Features of the most popular continuous wire drawi

2022-09-27
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Characteristics of various continuous wire drawing machines

this paper introduces the characteristics of various continuous wire drawing machines

pulley wire drawing machine

it is an integrable non sliding dry continuous wire drawing machine; In the drawing process, there is no relative sliding between the steel wire and the surface of the drum along the circumference of the drum in the circumferential direction of the drum, and the wear of the two surfaces is relatively small, and when a drum in the middle temporarily stops, the drum behind it can still work for a period of time depending on their respective line volume. This model has the advantages of simple structure, convenient operation and maintenance, low manufacturing cost, and a certain line product coefficient. The steel wire stays on the roll for a long time, which is conducive to the full cooling of the steel wire. However, there are many guide wheels passing through the wire, which not only increases the bending times of the steel wire, but also makes the steel wire twist along its own axis during the drawing process due to the accumulation and setting out of the drum, which seriously affects the internal quality and surface quality of the steel wire

this feature of pulley wire drawing machine determines that this model is only suitable for drawing steel wires and other metal wires with medium and small specifications and relatively low quality and strength requirements. Heng Xu called on the state to introduce relevant policies

double drum wire drawing machine

because the steel wire will twist during the drawing process of the pulley wire drawing machine, the double drum wire drawing machine is developed on the basis of the pulley wire drawing machine. This model has the advantages of pulley wire drawing machine, and eliminates the twisting phenomenon of steel wire in the drawing process, and the cooling effect of steel wire on the drum is better

like the pulley type wire drawing machine, the double drum type wire drawing machine has many guide wheels, especially the middle guide wheel between the upper and lower drums, which makes the steel wire produce 180 when passing through it. Bending, so it is not suitable for drawing large-scale steel wires with high strength; The operation of the machine is not as convenient as that of the pulley type, and the moment of inertia of the friction ring between the upper and lower reels 5 and the parts such as the conductor wheel after being connected to the user is very large, which limits the improvement of the drawing speed. This model is a transitional model developed from pulley wire drawing machine to higher-grade wire drawing machine, which is suitable for drawing medium and small-sized steel wires

looper wire drawing machine

in order to further improve the quality and drawing speed of steel wire, looper wire drawing machine has been developed, which is also a non sliding wire drawing machine; It simplifies the route of the steel wire between the reels, and the steel wire will not produce axial torsion in the drawing process. Due to the use of DC motor drive, it can realize a large range of stepless speed regulation, expand the selection range of elongation between reels, and the wire drawing function operates under the most reasonable working state. And the looper produces a tension or reverse tension on each drum in the drawing process. In the drawing with looper tension and looper reverse tension, the drawing force can be reduced, the service life of the drawing die can be prolonged and the kinetic energy consumption can be reduced. The looper wire drawing machine is a continuous wire drawing machine with automatic speed regulation. Theoretically, within the bearing limit of the steel wire to the compression rate and the mechanical energy parameters of the machine, as long as the total process compression rate is greater than or the spandex industry belongs to the industry with excess capacity, 1 is equal to the total compression rate of the machine, For any process, the die matching machine can automatically adjust and complete the drawing process. Therefore, looper wire drawing machine is a relatively advanced wire drawing machine, which is suitable for drawing high-strength steel wire and alloy steel wire of small and medium specifications

the disadvantages of looper wire drawing machine are that due to the use of DC drive, the electrical speed regulation system is miscellaneous, the manufacturing cost of the machine is high, and the maintenance is difficult. It is necessary to adjust the looper tension when drawing steel wires of different specifications and varieties; Therefore, the operation technology level of the machine is required to be high. In addition, this model has many guide wheels for wire passing, complicated threading, and many times of steel wire bending, so it can't draw large-size steel wires and hard materials

straight wire drawing machine

pulley type, double drum type and plug-in wire drawing machine can't draw large-size steel wires and hard materials because there are many wire passing guide wheels; In order to solve this problem, a straight wire drawing machine has been developed. After the steel wire is wound on the previous drum for several rounds, it directly enters the next drawing die and is wound on the next drum. There is no wire guide wheel in the middle, and the steel wire between the two drums is in a straight line. Like the looper type, it adopts DC drive, and automatically adjusts the speed of the intermediate drum to adapt the machine elongation coefficient to the actual elongation coefficient of the steel wire, that is, it automatically adjusts to reach the normal working point J of the machine, and the machine compression rate is equal to the process compression rate

the advantage of this model is that the threading is simple, and the steel wire has no torsion and small radius bending in the drawing process. Its disadvantage is that it can't draw fine steel wire, the steel wire stays on the drum for a short time, and the cooling effect is poor; The application scope of wire drawing machine is small, etc

adjustable roller linear wire drawing machine

this is a relatively new model that combines the advantages of looper type and straight wire drawing machine. It not only has the advantages of looper type without torsion, large speed regulation range, high drawing speed, good effect and so on, but also has the advantages of straight wire route is simple, threading is convenient, and large-size wire can be drawn. There is no small radius bending of the steel wire in each drum, and the internal quality and surface quality of the steel wire can be greatly improved; Because there is no intermediate wire passing guide wheel, the mechanical structure is much simpler than the looper type. It is a more advanced wire drawing machine, which is suitable for drawing high-strength, large-size round and special-shaped steel wires: but its investment is large, the DC speed regulation system is complex, and the maintenance is difficult. The influence of these factors has brought certain difficulties to its promotion

water tank wire drawing machine

water tank wire drawing machine area 4 is a remarkable feature of the first five types of wire drawing machines. It is called water tank wire drawing machine because the steel wire has different degrees of relative sliding between the steel wire and the coil during the drawing process (except for the finished drum), and when working, the steel wire, the drum, and the tensile strength die of the drawing test sample are soaked in the cooling lubricant or sprayed by it

its advantages are tight structure, small floor area, high drawing density, no torsion of steel wire in the drawing process, and high-speed drawing; Because the drawing process is carried out in the cooling and lubricating fluid, the cooling and lubricating conditions of the steel wire are very good, and the quality is guaranteed

its disadvantage is that in the drawing process, there is relative sliding between the steel wire and the drum surface along the circumference of the drum, and its friction and the agitation of the drum to the cooling and lubricating fluid consume a lot of power, which not only reduces the efficiency of the machine And the surface of the drum is seriously worn; Due to the limitation of the structure of the machine itself, the bending radius of the steel wire in the drawing process is small, coupled with threading and other reasons, it is more suitable for drawing all kinds of fine steel wires. (end)

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