Hot-dip galvanizing - Process Development origin status
Hot-dip galvanizing anti-corrosion technology is currently in the advanced countries, the most widely used and most effective method of atmospheric corrosion
Steel material is an important resource for human life today indispensable. However, dictates its own characteristics, the "rust" No day with us from time to time, and all the time the loss of our resources - iron and steel.
Advanced countries, have long noted that "rust" seriousness, it is estimated that losses due to corrosion caused by over production in Japan about gross national (GNP) of 3.5% a year. In the United States, this ratio was 4.2%, 3.5% in the UK, Germany, 3%. Japan 3.5% as calculated in 2001 we unknowingly lost eighty-three billion yuan. So the advanced countries have set up anti-corrosion technology-related research institutions to take effective measures to avoid or reduce their losses.
Hot-dip galvanizing anti-corrosion technology is currently in the advanced countries, the most widely used and most effective method of atmospheric corrosion, its performance, features and cost, are discussed in this introduction. This briefing note by the hope that everyone on hot-dip galvanized anti-corrosion methods have a deeper understanding, and make use of.
The use of hot-dip galvanized more than one hundred and fifty years of history, the principle has been no change. And because there are numerous research reports for their detailed review of the processes, and therefore have a wet method from the most primitive to the evolution of today's galvanized dry method and continuous method and other operations. Its anti-corrosion effect is also recognized as the best, and most cost-effective. It is estimated that each year around the world by hot-dip galvanized steel, about 20 million tons, to maintain the value of its human resources are limited it is difficult to estimate.
Hot-dip galvanizing advanced countries are already very widely used. Jufan electricity, telecommunications, roads, transportation, bridges, harbors, buildings, etc. can be used. Exaggeration to say "Iron place, there is hot dip galvanized" should not be an exaggeration.
Hot-dip galvanizing process Introduction
Hot-dip galvanizing principle, that is simply cleaned clean iron, via wetting Flux, and immersed in a bath of zinc, iron and steel molten zinc reacts with an alloyed film.
Good hot-dip galvanizing operations, should be in all processes and procedures are under strict control, the fullest function of the process. And if the poor operation of the previous process, will lead to a chain of adverse reactions follow the process, and a significant increase in operating costs or adverse hot-dip galvanized products. If pre-treatment is bad, you can not properly complete response molten zinc and steel, galvanized coating to form a perfect organization. If the post-processing is bad, then the destruction of galvanized coating appearance, reduce the value of goods and so on.
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