航空用TC16钛合金自锁螺母的研制

发布时间：2019-06-20 17:17

【摘要】：TC16钛合金自锁螺母是21世纪初在我国军用飞机上逐步应用的一种新型紧固件,TC16钛合金自锁螺母目前有厚、薄两种形式。经过10多年的研发,目前仍然存在造价高,使用过程中拧入困难、甚至锁死和螺栓拧断的问题。因此,航空行业标准HB7595-2011《使用温度不高于425°C的MJ螺纹自锁螺母通用规范》在1998版的基础上对自锁螺母的性能参数进行了调整,所以根据新的技术要求,对TC16自锁螺母进行研发具有重要意义。本文结合沈飞公司现有型号所需钛合金自锁螺母的型号规格要求,进行了两种形式12种规格的自锁螺母的研制。首先在分析TC16材料特性及内螺纹加工特点的基础上,研究了TC16钛合金自锁螺母机加工艺,确定内螺纹底孔加工尺寸,对比选择了合适的加工刀具,提升自锁螺母内螺纹加工效率。设计了自锁螺母收口工装,以试验的方法确定了自锁螺母收口尺寸。进行了TC16钛合金自锁螺母热处理技术研究,分析解决了固溶处理(真空水淬)产品转移时间在12S以内的技术问题,以及产品热处理后氧化问题。进行了HR-7201干膜润滑剂涂覆工艺技术研究,利用对比试验和分析的方法,确定了TC16钛合金自锁螺母HR-7201干膜润滑剂涂覆工艺。最后进行了TC16钛合金自锁螺母产品的鉴定实验与分析工作,实验验证了本文所研发制造的TC16钛合金自锁螺母满足了HB7595-2011标准规定的技术要求。
[Abstract]:TC16 titanium alloy self-locking nut is a new type of fastener which has been gradually used in military aircraft in China at the beginning of the 21st century. TC16 titanium alloy self-locking nut has two forms: thick and thin at present. After more than 10 years of research and development, there are still the problems of high cost, difficult to screw in the process of use, and even locking and bolt breaking. Therefore, the aviation industry standard HB7595-2011 "General Specification for MJ Thread self-locking Nuts with temperature not higher than 425 掳C" adjusts the performance parameters of self-locking nuts on the basis of version 1998, so it is of great significance to develop TC16 self-locking nuts according to the new technical requirements. According to the model specification requirements of titanium alloy self-locking nuts needed by Shenfei Company, two forms of 12 kinds of self-locking nuts are developed in this paper. Firstly, on the basis of analyzing the characteristics of TC16 material and internal thread processing, the processing technology of TC16 titanium alloy self-locking screw machine is studied, the machining size of internal thread bottom hole is determined, and the suitable machining tool is compared to improve the machining efficiency of internal thread of self-locking nut. The self-locking nut closing tool is designed, and the size of the self-locking nut is determined by the test method. The heat treatment technology of TC16 titanium alloy self-locking nut was studied, and the technical problems of solid solution treatment (vacuum water quenching) with transfer time less than 12s and oxidation after heat treatment were analyzed and solved. The coating technology of HR-7201 dry film lubricant was studied. The coating process of TC16 titanium alloy self-locking nut HR-7201 dry film lubricant was determined by means of comparative test and analysis. Finally, the identification experiment and analysis of TC16 titanium alloy self-locking nut products are carried out. the experimental results show that the TC16 titanium alloy self-locking nut developed in this paper meets the technical requirements of HB7595-2011 standard.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：V229

【相似文献】