Home > Exhibition > Content
Development of hot-dip galvanized steel plate
Jun 05, 2017

Hot-dip galvanizing products are widely used in the field, its advantages lie in the long period of anti-corrosion, adapt to a wide range of environment, has been a popular antiseptic treatment methods. It is widely used in power towers, communication towers, railways, road protection, street lamp poles, marine components, building steel structural components, substation ancillary facilities, light industry and so on. So we're going to pick up the secret of hot dip galvanizing process today.

Hot-dip galvanizing was invented in the 18th century century, it was developed by Hot tin plating technology, and has entered the fourth century. So far, hot-dip galvanizing is still the most common and effective process in the corrosion prevention of steel.

In 1742, Dr. Maroying conducted a groundbreaking experiment on hot-dip galvanizing of steel and read it at the Royal Academy of France.

In 1837, French Soril applied for hot-dip galvanizing patents, and proposed the use of original battery method to protect the steel, that is, on the surface of the iron galvanized rust-proof process. In the same year, the British Jack Crawford applied to ammonium chloride as a solvent zinc plating patent, this method after many improvements and lineage to date.

1931, the most outstanding engineer of modern metallurgical industry, Polish Sendzimir, built the world's first continuous strip hot-dip galvanizing line of hydrogen reduction method in Poland, the Act was patented in the United States and was established in 1936-1937 in the United States and France Maubeuge steel mills respectively named after the Sendzimir industrial hot-dip Galvanized production line, creating a continuous, high-speed, high-quality hot-dip galvanized New era.

20th century 50-60, the United States, Japan, Britain, Germany, France, Canada and other countries successively produce aluminized steel plate.

In the early 70, Bethlehem Iron and steel company invented the product called Galvalume aluminum-zinc-silicon coating material, corrosion resistance of pure zinc coating 2-6 times.

Hot-dip galvanizing-nickel alloys were rapidly promoted in Europe, America and Australia in in the 1980 of the 20th century, and the process was named Technigalva. At present, the Zn--Ni-si-Bi is developed on this basis, which can obviously inhibit the Saint-Derin reaction of silicon steel when it is hot-plated.

In in the 1990 of the 20th century, Japan new steel company developed a product called ZAM Zinc-aluminum-magnesium coating material, its corrosion resistance of traditional galvanized layer 18 times times, known as the fourth generation of high corrosion-resistant coating materials.