| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for manufacturing powder for continuous casting with which in the case of continuously casting a Si-killed steel having <0.015 mass% Al content, the occurrence of a predict signal to the restrictive break-out can be lessened, and a method for continuously casting a steel by using this powder for continuous casting. <P>SOLUTION: The method for manufacturing the powder for continuous casting, is performed, with which in the case of melting and solidifying the raw material for powder, this raw material is cooled and pulverized by injecting the air without using the water. In the continuous casting by using the powder for continuous casting, manufactured with the method, the generation of bubble into the powder film is reduced in the continuous casting of the Si-killed steel having less Al content and the heat-conducting amount from the solidified shell to a mold wall, is increased and as the result, since the frequency of the occurrence of the predict signal to the restrictive break-out can be reduced, the frequency of the occurrence of a non-stationary part in the quality caused by the fluctuation of the casting speed, is reduced and also, the frequency of occurrence of the break-out can be reduced. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
