Resistance measurements for control of laser metal wire deposition
Artikel i vetenskaplig tidskrift, 2014

A method for controlling robotized laser metal wire deposition on-line by electrical resistance metering is proposed. The concept of measuring the combined resistance of the wire and the weld pool is introduced and evaluated for automatic control purposes. Droplet formation, detachment of the wire from the weld pool and stubbing can be hard to avoid during processing due to the sensitive process and short reaction times needed for making on-line adjustments. The implemented system shows a possible route for automatic control of the process wherein such problems can be avoided automatically. The method proves to successfully adjust the distance between the tool and the workpiece through controlling the robot height position, thus increasing stability of the laser metal wire deposition process. (C) 2013 Elsevier Ltd. All rights reserved.

Automatic control

POWDER

Resistance

Laser metal wire deposition

SUPERALLOY

manufacturing

Additive

DIODE-LASER

Författare

Petter Hagqvist

Högskolan Väst

Almir Heralic

Högskolan Väst

Anna-Karin Christiansson

Högskolan Väst

Bengt Lennartson

Chalmers, Signaler och system, System- och reglerteknik, Automation

Optics and Lasers in Engineering

0143-8166 (ISSN)

Vol. 54 62-67

Ämneskategorier

Atom- och molekylfysik och optik

DOI

10.1016/j.optlaseng.2013.10.010

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Senast uppdaterat

2018-04-18