Powder flux regulation in the Laser Material Deposition Process

被引：2

作者：

Arrizubieta, Jon Inaki ^{[1
]}

Wegener, Maximiliam ^{[2
]}

Arntz, Kristian ^{[2
]}

Lamikiz, Aitzol ^{[3
]}

Ruiz, Jose Exequiel ^{[3
]}

机构：

[1] Univ Basque Country UPV EHU, Donostia San Sebastian, Gipuzkoa, Spain

[2] Fraunhofer Inst Prod Technol IPT, Aachen, Germany

[3] Univ Basque Country UPV EHU, Donostia San Sebastian, Gipuzkoa, Spain

来源：

LASER ASSISTED NET SHAPE ENGINEERING 9 INTERNATIONAL CONFERENCE ON PHOTONIC TECHNOLOGIES PROCEEDINGS OF THE LANE 2016 | 2016年 / 83卷

关键词：

Laser; powder flux; regulation; solenoid valves; METAL-DEPOSITION; PARAMETERS; GEOMETRY;

D O I：

10.1016/j.phpro.2016.08.076

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 dads would present a homogeneous shape. (C) 2016 The Authors. Published by Elsevier B.V.

引用

页码：743 / 751

页数：9

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