Surface treatment water liquid for removing stainless steel surface oxidation involucra and application thereof
A surface treatment and surface oxidation technology, which is applied in the field of metal surface treatment aqueous solution, can solve problems such as long time required, operator and industrial safety hazards, and uneconomic benefits, so as to improve the quality of workpieces and shorten the production process.
Inactive Publication Date: 2008-06-04
CHANG GUNG UNIVERSITY
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Problems solved by technology
[0005] If the weldment is a small workpiece or detachable, the treatment method is to place the weldment in a highly corrosive liquid and boil it at high temperature for more than half an hour. However, due to the danger of corrosive liquid, And it must be heated at high temperature, so it often causes hazards to operators and work safety during the operation
[0006] In addition, for large non-detachable welded components, the treatment method is to apply highly corrosive paste liquid. Although this method is effective, the medicines are expensive, and it takes a lot of medicines to apply large areas. Therefore, it is not economical, and it takes a long time to smear a large area, often requiring several hours or even more than one day of work time
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[0030] For the composition of the aforementioned metal surface treatment aqueous solution, the present inventors matched various component ratios, and the preferred component ratios of these formulations are as follows;
[0031]
[0032] For the aforementioned formula ratios, numbers 6, 8, 10, and 12 are the optimal ratios of the metal surface treatment aqueous solution of the present invention.
[0033] With the composition of the metal surface treatment aqueous solution of the present invention, the metal surface treatment aqueous solution composition is used to treat the oxide film on the surface of stainless steel after welding. The steps are as shown in the first figure, including:
[0034] S1: Workpiece production, welding on the stainless steel welding object, so that the surface of the stainless steel welding object produces an oxide film;
[0035] S2: Degreasing: remove the grease and dirt remaining on the surface of stainless steel welding objects to make the surf...
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The invention provides a surface treatment water solution for removing surface oxidation coating of stainless steel and an application thereof, wherein each liter of water solution is added with 0.1 to 2 g of Carboxylic acid, 4 to 40g of Chloride ion, 4 to 40g of Nitric acid ion, 10 to 100g Fluorine Compounds and 5 to 50g of additive, forming the surface treatment water solution which removes the surface oxidation coating of stainless steel after the metal bonding in the chemical spraying or etching mode, thereby shorten the process of removing the oxidation coating and meeting the requirement of improving the quality of the work pieces.
Description
technical field [0001] The invention relates to a surface treatment aqueous solution for removing oxide film on the surface of stainless steel and its application, especially a metal surface treatment aqueous solution used by chemical spraying or etching to remove the oxide film on the surface of stainless steel after welding. Background technique [0002] Press, due to its excellent corrosion resistance, mechanical properties, processability and weldability, stainless steel is widely used in household kitchen utensils, utensils, chemical storage tanks, raw material transportation pipelines and building appearances, etc., which require corrosion resistance. [0003] Welding is often required during stainless steel construction. However, the surface of the workpiece after welding usually forms an oxide layer with a thickness of tens of microns. This oxide layer is not only unfavorable for subsequent processing and assembly, but also seriously affects the appearance of the stai...
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IPC IPC(8): C23G1/08C23G5/02
Inventor 黄清安许俊清
Owner CHANG GUNG UNIVERSITY