Method of controlling oxygen deposition during decarbutization annealing on steel sheets
AssigneeKawasaki Steel Corporation
InventorsYoshinori Anabuki, Kazuo Kawamura, Yutaka Kosaka, Hirotake Ishitobi, Michio Komatsubara
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Abstract
A method for controlling oxygen deposition on steel sheets. The oxygen deposition value of a steel sheet measured after decarburization annealing remains at a constant value by controlling, in the decarburization annealing line for the steel sheet, the electrolytic electricity density in electrolytic degreasing equipment included in the decarburization annealing line.
Claims12
A method for controlling oxygen deposition on a steel sheet during decarburization annealing wherein electrolytic degreasing is performed before decarburization annealing, and oxygen deposition onto said steel sheets is measured after said decarburization annealing comprising maintaining said oxygen deposition at a substantially constant value by controlling the electrolytic electricity density during electrolytic degreasing.
A method for controlling deposition of oxygen onto a steel sheet during decarburization annealing comprising:
- cold rolling the steel sheet;
- and
- degreasing the cold rolled steel sheet with an electrolytic cleaner, wherein the current density of the electrolytic cleaner is varied to maintain the amount of oxygen deposited onto the cold rolled steel sheet at a constant value, the amount of oxygen deposited onto the cold rolled steel sheet being determined subsequent to both degreasing and decarburization.
Dependencies are inferred from the claim text.