| 摘要 |
A method for purifying and producing dense uniform blocks of high-melting material such as alumina is provided. The blocks may have a predetermined diameter and form such as a cylindrical shape. A substrate is placed under a plasma torch and alumina particles or other high melting materials are heated and melted by the plasma torch is then deposited onto the substrate as it moves in three independent directions including rotation along its vertical axis, back and forth translation motion along a horizontal axis, and pull down motion along the vertical axis.
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