کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10674583 | 1010322 | 2007 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Self-Sharpening of Thin Tungsten Electrode in Single, High-Current Discharge: Its Dynamics and Mechanism
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Self-Sharpening of Thin Tungsten Electrode in Single, High-Current Discharge: Its Dynamics and Mechanism Self-Sharpening of Thin Tungsten Electrode in Single, High-Current Discharge: Its Dynamics and Mechanism](/preview/png/10674583.png)
چکیده انگلیسی
Self-sharpening of a thin tungsten electrode occurs in single, high-current discharge. This phenomenon has been observed with a custom-made, high-speed imaging system. The system allowed us to take one hundred images of the electrode shape during and after the discharge with 16 μs intervals. The following selfs-harpening mechanism has been proposed based on observations: (1) During the discharge, when the melt front descends towards the axis of the electrode, while the melt forms a sphere and moves along it due to the surface tension. (2) The melt continues moving even after the discharge, revealing a needle-shaped unmelted part and then solidifies. Detailed studies of discharge conditions to the diameter of the needle-shape formed by the process have been carried out. Results supporting the proposed mechanism are obtained.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: CIRP Annals - Volume 56, Issue 1, 2007, Pages 229-232
Journal: CIRP Annals - Volume 56, Issue 1, 2007, Pages 229-232
نویسندگان
Yoshiro Ito, Rie Tanabe, Naotake Mohri,