Copper wire in the drawing process of oxidation, generally may be caused by the following reasons:

1. The temperature of the cooling water in the sealed chamber is too high, exceeding 40℃, so that the cooling effect of the copper wire in the sealed chamber can not be achieved.Copper wire after annealing temperature is still very high, high temperature encountered oxygen in the air and oxidation.

2. The content of saponification liquid in the coolant in the sealing chamber is not enough, which will increase the friction between the copper wire and the regulating wheel, and then make the temperature of the copper wire again.The rising degree causes the surface oxidation of the copper wire.

3. The water pressure and water quantity of the cooling water in the sealed chamber are insufficient, so that the copper wire can not achieve satisfactory cooling effect

Solutions:

1. Frequently check whether the cooling and circulating water equipment is operating normally and whether the cooling effect is normal;

2. Substantial substances that can increase the concentration of saponification liquid are added in the sealed chamber at certain intervals, so as to change the content of saponification liquid in the cooling water and ensure the normal operation of the monofilament on the regulating wheel;

3. Regularly check whether the water pressure of circulating water is normal, and constantly change the pressure and amount of cooling water into the sealed chamber according to the change of water pressure during production