自润滑转筒衬垫剥落原因分析及工艺改进
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摘要
某型号起落架转筒零件粘接的自润滑衬垫在装配前出现局部剥落。为确定自润滑衬垫局部剥落的原因,对转筒的加工流程进行了梳理、分析,并对可能影响衬垫粘接性能导致剥离强度降低的环节进行试验验证。结果表明,粘接前基体清理质量;喷漆过程中有机溶剂的渗入;机械干涉等是导致衬垫剥落的主要因素,此外,也不排除综合因素作用的结果。
Local peeling of self-lubricating liner used for a certain type of landing gear rotary drum parts occurs before assembly. In order to determine the peeling reason,the processing flow of rotary drum was sorted out and analyzed. And the links that may affect the bonding performance of the liner and lead to the reduction of peeling strength were tested and verified. The result showed that the cleaning quality of the matrix before bonding,the infiltration of organic solvents in the paint spraying process and mechanical interference were the main peeling cause of the liner. In addition,results of composite factors are not excluded.
Local peeling of self-lubricating liner used for a certain type of landing gear rotary drum parts occurs before assembly. In order to determine the peeling reason,the processing flow of rotary drum was sorted out and analyzed. And the links that may affect the bonding performance of the liner and lead to the reduction of peeling strength were tested and verified. The result showed that the cleaning quality of the matrix before bonding,the infiltration of organic solvents in the paint spraying process and mechanical interference were the main peeling cause of the liner. In addition,results of composite factors are not excluded.
引文
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[2]杨育林,谷大鹏,齐效文,等.织物自润滑衬垫的研究现状与展望[J].轴承,2010(11):50-54.
[3]庄彩虹.裁切方向对PTFE织物自润滑衬垫剥离强度及摩擦磨损性能的影响[J].轴承,2017(12):35-38.
[4]李博.提高硬铬镀层气密性和耐蚀性的方法[J].电镀与精饰,2014,36(1):26-28.
[5]苏峰华,张招柱,姜葳,等.水解/接枝处理诺梅克斯纤维织物复合材料的摩擦磨损性能研究[J].摩擦学学报,2006,26(6):551-554.
[6]刘旭军,李同生,姚佳良,等.表面处理对芳纶织物粘接性能及摩擦性能的影响[J].机械工程材料,2000,24(3):38-39,42.