Environmentally friendly metal rust remover and production method thereof

A production method and technology for a rust remover, applied in the field of environmentally friendly metal rust remover, can solve problems such as economic loss, damage to workpiece material corrosion, influence on workpiece quality, etc., and achieve the effects of low cost, rapid rust removal, and environmental friendliness

Inactive Publication Date: 2015-06-17
DALIAN KELINER CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Metal workpieces are prone to rust when placed outdoors or in the open air, which not only affects the quality of the workpiece, but also affects the normal progress of painting, bonding and other processes. If it is not handled in time, the materials will be scrapped and unnecessary economic losses will be caused.
At present, the rust remover used often destroys the material of the workpiece itself and causes corrosion while derusting the workpiece, and also produces a large amount of waste gas and waste liquid while derusting, seriously affecting the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] A kind of environment-friendly metal derusting agent, used raw material and weight percentage are as follows:

[0016] Hydrochloric acid 10-20%

[0017] Tartaric acid 15~25%

[0018] Urea 5 ~ 13%

[0019] Sodium sulfite 11~19%

[0020] Sodium hydroxide 5 ~ 10%

[0021] Corrosion inhibitor 0.5 ~ 2.5 %

[0022] Deionized water balance.

[0023] The environment-friendly metal rust remover and its production method are carried out as follows: under normal temperature and pressure conditions, add deionized water, hydrochloric acid, sodium sulfite and urea into the container, stir and dissolve all of them, then add tartaric acid and sodium hydroxide, After stirring to dissolve completely, add corrosion inhibitor and stir, sample and test, and enter the packaging procedure.

[0024] The test item indicators are as follows:

[0025] project set technical standards Test results Detection method Exter...

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PUM

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Abstract

The invention discloses an environmentally friendly metal rust remover. The environmentally friendly metal rust remover comprises 10-20wt% of hydrochloric acid, 15-25wt% of tartaric acid, 5-13wt% of urea, 11-19wt% of sodium sulfite, 5-10wt% of sodium hydroxide, 0.5-2.5wt% of a corrosion inhibitor, and the balance of deionized water. A production method of the environmentally friendly metal rust remover comprises the following steps: adding deionized water, hydrochloric acid, sodium sulfite and urea into a container at normal temperature under normal pressure, stirring until complete mutual dissolution, adding tartaric acid and sodium hydroxide, stirring, adding the corrosion inhibitor after complete dissolution, sampling, detecting, and packaging.

Description

technical field [0001] The invention relates to the field of fine chemical industry, in particular to an environment-friendly metal derusting agent with low cost, which does not cause corrosion to the material of workpieces while derusting quickly, and a production method thereof. [0002] and production methods. Background technique [0003] Metal workpieces are prone to rust when placed outdoors or in the open air, which not only affects the quality of the workpiece, but also affects the normal progress of painting, bonding and other processes. If it is not handled in time, the materials will be scrapped and unnecessary economic losses will be caused. . At present, the rust remover used often destroys the material of the workpiece itself to cause corrosion while derusting the workpiece, and also produces a large amount of waste gas and waste liquid while derusting, which seriously affects the environment. Contents of the invention [0004] The present invention aims to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/04
Inventor 隋虹
Owner DALIAN KELINER CHEM TECH
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