Large coils of galvanized wire are processed by using low carbon steel wire, after drawing molding, pickling rust removal, high temperature annealing, cooling and other processes. The temperature of large galvanized wire should be controlled at 30-50℃ for electroplating. Because the chloride ion in the bath is very corrosive, quartz glass heater is generally used. Continuous production does not need heating, but cooling cooling.
For cooling, thin-walled plastic pipes can be densely arranged at the edge of the trough and cooled by flowing tap water. Titanium pipes can also be used as temperature control devices. In the process of composite electroplating galvanized wire, it is necessary to stir the plating solution in order to obtain the composite coating in which the particles are dispersed in the matrix metal. Stirring methods include mechanical stirring, air stirring, ultrasonic stirring, bath cycle and so on.
The acid activation solution can remove the corrosion products and oxide film on the surface of low carbon steel wire, without over corrosion to the matrix. Galvanized wire can use zincate galvanizing or chloride galvanizing process, should use appropriate additives to obtain low carbon steel wire standard requirements of the coating. When the galvanized wire out of light plating should be out of light treatment. To control the temperature of galvanized wire plating solution.
Large volume of galvanized wire pickling should be paid attention to, acid has a strong corrosive, so when adding acid, we must pour acid into the water, but also along the cylinder wall, not a splash, so as not to cause splashing. Remember the order of acid pouring, acid into water rather than water into acid, acid into water will cause splashing and boiling, when pouring acid must wear protective glasses, beside must ensure that there are no non-professional onlookers, so as not to cause some splashing acid danger.
Post time: 21-12-21