Laser cutting method, laser cutting facility, and cold rolling method for steel strip, and method of manufacturing cold rolled steel strip
AssigneeJfe Steel Corporation
InventorsNoriki Fujita, Yukihiro Matsubara, Takayuki Fukunaga
Life of this patent
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Abstract
A laser cutting method for a steel strip, includes cutting an end in a width direction of the steel strip including a joint obtained by joining a rear end of a preceding steel strip and a front end of a following steel strip by using a laser beam, wherein the steel strip is cut such that an interval between pieces of dross having an aspect ratio of 1.0 or more is set to 1.0 mm or more and an interval between dross having an aspect ratio of 1.0 or more and dross having an aspect ratio of less than 1.0 is set to 1.0 mm or more in the end in the width direction after cutting.
Claims6
1-5. (canceled)
A laser cutting method for a steel strip, comprising cutting an end in a width direction of the steel strip including a joint obtained by joining a rear end of a preceding steel strip and a front end of a following steel strip by using a laser beam,
- wherein the steel strip is cut such that an interval between pieces of dross having an aspect ratio of 1.0 or more is set to 1.0 mm or more and an interval between dross having an aspect ratio of 1.0 or more and dross having an aspect ratio of less than 1.0 is set to 1.0 mm or more in the end in the width direction after cutting.
Dependencies are inferred from the claim text.