Great progress has been made in the continuous hot-dip galvanizing process technology of electroplated strip steel for electric heating pipes

Great progress has been made in the continuous hot-dip galvanizing process technology of electroplated strip steel for electric heating pipes

The surface quality of steel plates should include three parts: surface defect status, cleanliness, and surface morphology. It is an important aspect to measure the quality level of the plate and strip, and its quality directly affects the coating quality and freshness of the automotive exterior panels. In recent years, the requirements for the surface quality of hot-dip galvanized automobile outer panels have been continuously increasing, and higher requirements have been put forward for the coating's coating properties and the freshness after coating, resulting in increasingly stringent requirements for the surface roughness of hot-dip galvanized products. The surface quality of the coating is not only related to various defects on the coating surface, but also closely related to the air knife and its blowing medium. In terms of air knife technology, China mainly relies on the introduction. Currently, research should be conducted on the shape of the air knife edge, the impact of blowing medium on surface quality, the solution to the problem of coating edge thickening, and overcoming the impact of strip steel vibration to form its own technology.

In recent years, great progress has been made in the continuous hot dip galvanizing process technology of strip steel, especially in the development of zinc pot technology, alloying technology, leveling technology, and online measurement and control technology. However, there are also many areas that need further in-depth research. The continuous hot dip galvanizing technology for strip steel in China is generally relatively backward, and it is necessary to strengthen research, especially focusing on the alloying process, zinc slag control, the plating ability of high-strength steel, and the improvement of coating surface quality, in order to gradually improve the market competitiveness of domestic hot dip galvanized sheets.

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