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张颖川, 马国栋, 代鹏, 王敬水, 金炜. 6061-T6铝合金中空薄壁型材双轴肩搅拌摩擦焊工具设计与工艺分析[J]. 焊接学报, 2022, 43(6): 88-95. DOI: 10.12073/j.hjxb.20210512001
引用本文: 张颖川, 马国栋, 代鹏, 王敬水, 金炜. 6061-T6铝合金中空薄壁型材双轴肩搅拌摩擦焊工具设计与工艺分析[J]. 焊接学报, 2022, 43(6): 88-95. DOI: 10.12073/j.hjxb.20210512001
ZHANG Yingchuan, MA Guodong, DAI Peng, WANG Jingshui, JIN Wei. Tool design and process analysis of bobbing tool friction stir welding for thin-walled extrude profile of 6061-T6 aluminum alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2022, 43(6): 88-95. DOI: 10.12073/j.hjxb.20210512001
Citation: ZHANG Yingchuan, MA Guodong, DAI Peng, WANG Jingshui, JIN Wei. Tool design and process analysis of bobbing tool friction stir welding for thin-walled extrude profile of 6061-T6 aluminum alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2022, 43(6): 88-95. DOI: 10.12073/j.hjxb.20210512001

6061-T6铝合金中空薄壁型材双轴肩搅拌摩擦焊工具设计与工艺分析

Tool design and process analysis of bobbing tool friction stir welding for thin-walled extrude profile of 6061-T6 aluminum alloy

  • 摘要: 基于双轴肩搅拌摩擦焊热输入的理论分析,建立了焊接工具结构尺寸特征值与待焊工件厚度之间的工程模型.利用该工程模型,设计并优化得到适用于厚度为2.5 mm的6061-T6铝合金薄板的双轴肩搅拌摩擦焊工具.使用该工具对中空薄壁型材进行焊接,并对焊接工艺参数进行优化. 结果表明,当焊接工具转速为1 000 r/min、焊接速度为600 mm/min时,可以得到综合力学性能最佳的焊接接头,其中正面焊缝焊接接头抗拉强度可达231 MPa,为母材抗拉强度的77%,弯曲角度达180°;反面焊缝焊接接头抗拉强度可达226 MPa,为母材抗拉强度的76%,弯曲角度达180°.

     

    Abstract: An engineering model between characteristic value of welding tool and specimen thickness was established based on heat input theoretical analysis of bobbing tool friction stir welding. According to this model, a welding tool was designed and optimized, which was used for join 2.5 mm thin-walled extrude profile of 6061-T6 aluminum alloy. Friction stir welding parameters were optimized as well. When the rotation speed of the tool was 1 000 r/min and welding speed was 600 mm/min, the joint obtained a maximum mechanical properties. The front side joint had a tensile strength of 231 MPa, 77% of the base material, and a bend angle of 180°, while the back side joint had a tensile strength of 226 MPa, 76% of the base material, and a bend angle of 180°.

     

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