Correlations of melt pool geometry and process parameters during laser metal deposition by coaxial process monitoring

被引：80

作者：

Ocylok, Soern ^{[1
]}

Alexeev, Eugen ^{[1
]}

Mann, Stefan ^{[1
]}

Weisheit, Andreas ^{[1
]}

Wissenbach, Konrad ^{[1
]}

Kelbassa, Ingomar ^{[2
]}

机构：

[1] Fraunhofer Inst Laser Technol, Steinbachstr 15, D-52074 Aachen, Germany

[2] Rhein Westfal TH Aachen, Chair Laser Technol, D-52074 Aachen, Germany

来源：

8TH INTERNATIONAL CONFERENCE ON LASER ASSISTED NET SHAPE ENGINEERING (LANE 2014) | 2014年 / 56卷

关键词：

process monitoring; laser metal deposition; CLADDING PROCESS;

D O I：

10.1016/j.phpro.2014.08.167

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

One major demand of today's laser metal deposition (LMD) processes is to achieve a fail-save build-up regarding changing conditions like heat accumulations. Especially for the repair of thin parts like turbine blades is the knowledge about the correlations between melt pool behavior and process parameters like laser power, feed rate and powder mass stream indispensable. The paper will show the process layout with the camera based coaxial monitoring system and the quantitative influence of the process parameters on the melt pool geometry. Therefore the diameter, length and area of the melt pool are measured by a video analytic system at various parameters and compared with the track wide in cross-sections and the laser spot diameter. The influence of changing process conditions on the melt pool is also investigated. On the base of these results an enhanced process of the build-up of a multilayer one track fillet geometry will be presented. (C) 2014 Published by Elsevier B.V.

引用

页码：228 / 238

页数：11

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