Skinning solution for hot-dip galvanized sheet and preparation method thereof

Abstract

The invention relates to a skin pass solution for hot-dip galvanized sheets and a preparation method thereof. 8-12 parts, 54-57 parts of triethanolamine; Component 2: 47-68 parts of water, 4-8 parts of sodium carbonate, 3-5 parts of potassium hydroxide, 2-4 parts of disodium edetate, 6-10 parts of sodium metasilicate in water, 8-12 parts of reverse blocking polyether, 6-8 parts of neodecanoic acid, and 3-6 parts of sodium benzoate. The pass liquid has good anti-rust and lubricating effects, and has excellent wetting and cleaning properties, high cleaning ability, and can lubricate and repair the surface of the roll. The surface of the galvanized sheet after pass is smooth, which can effectively eliminate Or reduce bright spots in finishing and coating moiré defects, have good foam suppression and defoaming functions, avoid liquid remaining on the surface of rolls and steel plates, avoid foam overflowing, and affect the working environment.

Description

technical field [0001] The invention relates to the field of iron and steel industry, in particular to a skin pass solution for hot-dip galvanized sheets and a preparation method thereof. Background technique [0002] At present, with the development of the iron and steel industry, the production technology of hot-dip galvanized sheet in the iron and steel industry has developed rapidly. The rapid development of hot-dip galvanized technology makes the surface quality comparable to that of cold-rolled sheet and electro-galvanized sheet. Hot-dip galvanized products are used in the fields of automobiles and household appliances. Widely used, especially the amount of hot-dip galvanized sheets for automobiles has also increased sharply, and the production technology of hot-dip galvanized sheets for automobiles is constantly improving. my country has become the world's largest producer of hot-dip galvanized sheets. While vigorously improving the productivity of hot-dip galvanized ...

AI Technical Summary

Problems solved by technology

[0006] When skin-passing hot-dip galvanized sheets in existing skin-passing machines, zinc particles or other impurities adhering to the skin-passing support rolls will also be copied to the work rolls. The tighter combination will become more and more difficult to eliminate, resulting in skinning bright spots and skinning roll marks. Therefore, high-pressure water is used behind the skinning machine to wash the roll gap and roll surface in time. Because the rolling mill, rolls and steel plates are all For ferrous metals, long-term washing with water will cause corrosion of rolling mills, rolls and steel plates