Method for detecting the depth of cracks in rolls used for trans

Details Method for detecting the depth of cracks in rolls used for trans Method for detecting the depth of cracks in rolls used for trans

1980-04-25

1982-08-24

Howell, Kyle L.

Measuring and testing

With fluid pressure

Dimension, shape, or size

73104, 116208, G01M 326

Patent

active

043454577

ABSTRACT:
A method which can readily and accurately detect the depth of cracks in the rolls for transferring hot steel ingot blooms is disclosed. In operation, a fluid of a desired pressure is fed into a plurality of elongated holes formed in the rolls, such elongated holes being disposed in a direction parallel to and along the axis of the rolls and also equidistantly below the round surface of the roll. When cracks occur and reach the elongated holes, the fluid leaks through cracks from the elongated holes and such leakage causes a change in the amount of flow of the fluid. Thereby the cracks can be readily detected by measuring such change of fluid flow by a suitable known detector.

REFERENCES:
patent: 2185315 (1940-01-01), Rogatchoff
patent: 3228735 (1966-01-01), Stewart
patent: 3490268 (1970-01-01), Hand et al.
patent: 3667862 (1972-06-01), Parr
patent: 3972223 (1976-08-01), Torghele
patent: 4104906 (1978-08-01), Oertle
patent: 4135386 (1979-01-01), Peterson et al.

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