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Effect Of SOAP Solution On Pull Line
Mar 28, 2018

In the process of producing copper monofilament, we tend to forget the maintenance and maintenance of soap, in the actual production process, the maintenance of good soap is a high quality production of a major premise. Soap liquid plays three functions. Cleaning, the copper rod in the stretching process, the continuous production of fine copper powder, soap liquid constantly flushing mold hole, prevent mold hole plugging, cooling, copper rod deformation when heat, soap liquid will heat quickly conduction out, reduce copper wire and mold hole temperature, prevent the wire because the temperature is too high to produce oxidation discoloration phenomenon, lubrication, in the copper wire and mold hole to maintain a layer of lubrication, Avoid direct contact between mold and metal adhesion, reduce friction coefficient to reduce friction, so that the metal along the direction of uniform deformation, and can increase the degree of deformation of copper, reduce energy consumption and processing number of road, prolong the life of the mold.


From this, we can see that the quality of the soap liquid will directly affect the quality of the cable.


The effect of soap liquid on the pull line has three aspects: (a) concentration, lubrication effect and concentration are closely related. With the increase of soap liquid degree, the friction coefficient of copper and die wall decreases, and the corresponding frictional force decreases, and the tensile also decreases. Conversely, the friction increases, the required tensile also rises. However, the concentration is too large, the viscosity of the soap liquid also increases, the function of the flushing die hole will be reduced, and the copper powder produced in the stretching is not easy to be washed away by the soap liquid, resulting in the quality problems such as the surface of the wire, etc. the concentration is too small, the copper powder is easy to suspend in the soap liquid, it is not easy to precipitate,


Therefore, the concentration control is very important, in contrast to the copper big pull, the concentration between 5%~8% is a relatively ideal state. (b) temperature, when the temperature of the soap is too high, wire tension produced by the heat is not easy to take away, so that the copper and mold temperature rise, and make a single wire oxidation discoloration, reduce mold life, will also affect the strength of immature lubrication film, lubrication effect. The soap liquid temperature is too high, also easy to produce the oil-water separation phenomenon, to the equipment and the mold life will cause the influence.


The temperature of the copper large-pull soap should be controlled in 25~55℃.


(c) Cleanliness, simply speaking, is its ph, when acidic, soap liquid inside easily breed anaerobic bacterium, cause liquid blackening stink, corrode copper material and equipment; when strong alkaline, residue on copper surface soap liquid also will cause corrosion, so the ph value of SOAP liquid is most suitable in 7~7.5.


The external factors affecting soap solution are two points: (a) Circulating volume, liquid circulation in the soap pool to the internal circulation of equipment, if the circulation is small, the body temperature is high, the flow rate is slow, the heat dissipation effect is not obvious, appear above (ii) described in the situation.


Large circulation, not only good cooling effect, but also affect the cleaning effect, soap liquid has been circulating, the internal filling oxygen, not easy to breed anaerobic bacteria.


(b) The ventilation effect between soap and liquid, the air circulation between soap and liquid will not form a sealed environment, then anaerobic bacteria do not have suitable living space, so that the life of the soap solution is guaranteed; In addition, the ventilation effect is good, soap liquid temperature also has a slight effect, soap liquid pool heat dissipation fast, avoid the phenomenon of high oil temperature. We consider the drawing process, not only to consider the mold, equipment and other factors, soap liquid is also a link can not be ignored, only each link to each other, our products can be quality and quantity, to reach a new height.


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