The quality of large rolls of galvanized wire varies greatly, as a user how can easily and accurately identify the quality of galvanized wire? This is related to the element composition of synthetic galvanized wire. Today, Xiaobian to tell you to use the method. For the adhesion requirements of the standard galvanized wire coating, the zinc layer of the plating should be firmly combined with the base metal and have sufficient adhesion strength, and will not fall off or be raised after the hammer test.
According to different industrial needs, different requirements are used in the smelting installation requirements with different alloying elements, such as chromium, molybdenum, nickel, etc., this kind of material is known as alloy Kuang iron. The galvanized wire directly from the ore iron through the ironmaking furnace, the main composition is oxidation grade, silica and some other things, and then add carbon, silicon and other elements into it. The resulting material is what we call pig iron.
When the thickness of good galvanized wire and plated parts is 3-4 mm, the zinc attachment amount should be less than 460 grams/meter, that is, the average thickness of the zinc layer is not less than 65 microns; When the thickness of the plating is greater than 4 mm, the zinc adhesion should not be less than 610 g/m, that is, the average thickness of the zinc layer is not less than 86 microns; The coating of standard galvanized wire must be uniform, and the galvanized layer is basically uniform with copper sulfate solution test etched five times without exposing iron.
It is better to control the temperature between 30 and 50℃ when electroplating. Because the chloride ions in the bath are very corrosive, quartz glass heaters are generally used. Continuous production does not require heating, but rather cooling. The cooling method can be used to line thin-walled plastic pipes at the edge of the groove.
It is cooled by running tap water, and titanium tubes can also be used as temperature control devices. In the process of composite plating, it is necessary to stir the plating solution to obtain the composite coating in which the particles dispersed in the matrix metal. Stirring methods include mechanical stirring, air stirring, ultrasonic stirring, bath circulation and so on.
Post time: 29-11-23