| 摘要 |
Circular rotating heat treatment furnace consisting of a rotating furnace chamber to which are fitted the burners which also rotate having double walled hollow walls and floor through which cold air is circulated, the workpieces, one end of which only requires heating, being arranged on a ring with two offset sets of holes arranged in a circle. The bolts etc. are not mounted directly but are put into holder clamps which fit into the holes. - The air circulated through the walls is used for mixing with the fuel burnt in the burners.
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