کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7176197 1466705 2018 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Two-step forming for improvement of forming limit in rotary nosing with relieved die for fabrication of axisymmetric and eccentric nosed tubes
ترجمه فارسی عنوان
تشکیل دو مرحلهای برای بهبود سطح تشکیل در ناحیه چرخشی با خراشیدگی برای ساخت لوله های محور متقارن و غول پیکر
کلمات کلیدی
نیشینگ، آلومینیوم، هندسه ابزار، حال چرخش،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
چکیده انگلیسی
This paper presents application of two-step forming for improving the forming limit in rotary nosing with a relieved die. Nosing is one method which is used for reducing the diameter of a tube tip. “Two-step nosing” is composed of two stages and different dies are applied for the two stages. The die shapes are determined based on the occurrence tendency of defects in “one-step nosing”, where only one die is used through the whole process. In this research, a series of experiments and numerical analyses of one-step nosing was carried out for investigating the mechanism of the occurrence of defects. As a result, it is revealed that the occurrence of defects was highly relevant with the contact area between the die and tube. Based on the result of one-step nosing, the optimum die shapes were determined for the two stages, and then “two-step nosing” improved the forming limit 9% higher than one-step nosing under the optimum condition. Furthermore, “two-step nosing” was experimentally applied for forming eccentric nosed tubes, and its superiority was verified.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Processing Technology - Volume 262, December 2018, Pages 350-358
نویسندگان
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