Medium wet wire drawing machine has a heavy water tank and flip water tank. It is suitable for drawing various metal wires of medium and fine specifications, especially suitable for drawing high, medium, and low carbon steel wires, galvanized iron wires, bead steel wires, hose steel wires, tungsten, molybdenum, titanium and other alloy wires, steel cords, copper wires and aluminum wires, etc.
Working Principle of Medium Wet Wire Drawing Machine
The medium wet wire drawing machine is a small continuous production equipment composed of multiple drawing heads. Through drawing step by step, and placing the drawing heads in the water tank, the steel wire is drawn to the required specifications. As far as several major domestic water tank-type wire drawing machine manufacturers are concerned, they are generally equipped with about 20 drawing heads. After each level of drawing, the wire diameter of the steel wire has changed, so the working line speed of each drawing head should also change.
During the whole drawing process, only one electric motor is required to drive through mechanical transmission or gearbox. Depending on the configuration of the drawing die, the drawing speed of each drawing head also changes. The benchmark of the drawing speed is that the second flow volume of the steel wire passing through the drawing die at each moment is constant, that is, the following formula should be established
πD 2v1=πd 2v2
In the formula, D——the diameter of the incoming steel wire
v1——The linear velocity of the incoming steel wire
d——the diameter of the outgoing steel wire
v2——The linear velocity of the outgoing steel wire
The working speed of each drawing head of the medium wet wire drawing machine is based on the above formula to ensure that each drawing head runs synchronously. Since the wire drawing process of the water tank type wire drawing machine is completely drawn by the mechanical shafts, and these mechanical shafts are driven under the same main shaft, the different stages of the entire stretching system depend on the speed difference of the stretching wheels and the tension on the line. Controlling synchronous coordination work.
Coolant is needed to dissipate heat during work. The winding part is driven by a low-power motor, and the tension on the thread needs to be kept constant during winding. If the tension of this section fluctuates, the winding on the winding I-shaped wheel will be uneven.
The winding link of the medium wet wire drawing machine is the core link in the control system of this equipment, and this link also directly affects the quality of the steel wire. For winding, there are usually several control methods:
1) It is adjusted by the tension roller, and the tension during winding is guaranteed by the tension roller’s own weight.
2) With torque control, the tension during winding is determined by the given torque, but the winding tension will be unbalanced due to the change in winding diameter.
3) For wet wire drawing machines with high technical requirements, the first control method is usually adopted, and the PID correction function of the inverter ACS510 is used to control the adjustment of the tension roller.
