Laser cladding with scanning optics

Effect of scanning frequency and laser beam power density on cladding process

J Pekkarinen (Corresponding Author), A Salminen, Veli Kujanpää

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Abstract

Scanning optics is an effective way to manipulate a laser beam for laser cladding. The numerical adjustment of the scanner gives a great deal of flexibility to the cladding process. However, the effect of the scanned beam on the cladding process itself has not been studied very thoroughly so far. This study concentrates on explaining how the scanning frequency and power density of the laser beam affect the stability of the cladding process. The results showed that both of these factors significantly influence the process stability and the outcome of the cladding process. If the local specific energy input was over 2.46 J/mm2, the process was noticed to be unstable. This limit was cross when scanning frequency was under 40 Hz. Power density's limit value for stable process was found to be 191 kW/cm2 and higher power densities than this was found to produce unstable process. If the cladding process was found to be unstable, dilution increased significantly and process started to resemble more laser alloying
Original languageEnglish
Article number032002
JournalJournal of Laser Applications
Volume26
Issue number3
DOIs
Publication statusPublished - 2014
MoE publication typeA1 Journal article-refereed

Fingerprint

frequency scanning
Laser cladding
Laser beams
radiant flux density
Optics
laser beams
optics
Scanning
scanning
lasers
Alloying
Dilution
scanners
alloying
dilution
flexibility
adjusting
Lasers

Keywords

  • Cladding
  • fiber laser
  • focal position
  • melt pool behavior
  • power density
  • process stability
  • scanner
  • scanning frequency

Cite this

@article{3e190540a47848679d54326d12917dd9,
title = "Laser cladding with scanning optics: Effect of scanning frequency and laser beam power density on cladding process",
abstract = "Scanning optics is an effective way to manipulate a laser beam for laser cladding. The numerical adjustment of the scanner gives a great deal of flexibility to the cladding process. However, the effect of the scanned beam on the cladding process itself has not been studied very thoroughly so far. This study concentrates on explaining how the scanning frequency and power density of the laser beam affect the stability of the cladding process. The results showed that both of these factors significantly influence the process stability and the outcome of the cladding process. If the local specific energy input was over 2.46 J/mm2, the process was noticed to be unstable. This limit was cross when scanning frequency was under 40 Hz. Power density's limit value for stable process was found to be 191 kW/cm2 and higher power densities than this was found to produce unstable process. If the cladding process was found to be unstable, dilution increased significantly and process started to resemble more laser alloying",
keywords = "Cladding, fiber laser, focal position, melt pool behavior, power density, process stability, scanner, scanning frequency",
author = "J Pekkarinen and A Salminen and Veli Kujanp{\"a}{\"a}",
year = "2014",
doi = "10.2351/1.4868895",
language = "English",
volume = "26",
journal = "Journal of Laser Applications",
issn = "1042-346X",
number = "3",

}

Laser cladding with scanning optics : Effect of scanning frequency and laser beam power density on cladding process. / Pekkarinen, J (Corresponding Author); Salminen, A; Kujanpää, Veli.

In: Journal of Laser Applications, Vol. 26, No. 3, 032002, 2014.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Laser cladding with scanning optics

T2 - Effect of scanning frequency and laser beam power density on cladding process

AU - Pekkarinen, J

AU - Salminen, A

AU - Kujanpää, Veli

PY - 2014

Y1 - 2014

N2 - Scanning optics is an effective way to manipulate a laser beam for laser cladding. The numerical adjustment of the scanner gives a great deal of flexibility to the cladding process. However, the effect of the scanned beam on the cladding process itself has not been studied very thoroughly so far. This study concentrates on explaining how the scanning frequency and power density of the laser beam affect the stability of the cladding process. The results showed that both of these factors significantly influence the process stability and the outcome of the cladding process. If the local specific energy input was over 2.46 J/mm2, the process was noticed to be unstable. This limit was cross when scanning frequency was under 40 Hz. Power density's limit value for stable process was found to be 191 kW/cm2 and higher power densities than this was found to produce unstable process. If the cladding process was found to be unstable, dilution increased significantly and process started to resemble more laser alloying

AB - Scanning optics is an effective way to manipulate a laser beam for laser cladding. The numerical adjustment of the scanner gives a great deal of flexibility to the cladding process. However, the effect of the scanned beam on the cladding process itself has not been studied very thoroughly so far. This study concentrates on explaining how the scanning frequency and power density of the laser beam affect the stability of the cladding process. The results showed that both of these factors significantly influence the process stability and the outcome of the cladding process. If the local specific energy input was over 2.46 J/mm2, the process was noticed to be unstable. This limit was cross when scanning frequency was under 40 Hz. Power density's limit value for stable process was found to be 191 kW/cm2 and higher power densities than this was found to produce unstable process. If the cladding process was found to be unstable, dilution increased significantly and process started to resemble more laser alloying

KW - Cladding

KW - fiber laser

KW - focal position

KW - melt pool behavior

KW - power density

KW - process stability

KW - scanner

KW - scanning frequency

U2 - 10.2351/1.4868895

DO - 10.2351/1.4868895

M3 - Article

VL - 26

JO - Journal of Laser Applications

JF - Journal of Laser Applications

SN - 1042-346X

IS - 3

M1 - 032002

ER -