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Composite article having a tubular sheath containing a compacted material, for the treatment of liquid metals, and process for the production of said article
Composite article having a tubular sheath containing a compacted material, for the treatment of liquid metals, and process for the production of said article
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机译:具有用于处理液态金属的管状外套的复合制品和制造该制品的方法,该管状护套包含压实的材料
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摘要
The invention concerns a composite article with a tubular metal sheath containing a compacted powdery or granular material.P PThe article is of substantially circular cross section (153). Its sheath comprises at least one closed fold (154), the fold edge (156) of which is within the compacted material. The article is produced by forming an open fold along a generatrix of a circular metal sheath containing a non- consolidated powdery or granular material and then constricting the sheath so as to close the fold.PPThe article is used for the treatment of meal baths, for example for the treatment of steel in a ladle.
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