万能轧钢机运行中需要避免的事项 万能轧钢机在生长过程中,穿带增加张力是很关键的重要环节,万能轧钢机展平辊的平行升降是保证“穿带”、“加张”顺利进行的重要条件，为此要求万能轧钢机展平辊的两个升降油缸应高度同步． 万能轧钢机采用的是分流集流阀液压同步，从使用实践看，该阀寿命较低易出故障，工作可靠性差；在万能轧钢机设计中改为齿轮齿条机械同步．这种同步方式使用很多，比较成熟，但在万能轧钢机上要想实现这一点须解决以下困难—不能改变原相邻设备的结构尺寸，布置空间极其狭窄，避免万能轧钢机轧辊冷却喷嘴配管对展开辊升降的干涉;同步机械本身的安装、检修和拆换应简单．以上促成了该结构的特殊性．万能轧钢机轧制中为了使带材对准轧制中心线，须使开卷侧带卷随套筒作轴向串动调整，而在轧制终了卸套筒时又须将套筒对准轧制中心线，以便能够将卸下的套筒沿进料轨道退离卷取中心，万能轧钢机通过限位开关按指令自动完成套筒”对中”．

Matters to be avoided during the operation of universal steel rolling mills: During the growth process of universal steel rolling mills, the threading of belts to increase tension is a crucial and important step. The parallel lifting of the flattening rolls of universal steel rolling mills is an important condition to ensure the smooth progress of "threading" and "tensioning". Therefore, it is required that the two lifting cylinders of the flattening rolls of universal steel rolling mills should be highly synchronized. The universal steel rolling mill adopts the hydraulic synchronization of the flow divider and flow collector valves. From the perspective of practical use, this valve has a relatively short service life, is prone to failure, and has poor working reliability. In the design of universal steel rolling mills, it was changed to gear rack mechanical synchronization. This synchronous method is widely used and relatively mature. However, to achieve this on a universal steel rolling mill, the following difficulties must be addressed - the structural dimensions of the original adjacent equipment cannot be changed, the layout space is extremely narrow, and the interference of the cooling nozzle piping of the universal steel rolling mill's rolls on the lifting of the unfolding rolls must be avoided. The installation, maintenance and replacement of the synchronous machinery itself should be simple. The above contributes to the particularity of this structure. During the rolling process of the universal steel rolling mill, in order to align the strip with the rolling centerline, the strip on the uncoiling side must be axially adjusted along with the sleeve. When the sleeve is removed at the end of the rolling process, it must also be aligned with the rolling centerline so that the removed sleeve can be retracted from the coiling center along the feeding track. The universal steel rolling mill automatically completes the "centering" of the sleeve through the limit switch as instructed.

      为了防止万能轧钢机在锥头松开时将套筒拉偏甚至无法脱开的现象产生，在开卷侧套筒两端设置了升降挡块．在正常万能轧钢机轧制及套筒进行轴向串动时挡块处于降下位置，只有锥头松开卸套筒时挡块才提前升起．该升降挡块结构简单巧妙，万能轧钢机采用单作用气缸推动，在电气控制上与开卷机锥头松开动作联锁．万能轧钢机的操作使用得当,是保证质量的前题。

To prevent the universal steel rolling mill from pulling the sleeve off course or even preventing it from disassembling when the cone head is released, lifting stop blocks are set at both ends of the uncoiling side sleeve. During the normal rolling process of the universal steel rolling mill and the axial movement of the sleeve, the stop block is in the lowered position. Only when the cone head is released to remove the sleeve does the stop block rise in advance. This lifting stop block has a simple and ingenious structure. The universal steel rolling mill is driven by a single-acting cylinder and is electrically interlocked with the conical head release action of the uncoiler. Proper operation and use of universal steel rolling mills are the prerequisites for ensuring quality.