共查询到17条相似文献,搜索用时 125 毫秒
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织物自润滑关节轴承游隙变化直接反映自润滑衬垫的磨损状态,确立轴承游隙和衬垫磨损量的对应关系,对掌握轴承磨损状态、判断轴承服役寿命具有重要意义。通过建立轴向游隙与衬垫磨损量关系的计算公式,结合典型轴承SA16的参数测定试验,评价了计算公式的合理性。结果表明:当轴向游隙为0.25 mm时,极端条件下的衬垫磨损量大于衬垫弹性状态下的数值。该研究可作为自润滑关节轴承的磨损失效判据的确定提供了理论参考。 相似文献
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磷酸酯偶联剂改性衬垫对自润滑关节轴承性能的影响 总被引:2,自引:0,他引:2
利用 Instron5944型电子万能材料试验机和自制的关节轴承摩擦磨损试验机,研究磷酸酯偶联剂接枝改性处理衬垫对自润滑关节轴承黏接性能和摩擦磨损性能的影响。结果表明:磷酸酯偶联剂接枝改性处理衬垫可以有效提高轴承衬垫的黏接性能;自润滑关节轴承的摩擦磨损性能与摆动频率呈现明显的相关性,摩擦因数和磨损量均随摆动频率的增大而减小,而摩擦温度随之升高;衬垫经改性处理的轴承摩擦因数、磨损量以及摩擦温升均明显降低,表明衬垫经改性处理后改善了自润滑关节轴承的摩擦学性能。 相似文献
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由于芳纶材料的苯基团极难溶于大多数化学物质,由聚四氟乙烯(PTFE)纤维和芳纶纤维复合编织而成的自润滑衬垫与黏接剂的黏接性能较差,从而影响轴承的整体性能。对关节轴承自润滑衬垫进行甘油醚接枝改性处理,利用摩擦学动态性能试验机测定衬垫改性处理后的轴承的摩擦学性能,并分析衬垫改性处理影响轴承摩擦学性能的机制。结果表明:衬垫经改性处理后轴承的磨损量、摩擦因数和摩擦温升均明显降低;经接枝改性处理后,衬垫的成膜性能得到明显改善,且随着摆动频率的提高,衬垫的成膜性能也有所提高,表明甘油醚接枝改性改善了自润滑关节轴承的摩擦学性能。 相似文献
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For self-lubricating spherical plain bearings, poor interface bonding strength between the polytetrafluoroethylene (PTFE)/aramid fabric hybrid woven liners and the outer rings can influence the full play of tribological performance of the self-lubricating liner. To solve this problem, the liners were modified by ultrasonic treatment. The adhesive performances of the modified and unmodified liners and the tribological performance of the self-lubricating radial spherical plain bearings with two kinds of liners were tested and compared. Results show that ultrasonic modification can improve the bonding performance of the liners significantly; compared to unmodified liners, the modified liners can decrease the friction coefficient, wear loss, and friction temperature of the bearings, which shows that ultrasonic modification can improve the tribological performance of self-lubricating spherical plain bearings. Bearings with modified liners only produced slight adhesive wear, but bearings with unmodified liners produced moderate adhesive wear and slight abrasive wear during test procedures. 相似文献
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关节轴承磨损性能试验研究进展 总被引:1,自引:0,他引:1
总结了关节轴承的磨损性能试验以及摩擦磨损试验机的研究进展。影响关节轴承摩擦磨损性能的主要因素为载荷、摆频、摆动角度、温度、轴承材料和自润滑材料材质及含量,并根据已有的研究工作对将来试验机的发展趋势提出了一些看法。 相似文献
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PTFE/aramid woven fabric liners were modified by ultrasonic. With self-made wear tester, tribological properties of the self-lubricating radial spherical plain bearings with modified and unmodified liners over swivel times were investigated. With scanning electron microscope and energy disperse spectroscopy, the film-forming mechanisms were analyzed. Results show: ultrasonic modification can improve tribological performances of the liners. Through ultrasonic modification, continuous and stable PTFE transfer films which had better wear resistance formed in a shorter time. Bearings with modified liners occurred slight adhesive wear, while the bearings with unmodified liners occurred serious adhesive wear and abrasive wear during the test process. 相似文献