Steel with antimony addition

Details Steel with antimony addition Steel with antimony addition

1983-02-23

1984-11-20

O'Keefe, Veronica

Metal treatment

Compositions

Heat treating

148 3155, 148120, 148121, 148122, 148111, 148 12A, B21B 302, H01F 104

Patent

active

044837232

ABSTRACT:
A cold rolled steel strip contains alloying elements, such as Al and Si, which have an affinity for oxygen greater than that of iron. During annealing of the strip, these alloying elements undergo oxidation to form an internal oxidation layer adjacent the surface of the strip. Formation of such an internal oxidation layer in the cold rolled steel strip is impeded by adding antimony to the steel, and depletion of the antimony prior to annealing the cold rolled strip is minimized by minimizing annealing and pickling of the strip before the strip attains substantially its final thickness.

REFERENCES:
patent: 3908432 (1975-09-01), Ichiyama et al.
patent: 3932234 (1976-01-01), Imanaka et al.
patent: 3933537 (1976-01-01), Imanaka et al.
patent: 4174235 (1979-11-01), Fiedler
patent: 4204890 (1980-05-01), Irie et al.
patent: 4268326 (1981-05-01), Iwayama et al.
patent: 4280856 (1981-07-01), Inokui et al.

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