共查询到17条相似文献,搜索用时 78 毫秒
1.
根据实际生产中出现的圆柱滚子轴承用金属实体保持架锁口镇量的质量问题,文中对锁点位置的确定、保持架镀银前锁量计算、保持架镀银后锁量的变化进行了分析,并推导出新的销量设计计算方法。附图3幅,表4个。 相似文献
2.
试验研究镀银膜轴承在干摩擦、润滑油和润滑脂复合润滑下的摩擦性能。试验结果显示:在中低转速下,镀银膜轴承在银膜和液体润滑剂(油和脂)复合润滑下的摩擦因数仅相当于银膜干摩擦下摩擦因数的10%左右,且变化平稳;在高转速下,试验轴承在银膜和液体润滑剂复合润滑下的摩擦因数随转速增加而增加,且银膜与润滑脂复合润滑条件下的摩擦因数随转速增加得更快,但仍小于银膜干摩擦下的摩擦因数;镀银膜轴承在银膜和液体润滑剂(油和脂)的复合润滑下的磨损小于银膜干摩擦时的磨损;中低转速下,镀银膜轴承在液体润滑剂(油和脂)复合润滑下的摩擦磨损性能远优于银膜干摩擦时的摩擦磨损性能。 相似文献
3.
4.
分析硅青铜(QSi1-3)保持架镀银的优点和技术难点,详细介绍了硅青铜保持架的镀银工艺流程和技术参数,并对保持架镀银后的表面质量、镀银层厚度和结合力进行了检测分析,确保了镀银质量满足工艺要求。 相似文献
5.
航空发动机主轴轴承失效模式分析 总被引:2,自引:0,他引:2
航空发动机圆柱滚子主轴承常常因为工作条件恶劣,发生失效。采用光学显微镜、扫描电镜、能谱仪、X射线光电子能谱等对服役后的圆柱滚子轴承进行失效分析。结果表明:根据失效机制与微观形貌对失效模式,可以将圆柱滚子轴承的失效模式分为8种不同的失效模式,包括划伤和擦伤、打滑蹭伤、压坑凹坑、疲劳剥落、振纹、受热变色、内圈烧伤、保持架镀银层磨损。对打滑蹭伤、烧伤和保持架镀银层磨损等失效模式的轴承进行分析,结果表明:在打滑蹭伤的轴承表面发现O元素,表明打滑蹭伤过程中发生了氧化磨损;在烧伤轴承表面发现了Fe的氧化物FeO和Fe2O3,表明轴承在烧伤时温度较高,润滑油膜被破坏,滚子和内圈互相接触发生剧烈磨损;保持架表面银层脱落,部分磨损区域露出铜表面,表明保持架在服役过程中发生了摩擦磨损。 相似文献
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
为了评估银盘水电站推力轴承支撑性能对机组运行的稳定性以及验证镜板泵外循环技术在设计工况下的冷却效果,通过对不同结构特点推力轴承支撑性能进行分析,阐述了银盘水电站推力轴承弹性油箱支撑结构在轴流转桨式水轮发电机组中自动调整各轴瓦受力平衡的优点;同时,利用流体力学计算公式,对银盘水电站镜板泵外循环系统工作压头和流量进行了计算分析,结合现场机组运行工况进行了试验验证。研究结果表明:采用弹性油箱支撑结构的推力轴承,能使推力轴承轴瓦间受力不均匀的问题得到根本改善,大大提高了机组运行的稳定性;通过计算分析,结合机组运行监测数据,得出了银盘水电站镜板泵实际压头系数和流量系数,证明镜板泵外循环系统能够在设计工况点附近工作,从检测数据来看系统冷却效果较好。 相似文献
16.
Yang Zhang Hans N. Hansen Arnaud De Grave Peter T. Tang Jacob S. Nielsen 《The International Journal of Advanced Manufacturing Technology》2011,55(5-8):573-580
Laser induced selective activation (LISA) is a molded interconnected devices technique for selective metallization of polymers. On the working piece, only the laser-machined area can be metalized in the subsequent plating. The principle of the technology is introduced. Surface analysis was performed on the laser-machined polymer using an Alicona InfiniteFocus? microscope. Based on previous experiments, bearing area curve and its parameters are chosen to characterize the surface. In this paper, by comparison of plateable and non-plateable surfaces, and two types of plateable surface made by different lasers, it is found that the normalized bearing area curve is an effective method to characterize porous surface for the subsequent plating. The normalized parameters are available to make a quantitative analysis. 相似文献
17.
A new technological application of the ion plating technique to the prevention of fretting has been studied. Ion plating was done using gold and silver, which are commonly employed as thin metal film lubricants and also boron carbide which has extremely good wear resistance. The anti-fretting property of the ion plated film was always superior to that of the sputtered or vacuum evaporated film. The ion plated boron carbide film showed the best resistance to fretting. The better adhesion of ion plated films was responsible for the better anti-wear property. Transmission electron microscopy was used to study ion plated films. 相似文献