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Corrosion inhibitor and application thereof

A technology of corrosion inhibitor and pickling corrosion inhibitor, which is applied in the field of materials, can solve the problems of hindering the reaction of hydrogen ions and iron matrix, and achieve the effect of ensuring decontamination, simple process and safe operation

Active Publication Date: 2014-07-16
BEIJING JUEXIN SHENGDA TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From a thermal point of view, when the iron matrix reacts with acid, phytate ions promote the dissolution and corrosion of the iron matrix by forming complexes with ferrous ions, but in terms of kinetics, due to the reaction of iron and hydrogen ions to generate hydrogen and ferrous Ions, most of the hydrogen escapes from the surface of the iron matrix, and the ferrous ions form complexes with the ferrous ions near the surface of the iron matrix, and form a thin film layer, which hinders the reaction of hydrogen ions with the iron matrix

Method used

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  • Corrosion inhibitor and application thereof
  • Corrosion inhibitor and application thereof
  • Corrosion inhibitor and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024]

[0025] Comparative Experiment

[0026] Experimental location: Steel Rolling Analysis Center, Quality Inspection Department, Manufacturing Department, Shougang Jingtang Company;

[0027] Purpose:

[0028] 1. Qualitative evaluation and comparison of the improvement of the surface quality of steel coils by two corrosion inhibitors;

[0029] 2. Qualitatively evaluate and compare the effects of two corrosion inhibitors on reducing bubbles, and observe the foam generation;

[0030] 3. Quantitatively calculate and compare the corrosion inhibition efficiency of two corrosion inhibitors;

[0031] Experimental procedure

[0032] Table 1 Preparation before experiment

[0033]

[0034]

[0035] experiment process

[0036] Add 500mL of acid solution to three 600ml beakers in equal amounts and heat in an electric water bath to maintain the temperature at 80°C. After the temperature stabilized, one beaker was used as a blank sample, and Jinkejing corrosion inhibitor a...

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Abstract

The invention discloses a corrosion inhibitor and application thereof. The corrosion inhibitor is a corrosion inhibitor in organic acid cleaning and is prepared from the following raw materials by weight percent: 10%-50% of phytic acid, 20%-40% of urotropin, 0.5%-3% of citric acid, 0.5%-5% of sodium nitrate, 0.5%-2% of anion active agent and the balance of water.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a corrosion inhibitor and its application. Background technique [0002] The hydrogen ions released by traditional corrosion inhibitors during the pickling process diffuse into the steel matrix, causing uneven, crisp, and over-corrosion on the steel surface. Due to over-corrosion, the yield of steel is low, and the released hydrogen chloride gas pollutes Air is also harmful to the human body. The selection of high-quality pickling corrosion inhibitor directly affects the effect of pickling quality, such as reducing iron loss, acid consumption, improving the surface quality of steel products and subsequent production processes, which are the guarantee for iron and steel enterprises to save energy, produce efficiently and pursue first-class products . The existing corrosion inhibitors have poor corrosion inhibition ability. During the pickling process, more hydrogen...

Claims

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Application Information

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IPC IPC(8): C23G1/06C23G1/08
Inventor 苏鹏程萍马波
Owner BEIJING JUEXIN SHENGDA TECH DEV
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