Device for detecting cracks in steel slabs leaving continuous ca

Details Device for detecting cracks in steel slabs leaving continuous ca Device for detecting cracks in steel slabs leaving continuous ca

1983-12-28

1986-04-29

Hall, Carl E.

Metal working

Scale remover or preventor

Scraper or scalper

29 81A, 324243, B08B 302, G01R 3312

Patent

active

045847460

ABSTRACT:
A device for detecting cracks in steel slabs leaving continuous casting, which comprises two crack detecting units placed on either side of the passage of a slab leaving continuous casting and two descaling and cooling units located upstream of the detection units. Each detection unit comprises a mobile frame and a head which slides vertically with respect to the frame and which bears one vertical sensor and three horizontal sensors. The sensors are induction coils placed in a container which is surrounded by a forwardly open metal casing. One application of the device is the automatic switching of defective slabs towards a reprocessing unit.

REFERENCES:
patent: 2250460 (1941-07-01), Barnes et al.
patent: 3694735 (1972-09-01), Mester
patent: 3886445 (1975-05-01), Chiba et al.
patent: 4041379 (1977-08-01), Karlsson
patent: 4258319 (1981-03-01), Shimada et al.
patent: 4269052 (1981-05-01), Imai et al.
patent: 4461995 (1984-07-01), Harris

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