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The Role and Characteristics of The Strip Treatment Agent in The Color Coated Board
With the increasing demand for anti-corrosion ability and coating effect in metallurgy, construction, automobile, home appliances, and other industries, it promotes the rapid development of China’s color-coated board industry and strips continuous hot-dip galvanizing industry, especially the high quality color corrugated steel sheet manufacturing process. It saves the operation and work of degreasing (pickling, caustic washing, washing), film formation (phosphating, passivation, washing) and coating (primer, baking, topcoat) than the traditional first processing and painting process. Time, saving pre-processing costs, painting costs, pre-processing equipment, and coating equipment costs, plant investment costs, etc., improving the processing environment and workers’ working conditions and has been widely welcomed by many manufacturing industries, further promoting the color-coated board The rapid development of the industry.
Due to the continuous hot-dip galvanizing process and the color-coated plate manufacturing process of strip steel, it has great difference from the traditional pre-processing and post-coating process. The degreasing agent, the conversion liquid and the passivating agent have special effects and their own characteristics. This paper introduces the role and characteristics of strip hot-dip galvanizing and color-coated plate pretreatment and the special treatment agent used, namely the strip treatment agent.
In order to remove the oil stain, rust, dust, etc. from the continuous hot-dip galvanizing of the strip steel and the surface of the substrate used for the manufacture of the low price color corrugated steel sheet, it is suitable for the continuous hot-dip galvanizing and coating coil coating of the strip. The substrate is used to ensure the hot-dip galvanized sheet and the color-coated sheet, which have good corrosion resistance and adhesion, and must be chemically treated before hot-dip galvanizing or coating materials. The chemical treatment agent used in the continuous hot-dip galvanizing and color-coated plate manufacturing process of the strip steel is called a special treatment agent for the strip, which is referred to as a strip treatment agent, which includes a strip degreasing agent, a strip conversion liquid, and a strip. There are three major types of passivating agents.