کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1873690 | 1039860 | 2011 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Continuous Wave Laser Welding of Copper with Combined Beams at Wavelengths of 1030 nm and of 515 nm
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
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چکیده انگلیسی
The low absorptivity of ∼1 μm laser *beam sources in copper materials is a major challenge. Deep penetration welding at ∼1 μm is only possible with brilliant lasers providing high power and small focus diameters. The absorptivity increases with shorter wavelengths and higher temperature of the surface of the specimen. To exploit these facts, a 1 μm and a frequency doubled thindisk laser were combined. The precursory green laser beam is used to heat up the surface. Under these conditions the IR-beam interacts with the preheated material which leads to an enhanced absorptivity and a lower threshold for deep-penetration welding.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Procedia - Volume 12, Part A, 2011, Pages 88-94
Journal: Physics Procedia - Volume 12, Part A, 2011, Pages 88-94