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Two production methods of small zinc-flower zinc-free flower plate,(2)

- Jul 06, 2018 -

Two production methods of small zinc-flower zinc-free flower plate,(2)

     Spend suppressor method produces small zinc from zinc zinc plate, there are three shortcomings: first, must use special spangles suppression equipment, increase the construction cost and operation cost of hot galvanizing unit;Secondly, the zinc flower suppressor is prone to failure, especially the spray hole is easy to block, which will lead to uneven size of zinc flower and unstable product quality.Third, when the zinc layer solidifies, it is suddenly cooled, which is equivalent to quenching, increasing the hardness and brittleness of the zinc layer, and weakening the ductility of the zinc layer.For this reason, hot galvanizing workers in developed countries are committed to finding a new method that is simple, easy to use and has better effect.So, in the late 1980 s invented the "town of lead-free hot zinc method", is to take this name, because most of the world's enterprise adopts lead hot galvanizing method, this method is developed and put into production on the original lead hot galvanizing line.Lead-free galvanizing method of the basic point is: only in hot plated with zinc ingot aluminium, do not contain lead, zinc and zinc pot liquid containing aluminum only, do not contain lead (lead and several other elements as impurities exist in trace amounts), because there is no lead in zinc liquid, lost factor in zinc flower grow up, can not form the big zinc zinc to form a tiny flowers.This kind of method by changing the composition of zinc liquid is the second kind of method of producing zinc-free flower plate.

    Which of the two methods is superior?The second method is compared with the first kind of method, with low cost (do not need special equipment), stable product quality (lead-free zinc liquid composition is stable, zinc flower size is quite small uniform stability) and zinc layer ductility good (for not been quenching) such three advantages.Therefore, the second method is superior to the first.Therefore, the second kind of methods have been developed rapidly in foreign countries and developed in China in recent years.However, the study on the international zinc flower suppressor fang fa has changed from very active to very slow.However, the first kind of method still has certain survival space under certain conditions.Only a hot galvanizing production line, for example, an enterprise and online only a zinc pot, to alternate the production of zinc plate and no zinc plate two kinds of products, to take the first kind of method, is far more convenient than the second.This is because the composition of the zinc liquid in the first method remains unchanged. It is only necessary to start the zinc flower suppressor when producing the non-zinc flower plate.