how to treat galvanized iron wire before galvanizing
For the galvanized wire to locally remove the surface film layer, surface inclusions and other defects can be found and processed by conventional techniques; excess foam is formed by the soap and saponified fat surfactants into the bath of. Moderate foam formation rates may be harmless. The large denier micro-homogeneous particles present in the bath stabilize the foam layer, but the accumulation of too much solid particles can cause an explosion. Use activated carbon to remove surface active substances. Or the foam is not stable by filtration, which is an effective measure; other measures should be taken to minimize the amount of surfactant introduced.
The introduction of organic matter can significantly reduce the plating speed. Although the chemical formulation is advantageous for high deposition speeds, the thickness of the coating cannot be satisfied after the organic matter is taken, so that the activated carbon can be used to treat the bath.
Zinc is a silver-white metal that is brittle at room temperature, soluble in acid and soluble in alkali, and is called an amphoteric metal. Pure zinc is more stable in dry air. In humid air or water containing carbon dioxide and oxygen, a thin layer of basic zinc carbonate is formed on the surface, which can delay the corrosion rate of the zinc layer. The corrosion resistance of the galvanized layer in aqueous solutions of acid, alkali and sodium chloride is relatively low;
it is also resistant to corrosion in the atmosphere containing carbon dioxide and hydrogen sulfide and in the maritime atmosphere; in high temperature and high humidity air and in organic acids. The atmosphere is small and the galvanized layer is easily corroded.we are provide galvanized iron wire,you can know it.
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