کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11003657 | 1461590 | 2019 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Comparison of processing window in full penetration laser welding of thick high-strength steel under atmosphere and sub-atmosphere
ترجمه فارسی عنوان
مقایسه پنجره پردازش در جوشکاری کامل جوشکاری لیزر فولاد با مقاومت بالا در جو و زیر اتمسفر
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کلمات کلیدی
جوش لیزری، نفوذ کامل، پنجره پردازش اتمسفر، زیرمجموعه،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی برق و الکترونیک
چکیده انگلیسی
In order to show the advantages of laser welding under vacuum or sub-atmosphere in fabrication of thick section structures, fiber laser welding of thick high-strength steel was performed under atmosphere and sub-atmosphere, respectively. The effect of ambient pressure on penetration depth and cross section was investigated, and the processing window in full penetration welding of 10â¯mm thick high-strength steel under atmosphere and sub-atmosphere was compared. The results showed that the processing window of full penetration laser welding under atmosphere (101â¯kPa) was very narrow because of the appearances of various weld defects. Full penetration sound welds could only be achieved in a small processing window near the parameter of 10â¯kW laser power and 1.5â¯m/min welding speed. It was found that there was a sharp increase in penetration depth and a significant change of cross section from “nail-head” shape to parallel shape with a decrease in ambient pressure. Full penetration welds joint under sub-atmosphere (0.1â¯kPa) displayed high weld quality with extreme smooth surface appearances. The processing window under sub-atmosphere with laser power ranging from 4â¯kW to 6â¯kW and welding speed ranging from 0.5â¯m/min to 1.5â¯m/min was much wider than that under atmosphere.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics & Laser Technology - Volume 109, January 2019, Pages 449-455
Journal: Optics & Laser Technology - Volume 109, January 2019, Pages 449-455
نویسندگان
Meng Jiang, Wang Tao, Yanbin Chen, Fukang Li,