Method of producing thin steel sheets having an improved processability
AssigneeKawasaki Steel Corporation
InventorsSaiji Matsuoka, Susumu Satoh, Takashi Obara, Kozo Tsunoyama, Hideo Abe
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Abstract
Thin steel sheets having an improved processability are produced when a steel sheet or cast strip obtained through a continuous casting or strip caster process is subjected to a lubrication rolling step at a temperature of from Ar.sub.3 transformation point to 300.degree. C. and a rolling speed of not less than 1,500 m/min. By this method, the cold rolling step or cold rolling-annealing step can be omitted.
Claims20
A method of producing thin steel sheets having an improved processability, comprising a combination of a continuous casting step, a rough rolling step and a lubrication rolling step at a temperature of from Ar.sub.3 transformation point to 300.degree. C. and a rolling speed of not less than 1,500 m/min.
A method of producing thin steel sheets having an improved processability, comprising a combination of a continuous casting step, a rough rolling step, a finish hot rolling step and a lubrication rolling step at a temperature of from Ar.sub.3 transformation point to 300.degree. C. and a rolling speed of not less than 1,500 m/min.
A method of producing thin steel sheets having an improved processability, comprising a combination of a step of directly and continuously producing a strip of not more than 50 mm in thickness from molten steel through a strip caster process and a lubrication rolling step at a temperature of from Ar.sub.3 transformation point to 300.degree. C. and a rolling speed of not less than 1,500 m/min.
A method of producing thin steel sheets having an improved processability, comprising a combination of a step of directly and continuously producing a strip of not more than 50 mm in thickness from molten steel through a strip caster process, a finish hot rolling step and a lubrication rolling step at a temperature of from Ar.sub.3 transformation point to 300.degree. C. and a rolling speed of not less than 1,500 m/min.
A method of producing thin steel sheets having an improved processability, comprising a combination of a continuous casting step, a rough rolling step, a lubrication rolling step at a temperature of from Ar.sub.3 transformation point to 300.degree. C. and a rolling speed of not less than 1,500 m/min and an annealing step.
A method of producing thin steel sheets having an improved processability, comprising a combination of a continuous casting strip, a rough rolling step, a finish hot rolling step, a lubrication rolling step at a temperature of from Ar.sub.3 transformation point to 300.degree. C. and a rolling speed of not less than 1,500 m/min and an annealing step.
A method of producing thin steel sheets having an improved processability, comprising a combination of a step of directly and continuously producing a strip of not more than 50 mm in thickness from molten steel through a strip caster process, a lubrication rolling step at a temperature of from Ar.sub.3 transformation point to 300.degree. C. and a rolling speed of not less than 1,500 m/min and an annealing step.
A method of producing thin steel sheets having an improved processability, comprising a combination of a step of directly and continuously producing a strip of not more than 50 mm in thickness from molten steel through a strip caster process, a finish hot rolling step, a lubrication rolling step at a temperature of from Ar.sub.3 transformation point to 300.degree. C. and a rolling speed of not less than 1,500 m/min and an annealing step.
Dependencies are inferred from the claim text.