Narrow gap hybrid welding of thick stainless steel

Tommi Jokinen; Miikka Karhu; Veli Kujanpää

doi:10.2351/1.5060047

Narrow gap hybrid welding of thick stainless steel

Tommi Jokinen, Miikka Karhu, Veli Kujanpää

Lappeenranta-Lahti University of Technology LUT

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

3 Citations (Scopus)

Abstract

Hybrid welding, in which laser and some arc welding method work together, has been introduced to be effective joining method. Hot spot, made by laser to the joint, has been reported to stabilize the arc and change the way of material transfer in arc. Hot spot is also guiding the arc towards to it. This phenomenon has been utilized in this study in order to get the process to be happened inside a very narrow groove. In this way, together with multipass technique, the thickness of the parts to be welded can be increased. Welding still happens with quite low total heat input and according to that, method can be used for joining thick sections with very low distortions. Also phenomena of laser keyhole welding still take place, so method is very effective to joining thick sections. In this study thick section austenitic stainless steel has been welded using multipass technique and hybrid process; Nd:YAG -laser + GMAW. Welding has been done using partially grooved V joint geometry and narrow gap with groove angle of 10 degrees. Parameters, for example in filler wire feeding and placement of the wire and the arc are varied. Results of experiments are presented and a phenomenon of the process is discussed.

Original language	English
Title of host publication	ICALEO 2003: 22nd International Congress on Laser Materials Processing and Laser Microfabrication
Publisher	Laser Institute of America
ISBN (Print)	978-0-912035-75-8
DOIs	https://doi.org/10.2351/1.5060047
Publication status	Published - 2003
MoE publication type	A4 Article in a conference publication
Event	22nd International Congress on Applications of Lasers and Electro-Optics, ICALEO 2003 - Jacksonville, United States Duration: 13 Oct 2003 → 16 Oct 2003

Conference

Conference	22nd International Congress on Applications of Lasers and Electro-Optics, ICALEO 2003
Country/Territory	United States
City	Jacksonville
Period	13/10/03 → 16/10/03

Keywords

hybrid welding
narrow gap
Nd:YAG-laser
laser welding

Access to Document

10.2351/1.5060047

Cite this

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title = "Narrow gap hybrid welding of thick stainless steel",

abstract = "Hybrid welding, in which laser and some arc welding method work together, has been introduced to be effective joining method. Hot spot, made by laser to the joint, has been reported to stabilize the arc and change the way of material transfer in arc. Hot spot is also guiding the arc towards to it. This phenomenon has been utilized in this study in order to get the process to be happened inside a very narrow groove. In this way, together with multipass technique, the thickness of the parts to be welded can be increased. Welding still happens with quite low total heat input and according to that, method can be used for joining thick sections with very low distortions. Also phenomena of laser keyhole welding still take place, so method is very effective to joining thick sections. In this study thick section austenitic stainless steel has been welded using multipass technique and hybrid process; Nd:YAG -laser + GMAW. Welding has been done using partially grooved V joint geometry and narrow gap with groove angle of 10 degrees. Parameters, for example in filler wire feeding and placement of the wire and the arc are varied. Results of experiments are presented and a phenomenon of the process is discussed.",

keywords = "hybrid welding, narrow gap, Nd:YAG-laser, laser welding",

author = "Tommi Jokinen and Miikka Karhu and Veli Kujanp{\"a}{\"a}",

note = "Project code: V1SU00959; 22nd International Congress on Applications of Lasers and Electro-Optics, ICALEO 2003 ; Conference date: 13-10-2003 Through 16-10-2003",

year = "2003",

doi = "10.2351/1.5060047",

language = "English",

isbn = "978-0-912035-75-8",

booktitle = "ICALEO 2003: 22nd International Congress on Laser Materials Processing and Laser Microfabrication",

publisher = "Laser Institute of America",

address = "United States",

}

Jokinen, T, Karhu, M & Kujanpää, V 2003, Narrow gap hybrid welding of thick stainless steel. in ICALEO 2003: 22nd International Congress on Laser Materials Processing and Laser Microfabrication., 309, Laser Institute of America, 22nd International Congress on Applications of Lasers and Electro-Optics, ICALEO 2003, Jacksonville, Florida, United States, 13/10/03. https://doi.org/10.2351/1.5060047

Narrow gap hybrid welding of thick stainless steel. / Jokinen, Tommi; Karhu, Miikka; Kujanpää, Veli.

ICALEO 2003: 22nd International Congress on Laser Materials Processing and Laser Microfabrication. Laser Institute of America, 2003. 309.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - Narrow gap hybrid welding of thick stainless steel

AU - Jokinen, Tommi

AU - Karhu, Miikka

AU - Kujanpää, Veli

N1 - Project code: V1SU00959

PY - 2003

Y1 - 2003

N2 - Hybrid welding, in which laser and some arc welding method work together, has been introduced to be effective joining method. Hot spot, made by laser to the joint, has been reported to stabilize the arc and change the way of material transfer in arc. Hot spot is also guiding the arc towards to it. This phenomenon has been utilized in this study in order to get the process to be happened inside a very narrow groove. In this way, together with multipass technique, the thickness of the parts to be welded can be increased. Welding still happens with quite low total heat input and according to that, method can be used for joining thick sections with very low distortions. Also phenomena of laser keyhole welding still take place, so method is very effective to joining thick sections. In this study thick section austenitic stainless steel has been welded using multipass technique and hybrid process; Nd:YAG -laser + GMAW. Welding has been done using partially grooved V joint geometry and narrow gap with groove angle of 10 degrees. Parameters, for example in filler wire feeding and placement of the wire and the arc are varied. Results of experiments are presented and a phenomenon of the process is discussed.

AB - Hybrid welding, in which laser and some arc welding method work together, has been introduced to be effective joining method. Hot spot, made by laser to the joint, has been reported to stabilize the arc and change the way of material transfer in arc. Hot spot is also guiding the arc towards to it. This phenomenon has been utilized in this study in order to get the process to be happened inside a very narrow groove. In this way, together with multipass technique, the thickness of the parts to be welded can be increased. Welding still happens with quite low total heat input and according to that, method can be used for joining thick sections with very low distortions. Also phenomena of laser keyhole welding still take place, so method is very effective to joining thick sections. In this study thick section austenitic stainless steel has been welded using multipass technique and hybrid process; Nd:YAG -laser + GMAW. Welding has been done using partially grooved V joint geometry and narrow gap with groove angle of 10 degrees. Parameters, for example in filler wire feeding and placement of the wire and the arc are varied. Results of experiments are presented and a phenomenon of the process is discussed.

KW - hybrid welding

KW - narrow gap

KW - Nd:YAG-laser

KW - laser welding

U2 - 10.2351/1.5060047

DO - 10.2351/1.5060047

M3 - Conference article in proceedings

SN - 978-0-912035-75-8

BT - ICALEO 2003: 22nd International Congress on Laser Materials Processing and Laser Microfabrication

PB - Laser Institute of America

T2 - 22nd International Congress on Applications of Lasers and Electro-Optics, ICALEO 2003

Y2 - 13 October 2003 through 16 October 2003

ER -

Narrow gap hybrid welding of thick stainless steel

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Keywords

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