高速直进拉丝机拉丝生产出现频繁断丝的原因是什么？如何解决？What is the reason for frequent wire breakage in wire drawing during pr

直进式拉丝机是由多个拉拔头组成的连续生产设备，通过逐级拉拔，一次性地把钢丝、铜丝等冷拉到所需的规格，并将成品线材收卷，工作效率高，设备占地面积小。通过多台电机同时对金属丝进行拉伸，钢丝在前一卷筒上缠绕几圈后，直接进入下一拉丝模并缠绕在下一卷筒上，中间不通过任何过线导轮，因此对电机的同步性以及动态响应都有较高的要求。通过每一级的拉拔，线材的线径发生了变化，所以每个拉拔头工作线速度也发生变化。每个时刻通过拉模的金属线材秒流量体积不变，直进式拉丝机的各个拉拔头的工作速度就是基于这个原理，保证各个拉拔头线速度按比例同步运行。

The straight-in wire drawing machine is a continuous production equipment composed of multiple pulling heads.In order to perform high efficiency during the process.Through step-by-step drawing, steel wire, copper wire, etc. are cold-pulled to the required specifications at one time, and the finished wire is coiled, with high working efficiency and small footprint of the equipment. The wire is stretched at the same time by multiple motors. After the wire is wound on the previous reel for several turns, it directly enters the next wire drawing die and is wound on the next reel. There is no passing guide wheel through the middle, so there are high requirements for the motor synchronization and dynamic response. Through each level of drawing, the wire diameter of the wire changes, so the working line speed of each pull head also changes. The second flow volume of the metal wire passing through the pulling die remains unchanged at each moment. The working speed of each pulling head of the straight-in wire drawing machine is based on this principle to ensure that the line speeds of each pulling head are run simultaneously in proportion.

高速直进拉丝机拉丝生产出现频繁断丝的原因是什么？

1.拉丝模在不间断的生产中会由于正常磨损而使拉丝模的定径区变大。

2.各种杆材的质量问题。在生产过程中，杆材不规则地出现质量缺陷，这就使单丝在拉丝变形中被各种无法预测的张力拉断。此情况在杆材好时较少出现。

3.生产中退火电流的不恒定，电流忽然偏高，单丝在退火过程中被拉断或是被突变的强电流熔断。

解决方法：在生产前，要对欲生产的铜杆做充分的自检，及时发现铜杆的质量缺陷，根据不同情况及时找到相应对策，或降低拉丝速度，或将此段有缺陷的剔除。生产中不断地观察拉丝的退火电流是否正常，尤其在刚刚启动的时候，特别要注意退火电流的变化，要根据线速的变化来调节退火电流的大小，进而使退火电流慢慢地随着线速的增加而变大，保证设备的正常运行。