Solutions to common problems in commissioning operation of Copper Wire drawing machine (practical)

Copper wire drawing machine debug common problem solution (practical) anti-oxidation copper conductor cable control method, the mass of the copper wire production is the cable manufacturing enterprises are concerned, because the quality and efficiency of drawing directly affects the process after the production process, but also play a significant role in the quality of cables, In the production of wire drawing machine often appear the following problems.

Accurate control of outer diameter deviation of products

Due to the continuous production of copper wire drawing equipment, the speed of wire drawing will gradually be out of sync with annealing. When drawing, due to the speed of traction, the diameter of the wire appears intermittent and irregular large and small phenomenon. The reasons for this phenomenon are as follows:

1, line tension on the wheel is not stable, the production workshop USES may be more pressure, which can cause wire drawing machine age when the pressure of the pump is small, it also makes a store of wire tension is not constant, due to the line speed is constant, this makes the drawing by pulling force is not constant value, which can cause monofilament diameter deviation can't accurate control.

2, the shake of the copper wire in the annealing wheel, which makes the copper wire in the state of loose and tight annealing, annealing current density is large and small, and the strength of the copper wire at a higher speed is relatively low, so it is easy to cause the copper wire on the annealing wheel ignition, the surface of the copper wire due to the effect of sparks and uneven diameter.

3, the main motor gear box caused by long-term use of wear, which can make the drawing speed and traction speed and line speed do not match, so as to form a single wire drawing.

The measures：The wire storage device for good lubrication, to avoid its high-speed operation of the line caused by the reverse friction force and then make the line thin; Adjust the tension of the line, so that the drawing stroke is always close to the annealing wheel; Ensure the integrity of the anneal ring, avoid the surface defects of the ring and make the anneal current unstable.

According to the actual situation of the wire drawing machine to re-mold drawing machine: According to the principle of wire drawing, anneal wheel speed/constant speed wheel speed = forward slip coefficient by the metering/annealing wheel diameter, diameter of the metering and annealing the diameter of the wheel is known, and the metering and annealing wheel speed can also be measured, the forward slip coefficient can be obtained, by this wire drawing machine can slip coefficient to deserves to die, in this way can match the mold meet the requirements.

Causes of surface oxidation of single wire drawn by wire drawing machine

1, the temperature of the cooling water in the sealed chamber is too high, more than 40℃, so the sealed chamber can not get the required cooling effect on the monofilament, resulting in the temperature of the monofilament is still very high after annealing, and the oxygen in the air is oxidized at high temperature.

2, the saponification liquid content of the coolant in the sealed chamber is not enough, which will increase the friction between the monofilament and the regulating wheels, and then make the temperature of the monofilament rise again, resulting in the oxidation of the surface of the monofilament.

3. The water pressure and amount of cooling water in the sealed chamber are not enough, so that the monofilament can not achieve satisfactory cooling effect.

The measures：Check regularly whether the cooling circulating water equipment is running normally and whether the cooling effect is normal; In the sealed chamber at a certain interval of time can be added to improve the concentration of saponification liquid, so as to change the content of saponification liquid in cooling water, to ensure the normal operation of monofilament on the regulating wheel; Check regularly whether the circulating water pressure is normal, and change the pressure and quantity of cooling water entering the sealed chamber according to the change of water pressure during production.

Solution Frequent wire breakage in drawing production

1. The sizing area of the drawing die will become larger due to normal wear and tear in the continuous production.

2, all kinds of rod quality problems, in the production process, rod quality defects irregularly appear, which makes the monofilament in drawing deformation is broken by all kinds of unpredictable tension. This situation appears less when the rod material is good.

3, the production of the annealing current is not constant, the current is suddenly on the high side, the monofilament in the annealing process is pulled off or the mutation of the strong current fuse.

The measures：Before production, the copper rod to be produced should be fully self-checked to find the quality defects of the copper rod in time and find corresponding countermeasures according to different situations, or reduce the wire drawing speed, or remove the defective parts in this section. In the production of continuous observation of wire drawing annealing current is normal, especially when just started, special attention should be paid to the change of annealing current, according to the change of line speed to adjust the size of annealing current, so that the annealing current slowly with the increase of line speed and become larger, to ensure the normal operation of equipment.

It is believed that as long as the above points are controlled in the actual production, the quality and production efficiency of copper wire drawing products will be improved to varying degrees, so as to better and faster provide strong production guarantee for the next process production.