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Anticorrosive ship side plate with ceramic-based hot spray coating

A corrosion-resistant and coating technology, applied in coating, metal material coating process, melt spraying and other directions, can solve the problems of peeling, corrosion and low service life

Active Publication Date: 2012-05-02
MAANSHAN XINGLONG FOUNDRY CO LTD
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  • Application Information

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Problems solved by technology

[0005] Regardless of whether it is cast zinc-aluminum coating on the surface of marine equipment structural steel or gray cast iron marine side plate coating anti-corrosion, the surface of marine side plate is peeled, bubbled and corroded seriously in marine environment. Generally speaking, the quality of marine side plate Defects such as poor corrosion resistance, low service life and poor reliability

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  • Anticorrosive ship side plate with ceramic-based hot spray coating
  • Anticorrosive ship side plate with ceramic-based hot spray coating

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Embodiment Construction

[0014] See figure 1 , a corrosion-resistant marine side plate with a ceramic-based thermal spray coating, comprising a gray cast iron substrate 2 and a supersonic sprayed seawater corrosion-resistant ceramic-based thermal spray coating 1 compounded on the outer surface of the gray cast iron substrate 2 .

[0015] The ceramic-based thermal spray coating is composed of SiC ceramic powder coated with high-aluminum bronze rare earth alloy. It is sprayed onto the surface of gray cast iron by thermal spraying method. SiC is evenly distributed in the high-alumina bronze coating, and the SiC content is as high as 75%.

[0016] The base body of the side plate is cast by gray cast iron, and the casting method can be sand casting or metal casting. The surface of the casting is sandblasted to remove surface oxides to form a rough pre-treated surface.

[0017] The preparation method of the present invention: the ceramic powder and the mixed powder containing copper, chromium, alumin...

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Abstract

The invention discloses an anticorrosive ship side plate with a ceramic-based hot spray coating. The side plate comprises a gray cast iron matrix and the ceramic-based hot spray coating, wherein the ceramic-based hot spray coating is compounded on the outer surface of the gray cast iron matrix and sprayed by using supersonic and resists seawater corrosion. The ceramic-based hotspray coating is formed by coating a high aluminium bronze rare earth alloy on the SiC ceramic powder surface, and spraying the powder on the gray cast iron surface by using a hot spray method, wherein the SiC is distributed uniformly in the high aluminium bronze coating and the content of the SiC reaches 75%. The SiC ceramic in the ceramic-based hotspray coating is distributed uniformly, and the volume fraction of ceramic powder can reach 75 percent; and the ceramic-based hot spray coating and the gray cast iron matrix are in metallurgical bonding, so that the coating is not fragmented or does not fall; and the corrosion resistance of the side plate is over 5 times that of a gray cast iron side plate, the surface of which is coated with an anti-corrosive paint.

Description

[0001] technical field [0002] The invention relates to the field of ship side plates, in particular to a corrosion-resistant ship side plate with a ceramic-based thermal spray coating. technical background [0003] Corrosion of equipment steel structures in marine climate environments, especially in harsh conditions such as seawater, high temperature, high humidity, high smog, and high sunshine, has become increasingly prominent, and damage caused by corrosion occurs from time to time. The use of zinc-aluminum alloy anti-corrosion coating is one of the effective methods for corrosion protection of steel structures. In practical applications, zinc-aluminum coatings must be sealed with synthetic coatings to prevent corrosion in the gaps connected with the steel substrate. At the same time, this type of coating system is particularly sensitive to pitting corrosion and mechanical damage, which makes the reliability of the anti-corrosion coating system poor. [0004] The gra...

Claims

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Application Information

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IPC IPC(8): C23C4/04
Inventor 张家俊李伟东周发明陈志浩
Owner MAANSHAN XINGLONG FOUNDRY CO LTD
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