| 摘要 |
The undersides of sections of horizontal pipes in heat treating furnaces are covered with refractory insulation material by a molding process. An air vibrator is used to agitate the refractory material mix as the mold is advanced toward the pipe. A liner is used to retain the mix against the pipe as it hardens, whereupon the rigid part of the mold may be immediately reused. The areas of the pipe left exposed are then covered in any suitable fashion such as by troweling.
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