Automatic in-process control of laser metal-wire deposition based on sensor feedback

International Congress on Applications of Lasers & Electro-Optics ◽

10.2351/1.5062238 ◽

2011 ◽

Author(s):

Almir Heralić ◽

Anna-Karin Christiansson

Keyword(s):

Process Control ◽

Metal Wire

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Optical in-process height measurement system for process control of laser metal-wire deposition

Precision Engineering ◽

10.1016/j.precisioneng.2019.11.007 ◽

2020 ◽

Vol 62 ◽

pp. 23-29 ◽

Cited By ~ 1

Author(s):

Shigeru Takushima ◽

Daiji Morita ◽

Nobuhiro Shinohara ◽

Hiroyuki Kawano ◽

Yasuhiro Mizutani ◽

...

Keyword(s):

Process Control ◽

Measurement System ◽

Metal Wire ◽

Height Measurement

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Analysis of the Laser Droplet Formation Process

Journal of Manufacturing Science and Engineering ◽

10.1115/1.2120780 ◽

2005 ◽

Vol 128 (1) ◽

pp. 307-314 ◽

Cited By ~ 11

Author(s):

Tadej Kokalj ◽

Jure Klemenčič ◽

Peter Mužič ◽

Igor Grabec ◽

Edvard Govekar

Keyword(s):

Process Control ◽

Process Parameters ◽

Formation Process ◽

Droplet Formation ◽

Metal Wire ◽

Experimental Results ◽

Main Process ◽

Control Parameters ◽

Alloy Wire

In this paper, a novel laser droplet formation process (LDFP) from a metal wire is investigated. The process consists of the formation of a molten pendant droplet and its detachment, which are both unstable and influenced by numerous process parameters. The goal of the investigation is to specify the main process parameters and the values that provide for stable and repeatable process. Based on theoretical and experimental consideration of LDFP, a methodology for estimation of process control parameters is proposed. Estimation of the parameters is demonstrated on examples of deposited droplets of nickel and tin-alloy wires. Experimental results on tin-alloy wire indicate that the problem of splashes on the substrate is still present, while those on nickel reveal an acceptable formation of droplets.

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