کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7702904 | 1496861 | 2018 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The cavitation erosion of ultrasonic sonotrode during large-scale metallic casting: Experiment and simulation
ترجمه فارسی عنوان
فرسایش حفره ای سوناتروت اولتراسونیک در هنگام ریخته گری فلزات سنگین: آزمایش و شبیه سازی
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کلمات کلیدی
سوناتروت اولتراسونیک، اولتراسوند قدرت، فرسایش حفره، شبیه سازی عددی، ریخته گری در مقیاس بزرگ،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی (عمومی)
چکیده انگلیسی
Ultrasonic sonotrodes play an essential role in transmitting power ultrasound into the large-scale metallic casting. However, cavitation erosion considerably impairs the in-service performance of ultrasonic sonotrodes, leading to marginal microstructural refinement. In this work, the cavitation erosion behaviour of ultrasonic sonotrodes in large-scale castings was explored using the industry-level experiments of Al alloy cylindrical ingots (i.e. 630â¯mm in diameter and 6000â¯mm in length). When introducing power ultrasound, severe cavitation erosion was found to reproducibly occur at some specific positions on ultrasonic sonotrodes. However, there is no cavitation erosion present on the ultrasonic sonotrodes that were not driven by electric generator. Vibratory examination showed cavitation erosion depended on the vibration state of ultrasonic sonotrodes. Moreover, a finite element (FE) model was developed to simulate the evolution and distribution of acoustic pressure in 3-D solidification volume. FE simulation results confirmed that significant dynamic interaction between sonotrodes and melts only happened at some specific positions corresponding to severe cavitation erosion. This work will allow for developing more advanced ultrasonic sonotrodes with better cavitation erosion-resistance, in particular for large-scale castings, from the perspectives of ultrasonic physics and mechanical design.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics Sonochemistry - Volume 43, May 2018, Pages 29-37
Journal: Ultrasonics Sonochemistry - Volume 43, May 2018, Pages 29-37
نویسندگان
Yang Tian, Zhilin Liu, Xiaoqian Li, Lihua Zhang, Ruiqing Li, Ripeng Jiang, Fang Dong,