Metal treatment – Process of modifying or maintaining internal physical... – Chemical-heat removing or burning of metal
Patent
1975-07-03
1976-09-21
Dean, R.
Metal treatment
Process of modifying or maintaining internal physical...
Chemical-heat removing or burning of metal
148 13, 148156, 432 5, 432 11, C21D 946
Patent
active
039817547
ABSTRACT:
A method for avoiding irregularities in the surface of heavy steel sheet when heating or heat-treating such sheet by exposing both flat sides thereof to heat in a furnace. The sheet is transported endwise in the furnace in a substantially horizontal direction in a plane inclined with respect to the vertical and transverse to the furnace by a sheet supporting device comprising a roller path engaging one flat side of the sheet to sustain only part of the weight of the sheet and a further supporting means engaging the lower edge of the sheet. The angle of inclination of the steel sheet is selected so that the pressure exerted by the sheet perpendicularly against the rollers of the roller path is at most equal to the pressure that would be exerted by a 12 to 15 mm thick steel sheet via one flat side thereof against a similar, although horizontally arranged roller path, thereby avoiding the agglomeration of scale on said one flat side of the inclined sheet and the rollers of the roller path. The remaining portion of the weight of the inclined steel sheet is taken up by said further supporting means.
REFERENCES:
patent: 3215420 (1965-11-01), Bottenhorn
patent: 3291954 (1966-12-01), Scheffler
patent: 3655460 (1972-04-01), Hayden et al.
Dean R.
Granges Engineering AB
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