Study on Controlling of Interface of Friction Flow Spot Welding

WANG Chao; HOU Hongliang; WANG Weibing; ZHAO Dalong; NIU Tao

doi:10.16080/j.issn1671-833x.2018.06.089

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Study on Controlling of Interface of Friction Flow Spot Welding

更新时间：2025-10-30

- Study on Controlling of Interface of Friction Flow Spot Welding
- Aeronautical Manufacturing Technology Vol. 61, Issue 6, Pages: 89-93(2018)
- 作者机构：
  
  中国航空制造技术研究院,北京,100024
- 作者简介：
- 基金信息：
- DOI：10.16080/j.issn1671-833x.2018.06.089
  CLC：
- Published：2018
- 稿件说明：
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王超，侯红亮，王卫兵，赵大龙，牛涛. 流动摩擦点焊界面质量控制研究[J]. 航空制造技术, 2018, 61(6): 89-93.

WANG Chao, HOU Hongliang, WANG Weibing, ZHAO Dalong, NIU Tao. Study on Controlling of Interface of Friction Flow Spot Welding[J]. Aeronautical Manufacturing Technology, 2018, 61(6): 89-93.
王超，侯红亮，王卫兵，赵大龙，牛涛. 流动摩擦点焊界面质量控制研究[J]. 航空制造技术, 2018, 61(6): 89-93. DOI： 10.16080/j.issn1671-833x.2018.06.089.

WANG Chao, HOU Hongliang, WANG Weibing, ZHAO Dalong, NIU Tao. Study on Controlling of Interface of Friction Flow Spot Welding[J]. Aeronautical Manufacturing Technology, 2018, 61(6): 89-93. DOI： 10.16080/j.issn1671-833x.2018.06.089.

摘要

对1mm厚6061-T6铝合金进行流动摩擦点焊试验，通过测试各种工艺条件下的焊接接头剪切性能，结合金相组织观察及断裂特征分析，研究了不同工艺参数对焊接接头焊核区、热机影响区、热影响区微观组织和剪切性能的影响。结果表明：在本次试验研究范围内，随着搅拌头焊接转速和焊接时间的增加，焊接接头的剪切性能逐渐提高；当焊接转速与焊接时间确定时，焊接接头的剪切性能随下压力的逐步增加呈现先增大后减小的趋势。当下压力F≤2300N时，“Hook”缺陷未上翘至上板顶部，焊点断裂模式为“剪切”断裂；当下压力F＞2300N时，“Hook”缺陷上翘至上板顶部，焊点断裂模式为“插入”断裂。当下压力F=2300N，搅拌头旋转速度为2000r/min，焊接时间为10s时，1mm 厚6061-T6铝合金流动摩擦点焊接头剪切性能和成型质量较好。

Abstract

The friction flow spot welding experiment has been performed on 1mm thick aluminum alloy 6061-T6.The process

microstructure and properties of welded joints were analyzed. The results show that the welded joints can be divided into four regions namely weld nugget zone

thermo-mechanical affected zone

heat affected zone and base material zone. The weld nugget zone has the tiniest grains. Down force

welding rotational speed and welding time have influences on the properties of the welded joints. In this paper

the author selects down force as the parameter for controlling the plunge depth of the tool. When down force ≤ 2300N

the hooking defeat hasn't inserted into the top surface of the upper sheet

the fracture mode acts as the “shear fracture”. When down force 2300N

the fracture mode acts as the “plug fracture”.The study shows that when choosing down force 2300N

welding rotational speed 2000r/min

welding time 10s as the welding parameter

good weld joints of 1mm thick aluminum alloy 6061-T6 can be got.

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