【摘要】：TC16鈦合金自鎖螺母是21世紀(jì)初在我國軍用飛機(jī)上逐步應(yīng)用的一種新型緊固件,TC16鈦合金自鎖螺母目前有厚、薄兩種形式。經(jīng)過10多年的研發(fā),目前仍然存在造價(jià)高,使用過程中擰入困難、甚至鎖死和螺栓擰斷的問題。因此,航空行業(yè)標(biāo)準(zhǔn)HB7595-2011《使用溫度不高于425°C的MJ螺紋自鎖螺母通用規(guī)范》在1998版的基礎(chǔ)上對(duì)自鎖螺母的性能參數(shù)進(jìn)行了調(diào)整,所以根據(jù)新的技術(shù)要求,對(duì)TC16自鎖螺母進(jìn)行研發(fā)具有重要意義。本文結(jié)合沈飛公司現(xiàn)有型號(hào)所需鈦合金自鎖螺母的型號(hào)規(guī)格要求,進(jìn)行了兩種形式12種規(guī)格的自鎖螺母的研制。首先在分析TC16材料特性及內(nèi)螺紋加工特點(diǎn)的基礎(chǔ)上,研究了TC16鈦合金自鎖螺母機(jī)加工藝,確定內(nèi)螺紋底孔加工尺寸,對(duì)比選擇了合適的加工刀具,提升自鎖螺母內(nèi)螺紋加工效率。設(shè)計(jì)了自鎖螺母收口工裝,以試驗(yàn)的方法確定了自鎖螺母收口尺寸。進(jìn)行了TC16鈦合金自鎖螺母熱處理技術(shù)研究,分析解決了固溶處理(真空水淬)產(chǎn)品轉(zhuǎn)移時(shí)間在12S以內(nèi)的技術(shù)問題,以及產(chǎn)品熱處理后氧化問題。進(jìn)行了HR-7201干膜潤滑劑涂覆工藝技術(shù)研究,利用對(duì)比試驗(yàn)和分析的方法,確定了TC16鈦合金自鎖螺母HR-7201干膜潤滑劑涂覆工藝。最后進(jìn)行了TC16鈦合金自鎖螺母產(chǎn)品的鑒定實(shí)驗(yàn)與分析工作,實(shí)驗(yàn)驗(yàn)證了本文所研發(fā)制造的TC16鈦合金自鎖螺母滿足了HB7595-2011標(biāo)準(zhǔn)規(guī)定的技術(shù)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 擄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.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：V229

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