For the back strands and loose strands of stranded wire products: ● Adjust the pay-off tension to make it uniform. ● Change the die, so that the wire core is not loose in the die hole, pay attention to the bell mouth of the die, if the bell mouth is damaged, it cannot be used. ● Adjust the position of the die holder to make the twisting angle of the strand reasonable.● If the stranding pitch is large, it should be appropriately reduced.
Single wire grooves or surface defects in stranded wire
Causes: Defects such as pits, scars, triangular cracks, and slag inclusions on the surface of the single wire are mainly caused by the material. Of course, the surface of the wire core is broken, and it is not ruled out that the hole type of the wire drawing die is unreasonable. A case-by-case analysis is required.
The grooves on the surface of the wire core are continuous, which is generally caused by the wire drawing. The lubricating conditions of the wire are deteriorated, and the surface is caused by sticking to aluminum.