表面预处理和润滑条件对硫氮共渗35CrMo磨损性能的影响
发布时间：2018-07-20 14:54
【摘要】：目的提高35CrMo钻杆接头和对磨套管的耐磨性能。方法采用超声表面加工处理和硫氮共渗处理技术对钻杆接头常用的35CrMo钢进行处理,研究了超声表面预处理和润滑条件对其耐磨性能的影响。利用光学三维形貌仪、扫描电子显微镜(SEM)、能谱仪(EDS)和X射线衍射仪(XRD)分别研究了试样的表面形貌、粗糙度、成分和相结构,采用环块磨损试验机在油基钻井液润滑和无钻井液润滑的条件下,考察了经过不同载荷超声表面加工预处理的35CrMo钻杆接头及其对磨套管的磨损性能。结果超声表面加工预处理可使35CrMo钢及其硫氮共渗处理后的表面粗糙度显著降低约80%以上。经超声表面加工预处理后,35CrMo钢硫氮共渗钻杆接头在油基钻井液润滑和干摩擦条件下的磨损率均进一步降低。在无钻井液润滑的条件下,500 N载荷超声表面加工预处理后,硫氮共渗35CrMo钢钻杆接头对磨油管磨损表面形貌的改善更显著,表面粘着和犁沟均减少。结论 35CrMo钢钻杆接头在硫氮共渗前采用超声表面加工进行预处理,可以获得更低的表面粗糙度和更高的表面硬度,在有无钻井液润滑条件下均可提高钻杆接头和套管的耐磨性能。
[Abstract]:Objective to improve the wear resistance of 35CrMo drill pipe joint and casing. Methods 35CrMo steel, which is commonly used in drill pipe joint, was treated by ultrasonic surface treatment and sulfur nitriding treatment. The effects of ultrasonic surface pretreatment and lubrication conditions on its wear resistance were studied. The surface morphology, roughness, composition and phase structure of the samples were studied by means of optical three-dimensional topography, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD), respectively. Under the condition of oil base drilling fluid lubrication and no drilling fluid lubrication, the 35CrMo drill pipe joint and its wear performance to the grinding casing were investigated by using ring block wear tester after ultrasonic surface processing with different loads. Results the surface roughness of 35CrMo steel and its sulfur-nitriding treatment was reduced by more than 80% after ultrasonic surface pretreatment. After pretreatment with ultrasonic surface, the wear rate of 35CrMo steel is further reduced under oil based drilling fluid lubrication and dry friction. After pre-treatment with ultrasonic surface processing under 500 N load without drilling fluid lubrication, the wear surface morphology of the abrasive tubing was improved more obviously by the joint of 35CrMo steel drill pipe, and the surface adhesion and ploughing were decreased. Conclusion the surface roughness and hardness of 35CrMo steel drill pipe joint can be obtained by ultrasonic surface processing before sulfidation. The wear resistance of drill pipe joint and casing can be improved with or without drilling fluid lubrication.
【作者单位】： 北京工商大学材料与机械工程学院;中国地质大学(北京)工程技术学院;
【分类号】：TE921;TG156.8
本文编号：2133893
[Abstract]:Objective to improve the wear resistance of 35CrMo drill pipe joint and casing. Methods 35CrMo steel, which is commonly used in drill pipe joint, was treated by ultrasonic surface treatment and sulfur nitriding treatment. The effects of ultrasonic surface pretreatment and lubrication conditions on its wear resistance were studied. The surface morphology, roughness, composition and phase structure of the samples were studied by means of optical three-dimensional topography, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD), respectively. Under the condition of oil base drilling fluid lubrication and no drilling fluid lubrication, the 35CrMo drill pipe joint and its wear performance to the grinding casing were investigated by using ring block wear tester after ultrasonic surface processing with different loads. Results the surface roughness of 35CrMo steel and its sulfur-nitriding treatment was reduced by more than 80% after ultrasonic surface pretreatment. After pretreatment with ultrasonic surface, the wear rate of 35CrMo steel is further reduced under oil based drilling fluid lubrication and dry friction. After pre-treatment with ultrasonic surface processing under 500 N load without drilling fluid lubrication, the wear surface morphology of the abrasive tubing was improved more obviously by the joint of 35CrMo steel drill pipe, and the surface adhesion and ploughing were decreased. Conclusion the surface roughness and hardness of 35CrMo steel drill pipe joint can be obtained by ultrasonic surface processing before sulfidation. The wear resistance of drill pipe joint and casing can be improved with or without drilling fluid lubrication.
【作者单位】： 北京工商大学材料与机械工程学院;中国地质大学(北京)工程技术学院;
【分类号】：TE921;TG156.8
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