| 摘要 |
A transport device in a preheating furnace for treating metallic material like bars, billets, blooms and the like of light metal, such as aluminum and its alloys, comprises a slide-in unit adapted to be pushed into and pulled out of the furnace chamber. The slide-in unit supports furnace rollers or slides for the material to be preheated. The slide-unit itself is displaceable preferably by sliding or rolling on rails. With the transport device the thermal efficiency is improved, as after charging the furnace all parts of the transport device are contained in the furnace chamber which may be in this manner completely sealed for the heat treatment of the material. Moreover, assembly and disassembly of the furnace rollers or slides is easy.
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