JP6174485B2 - 水素脆化に対する耐性を示す高い機械的特性を有する鋼で作製された異形線 - Google Patents
水素脆化に対する耐性を示す高い機械的特性を有する鋼で作製された異形線 Download PDFInfo
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Description
−酸性H2Sで飽和した海水における水素誘起割れ(HIC)に関してはNACE規格TM0284;
−酸性環境における硫化物応力腐食割れ(SSCC)に関してはNACE規格TM0177。異形線は、本明細書において検討している用途では、今日、確実に、ますます困難な動作条件(著しい深さ)に対処しなければならない;
−酸性環境における応力試験に基づいたHICおよびSSCC挙動の評価に関してはAPI規格17J(アンボンドの可撓性パイプに関する規格)
の対象である。
0.75≦C%≦0.95および
0.30≦Mn%≦0.85、
かつCr≦0.4%、V≦0.16%、Si≦1.40%および好ましくは≧0.15%;
および場合により、Alは0.06%以下、Niは0.1%以下、およびCuは0.1%以下であることを特徴とし、
5から30mmの直径を有するように900℃超でそのオーステナイト領域で熱間圧延され室温まで冷却された線材から出発し、第1に、前記出発線材を2つの連続して順番に行われるフェーズによる熱機械的処理、すなわち、線材に均一なパーライト微細構造を付与する等温焼戻し(古典的には、鉛パテンチング)と、その後の、その最終的形状を与えるための、50と最大で80%の間に含まれる(可能であれば、好ましくは約60%)全体的な加工硬化率での冷間の機械的変態操作(伸線または伸線+圧延)を施すことにより得られることを特徴とし、次いで、作製元の鋼のAc1温度より低い温度(好ましくは410から710℃)で短期間(好ましくは1分未満)の回復熱処理を施され、所望の最終的な機械的特性が付与されることを特徴とする、海洋油田掘削セクターにおける可撓性のチューブ部品としての使用を意図した、高い機械的性質を有し、水素脆化に対する耐性を示す、低合金炭素鋼で作製された異形線に関する。
−このグレードは、その後室温まで冷却される熱間圧延線材から製造される(すなわち、熱間圧延段階で存在しているオーステナイトから受け継いだ通常のフェライト−パーライト構造を有する。)が、その直径(5と30mmの間)は、通常の手段と比較して低減している。この特色は、容易な機械的成形操作による、すなわち、それを通して不均一な区画が生じ得る有意な加工硬化なしでの、すぐ使用できる異形線へのその最終的変態を可能にするが、この製造プロセスを担当している作業者は、操作パラメーターを調整して(操作パラメーターの調整、絞りプレートおよびロールの溝の選択)、該線内の局所的な加工硬化を制限しなければならないことに留意されたい。
Claims (4)
- 海洋油田掘削セクターにおける可撓性のチューブ部品としての使用を意図した、高い機械的性質を有し、水素脆化に対する耐性を示す、低合金炭素鋼で作製された異形線の製造方法であって、
総重量の重量パーセントで示す以下の化学組成を有し、
0.75%≦C≦0.95%
0.30%≦Mn≦0.85%
0%≦Cr≦0.4%
0%≦V≦0.16%
0%≦Si≦1.40%
残部は鉄および不可避不純物であり、当該方法は、
5から30mmの直径を有するように900℃超でそのオーステナイト領域で熱間圧延され室温まで冷却された線材から出発して、前記線材を2つの連続して順番に行われるフェーズによる熱機械的処理、すなわち、線材に均一なパーライト微細構造を付与する等温焼戻しと、その後の、その最終的形状を与えるための、50と最大で80%の間に含まれる全体的な加工硬化率での冷間の機械的変態操作を施して異形線を得、次いで、得られた異形線に410から710℃の温度で1分以下の期間熱処理を施して、所望の最終的な機械的特性が付与される異形線を得ることを含んで成る、方法。 - 前記異形線の化学組成中、0.15≦Si≦1.40%であることを特徴とする、請求項1に記載の方法。
- 前記異形線の化学組成が、0%≦Al≦0.06%、0%≦Ni≦0.1%、および0%≦Cu≦0.1%を含有していることを特徴とする、請求項1または2に記載の方法。
- 前記等温焼戻しが鉛パテンチング操作であることを特徴とする、請求項1〜3のいずれかに記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1002286 | 2010-05-31 | ||
FR1002286A FR2960556B3 (fr) | 2010-05-31 | 2010-05-31 | Fil de forme en acier a hautes caracteristiques mecaniques resistant a la fragilisation par l'hydrogene |
PCT/FR2011/000167 WO2011151532A1 (fr) | 2010-05-31 | 2011-03-23 | Fil de forme en acier à hautes caractéristiques mécaniques résistant à la fragilisation par l'hydrogène |
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JP2013534966A JP2013534966A (ja) | 2013-09-09 |
JP6174485B2 true JP6174485B2 (ja) | 2017-08-02 |
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JP2013512959A Active JP6174485B2 (ja) | 2010-05-31 | 2011-03-23 | 水素脆化に対する耐性を示す高い機械的特性を有する鋼で作製された異形線 |
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EP (3) | EP3527677B1 (ja) |
JP (1) | JP6174485B2 (ja) |
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CN (2) | CN105714198B (ja) |
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PL (2) | PL2576849T3 (ja) |
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KR20110075319A (ko) * | 2009-12-28 | 2011-07-06 | 주식회사 포스코 | 지연파괴 저항성이 우수한 초고강도 선재 및 그 제조방법 |
WO2015097349A1 (fr) * | 2013-12-24 | 2015-07-02 | Arcelormittal Wire France | Fil laminé à froid en acier à haute résistance à la fatigue et à la fragilisation par l'hydrogène et renfort de conduites flexibles l'incorporant |
HUE045545T2 (hu) | 2015-01-30 | 2019-12-30 | Bekaert Sa Nv | Nagyszilárdságú szálacél |
PL228818B1 (pl) * | 2015-04-14 | 2018-05-30 | Mejer-Nowakowska Magdalena M.S. Steel Spółka Cywilna | Sposób wyżarzania drutu |
BR112018015250A2 (ja) | 2016-03-07 | 2018-12-18 | Nippon Steel & Sumitomo Metal Corporation | A high intensity common steel wire excellent in waterproof matter induction crack nature |
KR101889178B1 (ko) * | 2016-12-16 | 2018-08-16 | 주식회사 포스코 | 고탄소 고강도 선재 및 이의 제조방법 |
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