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| Study on Method for Raising Hot Riveting Qualification Rate of Titanium Alloy Rivet |
| LIU Chun, LAN Yulong, ZHAN Youhe, GOU Desen |
| ( AVIC Chengdu Aircraft Industrial (Group) Co., Ltd., Chengdu 610092, China ) |
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Abstract Aiming at the problems existing in hot riveting of titanium alloy rivets, such as insufficient forming of rivet upsetting head, surface burns of rivet upsetting head and rivet head oxidation, the main reason was found to be inaccurate control of riveting heating time and electriferous riveting process. An optimization method of hot riveting system for titanium alloy rivets was proposed. The function of heating time parametric control and automatic power cut-off before riveting was realized based on PLC. Data of rivet temperature and corresponding heating time were obtained by rivet heating test. Heating time required for rivet to reach target temperature was obtained through Newton interpolation method. A set of hot riveting process parameters for rivets of different lengths and diameters was formed. Finally, the qualified rate of hot riveting of titanium alloy rivets was greatly improved through the hot riveting test.
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| [1] |
. [J]. Aeronautical Manufacturing Technology, 2014, 57(10): 79-82. |
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2020, 
