Method of marking a hot steel slab

Details Method of marking a hot steel slab Method of marking a hot steel slab

1985-07-15

1986-11-18

Lawrence, Evan K.

Coating processes

Nonuniform coating

Deforming the base or coating or removing a portion of the...

29 81B, 72 39, 427287, B05D 300, B05D 102

Patent

active

046235612

ABSTRACT:
A method of applying a visible mark on a hot steel slab is described. The adherence of the marking composition to the slab surface can be improved by removing locally iron oxide therefrom, followed by the step of locally cooling down the surface to prevent secondary oxide growth. This is done by first directing a water jet of high pressure at an acute angle to the slab surface immediately followed by a gentle water stream of low pressure. After this conditioning of the surface, the mark can be sprayed thereon.

REFERENCES:
patent: 3543775 (1970-12-01), Bodnar
patent: 3826681 (1974-07-01), Vialle et al.
patent: 4233830 (1980-11-01), Houdion
"Automatic Hot Slab Spray Marker in Continuous Casting Lines", Sato et al, from Kawasaki Steel Technical Report No. 1, Sep. 1980, pp. 89-93.

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