| 摘要: |
| 针对搅拌摩擦焊实际过程,建立了搅拌针扎入阶段和稳定焊接阶段搅拌头的受力模型,通过与实测数据对比分析对模型进行了验证.由受力模型可知无论扎入阶段或稳定焊接阶段搅拌头的薄弱部位均为搅拌针根部,若设计不当易从搅拌针根部破坏.在此基础上,针对Ti-6Al-4V的搅拌摩擦焊,将模型用于指导搅拌头设计.结果表明,合理的搅拌头设计是实现钛合金搅拌摩擦焊的关键,在合适的焊接工艺参数下可以获得成形良好的焊缝。 |
| 关键词: 搅拌摩擦焊 搅拌头 受力模型 Ti-6Al-4V |
| DOI： |
| 分类号: |
| 基金项目:大连理工大学工业装备结构分析国家重点实验室开放基金(GZ0805);国家科技支撑计划重点基金资助项目(2006BAF04B09);哈尔滨工业大学优秀团队支持计划资助 |
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| Model of forces on pin tool and its application |
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ZHOU Li, LIU Huijie, LIU Peng
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National Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China
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| Abstract: |
| A model of forces on pin tool in the plunge stage and the steady welding stage during the friction stir welding(FSW) process is established and verified by comparison with experimental data.It indicates that pin root is the weakest portion of the pin tool in either the plunge stage or the steady welding stage.Pin tool can fail from the root if improper design is adopted, so the model is applied to guide design of tools for FSW of Ti-6Al-4V.The results show that proper tool design is vital to FSW for Ti-6Al-4V.Sound welds could be obtained under appropriate parameters. |
| Key words: friction stir welding pin tool model of force Ti-6Al-4V |
