张旭,段永强,韩新德,谢唯一,王建宁,刘龙,季博卿.翻板油管锚锚片铁基合金强化层组织及耐磨性能[J].表面技术,2017,46(10):173-178.
ZHANG Xu,DUAN Yong-qiang,HAN Xin-de,XIE Wei-yi,WANG Jian-ning,LIU Long,JI Bo-qing.Microstructure and Wear Resistance of Flap Tubing Anchor Pieces with Iron-based Alloy Layer[J].Surface Technology,2017,46(10):173-178 |
| 翻板油管锚锚片铁基合金强化层组织及耐磨性能 |
| Microstructure and Wear Resistance of Flap Tubing Anchor Pieces with Iron-based Alloy Layer |
| 投稿时间：2017-05-10 修订日期：2017-10-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2017.10.025 |
| 中文关键词: 螺杆泵采油 翻板油管锚 火焰喷焊 铁基合金层 耐磨性 |
| 英文关键词:screw pumping flap tubing anchor flame spray welding Fe-based alloy layer wear resistance |
| 基金项目: |
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| Author | Institution |
| ZHANG Xu | a.Engineering Technology Research Institute, Huabei Oilfield Company, Renqiu 062552, China |
| DUAN Yong-qiang | b.Development Business Unit, Huabei Oilfield Company, Renqiu 062552, China |
| HAN Xin-de | a.Engineering Technology Research Institute, Huabei Oilfield Company, Renqiu 062552, China |
| XIE Wei-yi | a.Engineering Technology Research Institute, Huabei Oilfield Company, Renqiu 062552, China |
| WANG Jian-ning | a.Engineering Technology Research Institute, Huabei Oilfield Company, Renqiu 062552, China |
| LIU Long | a.Engineering Technology Research Institute, Huabei Oilfield Company, Renqiu 062552, China |
| JI Bo-qing | a.Engineering Technology Research Institute, Huabei Oilfield Company, Renqiu 062552, China |
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| 中文摘要: |
| 目的 提高翻板锚锚片在螺杆泵采油管柱中的耐磨性，提高采油效率，降低作业成本。方法 在45#钢基体上采用氧乙炔火焰喷焊技术制备了铁基合金涂层。利用扫描电镜、X射线衍射仪、硬度计和摩擦磨损试验机等设备，测试了涂层的硬度、微观组织形貌和耐磨性能，并与市面上翻板锚锚片刃口镶焊材料进行了摩擦系数、磨损失重等对比试验以及经济性分析。结果 铁基合金层与基体之间呈冶金结合，其组织主要由初生碳化物Cr3C2和Cr7C3，硼化物Fe2B、Cr2B和CrB，以及共晶成分的基体γ-Fe(Ni,Cr,C,Si)、α-Fe、Fe3C、(Fe,Cr)7C3、Fe23(B,C)6和Cr23C6组成。合金层表面硬度平均值为64.7HRC，比镶焊材料的表面硬度平均值高出50%左右。合金层摩擦系数稳定在0.6左右，相比镶焊材料降低了约17%。磨损失重实验后，合金层的磨损失重约为镶焊材料的2/3左右。经济性分析显示该强化工艺成本在6.8305元左右，与镶焊硬质合金材料的成本大致相当。结论 喷焊铁基合金强化层后的翻板锚锚片在硬度、耐磨性等方面得到显著提高，寿命得到有效延长。该研究为翻板锚锚片的耐磨强化与修复提供了可靠的依据，同时也为采油工艺中其他关键易磨损零部件的表面强化提供了一定的理论和实践经验。 |
| 英文摘要: |
| The work aims to increase wear resistance of flap tubing anchor pieces in screw pump tubing string, improve efficiency of oil production and reduce operation cost. An Fe-based alloy layer was prepared on 45# steel substrate by adopting flame spray welding technology. Hardness, microstructure and wear resistance of the coating were investigated by scanning electron microscope, X-ray diffractometer, hardness tester and reciprocating friction testing machine. Contrast test and economical analysis of friction coefficient and wear loss were done between cutting edge welding-on materials of flap tubing anchor pieces and the alloy layer. The Fe-based alloy layer and substrate realized metallurgical bonding. The microstructure of the alloy layer was mainly composed of primary carbides Cr2C3 and Cr7C3, borides Fe2B, Cr2B and CrB, as well as eutectic substrates γ-Fe (Ni,Cr,C,Si), α-Fe, Fe3C, (Fe,Cr)7C3, Fe23(B,C)6 and Cr23C6. Average surface hardness of the alloy layer was 64.7HRC, almost 50% higher than that of the welding-on materials. Friction coefficient of the alloy layer stayed at 0.6, nearly 17% lower than that of the welding-on materials. After wear weight loss experiment, wear weight loss of the alloy layer was about 2/3 of that of the welding-on materials. The economical analysis showed that: cost of this strengthening process was about RMB 6.8305 yuan, nearly the same as that of the welding-on materials. After welding Fe-based alloy layer, hardness and wear resistance of the flap tubing anchor pieces are increased significantly and the service life is extended effectively. This study provides a reliable basis for wear-resisting strengthening and repair of the flap tubing anchor pieces, and also theoretical and practical basis for surface strengthening of the other quick-wearing parts in the oil production technology. |
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