کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5497408 1530941 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Powder Flux Regulation in the Laser Material Deposition Process
ترجمه فارسی عنوان
تنظیم شار پودر در فرایند رسوب مواد لیزر
کلمات کلیدی
لیزر، شار پودر مقررات، دریچه های الکترومغناطیسی،
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
چکیده انگلیسی
In the present research work a powder flux regulation system has been designed, developed and validated with the aim of improving the Laser Material Deposition (LMD) process. In this process, the amount of deposited material per substrate surface unit area depends on the real feed rate of the nozzle. Therefore, a regulation system based on a solenoid valve has been installed at the nozzle entrance in order to control the powder flux. The powder flux control has been performed based on the machine real feed rate, which is compared with the programmed feed rate. An instantaneous velocity error is calculated and the powder flow is controlled as a function of this variation using Pulse Width Modulation (PWM) signals. Thereby, in zones where the Laser Material Deposition machine reduces the feed rate due to a trajectory change, powder accumulation can be avoided and the generated clads would present a homogeneous shape.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Procedia - Volume 83, 2016, Pages 743-751
نویسندگان
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