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Cr steel oxide cleaning agent material composition, Cr steel oxide cleaning agent as well as preparation method and application thereof

A material composition and oxide technology, applied in the field of Cr steel oxide cleaning agent material composition, can solve the problems of fracture morphology observation and component analysis obstacles, complex process conditions, and high cleaning agent costs

Inactive Publication Date: 2018-06-29
THERMAL POWER TECH RES INST OF CHINA DATANG CORP SCI & TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the application process, Cr steel inevitably fails, and its fracture surface is rapidly oxidized in a high-temperature and high-pressure environment, which brings serious obstacles to the subsequent observation of fracture morphology and composition analysis. The current cleaning of some Cr steel oxides Most of the methods use high-temperature hot alkali boiling or electrochemical methods, the relative process conditions are complicated, and the cost of cleaning agents is high

Method used

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  • Cr steel oxide cleaning agent material composition, Cr steel oxide cleaning agent as well as preparation method and application thereof
  • Cr steel oxide cleaning agent material composition, Cr steel oxide cleaning agent as well as preparation method and application thereof
  • Cr steel oxide cleaning agent material composition, Cr steel oxide cleaning agent as well as preparation method and application thereof

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preparation example Construction

[0025] The present invention also provides a preparation method of a Cr steel oxide cleaning agent, wherein the preparation method comprises: preparing a hydrochloric acid solution with a concentration of 10-30%, and adding 0.3-1.0 g of six Methylenetetramine for mixing.

[0026] In a preferred embodiment of the present invention, in order to make the cleaning effect of the obtained Cr steel oxide cleaning agent better, and the cleaning efficiency is higher, the concentration of the hydrochloric acid solution configured is 20%, and every 100mL of the hydrochloric acid solution 0.6 g of hexamethylenetetramine was added and mixed.

[0027] Among them, when mixing, it can be mixed manually at room temperature, and in order to make the mixing more uniform and the mixing speed faster, in a preferred embodiment of the present invention, hexamethylenetetramine is added to the hydrochloric acid solution The mixing temperature during mixing is 30-40° C., and the mixing process is stir...

Embodiment 1

[0038] 1) Prepare a hydrochloric acid solution with a concentration of 20%.

[0039] 2) According to the configuration volume of the hydrochloric acid solution, 0.6 g of hexamethylenetetramine was added to every 100 mL of the hydrochloric acid solution for mixing to prepare the Cr steel oxide cleaning agent A1.

[0040] 3) Put the Cr steel sample to be cleaned in a container, pour cleaning agent A1 into the container, and make the cleaning agent submerge the oxidized parts of the sample to be cleaned.

[0041] 4) Put the container into an ultrasonic device and ultrasonically clean it for 35 minutes to obtain Cr steel sample B1 after cleaning.

Embodiment 2

[0043] 1) Prepare a 15% hydrochloric acid solution.

[0044] 2) According to the configured volume of the hydrochloric acid solution, 0.3 g of hexamethylenetetramine was added to every 100 mL of the hydrochloric acid solution for mixing to prepare the Cr steel oxide cleaning agent A2.

[0045] 3) Put the Cr steel sample to be cleaned in a container, pour cleaning agent A2 into the container, and make the cleaning agent submerge the oxidized parts of the sample to be cleaned.

[0046] 4) Put the container into an ultrasonic device and ultrasonically clean it for 50 minutes to obtain Cr steel sample B2 after cleaning.

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Abstract

The invention relates to a Cr steel oxide cleaning agent material composition, a Cr steel oxide cleaning agent as well as a preparation method and application thereof. The composition is prepared fromhydrochloric acid and hexamethylene tetramine, wherein the ratio of the hydrochloric acid to the hexamethylene tetramine is as follows: the amount of the hexamethylene tetramine is 0.3-1.0g in every100mL of hydrochloric acid with a concentration of 10-30%. The Cr steel oxide cleaning agent is prepared by mixing the hydrochloric acid and the hexamethylene tetramine according to a certain ratio; the preparation method is simple; the prepared cleaning agent is simple, convenient and fast to use, and can effectively remove Cr steel oxides; furthermore, the raw materials of the cleaning agent ischeap and easy to obtain, so that the preparation cost of the cleaning agent is lower.

Description

technical field [0001] The invention relates to the field of Cr steel cleaning materials, in particular to a Cr steel oxide cleaning agent material composition, cleaning agent, preparation method and application. Background technique [0002] With the development of ultra-supercritical technology, the application of Cr steel in thermal power units is increasing. In the application process, Cr steel inevitably fails, and its fracture surface is rapidly oxidized in a high-temperature and high-pressure environment, which brings serious obstacles to the subsequent observation of fracture morphology and composition analysis. The current cleaning of some Cr steel oxides Most of the methods use high-temperature hot alkali boiling or electrochemical methods, the relative process conditions are complicated, and the cost of cleaning agents is relatively high. Contents of the invention [0003] In order to solve the above technical problems, the object of the present invention is to...

Claims

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Application Information

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IPC IPC(8): C23G1/08
CPCC23G1/08
Inventor 王庆峰董树青张新刘长福郭德瑞李炜丽张学星杜双明蔡文河
Owner THERMAL POWER TECH RES INST OF CHINA DATANG CORP SCI & TECH RES INST
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