Apparatus for detecting defects in a moving steel strip with a m

Details Apparatus for detecting defects in a moving steel strip with a m Apparatus for detecting defects in a moving steel strip with a m

1990-09-10

1992-02-18

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

Plural tests

73159, 324242, 324261, 324262, 340675, G01N 2783, G01R 3312

Patent

active

050897764

ABSTRACT:
A magnetic defect detector having a pair of rotatable cylinders made of nonmagnetic material which pinch a running steel strip therebetween, two pairs of bearings being engaged with the end parts of the pair of cylinders. A pair of stationary shafts are respectively housed in the cylinders, the end parts of which are engaged with the bearings. A yoke is housed in one of the cylinders, the free ends of which are placed near to the pinched strip, and a magnetizing coil surrounds the yoke. At least one sensor is housed in the other of the cylinders, and it is placed near to the pinched strip.

REFERENCES:
patent: 3662576 (1972-05-01), Girlatschek
patent: 3781662 (1973-12-01), Davis
patent: 3886445 (1975-05-01), Chiba et al.
patent: 4107606 (1978-08-01), Typpo et al.
patent: 4518919 (1985-05-01), Ishida
patent: 4519249 (1985-05-01), Hunt
patent: 4767987 (1988-08-01), Montgomery

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