coils arranged on the same side as the exciting coil and at positions different in distance from the exciting coil, and mutually induced with the exciting coil; and an arithmetic unit for obtaining the transformation value and the flatness of the steel or the magnetic material or either one of those from a difference between detection signals generated from a difference in values of interlock magnetic fluxes in the respective detecting coils. The transformation value and the flatness of the steel or the flatness of the magnetic material can be detected with high accuracy.

REFERENCES:
patent: 2563254 (1951-08-01), Lewis
patent: 2810880 (1957-10-01), Buccicone
patent: 3060377 (1962-10-01), Schmidt
patent: 3086168 (1963-04-01), Buckner
patent: 3197693 (1965-07-01), Libby
patent: 3434046 (1969-03-01), Wilson et al.

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