The method of fixing corroded defects of metal surfaces

 

(57) Abstract:

The invention relates to the field of engineering, namely, the sealing corroded defects metal, used especially in tightly closed habitable compartments in the composition of the spacecraft (CLA), and can also be used successfully in the oil and gas industry, agriculture, utilities and other industries. The method of fixing corroded defects of metal surfaces is that the metal surface is sanded, and the area of the defect causing the material preventing the development of corrosion, cleaning the surface of perform around the area of the defect, and the quality of the material, preventing the development of corrosion, apply low viscosity anaerobic sealant and metallopolymer Germeter-1, while after cleaning the surface around the area of the defect, corroded surface in the defect zone is impregnated with low viscosity anaerobic sealant, and after curing the impregnated surface with overlapping sealed by a continuous layer of metallopolymer Germeter-1 and after a time his vitality put the second splosh the Denia. The method is highly reliable elimination of corrosion damage and can be used inside the habitable compartments of KLAH. This prevents the spread of corrosion corroded zone significantly increases the reliability and operating life of KLAH.

The present invention relates to the field of engineering, namely, the sealing corroded defects metal, used especially in tightly closed habitable compartments in the composition of the spacecraft (CLA) can also be successfully used in the oil and gas industry, agriculture, utilities and other industries.

The relevance of developing a method of fixing corroded defects of the metal is determined by the need to prevent further corrosion damaged areas especially in conditions of high temperature and humidity, which is extremely important, for example, the repair of covering the spacecraft and associated with the extension of the resource efficiency of products, value economic value and security of the crew KLAH.

OBRAZOVATEL rust, containing phosphoric acid (see "Primer - modifier rust EP-0199. TL6-10-2084-860).

The disadvantage of this method is the inadmissibility of the acid treatment, for example, plating of ships and the inability to implement mandatory water rinse treated surfaces in zero gravity.

A prototype of the chosen method of protection of the surfaces of the parts from corrosion, which consists in applying to the damaged surface coatings. This method is widely known and described in the literature, in particular in the EAST 92-1481-79 "Coating paint for metal surfaces".

However, elimination of corrosion damage, such as in the skin KLAH, this way is unacceptable, as it requires a mandatory cleaning corroded surfaces from corrosion products, which may lead to a decrease in the thickness of a thin (3 mm) plating up to its destruction and depressurization of the object.

The task of the invention is to develop a method of sealing corrosion damage to metal surfaces, with the reliability that does not require pre-Stripping of the damaged zone of corrosion products, not leading the natural enemy to prolong the life of products, in particular KLAH, to increase the reliability of the method of fixing corroded defects and significantly increase the safety of the crew stay on Board.

The method of fixing corroded defects of metal surfaces is that the metal surface is sanded, and the area of the defect causing the material preventing the development of corrosion, unlike the prototype, the sweep surface carry around the area of the defect, and the quality of the material, preventing the development of corrosion, apply low viscosity anaerobic sealant and metallopolymer Germeter-1, while after cleaning the surface around the area of the defect, corroded surface in the defect zone is impregnated with low viscosity anaerobic sealant, and after curing the impregnated surface with overlapping sealed by a continuous layer of metallopolymer Germeter-1, and after a time his vitality put the second continuous layer of metallopolymer Germeter-1 overlapping the first, and then produce the extract prior to final curing.

When the process is complete impregnation anaerobic sealant loose layer of corrosion products, ensuring the filling of the Germa who eat corrosion products.

While in the outer surface microlayer defective zone anaerobic sealant remains uncured due to direct contact with oxygen, which is the inhibitor of its polymerization and curing respectively. In this case, dauvergne anaerobic sealant in the outer microlayer corroded volume is provided after application and curing metallopolymer Germeter-1, forming a dense glued airtight layer on the outer surface of the defective zone, preventing the penetration of air and moisture in the corroded layer.

The technical result of the proposed method of fixing corroded surfaces is to increase its reliability, security and preservation of operational properties closed up surfaces, which eliminates the possibility of damage to the surfaces, including the linings of the product.

This method completely eliminates the contents of the initiators of corrosion: air and moisture in the volume of corrosion products and prevents the flow of air and moisture in the corroded area.

The proposed method is as follows.

Around the area of corrosion defect on the Sam is blenny from a material softer, than the metal of the damaged structure, and then produce defatting of the defective area and the adjacent bare surface, followed by drying to remove the solvent. Next, the area of the defect-containing corrosion products, and the surrounding cleared area impregnated with low viscosity anaerobic sealant type Anyterm-1U for OST 92-1005-84. After about 2 hours nepetifolia excess removed with a swab moistened with solvent and tightly wrung out, and then produce the drying surface to remove the solvent. Later in the defect zone and adjacent bare surface rubbing thin continuous layer of metallopolymer Germeter-1 and maintain it until the end of time its viability. Then put the second continuous layer of metallopolymer Germeter-1, ensuring full coverage of the first layer, followed by exposure of metallopolymer Germeter-1 for at least 36 hours.

The proposed method is characterized by simple technology sealing proceratium defects, high reliability eliminate corrosion damage and can be used inside the habitable compartments of KLAH. This prevents the spread of corrosion corroded zone, sushestvovanii defects on the layout of the hull.

The method of fixing corroded defects metal surface, including cleaning the metal surface and application of a material that prevents the development of corrosion, characterized in that the cleaning of metal surfaces carry around the area of the defect, and the quality of the material, preventing the development of corrosion, use low viscosity anaerobic sealant and metallopolymer Germeter-1, whereby the area of the defect cause low viscosity anaerobic sealant, and metallopolymer Germeter-1 applied in two layers with the first layer is applied after curing anaerobic sealant overlapping area of the defect, and after a time his vitality put the second layer overlapping the first, then exercise patience until the final curing metallopolymer Germeter-1.

 

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