What are the reasons for frequent wire breakage in wire drawing production?

1. During uninterrupted production, the sizing area of the wire drawing die may become larger due to normal wear and tear.

2. Due to quality issues with various rod materials. During the production process, there are irregular quality defects in the rod material, which cause the single wire to be broken by various unpredictable tension during wire drawing deformation. This situation is less common when the rod material is good.

3. Due to the unstable annealing current during production, the current suddenly increases, and the single wire is pulled off or fused by sudden strong current during the annealing process.

Solution:

Select different mold matching schemes based on different rod materials and constantly explore them in production. For example, in the production of copper rods produced by the upward drawing method, 8 drawing dies are required to draw 2.53mm single wires, while in the production of single wires with the same outer diameter, if rolling rods are used, an additional bridge die should be added during the mold configuration according to the requirements; Before production, it is necessary to conduct sufficient self inspection on the copper rod to be produced, timely detect quality defects in the copper rod, and find corresponding countermeasures according to different situations, or reduce the wire drawing speed, or eliminate defective parts in this section. During production, constantly observe whether the annealing current of wire drawing is normal, especially when it is just started, pay special attention to the change of annealing current, adjust the annealing current according to the change of line speed, and then make the annealing current slowly increase with the increase of line speed to ensure the normal operation of the equipment.