1

Drawing dies series

The equipment adopts electrical die matching mode, which is convenient for process adjustment, and can flexibly adjust the compression ratio according to the drawing performance of different materials. The process is easy to operate

The equipment adopts mechanical die matching method, adopts low compression ratio multi-step drawing method to draw wire, and the compression ratio is relatively fixed (related to the gradient ratio of cone). Similarly, the compression ratio is more used than the die, so it is inconvenient to adjust the compression ratio.

2

Speed matching and wire surface scratch

Because the speed matching of the front and rear capstans is electrical matching, that is, the speed difference between the front and rear capstans is detected by sensors, and then the speed of the two capstans is matched by PLC control, so as to ensure the minimum slip of wire relative to the capstan.

Because of the slight slip in the drawing process, it is not easy to produce the damage caused by the slip on the wire surface. The surface quality of wire rod is good.

The speed matching of the two cones in the front and back passes is the gradient ratio of the cones, and the compression ratio in the actual work is greater than the gradient ratio of the cones (so as to ensure that the wire is not loose and disordered in the drawing), resulting in more sliding friction of the wire relative to the cones and more scratches on the wire.

Moreover, more steel powder falls into the lubricating oil pool due to scratch. In the drawing process, the steel powder is carried by the wire into the inverted bell mouth of the wire drawing die, resulting in more scratches and steel powder. This vicious circle causes the problem of poor surface quality of wire drawing。

3

Internal stress and efficiency in drawing

The roller diameter of wire drawing machine has a large proportion to the wire diameter of wire drawn, which can effectively reduce the internal stress of wire in the drawing process and ensure the drawing quality.

Because the diameter of the roller is large, the bending stress received by the wire can be reduced effectively, so the practical efficiency of the motor is high.

The water tank wire drawing machine adopts cone for drawing. The diameter of the incoming wire is thick, but the diameter of the incoming cones is the smallest. As a result, the bending stress received by the wire is large. When the internal stress is released, the relaxation diameter and warping distance of the wire are not easy to guarantee. Due to the wire bending, part of the power of the motor is used to overcome the bending, so the effective power used in actual drawing will be reduced, and the practical efficiency will be reduced.

4

capacity

8～20m/s 

4～15m/s

5

Cooling system

The capstans, drawing dies and lubricating oil parts of the equipment are equipped with cooling water-cooling measures to ensure that the roller temperature is not high (no wire sticking), drawing dies cooling can effectively extend the practical life of the drawing dies, oil cooling can ensure good lubrication in drawing, and matching the customer's own oil filtration system can ensure the stable and reliable operation of drawing quality.

The roller and die are all cooled by spray type of lubricating oil. The specific heat capacity of the lubricating oil is small and the cooling efficiency is low. After working for a long time, the temperature of the die is high, the service life is reduced, the temperature of the lubricating oil is high, the lubrication degree is decreased and the drawing quality is low.