Flaw detector for pipe employing magnets located outside the pip

Details Flaw detector for pipe employing magnets located outside the pip Flaw detector for pipe employing magnets located outside the pip

1978-12-12

1980-08-12

Rolinec, Rudolph V.

Electricity: measuring and testing

Magnetic

Magnetic sensor within material

324242, G01R 3312

Patent

active

042175488

ABSTRACT:
A detector for magnetically detecting flaws on the inner surface of a pipe of magnetizable material comprises a magnetizing assembly having exciting magnets and movable longitudinally along the interior of the pipe and a detecting assembly movable longitudinally along the exterior of the pipe. The magnetizing and detecting assemblies are opposite and close to each other through the wall of the pipe and movable longitudinally of the pipe in a synchronized manner to ensure highly accurate flaw detection.

REFERENCES:
patent: 1978252 (1934-10-01), Drake
patent: 2308159 (1943-01-01), Drummond et al.
patent: 2563254 (1951-08-01), Lewis
patent: 3209243 (1965-09-01), Walters et al.
patent: 3535623 (1970-10-01), Wood et al.
patent: 3693075 (1972-09-01), Forster
patent: 3872378 (1975-03-01), Shirawa et al.

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