Formula of iron and steel rust inhibiting liquid

A technology of descaling liquid and formula, applied in the field of formula of iron and steel descaling liquid, can solve the problems of reducing the effective volume of the pickling tank, increasing the difficulty of operation, and high cost, and achieving the effect of facilitating the treatment of three wastes, saving energy and low cost

Inactive Publication Date: 2005-05-11
郑晓明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in this invention, there are many kinds of chemicals used in the formula of derusting liquid, and wherein the cost of chemicals such as hexamethylenetetramine, sodium lauryl sulfate, and dodecyldiethanolamide is relatively high
In addition, during the operation of using the credit rust solution in this process to remove rust from steel, the pickling tank produces more foam, which not only reduces the effective volume of the pickling tank but also increases the difficulty of operation

Method used

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Examples

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Effect test

Embodiment Construction

[0012] The present invention is further described below.

[0013] In the pickling pool, according to this formula, 4 tons of rust removal liquid are prepared, wherein the weight percentages of each composition are: 18% hydrochloric acid, 15% formaldehyde, 0.5% sodium chloride, 0.5% ammonium chloride, and 0.12% polyoxyethylene ether. . 0.7 tons of shelled 6 high carbon steel discs are processed each time. The pan garden is soaked in the rust removal solution for 2-3 minutes, and the surface is shiny off-white. Take out the pan garden from the ground, wash it with water, and carry out phosphating treatment. A uniform and smooth phosphating film is formed on the surface of the pan garden. It is perfect, and no hydrogen embrittlement phenomenon has been found to affect the mechanical strength of the plate. Compared with the sulfuric acid pickling quality used, the quality of pickling is significantly improved. After about 800 tons of olives are washed, the acidity in the picklin...

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PUM

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Abstract

This invention relates to a rust removing liquid. It contains 5-20% hydrochloric acid, 0.7-1.5%formaldehyde, 0.5-1%industrial sodium chloride or ammonium chloride, 0.07-0.12% para-octyl-polyoxyethylene alkyl ether and water. It is used conveniently and effectively. The treated surfaces have no corrosion and are smooth. No hydrogen embrittlement occurs.

Description

technical field [0001] The invention belongs to a formula of iron and steel descaling liquid. The descaling liquid prepared by this formula is suitable for cleaning and descaling steel components before steel processing and coating. The descaling liquid prepared by this formula can be used with any original Purification or other post-processing (including phosphating, hanging dust, painting, painting, copper plating, lubrication, saponification and electroplating, etc.) Background technique [0002] In order to improve the service life of steel and components, the surface of steel must be cleaned and derusted. Strong acid rust removal is a more common method at present, and the most commonly used sulfuric acid pickling process has many disadvantages. If heating is required to waste energy, produce acid mist and seriously pollute the environment, damage the health of workers, take a long time for sulfuric acid pickling, and cause over-corrosion a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/08
Inventor 郑晓明
Owner 郑晓明
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