Novel efficient manganese-series surface conditioning agent as well as preparation method and application thereof

Abstract

The invention relates to a novel efficient manganese-series surface conditioning agent as well as a preparation method and application thereof. The manganese-series surface conditioning agent is prepared from the following components in percentage by weight: 20 to 40 percent of manganese salt, 3 to 5 percent of organic salt complex, 10 to 25 percent of fluoride, 15 to 35 percent of sodium carbonate and 2 to 15 percent of dispersion accelerant. According to the invention, a phosphating film which is fine in crystal, uniform and compact, high in protection performance and capable of being firmly combined with a matrix can be formed on the surface of a metal workpiece in a short time and at a lower temperature; according to the invention, the micro-state of the surface of the metal workpiece can be changed, the phenomenon of coarsening of the coating of the metal workpiece can be overcome, and the defects of uneven corrosion and the like caused by strong alkaline degreasing or strong acidic rust removal of the metal workpiece can be eliminated; the phosphating solution also can enhance the corrosion resistance of the surface of a metal workpiece, improve the adhesive force of a coating film, reduce the residue amount in the phosphating solution and reduce the consumption of the phosphating solution, and has the advantages of removing impurities brought by the workpiece, preventing the aging of the bath solution, prolonging the service life of the bath solution, improving the phosphating speed and shortening the treatment time.

Description

A novel and efficient manganese-based surface agent and its preparation method and application technical field The present invention relates to new material synthesis and surface treatment field, relate in particular to a kind of novel and efficient manganese-based surface conditioning agent and Its preparation method and application. Background technique Manganese series conditioning agent is a kind of powdery metal surface conditioning agent, and it is applied in the surface conditioning work before being applied in phosphating. It is specially used for manganese phosphating treatment on the surface of iron, steel and alloy metals. At room temperature or low temperature, steel, aluminum and aluminum Alloy, zinc and zinc alloy zinc-based phosphating process generally uses colloidal titanium surface adjustment; and medium-temperature iron and steel zinc-based phosphating process also often Use colloidal titanium surface adjustment; but the high temperature manganese...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a new type of high-efficiency manganese-based surface regulator and its preparation method and application, which can make the surface of a metal workpiece adsorb and form a large number of crystal nuclei and phosphating growth in a short time and at a lower temperature point, so that the metal workpiece can form a phosphating film with fine crystallization, uniform density, strong protection performance and strong combination with the substrate, which can change the microscopic state of the surface of the metal workpiece, overcome the phenomenon of coarsening of the metal workpiece film and eliminate the metal The uneven corrosion defects caused by strong alkaline degreasing or strong acid derusting of the workpiece, at the same time, it can also enhance the corrosion resistance of the metal workpiece surface, improve the adhesion of the coating film, reduce the amount of residue in the phosphating solution, reduce The consumption of phosphating solution, removing the impurities brought by the workpiece, preventing the aging of the bath, prolonging the service life of the bath, increasing the speed of phosphating and shortening the processing time, and has the advantages of good stability to solve the existing manganese The surface adjustment can not form a fine, dense and evenly distributed phosphating film, can not remove the impurities brought by the workpiece, the residue rate of the phosphating solution is high, the consumption of the phosphating solution is large, the corrosion resistance is poor, the adhesion is poor, and the processing time is long , Short service life of the bath solution and poor solution stability

Images