Surfactant-containing rare-earth salt plating auxiliary

Abstract

The invention discloses a surfactant-containing rare-earth salt plating auxiliary which comprises components in mole parts as follows: 15-20 parts of ammonium chloride, 6-9 parts of ammonium fluoride, 10-15 parts of cerium chloride, 5-10 parts of zinc chloride, 5-15 parts of zinc oxide, 3-5 parts of hydrogen peroxide, 2-4 parts of dihydric phosphate, 3-4 parts of KyAnXm, 60-75 parts of water, 10-15 parts of ethanol, 1-2 parts of dodecyl phenol ethoxylates, 3-4 parts of triethanolamine, 1-2 parts of sodium stearate, and 0.5-0.8 parts of dioctyl sodium sulfosuccinate, wherein A in the KyAnXm is the rare earth element or Zr, and X is an acid radical ion. According to the surfactant-containing rare-earth salt plating auxiliary, hot dipping processing is performed on base metal, a composite surface film is formed on the base metal surface, both a mechanical protection function and an isolation effect are achieved, an electrochemical process is inhibited, and corrosion is slowed down; and meanwhile, the surface state of a plating is improved, so that the base metal has bright color in appearance and have better decorative performance.

Description

technical field [0001] The invention relates to the technical field of hot-dip plating, in particular to a surfactant-containing rare earth salt plating flux. Background technique [0002] At present, the domestic anti-corrosion coating of base metal 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 single-metal coating is coated on the surface of the base metal to realize Protection of the base metal. [0003] Hot-dip galvanizing is one of the most effective means to delay the environmental corrosion of steel materials. With the development of science and technology and modern industry, higher requirements are put forward for hot-dip galvanizing products. In order to improve the corrosion resistance of the coating of steel hot-dip galvanized parts, people usually add one or more alloying elements to the zinc bath. When hot-dip gal...

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Problems solved by technology

[0004] However, due to the deterioration of the quality of the global atmospheric environment, 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. Therefore, for zinc-aluminum alloys or aluminum-zinc alloys with high corrosion resistance requirements, there are defects such as high manufacturing costs and difficult product realization.