| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for bloom-rolling a steel ingot, which method can stably shorten the longitudinal length of a crop to be produced at the longitudinal end portion of a produced steel billet, and can easily carry out the shearing and removing work of the crop because of the stability of the method, and can improve a yielding ratio by the shortened amount of the crop. SOLUTION: In the method for bloom-rolling the steel ingot after pressing the longitudinal end portion of the steel ingot, the pressing operation is carried out so as to satisfy the following conditions, where L shows the longitudinal contact length (mm) of press anvils on the steel ingot in pressing the steel ingot by bringing the press anvils into contact with both longitudinal end portions of the steel ingot, and H shows the thickness (mm) of the longitudinal end portions of the steel ingot between both press anvils in pressing the steel ingot by bringing the press anvils into contact with both longitudinal end portions of the steel ingot. COPYRIGHT: (C)2008,JPO&INPIT
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