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    X80鋼級(jí)樁腿支撐管的性能研究

    Study on Performances of X80 Pile Column-supporting Pipe

    • 摘要: 結(jié)合JU2000E鉆井平臺(tái)樁腿支撐管的使用環(huán)境，對(duì)國(guó)內(nèi)某公司生產(chǎn)的X80鋼級(jí)樁腿支撐管的金相組織、低溫韌性、疲勞性能、抗氫脆、防撞性能、高溫強(qiáng)度、焊接性等進(jìn)行了研究。分析結(jié)果表明：該樁腿支撐管組織均勻，韌脆轉(zhuǎn)變溫度低于-80℃；焊接性能優(yōu)良；疲勞極限比達(dá)到0.54，疲勞性能優(yōu)異；氫脆指數(shù)≤60%，氫脆傾向較低，在拉伸應(yīng)變速率為0.002～5 s-1，斷后伸長(zhǎng)率∧16%，防撞性能良好；600℃溫度下強(qiáng)度系數(shù)為0.70，耐火性能優(yōu)異。

       

      Abstract: Based on the service conditions of the pipe for supporting the JU2000E drilling platform pile column, performances of the X80 pile column-supporting pipe as produced by a certain domestic company are studied, including metallographic structure, low temperature toughness, fatigue behavior, hydrogen brittleness-resistance, hitting-resistance, high temperature strength and weldability, etc.The analysis result reveals that the said supporting pipe is in possession of such advantages as homogeneous microstructure, ductile-brittle transition temperature as below-80℃, fine weldability, fatigue limit ratio as up to 0.54, excellent fatigue behavior, hydrogen brittleness factor ≤ 60%, low hydrogen brittleness tendency, tensile strain rate as 0.002~5 s-1, percentage elongation after fractare >16%, good hitting-resistance, 600℃ strength factor as up to 0.70, and satisfactory fire resistance.

       

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