Hot-dip galvanized steel pipe principle and hot-dip galvanized steel pipe in the production of applications. Hot-dip galvanized steel pipe, in order to improve the corrosion resistance of steel pipe, hot-dip galvanized on ordinary steel pipe. Hot-dip galvanized steel pipe is divided into two kinds of hot-dip galvanized and phosphated, hot-dip galvanized hot-dip galvanized layer is thick, the phosphated cost is low, and the surface is not polished. Currently the largest number of use or hot-dip galvanized steel pipe and hot-dip galvanized pipe.

Hot-dip galvanizing, also known as hot-dip galvanizing and hot-dip galvanizing, is a reasonable method of metal corrosion and is mainly used on metal components and equipment in various fields. The alloy is treated with anti-rust treatment and infiltrated into the zinc solution dissolved at 500℃ up and down, so that the surface of steel prefabricated components adheres to the zinc layer, thus achieving the purpose of corrosion prevention. Hot-dip galvanizing production process: pickling passivation - water cleaning - plus auxiliary plating solution - air-drying - hanging plating - cooling - medicated - cleaning - grinding - polishing - hot-dip galvanizing completed. How does hot-dip galvanized steel pipe work?

Principle: Hot-dip galvanizing is the formation of zinc in a high-temperature liquid by the following three processes:

First, the iron base surface zinc liquid melting to generate zinc - non-ferrous metal phase layer;

Aluminum alloy layer of zinc ions further diffusion to the substrate, the formation of zinc-iron phase soluble layer;

Aluminum alloy layer on the surface of the straight line with the zinc layer.

Hot-dip galvanized steel pipe on the surface of the steel has a layer of partial thickness of high-density pure zinc coating, which prevents the steel substrate and water solution contact, thereby protecting the steel substrate from corrosion. Ordinary air, the surface of the zinc layer produces a very thin and dense active zinc oxide layer, the surface is difficult to dissolve water, so the steel substrate to play a certain maintenance effect. If the active zinc oxide and other components in the air into insoluble zinc salts, then the role of anti-corrosion is even more idealized.

Hot-dip galvanized pipe is due to the reaction of molten metal materials and iron substrate and the formation of a layer of aluminum alloy, so that the substrate and the plating of the two close together. Hot-dip galvanizing is the first steel pipe pickling passivation, in order to better remove compounds on the surface of the steel pipe, after pickling passivation, according to ammonium chloride, magnesium chloride solution or ammonium chloride, magnesium chloride mixed solution tanks for cleaning, and then sent to the hot dip plating tank. Hot-dip galvanizing has the advantages of uniform coating, strong bonding, long life and so on. Hot-dip galvanized steel pipe substrate and molten plating solution produces a cumbersome physical, organic chemical anti-hot-dip galvanized steel pipe should come into being, the formation of closely constructed, corrosion-resistant zinc a non-ferrous metal layer. Aluminum layer combined with pure zinc layer, steel pipe substrate. Therefore the corrosion resistance is very strong.

BAOSTEEL GROUP

WhatsApp: 8615052166632

E-mail: admin@baosteelscm.com

Tel: +86-15052166632