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<p>Laser welding technology is one of the new methods in manufacturing and producing equipment. A key aspect of this welding process is assessing joint strength, which requires examining the parameters that influence it. Therefore, the effect of peak power, pulse duration, and laser frequency parameters on the welding strength of laser points is studied. In this study, a thin sheet of 316 stainless steel with a thickness of 0.7&#xa0;mm was spot-welded by laser welding. The welding machine used in this study is a pulsed Nd: YAG laser. Laser frequency at three levels of 5, 7, and 9&#xa0;Hz, power peak at three levels of 1670, 1750, and 1800 watts, and pulse duration at three levels of 6, 8, and 10 milliseconds are studied as input parameters and test levels. The Taguchi L9 method was used to design the experiment. The results of the tensile test show that increasing the duration of the pulse and the frequency of the laser increases the strength, and increasing the power of the laser first increases the strength and then decreases the strength.</p>

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RETRACTED ARTICLE: Investigation of laser factors influence on strength of laser spot welding of 316 stainless steel using the designing experiments method

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年7月1日

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  • Mohammadreza Hadavi,
  • Hosein Rostami,
  • Saeid Nickabadi,
  • Elyas Rostami,
  • Heidar Moradalian

摘要

Laser welding technology is one of the new methods in manufacturing and producing equipment. A key aspect of this welding process is assessing joint strength, which requires examining the parameters that influence it. Therefore, the effect of peak power, pulse duration, and laser frequency parameters on the welding strength of laser points is studied. In this study, a thin sheet of 316 stainless steel with a thickness of 0.7 mm was spot-welded by laser welding. The welding machine used in this study is a pulsed Nd: YAG laser. Laser frequency at three levels of 5, 7, and 9 Hz, power peak at three levels of 1670, 1750, and 1800 watts, and pulse duration at three levels of 6, 8, and 10 milliseconds are studied as input parameters and test levels. The Taguchi L9 method was used to design the experiment. The results of the tensile test show that increasing the duration of the pulse and the frequency of the laser increases the strength, and increasing the power of the laser first increases the strength and then decreases the strength.