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    L80-13Cr特殊螺紋加厚油管的研發(fā)

    Research and Development of L80-13Cr Upset Tubing with Premium Threads

    • 摘要: 介紹了L80-13Cr特殊螺紋加厚油管的研發(fā)試制情況。通過(guò)分析L80-13Cr鋼的變形特點(diǎn)并結(jié)合實(shí)際的生產(chǎn)經(jīng)驗(yàn)，確定了管端加厚工藝；通過(guò)分析L80-13Cr鋼的力學(xué)性能特性，設(shè)定了奧氏體化溫度為980℃、加熱后在空氣中自然冷卻至50℃以下的熱處理方案。試驗(yàn)結(jié)果表明：L80-13Cr特殊螺紋加厚油管的加厚端尺寸和顯微組織均滿足設(shè)計(jì)要求，管體和管端的力學(xué)性能均勻；拉伸性能、沖擊韌性和硬度均滿足API Spec 5CT—2011規(guī)范的要求。

       

      Abstract: Described here are the activities associated with the R& D and trial manufacture of the L80-13Cr upset tubing with premium threads.Based on the analysis of the deformation characteristics of the L80-13Cr steel, and relevant actual production experience, the end upsetting process for the said tubing is determined.And based on analysis of the mechanical property characteristics of the L80-13Cr steel, the heat treatment process for the pipe is set up.which involving setting the austenization temperature as 980℃, and air-cooling the pipe down to 50℃ below. The testing results demonstrates that the upset end dimensions and microstructure of the L80-13Cr upset tubing with premium threads are up to the design requirements, and its body and end mechanical properties are uniform, while its tensile property, impact toughness and hardness are all in compliance with the requirements as specified under API Spec 5CT-2011.

       

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