| 摘要 |
<p>The present invention relates to a refining method for molten steel which includes: a step of primarily putting a portion of the total input amount of a calcium wire which is put to remove filtered molten steel at a point that the minute control of molten steel is completed in secondary refining; a step of performing Ar bubbling for a set time after the calcium wire is primarily put; and a step of secondarily putting the residual calcium wire after the Ar bubbling and performing Ar bubbling. [Reference numerals] (AA) Start; (BB) End; (S10) Put a calcium wire primarily; (S20) Ar bubbling; (S30) Ar bubbling after secondarily putting the residual calcium wire</p> |
