Anticorrosion cladding method of complex joint of ocean platform

Abstract

The invention discloses an anticorrosion cladding method of a complex joint of an ocean platform, which comprises the following steps of: (1) carrying out manual rust removal / or blast sanding on a to-be-processed steel structure of the complex joint of the ocean platform; (2) coating corrosion inhibition repair cream on the surface of the steel structure which is subjected to the processing in the step (1); (3) sticking a mineral oil anti-corrosion band on the corrosion inhibition repair cream; and (4) coating unsaturated polyester resin on the mineral oil anti-corrosion band, sticking the glass wool cloth on the unsaturated polyester resin, coating the unsaturated polyester resin on the glass wool cloth, and rolling. The invention has the beneficial effects that the construction is convenient, the surface processing is simple, and the anticorrosion cladding method is suitable for an object with any shape and any structure; and by adopting the method, the complex joint of the ocean platform has good sealability, impact resistance and excellent anticorrosion effect, is environmental-friendly, and has no toxicity or pollution. The anticorrosion cladding method can be suitable for the cladding corrosion resistance of any complex joint of the ocean platform.

Description

Technical field [0001] The invention relates to an anti-corrosion coating method for marine steel structures, in particular to an anti-corrosion coating method at complex nodes of an offshore platform. Background technique [0002] The ocean is a huge treasure house of resources. With the development of science and technology and the continuous increase of population, the resources on land are becoming less and less able to meet the needs of economic development, and the development and utilization of marine resources is becoming more and more important in the national economy. important. It has been proven that China’s offshore oil resources account for 1 / 4 of the country’s total oil production. The Bohai Oilfield alone has a total proven reserves of more than 4.5 billion tons, and my country will invest more than 50 billion yuan in the Bohai Sea in the next five years. Build 50 oil production platforms and 1,100 production wells. Due to the toughness, high strength, and low pr...

AI Technical Summary

Problems solved by technology

Due to the high toughness, high strength and low price of steel materials, these oil production platforms are currently made of steel materials, and the severe corrosion of steel will inevitably directly threaten the safety of these oil production platforms and cause serious economic losses. It is very urgent to study the corresponding protection of oil platforms

Due to the reason of welding, pitting corrosion and weld corrosion are very easy to occur at the complex nodes of the platform, which will cause additional stress concentration and fatigue cracks, which makes the complex nodes one of the areas most prone to corrosion on offshore platforms. Therefore, how to effectively The prevention of corrosion of complex nodes is also the focus of anti-corrosion work

At present, sacrificial anodes are generally used to protect the complex nodes of the platform, but the weight of the anodes used in the platform is more than a few hundred tons, which adds additional load to the platform and causes a lot of waste of resources; and the price of aluminum and zinc continues to rise. It also causes a waste of financial resources for the country and enterprises; a large amount of dissolved aluminum and zinc will pollute the sea area environment, causing huge pollution disasters to the marine environment of our country