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Additive for pickling degreasing and derusting of steel

An iron and steel pickling and additive technology, applied in the fields of steel pickling, degreasing and rust removal, rust removal, corrosion inhibition and fog suppression, pickling and degreasing, and can solve the problems of low oil removal rate and poor corrosion inhibition effect, etc. The effect of strong degreasing and degreasing effect

Inactive Publication Date: 2010-11-03
南通鑫凯界面工程科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing degreasing agent products in the market have some disadvantages such as poor corrosion inhibition effect and low degreasing rate.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Test conditions: 15% hydrochloric acid, temperature 25°C, 30# engine oil.

[0015]

[0016] The test results show that the high-efficiency degreasing and rust removing additive of the present invention is applied in hydrochloric acid under normal temperature conditions, and has excellent degreasing effect and good corrosion inhibiting effect at the same time.

Embodiment 2

[0018] Experimental conditions: hydrochloric acid 250ml / L, sulfuric acid 140ml / L, temperature 25°C, 30# engine oil.

[0019]

[0020] The test results show that the high-efficiency degreasing and derusting additive of the present invention is applied in hydrochloric acid-sulfuric acid mixed acid under normal temperature conditions, and has excellent degreasing effect and good corrosion inhibition effect at the same time.

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PUM

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Abstract

The invention relates to an additive for pickling degreasing and derusting of steel, which is mainly applied to pickling degreasing and derusting, corrosion inhibition and fog inhibition in the pretreatment process of plating and coating of a steel assembly. The additive comprises the components by weight percent: 0 to 2% of methenamine, 0 to 1% of oleic acid-based imidazoline corrosion inhibitor, 0 to 10% of JFC-M, 0 to 5% of degreasing agent, 0 to 4% of sodium dodecylsulfate and the balance of water. The additive has the advantages of simple preparation and low cost, and is characterized in that the additive is applicable to degreasing and derusting of the steel assembly in hydrochloric acid, sulfuric acid or mixing acid of hydrochloric acid and sulfuric acid and also has good corrosion inhibition and fog inhibition performance. The general addition quantity is 1% to 2% of acid solution quality. In use, the addition quantity can be properly regulated according to the real acid solution concentration and the surface condition of the assembly.

Description

technical field [0001] The invention relates to a pickling degreasing and derusting additive for iron and steel, which is mainly used for pickling degreasing, derusting and corrosion and fog suppression in the electroplating and pre-coating process of steel components. The invention belongs to the technical field of metal surface cleaning treatment. Background technique [0002] The degreasing and derusting of metal parts before electroplating and coating is the key process to ensure the quality of coatings and coatings. The traditional degreasing and derusting process is to carry out alkaline degreasing first, and then pickling and derusting after washing with water, that is, Oil removal and rust removal are carried out step by step. This traditional method not only has cumbersome procedures and takes up a lot of land, but also consumes too much cleaning water and chemicals. In order to solve the above problems and achieve the purpose of simplifying the process and shorte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/06C23G1/08
Inventor 郑建黄伟
Owner 南通鑫凯界面工程科技有限公司
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