Comparison of Six Types Wire Drawing Machines Equipment Functions
The article Comparison of Six Types Wire Drawing Machines Equipment Functions includes Pulley Wire Drawing Machine, Double Drum Wire Drawing Machine, Looper Wire Drawing Machine, Straight Wire Drawing Machine, Tuning Roller Linear Wire Drawing Machine, and Wet Wire Drawing Machine ( Water Tank Wire Drawing Machine ) is as follows:
Pulley Wire Drawing Machine
Low Cost, Easy Operation, and Maintenance
It is a non-sliding dry continuous wire drawing machine that can store wires; during the drawing process, there is no relative sliding between the steel wire and the surface of the reel along the circumferential direction of the reel, and the wear on the two surfaces is relatively small. And when a reel in the middle stops temporarily, the reels behind it can still work as usual for a period of time depending on their respective storage wires.
This model has the advantages of simple structure, convenient operation and maintenance, and low manufacturing cost. At the same time, it has a certain coil coefficient, and the steel wire stays on the coil for a long time, which is conducive to the sufficient cooling of the steel wire.
However, there are many wire guide wheels, which not only increase the bending times of the steel wire, but also cause the steel wire to twist along its own axis during the drawing process due to the accumulation and unwinding of the reel, which seriously affects the internal quality and surface quality of the steel wire.
This feature of the pulley wire drawing machine determines that this model is only suitable for drawing low-carbon steel wire and other metal wires with medium and small specifications and relatively low quality and strength requirements.
Double Drum Wire Drawing Machine
Good Cooling Effect
Due to the torsion of the steel wire during the drawing process of the pulley type wire drawing machine, a double-drum type wire drawing machine has been developed on the basis of the pulley type wire drawing machine. This model has the advantages of a pulley wire drawing machine, and eliminates the torsion phenomenon of the steel wire during the drawing process, and the cooling effect of the steel wire on the reel is better.
The double-drum type wire drawing machine is the same as the pulley type wire drawing machine. There are many guide wheels, especially the intermediate wire-passing guide wheel between the upper and lower reels, which makes the steel wire bend 180 degrees when passing through it, so it is not suitable for drawing large High-strength steel wire;
The operation of the machine is not as convenient as the pulley type, and the moment of inertia of parts such as the friction ring and the guide wheel between the upper and lower reels is very large, which limits the improvement of the drawing speed.
This model belongs to the transitional model developed from pulley-type wire drawing machine to higher-grade wire drawing machine, and is suitable for drawing medium and small-sized steel wires.
Looper Wire Drawing Machine
Low Energy Consumption, Prolonging the Life of the Drawing Die
In order to further improve the quality and drawing speed of the steel wire, a looper-type wire drawing machine has been developed, which is also a non-slip wire drawing machine.
It simplifies the route of the steel wires between the reels, and the steel wires will not be twisted axially during the drawing process, and because it is driven by a DC motor, it can realize a wide range of step-less speed regulation and expand the size of the reels. The selection range of the elongation rate between, the wire drawing machine can run in a more reasonable working state.
And the looper has all produced a pulling force or reverse pulling force to each reel in the drawing process.
In the drawing with looper pull force and looper reverse pull force, the drawing force can be reduced, the life of the wire drawing die can be prolonged and the kinetic energy consumption can be reduced.
The looper wire drawing machine is a continuous wire drawing machine that can automatically adjust the speed. Theoretically speaking, within the force parameter of the machine for the compression ratio of the steel wire, as long as the total process compression ratio is greater than or equal to the total compression ratio of the machine. The machine can be automatically adjusted to complete the drawing process for any kind of process mold matching.
Therefore, the looper wire drawing machine is a relatively advanced wire drawing machine, which is suitable for drawing high-strength steel wires and alloy steel wires of small and medium specifications.
The disadvantage of the looper wire drawing machine is that due to the use of DC drive, the electrical speed control system is complicated, 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; A high level of operational skill is required.
In addition, this model has more guide wheels for thread passing, more complicated threading, and more bending times of the steel wire, so it cannot draw large-sized steel wires and super-hard materials.
Straight Wire Drawing Machine
Easy to Thread
The pulley-type, double-drum type, and sleeve-type wire drawing machines are all unable to draw large-size steel wires and hard materials because there are more wire-passing guide wheels; in order to solve this problem, a straight-type wire drawing machine has been developed.
After the steel wire is wound several times on the previous reel, it directly enters the next drawing die and is wound on the next reel without passing through any wire guide pulley in the middle, and the steel wire between the two reels is in a straight line.
Like the looper type, it adopts DC drive, and automatically adjusts the speed of the middle drum to make the machine elongation coefficient adapt to the actual elongation coefficient of the steel wire, that is, the automatic adjustment reaches the normal working point of the machine, and the machine compression rate is equal to the process compression Rate.
The advantages of this model are simple threading, no twisting, and small radius bending of the steel wire during the drawing process. Its disadvantage is that it cannot draw thinner steel wire, the steel wire stays on the reel for a short time, and the cooling effect is poor; the application range of the wire drawing machine is small, etc.
Tuning Roller Linear Wire Drawing Machine
Large Speed Range, High Drawing Speed, Good Cooling Effect
This is a relatively new type of wire drawing machine that combines the advantages of the looper type and the straight type wire drawing machine. It has the advantages of a simple straight-in steel wire route, convenient threading, and the ability to draw large-size steel wires.
There is no small-radius bending of the steel wire on each reel, and the internal quality and surface quality of the steel wire can be greatly improved;
Since there is no intermediate wire passing guide wheel, the mechanical structure is much simplified compared with the looper type. It is a relatively advanced wire drawing machine, suitable for drawing high-strength, large-sized round, and special-shaped steel wires.
However, its large investment, complex DC speed control system, and difficult maintenance have brought certain difficulties to its promotion.
Wet Wire Drawing Machine ( Water Tank Wire Drawing Machine )
High Drawing Density
The remarkable feature of the Wet Wire Drawing Machine (water tank wire drawing machine) that is different from the previous five types of wire drawing machines is that the steel wire and the reel have different degrees of relative sliding during the drawing process (except for the finished reel), and the steel wire, reel, and wire drawing die They are all soaked in cooling lubricating fluid, so they are called water tank wire drawing machines.
The advantages of the water tank wire drawing machine are compact structure, small footprint, high drawing density, no twisting of the steel wire during the drawing process, and high-speed drawing.
Because the drawing process is carried out in the cooling lubricant, the cooling and lubrication conditions of the steel wire are very good, and the quality is guaranteed.
Its disadvantage is that during the drawing process, there is a relative sliding between the steel wire and the surface of the reel along the circumferential direction of the reel, and its friction and the agitation of the cooling lubricant by the reel consume a lot of power, which not only reduces the efficiency of the machine, and the surface of the roll is subject to severe wear.
Due to the limitation of the structure of the machine itself, the bending radius of the steel wire is small during the drawing process, and the reasons such as threading determine that it is more suitable for drawing various fine-gauge steel wires.
