Acidic normal-temperature degreasing agent and preparation method thereof

Abstract

The invention discloses an acidic normal-temperature degreasing agent and a preparation method of the acidic normal-temperature degreasing agent. The acidic normal-temperature degreasing agent can rapidly strip and emulsify oil stains, iron powder and other dirt from the surface of a cold-rolled steel plate under the temperature condition of 10 DEG C-40 DEG C, meanwhile, an oxidation film and floating rust on the surface of the steel plate are removed, sedimentation separation of the dirt in a degreasing agent circulating tank is realized, the phenomenon that the cleaned dirt attaches to the surface of the steel plate along with circulating flow of washing liquid again is avoided, so that the washing period is greatly shortened, the cold-rolled steel plate with high surface cleanliness is obtained, and it is guaranteed that a coating has excellent adhesive force on the surface of the cold-rolled steel plate in the later period. Compared with a conventional alkaline degreasing agent, the degreasing agent has the advantages that heat energy such as steam consumed by high-temperature saponification is avoided, and the applicable temperature is 10-40 DEG C, so that the washing energy consumption is greatly reduced, and the washing cost is saved. The preparation method of the acidic normal-temperature degreasing agent is simple in operation steps, high in preparation implementation feasibility and high in practicability.

Description

Technical field [0001] The present invention relates to the field of metal degreaser, and more particularly to an acidic normal temperature defective agent and a preparation method. Background technique [0002] Cold-rolled silicon steel plate, cold rolled steel sheet (Volume) such as car board is usually used in the rolling process of acid washing cold rolling, and a plurality of greases (such as natural oil, synthetic grease, etc.), rust inhibitor, anti-electrode pressure The rolled oil (emulsified) composed of the agent or the like is lubricated, cooled and temporarily rust, and therefore, such rolling oil (mainly) will remain on the surface after the steel sheet rolling is completed. Before the rolling steel sheet (volume) continuous annealing, the residual oil and the iron powder remaining on the steel sheet during the rolling process must be removed by chemical degreasing, electrolytic degreasing, to prevent residual oil and iron powder from annealing. Carbonizing the surfa...

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Problems solved by technology

[0006] In actual production, some surface oxidation caused by poor rolling of the steel plate surface often occurs on the steel plant site, or the rolling oil (or emulsion) is unevenly dispersed during the rolling process, and the cold-rolled steel plate is placed for too long Floating rust on the surface of the steel plate due to other reasons; for these cold-rolled steel plates with surface oxidation and floating rust, after cleaning with an alkaline degreasing agent, the slight oxide film and floating rust cannot be removed, thereby affecting the surface quality of the steel plate and Brightness, and also deteriorated the coating adhesion after annealing and painting, resulting in a decrease in the coating adhesion on the surface of the steel plate

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