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首页> 外文期刊>Journal of Manufacturing Processes >Continuous laser welding with spatial beam oscillation of dissimilar thin sheet materials (Al-Cu and Cu-Al): Process optimization and characterization
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Continuous laser welding with spatial beam oscillation of dissimilar thin sheet materials (Al-Cu and Cu-Al): Process optimization and characterization

机译：具有不同薄片材料（Al-Cu和Cu-Al）的空间光束振荡的连续激光焊接：工艺优化和特性

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摘要

Continuous laser welding with spatial beam oscillation was investigated as a method of joining combinations of thin copper and aluminum sheets. Welding of these materials is required for manufacturing of electronic components due to their physical properties. Welding of dissimilar metals such as Al-Cu with conventional manufacturing techniques is difficult due to unavoidable formation of brittle intermetallic compounds, which reduce both the mechanical and electrical properties of the joint. The aim of this work was to understand how process parameters such as laser power, welding speed and wobbling amplitude affected the weld seam, making it possible to determine which parameters were of greatest influence on the mechanical and electrical properties of the resulting joint. Both the width and penetration of the weld seam were strongly correlated to the wobbling amplitude. The ultimate tensile strength of both configurations (Al-Cu and Cu-Al) was as high as 100 kgf with optimized process parameters. Micro-hardness tests showed an increase in hardness near the molten area. The temperatures attained during welding were approximately 40 degrees C at 10 mm from the weld seam. Low electrical contact resistance and high tensile strengths were obtained with the same parameters.
机译：研究了连续激光焊接与空间光束振荡的结合方法，作为连接薄铜片和铝片的方法。由于其物理性质，这些材料的焊接对于电子部件的制造是必需的。由于不可避免地会形成脆性的金属间化合物，这会降低接头的机械性能和电气性能，因此采用常规制造技术很难焊接异种金属（例如Al-Cu）。这项工作的目的是了解诸如激光功率，焊接速度和摆动幅度之类的工艺参数如何影响焊缝，从而有可能确定哪些参数对所得接头的机械和电气性能影响最大。焊缝的宽度和熔深都与摆动幅度密切相关。两种配置（Al-Cu和Cu-Al）的最终拉伸强度在优化的工艺参数下均高达100 kgf。显微硬度测试表明，熔融区域附近的硬度增加。距焊缝10毫米处的焊接过程中达到的温度约为40摄氏度。使用相同的参数可获得较低的电接触电阻和较高的拉伸强度。

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