| 回火温度对26CrMo4s/2钢钻杆用管性能的影响 |
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| 引用本文： | 钱强,曹贵贞,刘聪,周秋芬. 回火温度对26CrMo4s/2钢钻杆用管性能的影响[J]. 钢管, 2012, 41(5): 36-39 |
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| 作者姓名： | 钱强 曹贵贞 刘聪 周秋芬 |
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| 作者单位： | 渤海石油装备制造有限公司第一机械厂,河北青县,062658 |
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| 摘 要： | 测定了26CrMo4s/2钢钻杆用管在回火温度上升时的相变点,重点研究了不同回火温度对材料的拉伸强度、夏比冲击功的影响。研究结果表明,回火温度的提高会导致强度指标下降,塑性和韧性指标上升,当回火温度超过620℃时,材料强度降幅加大;26CrMo4s/2钢热处理后可以满足ANSI/APISpec5DP—2009标准中E、X、G等3个钢级的要求;选择合适的回火温度后,冲击功达到100J以上(7.5mm×10mm,21℃)。
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| 关 键 词： | 26CrMo4s/2钢 钻杆用管 热处理 回火温度 拉伸强度 夏比冲击功 |
Influence by Tempering Temperature on Performance of 26CrMo4s/2 Drill Pipe Blank |
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| Qian Qiang , Cao Guizhen , Liu Cong , Zhou Qiufen. Influence by Tempering Temperature on Performance of 26CrMo4s/2 Drill Pipe Blank[J]. Steel Pipe, 2012, 41(5): 36-39 |
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| Authors: | Qian Qiang Cao Guizhen Liu Cong Zhou Qiufen |
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| Affiliation: | ( No.1 Machinery Works of CNPC Bohai Equipment Manufacturing Co., Ltd., Qingxian 062658, China ) |
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| Abstract: | The phase transition point of the 26CrMo4s/2 drill pipe blank is measured, when the tempering temperature is going up. The study focus is on the influence by variation of the tempering temperature on tensile strength and Charpy impact of the material. The study reveals that along with the increase of the tempering tem- perature, the strength of the material goes down, whereas its plasticity and toughness get up. And when the tempering temperature gets higher than 620 ℃, the strength of the material is getting down more obviously than before. After being heat treated properly, the 26CrMo4s/2 steel will be satisfactory to the requirements for the three steel grades, i.e., E, X and G as specified in ANSI/API Spee 5DP-2009. And after being tempered with appropriate temperature, impact value of the material will go up above 100 J（7.5 mmx10 mm, 21 ℃）. |
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| Keywords: | 26CrMo4s/2 steel Drillpipe blank Heat treatment Tempering temperature Tensile strength Charpy impact |
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