There are two kinds of zinc flowers in hot galvanized sheet

What is the use of zinc flowers in galvanized sheet?

Because the total output of raw materials with zinc flowers in galvanized sheet is relatively small now, can the raw materials without zinc flowers be used to replace the raw materials with zinc flowers? Dongguan Chunhou Trading Co., Ltd. for everyone to give a good detailed introduction.

What is the use of zinc flowers in galvanized sheet?

There are two kinds of zinc flowers in hot galvanized sheet: one is all normal zinc flowers, and the other is no zinc flowers. In the past, because the lead in the zinc solution can not be extracted very pure, there are always some zinc flowers on the surface, so people's old consciousness inside the hot galvanized sheet is that there are zinc flowers.

With the development trend of the automobile industry, hot dip galvanized automobile plate to do spraying provisions, zinc flower is harmful to spraying, and then according to the zinc ingots and zinc liquid lead exceed the standard reduced to dozens of ppm, people can make no zinc flower or very little zinc flower goods.

All normal zinc flower is hot dip galvanizing under the usual conditions of zinc layer cold suspicion and zinc flower, it is to do the general main purpose.

The key to zinc-free flower products is to operate the lead in the zinc pot at a certain level according to the unique production process, or after the hot rolled strip zinc pot after a unique solution, such as the treatment process of small zinc flowers or zinc spray powder, to manipulate the zinc flowers at a lower level than a certain level can obtain zinc-free flower products.

The key of zinc non-ferrous metal commodities is to carry out further zinc non-ferrous metal solution for pure zinc commodities after the zinc pot, and obtain a coating that is zinc free, dark gray and dull.

The main use of the key is suitable for further painting places.

It should not be used naked.

Annealing temperature is one of the key parameters in galvanized sheet process and it has great harm to tensile strength. When the annealing temperature is low, quenching is not enough, crystal fine, high compressive strength, low elongation; The annealing temperature is too high and it is very easy to cause the crystal to appear unusually strong, the tensile strength is reduced in addition to the compressive strength is reduced more. The commodity is very easy to break immediately in the whole process of customer stamping die forming and Lashup.

The raw material roughness of galvanized sheet will harm the oil storage capacity of its surface layer. The suitable roughness of coil steel is also critical to the stamping die characteristics of raw materials. In addition, the selection of oil amount is very key. If the oil amount is too small, the raw materials do not get sufficient wetting in the whole process of the stamping die, which will cause the raw materials stamping die to crack; If the amount of oil is too much, the whole process of slitting and forming is easy to deviate and harm the sense of rhythm.