JP4447448B2 - 腐食診断方法 - Google Patents
腐食診断方法 Download PDFInfo
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- JP4447448B2 JP4447448B2 JP2004375669A JP2004375669A JP4447448B2 JP 4447448 B2 JP4447448 B2 JP 4447448B2 JP 2004375669 A JP2004375669 A JP 2004375669A JP 2004375669 A JP2004375669 A JP 2004375669A JP 4447448 B2 JP4447448 B2 JP 4447448B2
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- corrosion
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- steel
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Images
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- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Description
(1)腐食環境において使用される金属製の機器あるいは構造物において、これらを構成している金属材料と同一組成の金属からなり、腐食原因物質に直接接触する母材が露出した部分と、高耐食材料により被覆された部分が表裏面として対を構成している腐食診断用部品を設け、高耐食材料側から超音波を送り反射波を解析することで、前記腐食診断用部品の残存板厚を計測し、該残存板厚の計測値に基づいて前記金属製の機器あるいは構造物の腐食侵食度を診断することを特徴とする腐食診断方法。
(2)前記高耐食材料が、膜厚20μm以上の有機被覆であることを特徴とする上記(1)の腐食診断方法。
(3)前記高耐食材料が、亜鉛あるいはアルミニウムを主成分とするメッキ層であることを特徴とする上記(1)の腐食診断方法。
(4)前記高耐食材料が、亜鉛あるいはアルミニウムの微粒子を含む有機被覆層であることを特徴とする上記(1)の腐食診断方法。
(5)前記高耐食材料が、ステンレス鋼、ニッケル基合金、純チタン、チタン合金、アルミニウム、アルミニウム合金、銅、銅合金のいずれかであることを特徴とする上記(1)の腐食診断方法。
(6)前記高耐食材料の表面に有機被覆が存在することを特徴とする上記(3)〜(5)の腐食診断方法。
(7)前記高耐食材料と金属母材露出部の外表面における境界部が電気的に絶縁されていることを特徴とする上記(3)〜(6)の腐食診断方法。
(8)前記腐食環境において使用される金属製の機器あるいは構造物を構成している金属材料が、耐候性鋼であることを特徴とする上記(1)〜(7)の腐食診断方法。
(9)前記腐食環境において使用される金属製の機器あるいは構造物を構成している金属材料が、質量百分率でクロムを7%以上14%以下含有する鋼であることを特徴とする上記(1)〜(7)の腐食診断方法。
2 腐食診断部品
3 クロスカット
4 高耐食材料
5 金属母材露出部
6 固定用ボルト
7 固定用台座
8 固定用ナット
9 有機被覆
10 絶縁被覆
11 有機絶縁被覆
Claims (9)
- 腐食環境において使用される金属製の機器あるいは構造物において、これらを構成している金属材料と同一組成の金属からなり、腐食原因物質に直接接触する母材が露出した部分と、高耐食材料により被覆された部分が表裏面として対を構成している腐食診断用部品を設け、高耐食材料側から超音波を送り反射波を解析することで、前記腐食診断用部品の残存板厚を計測し、該残存板厚の計測値に基づいて前記金属製の機器あるいは構造物の腐食侵食度を診断することを特徴とする腐食診断方法。
- 前記高耐食材料が、膜厚20μm以上の有機被覆であることを特徴とする請求項1に記載の腐食診断方法。
- 前記高耐食材料が、亜鉛あるいはアルミニウムを主成分とするメッキ層であることを特徴とする請求項1に記載の腐食診断方法。
- 前記高耐食材料が、亜鉛あるいはアルミニウムの微粒子を含む有機被覆層であることを特徴とする請求項1に記載の腐食診断方法。
- 前記高耐食材料が、ステンレス鋼、ニッケル基合金、純チタン、チタン合金、アルミニウム、アルミニウム合金、銅、銅合金のいずれかであることを特徴とする請求項1に記載の腐食診断方法。
- 前記高耐食材料の表面に有機被覆が存在することを特徴とする請求項3〜5のいずれかに記載の腐食診断方法。
- 前記高耐食材料と金属母材露出部の外表面における境界部が電気的に絶縁されていることを特徴とする請求項3〜6のいずれかに記載の腐食診断方法。
- 前記腐食環境において使用される金属製の機器あるいは構造物を構成している金属材料が、耐候性鋼であることを特徴とする請求項1〜7のいずれかに記載の腐食診断方法。
- 前記腐食環境において使用される金属製の機器あるいは構造物を構成している金属材料が、質量百分率でクロムを7%以上14%以下含有する鋼であることを特徴とする請求項1〜7のいずれかに記載の腐食診断方法。
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JP4447448B2 true JP4447448B2 (ja) | 2010-04-07 |
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Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4959937B2 (ja) * | 2004-12-27 | 2012-06-27 | 株式会社日立産機システム | 腐食診断部品を設けてなる配電用変圧器 |
JP5030928B2 (ja) * | 2008-12-02 | 2012-09-19 | 三菱重工業株式会社 | 屋外構造物及び屋外構造物構成部材の劣化推定方法 |
JP5030929B2 (ja) * | 2008-12-02 | 2012-09-19 | 三菱重工業株式会社 | 屋外構造物の構成部材の寿命監視方法 |
AU2009323495B2 (en) | 2008-12-02 | 2012-06-28 | Mitsubishi Heavy Industries, Ltd. | Outdoor structure and method of estimating deterioration of component member of outdoor structure |
JP4695726B2 (ja) * | 2009-04-09 | 2011-06-08 | 新日本製鐵株式会社 | 実船上甲板カーゴタンク内面の耐食性評価試験方法 |
JP5921888B2 (ja) * | 2011-01-17 | 2016-05-24 | 株式会社神戸製鋼所 | 腐食測定方法、及び腐食環境ゲージ |
JP6058154B2 (ja) * | 2013-10-31 | 2017-01-11 | 三菱電機株式会社 | 耐食性寿命診断部品、熱交換器、冷凍空調装置 |
CN114264591B (zh) * | 2021-12-23 | 2023-05-12 | 中国兵器工业第五九研究所 | 一种用于金属标准件腐蚀外观评价的装置及方法 |
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