| 摘要 |
Apparatus for shielding molten metal during teeming, characterized in that it comprises a first arm pivotably mountable on a carriage for carrying a ladle, a second arm pivotably mountable on said carriage, a first cylinder open at both ends, connected to said first arm and having one end which, during teeming, is urged against the pouring spout on the bottom of a ladle mounted on said carriage, a second cylinder open at both ends, connected to said second arm, and moveable relative to said first cylinder to vary the distance between said first and second cylinders, and means to introduce a shielding gas into the interior of said cylinders, the arrangement being such that, is use, after the pouring spout of a ladle is arranged over a pouring trumpet, said arms can be moved so that said first and second cylinders define a passageway between the pouring spout on the ladle and the pouring trumpet into which shielding gas can be introduced via said means to inhibit air coming into contact with molten metal as it passes through said passageway. |
