对于中阀辊道，除了要求对中之外，为了进行精轧人口温度控制，要求轧件能在中间辊道上往复运动，并且为了提高末架粗轧机和精轧机的速度控制精度，以前常用的集体传动方式正在被单独传动方式代替。

For the valve roller, in addition to the requirements of, in order to finish rolling temperature requirements of population, in the middle of the roller on the reciprocating motion, and in order to improve the frame at the end of roughing mill and finishing mill speed precision, instead of the commonly used collective tran***ission mode being separate tran***ission mode.

主要工作辊道紧靠工作机架，它将轧件喂入轧机和接受轧出轧件，因此它是经常参加工作的辊道，故称主要工作辊道。

轧件长度超过主要工作辊道时，由另一组工作辊道参加工作，这一组辊道叫辅助工作辊道，或称为延伸辊道。

The main work table is close to the work rack. It will feed the rolling piece into the rolling mill and accept rolling and rolling parts. Therefore, it is a roller table that often works. So it is called the main work roller table.

When the length of the rolled piece exceeds the main work roller Road, another group of working rollers is involved in the work. This group of rolls is called the auxiliary work roller, or the extension roller.

新式的高速热轧机及连续式热轧机一般都采用单独传动系统。单独传动优点很多，它的制作简单，由于不需要传动齿轮及传动轴，从而大大简化了辊道的机械结构，使装拆、检修和润滑等问题也都大大简化了，而且对辊子相互位置之准确度的要求也没有集体传动时那样严格。单独传动优点很多，它的制作简单，由于不需要传动齿轮及传动轴，从而大大简化了辊道的机械结构，使装拆、检修和润滑等问题也都大大简化了，而且对辊子相互位置之准确度的要求也没有集体传动时那样严格。

The new type of high speed hot rolling mill and continuous hot rolling mill generally use a separate tran***ission system. Individual drive has many advantages, making it simple, because it does not need the tran***ission gear and the tran***ission shaft, which greatly simplifies the mechanical structure of the roller, the assembly and disassembly, maintenance and lubrication problems are greatly simplified, and the accuracy of the location of each roller requirements are not as strict collective tran***ission.

包胶滚筒的寿命是比较长的，像这种要求就是要寿命长的，因为包在滚筒上边也不是很方便取下来呀，所以这就又验证一点.

The life of the rubber drum is long, and the requirement is long life, because it is not very convenient to take the package on the top of the drum, so this will verify the first point again.