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An anti-corrosion marine stainless steel pipe

A stainless steel tube and anti-corrosion technology, applied in furnaces, heat treatment equipment, manufacturing tools, etc., can solve problems such as unsatisfactory corrosion resistance and easy corrosion, improve corrosion resistance and oxidation resistance, and prevent intergranular corrosion. , the effect of dense protection

Active Publication Date: 2022-05-27
安徽天康特种钢管有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The stainless steel pipes used in general ships are prone to corrosion due to long-term exposure to high moisture content environments. Therefore, the stainless steel pipes used in ships have higher requirements for their corrosion resistance. After anti-corrosion treatment, its corrosion resistance is still not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] This embodiment provides an anti-corrosion marine stainless steel pipe, including the anti-corrosion stainless steel pipe and the anti-corrosion paint applied to the surface of the anti-corrosion stainless steel pipe. In terms of mass percentage, the anti-corrosion stainless steel pipe includes the following elements:

[0043] Chromium Cr: 14%;

[0044] Nickel Ni: 10%;

[0045] Titanium Ti: 0.1%;

[0046] Niobium Nb: 0.1%;

[0047] Molybdenum Mo: 1.5%;

[0048] Silicon Si: 0.8%;

[0049] Carbon C: 0.03%;

[0050] Sulfur S: 0.015%;

[0051] Nitrogen N: 0.01%.

[0052] The balance is Fe and other unavoidable impurities, and the sum of the mass percentages of the above elements is 100%.

[0053] In this embodiment, the anti-corrosion coating adopts one of alcohol-soluble phenolic resin, modified phenolic resin, pure phenolic resin or polyurea elastic coating.

[0054] A preparation method of the above-mentioned anti-corrosion marine stainless steel pipe, comprising...

Embodiment 2

[0072] This embodiment provides an anti-corrosion marine stainless steel pipe, including the anti-corrosion stainless steel pipe and the anti-corrosion paint applied to the surface of the anti-corrosion stainless steel pipe. In terms of mass percentage, the anti-corrosion stainless steel pipe includes the following elements:

[0073] Chromium Cr: 17%;

[0074] Nickel Ni: 15%;

[0075] Titanium Ti: 0.2%;

[0076] Niobium Nb: 0.2%;

[0077] Molybdenum Mo: 3.0%;

[0078] Silicon Si: 0.9%;

[0079] Carbon C: 0.05%;

[0080] Sulfur S: 0.025%;

[0081] Nitrogen N: 0.15%.

[0082] The balance is Fe and other unavoidable impurities, and the sum of the mass percentages of the above elements is 100%.

[0083] In this embodiment, the anti-corrosion coating adopts one of alcohol-soluble phenolic resin, modified phenolic resin, pure phenolic resin or polyurea elastic coating.

[0084] A preparation method of the above-mentioned anti-corrosion marine stainless steel pipe, comprising...

Embodiment 3

[0102] This embodiment provides an anti-corrosion marine stainless steel pipe, including the anti-corrosion stainless steel pipe and the anti-corrosion paint applied to the surface of the anti-corrosion stainless steel pipe. In terms of mass percentage, the anti-corrosion stainless steel pipe includes the following elements:

[0103] Chromium Cr: 20%;

[0104] Nickel Ni: 20%;

[0105] Titanium Ti: 0.3%;

[0106] Niobium Nb: 0.3%;

[0107] Molybdenum Mo: 4.0%;

[0108] Silicon Si: 1.0%;

[0109] Carbon C: 0.08%;

[0110] Sulfur S: 0.04%;

[0111] Nitrogen N: 0.3%.

[0112] The balance is Fe and other unavoidable impurities, and the sum of the mass percentages of the above elements is 100%.

[0113] In this embodiment, the anti-corrosion coating adopts one of alcohol-soluble phenolic resin, modified phenolic resin, pure phenolic resin or polyurea elastic coating.

[0114] A preparation method of the above-mentioned anti-corrosion marine stainless steel pipe, comprising t...

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PUM

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Abstract

The invention relates to an anti-corrosion marine stainless steel pipe, which includes an anti-corrosion stainless steel pipe and an anti-corrosion coating applied on the surface of the anti-corrosion stainless steel pipe. The anti-corrosion stainless steel pipe includes the following elements in terms of mass percentage: chromium Cr; nickel Ni; titanium Ti ; Niobium Nb; Molybdenum Mo; Silicon Si; Carbon C; Sulfur S; Nitrogen N. The present invention can effectively avoid electrochemical corrosion through the chromium element; the coating formed after the anti-corrosion paint is dried and solidified on the surface of the stainless steel pipe prevents the existence of the corrosive medium on the surface of the stainless steel pipe, and cuts off the influence of water, oxygen and ions on the paint film Penetration, the dense protective effect on stainless steel pipes, can effectively improve the corrosion resistance and oxidation resistance of stainless steel pipes.

Description

technical field [0001] The present invention and the technical field of stainless steel pipes, in particular, are an anti-corrosion marine stainless steel pipe and a preparation method thereof. Background technique [0002] Generally, stainless steel pipes used on ships are prone to corrosion because they are in an environment with high moisture content for a long time. Therefore, stainless steel pipes for ships have higher requirements on their corrosion resistance. However, although the existing stainless steel pipes for ships are After anti-corrosion treatment, its corrosion resistance is still not ideal. In view of this, we propose an anti-corrosion marine stainless steel pipe and its preparation method. SUMMARY OF THE INVENTION [0003] In order to make up for the above deficiencies, the present invention provides an anti-corrosion marine stainless steel pipe and a preparation method thereof. [0004] The technical scheme of the present invention is: [0005] An an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/50C22C38/48C22C38/44C22C38/02C21D9/08B05D5/00B05D7/24B05D7/14B05D1/38
CPCC22C38/50C22C38/48C22C38/44C22C38/02C22C38/001C21D9/08B05D5/00B05D7/24B05D7/14B05D7/544B05D7/546
Inventor 丁玉山殷世清赵建国
Owner 安徽天康特种钢管有限公司
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