Interactions between laser beam and filler metal

Antti Salminen, Veli Kujanpää, Tapani Moisio

Research output: Contribution to journalArticleScientificpeer-review

29 Citations (Scopus)

Abstract

One method to widen the scope of applications for laser beam welding (LBW) is to use filler metal for bridging a root opening or to control weld chemistry. Use of filler metal also reduces the relative investment of laser equipment by increasing the weldable material thickness with the highest output power of the laser. Research in the field of laser beam welding with filler metal has mainly concentrated on the effect of filler metal on the weld metal composition.The use of filler metal with laser beam welding changes the welding process by adding one more component to the process, a cold wire filler metal. This paper deals with the laser beam-filler metal interaction, in particular the beam reflections from the filler metal. Entry of the wire into the focused cone of the CO{sub 2} laser beam causes the reflection of the laser beam. The form and intensity of this reflection depends on the wire feed rate and the laser power. Up to 57% of the incoming laser power may be reflected. The reflection`s portion and direction are important, because it can increase heating and melting of the pool or unmelted edges, and therefore, affect suitable welding parameters. The focusing optics also have an effect on the reflection.
Original languageEnglish
Pages (from-to)9-13
Number of pages5
JournalWelding Journal
Volume75
Issue number1
Publication statusPublished - 1996
MoE publication typeA1 Journal article-refereed

Fingerprint

Filler metals
Laser beams
Laser beam welding
Lasers
Wire
Welding
Welds
Carbon Monoxide
Cones
Optics
Melting
Metals
Heating
Chemical analysis

Cite this

Salminen, A., Kujanpää, V., & Moisio, T. (1996). Interactions between laser beam and filler metal. Welding Journal, 75(1), 9-13.
Salminen, Antti ; Kujanpää, Veli ; Moisio, Tapani. / Interactions between laser beam and filler metal. In: Welding Journal. 1996 ; Vol. 75, No. 1. pp. 9-13.
@article{3f09826a7358489aafb0944c0d3d2470,
title = "Interactions between laser beam and filler metal",
abstract = "One method to widen the scope of applications for laser beam welding (LBW) is to use filler metal for bridging a root opening or to control weld chemistry. Use of filler metal also reduces the relative investment of laser equipment by increasing the weldable material thickness with the highest output power of the laser. Research in the field of laser beam welding with filler metal has mainly concentrated on the effect of filler metal on the weld metal composition.The use of filler metal with laser beam welding changes the welding process by adding one more component to the process, a cold wire filler metal. This paper deals with the laser beam-filler metal interaction, in particular the beam reflections from the filler metal. Entry of the wire into the focused cone of the CO{sub 2} laser beam causes the reflection of the laser beam. The form and intensity of this reflection depends on the wire feed rate and the laser power. Up to 57{\%} of the incoming laser power may be reflected. The reflection`s portion and direction are important, because it can increase heating and melting of the pool or unmelted edges, and therefore, affect suitable welding parameters. The focusing optics also have an effect on the reflection.",
author = "Antti Salminen and Veli Kujanp{\"a}{\"a} and Tapani Moisio",
year = "1996",
language = "English",
volume = "75",
pages = "9--13",
journal = "Welding Journal",
issn = "0043-2296",
publisher = "American Welding Society",
number = "1",

}

Salminen, A, Kujanpää, V & Moisio, T 1996, 'Interactions between laser beam and filler metal', Welding Journal, vol. 75, no. 1, pp. 9-13.

Interactions between laser beam and filler metal. / Salminen, Antti; Kujanpää, Veli; Moisio, Tapani.

In: Welding Journal, Vol. 75, No. 1, 1996, p. 9-13.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Interactions between laser beam and filler metal

AU - Salminen, Antti

AU - Kujanpää, Veli

AU - Moisio, Tapani

PY - 1996

Y1 - 1996

N2 - One method to widen the scope of applications for laser beam welding (LBW) is to use filler metal for bridging a root opening or to control weld chemistry. Use of filler metal also reduces the relative investment of laser equipment by increasing the weldable material thickness with the highest output power of the laser. Research in the field of laser beam welding with filler metal has mainly concentrated on the effect of filler metal on the weld metal composition.The use of filler metal with laser beam welding changes the welding process by adding one more component to the process, a cold wire filler metal. This paper deals with the laser beam-filler metal interaction, in particular the beam reflections from the filler metal. Entry of the wire into the focused cone of the CO{sub 2} laser beam causes the reflection of the laser beam. The form and intensity of this reflection depends on the wire feed rate and the laser power. Up to 57% of the incoming laser power may be reflected. The reflection`s portion and direction are important, because it can increase heating and melting of the pool or unmelted edges, and therefore, affect suitable welding parameters. The focusing optics also have an effect on the reflection.

AB - One method to widen the scope of applications for laser beam welding (LBW) is to use filler metal for bridging a root opening or to control weld chemistry. Use of filler metal also reduces the relative investment of laser equipment by increasing the weldable material thickness with the highest output power of the laser. Research in the field of laser beam welding with filler metal has mainly concentrated on the effect of filler metal on the weld metal composition.The use of filler metal with laser beam welding changes the welding process by adding one more component to the process, a cold wire filler metal. This paper deals with the laser beam-filler metal interaction, in particular the beam reflections from the filler metal. Entry of the wire into the focused cone of the CO{sub 2} laser beam causes the reflection of the laser beam. The form and intensity of this reflection depends on the wire feed rate and the laser power. Up to 57% of the incoming laser power may be reflected. The reflection`s portion and direction are important, because it can increase heating and melting of the pool or unmelted edges, and therefore, affect suitable welding parameters. The focusing optics also have an effect on the reflection.

M3 - Article

VL - 75

SP - 9

EP - 13

JO - Welding Journal

JF - Welding Journal

SN - 0043-2296

IS - 1

ER -

Salminen A, Kujanpää V, Moisio T. Interactions between laser beam and filler metal. Welding Journal. 1996;75(1):9-13.