Protective cover for corrosion prevention and corrosion repair, and application thereof

Abstract

The invention relates to a corrosion prevention technique, especially to a corrosion prevention and repairing protective cover and uses thereof. The protective cover consists of an anti-soil material layer, a protection material layer, a polyester nonwoven cloth layer as well as a rust protection lipin layer from exterior to interior. A connection part is opened on the axial direction of the protective cover, two opposite sides of the connection part is equipped with an outward turnup edge fold. The inventive protective cover is convenient for dissembling, can be repeatedly used after opening and check-up, in addition, the covering layer can also endure slight damnification, and will not denaturate in the seawater surroundings after mounting. The invention not only is suitable for new sea steel construction article antisepticise and anti-soil, but also suitable for repairs of the corroded steel construction article. Thus the economy effective handy construction protection method, ensures normal work of dirt-proof boot and facilities, reduces maintenance cost, saves manpower and material resources, and improves durability.

Description

Technical field [0001] The invention relates to corrosion protection technology, in particular to a protective cover for corrosion protection and repair and its application. Background technique [0002] The steel structure exposed to the marine environment reacts electrochemically with the surrounding seawater medium to be corroded, and the cyclic movement of the water body such as wind, waves, currents, and tides in the ocean not only increases the dissolved oxygen content in the seawater, but also makes it at the same time Withstand the effect of alternating loads. Marine steel structures, such as marine oil production platforms, steel pile wharfs, trestle bridges, mooring piers and light beacons, must resist severe corrosion damage, such as strong wave impact and years of seawater corrosion. [0003] In the splash area, the steel surface is often wet and dry due to the periodic wetting of seawater. The oxygen supply is sufficient and the salt is continuously concentrated. At ...

AI Technical Summary

Problems solved by technology

Especially for the existing steel structures, after the corrosion of the steel in the splash area and tidal range area, it is difficult to protect such as painting paint, even if the coating with water is used, when the first coating reaches the anti-corrosion period In the second or more times of construction, since the surface of marine steel facilities cannot meet the requirements of re-spraying operations, the anti-corrosion effect of the first coating will be far behind, and the anti-corrosion period will be longer than the first time. Shorter and will get shorter, while the cost will be higher and higher

[0007] In the tidal range area, due to the short time interval between ebb and flow (generally about 6 hours), it is very difficult to repair and paint on site, especially before painting The pretreatment of the steel surface (shoveling or sandblasting) is difficult to meet the requirements of the regulations. After painting, the paint film is not fully cured and soaked in seawater, which greatly reduces the bonding strength and anti-corrosion performance of the paint and the steel surface; in addition, Generally, when the paint is painted on the wet steel surface, the adhesion of the paint film is very poor, and it is easy to be damaged and peeled off in the early stage.

Therefore, these methods are not suitable for the repair of steel structures in the sea.

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