An acidic plating flux containing zinc phytate

Abstract

The invention discloses an acidic plating assistant agent containing zinc phytate. The acidic plating assistant agent comprises the following components in parts by weight: 50-100 parts of ammonium chloride, 15-30 parts of sodium fluoride, 40-50 parts of aluminum chloride, 20-30 parts of stannous chloride, 10-20 parts of nickel chloride, 20-40 parts of zinc phytate, 60-150 parts of zinc oxide, 15-20 parts of borax, 10-20 parts of hydrogen peroxide, 20-40 parts of KyAnXm, 60-75 parts of water, 5-10 parts of citric acid, 20-25 parts of oxalic acid, 5-15 parts of octaphenyl polyoxyethylene ether, 30-35 parts of methanol, 1-2 parts of urea, and 10-15 parts of N-hydroxyethyl perfluorooctane sulfonamide, wherein in KyAnXm, A is a rare earth cation or zirconium ion and X is sulfate or borate or fluorine ion. By the acidic plating assistant agent, a matrix metal is subjected to hot-dip plating treatment, the wetting infiltration effect and adhesion force of the plating assistant agent on the matrix metal are increased, the plating assistant effect is improved, the mechanical properties of the matrix metal are enhanced, the oxidation resistance is increased so that the matrix metal is more beautiful.

Description

technical field [0001] The invention relates to the technical field of hot-dip plating, in particular to an acidic zinc phytate-containing flux. Background technique [0002] At present, the anti-corrosion coating of the base metal in China mainly includes different systems such as electro-galvanizing, hot-dip galvanizing, aluminum, zinc-aluminum alloy, etc., using the above-mentioned process method, a layer of corrosion-resistant coating is coated on the surface of the base metal to achieve the protection of the base metal. Protect. Due to the deterioration of the global atmospheric environment quality, the content of some corrosive gases such as some acid gases in the air is increasing day by day, and the corrosion of the coating is intensified. The corrosion resistance and service life of single metal coatings, especially zinc coatings, have been difficult to meet the material protection requirements of modern industries. . [0003] Hot-dip galvanizing is one of the mos...

AI Technical Summary

Problems solved by technology

However, when the addition of aluminum element in hot-dip galvanizing is greater than 0.06%, the conventional ammonium zinc chloride flux will be invalidated, resulting in problems such as missing plating of the plated parts, making the hot-dip galvanized aluminum alloy coating in production and application heavily restricted

Moreover, for ordinary carbon steel commonly used for hot-dip galvanizing, especially active silicon-containing steel, a thick zinc-iron alloy layer is easy to form due to the Sandelin effect. The thickening of this alloy layer not only affects the appearance of the coating, but also affects the adhesion of the coating. focus on