本发明介绍了一种改进的热轧行星轧机的轧辊。在以前的热轧行星轧机的轧辊中(图4),支持辊11的周围设有许多小直径工作辊12。工作辊12随同支持辊11同向公转,同时沿箭头所示方向自转,因而一对行星辊B形成可变间隙。这种行星轧机的小直径工作辊能一次将厚板轧成薄板。工作辊自转的方向(图4)与板坯13的送进方向相反,因而对板坯作用了一种后推力。此力由送 The present invention introduces an improved roll for a hot-rolling planetary mill. In the roll of the conventional hot rolling planetary mill (FIG. 4), a plurality of small-diameter work rolls 12 are provided around the backup roll 11. The work roll 12 revolves in the same direction as the backup roll 11 while rotating in the direction of the arrow, so that the pair of planetary rolls B forms a variable gap. The small-diameter work rolls of this planetary mill can roll the slab once into thin sheets. The direction of rotation of the work roll (FIG. 4) is opposite to the feed direction of the slab 13, thus exerting a back pressure on the slab. This force by sending