Resistance measurements for control of laser metal wire deposition
Journal article, 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

Author

Petter Hagqvist

University West

Almir Heralic

University West

Anna-Karin Christiansson

University West

Bengt Lennartson

Chalmers, Signals and Systems, Systems and control, Automation

Optics and Lasers in Engineering

0143-8166 (ISSN)

Vol. 54 62-67

Subject Categories

Atom and Molecular Physics and Optics

DOI

10.1016/j.optlaseng.2013.10.010

More information

Latest update

4/18/2018