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在石油钻井中,滑动轴承牙轮钻头的应用日益增多,但轴承的工作环境却相当恶劣。为了提高钻头滑动轴承的工作寿命,并为这类轴承的设计提供科学依据,针对其实际应用工况,特殊设计制造了一种IPG-2型滑动轴承试验台,并且利用其在30kN、40kN和50kN的3种载荷条件下,对牙轮钻头镶嵌铜合金的滑动轴承进行了台架试验研究,着重考察了铜合金镶嵌区尺寸之大小对轴承摩擦磨损性能的影响。结果表明,在相邻两个镶嵌区之间的基体区表面宽度与铜合金的镶嵌区宽度之比值分别为1、2、3和4的几种镶嵌滑动轴承中,它们的摩擦学性能依次变差,即以第一种镶嵌轴承的摩擦磨损性能最好,这是由于镶嵌材料铜合金的抗剪切强度比钢基体的低,在摩擦力的作用下容易向非镶嵌区基体表面及与之对摩部件表面发生材料转移并形成转移膜的缘故。这种研究结果可以直接应用于钻头滑动轴承的设计。
In oil drilling, the application of plain bearing roller cone bits is increasing, but the working environment of the bearing is rather poor. In order to improve the service life of the drill bit plain bearing and provide a scientific basis for the design of such bearings, an IPG-2 type sliding bearing test bench is specially designed and manufactured according to the practical application conditions thereof, and by using the test bench at 30kN, 40kN and 50kN three kinds of load conditions, the roller bit boring copper alloy bearing experiment conducted a bench test, focusing on the copper alloy inlaid zone size of the bearing friction and wear properties. The results show that in several inlaid sliding bearings with the ratio of the width of the surface of the base region between the two adjacent inlaid regions and the width of the inlaid region of the copper alloy being 1, 2, 3 and 4, respectively, their tribological properties change in turn The difference is that the friction wear performance of the first kind of inlay bearing is the best because the shear strength of the copper alloy inlaid material is lower than that of the steel substrate and is easily applied to the surface of the non- The friction member surface material transfer and the formation of the transfer film sake. The results of this study can be directly applied to the design of drill bit plain bearings.